diff --git a/changelog_entry.yaml b/changelog_entry.yaml
index e69de29bb2d..0fdce15941e 100644
--- a/changelog_entry.yaml
+++ b/changelog_entry.yaml
@@ -0,0 +1,4 @@
+- bump: minor
+  changes:
+    added:
+    - South Carolina TANF (Temporary Assistance for Needy Families) program
diff --git a/policyengine_us/parameters/gov/states/sc/tanf/README.md b/policyengine_us/parameters/gov/states/sc/tanf/README.md
new file mode 100644
index 00000000000..eb8aeb3f951
--- /dev/null
+++ b/policyengine_us/parameters/gov/states/sc/tanf/README.md
@@ -0,0 +1 @@
+# Temporary Assistance for Needy Families
diff --git a/policyengine_us/parameters/gov/states/sc/tanf/income/earned/disregard/amount.yaml b/policyengine_us/parameters/gov/states/sc/tanf/income/earned/disregard/amount.yaml
new file mode 100644
index 00000000000..ae71efe23d7
--- /dev/null
+++ b/policyengine_us/parameters/gov/states/sc/tanf/income/earned/disregard/amount.yaml
@@ -0,0 +1,11 @@
+description: South Carolina excludes this amount from earned income after the initial disregard period under the Temporary Assistance for Needy Families program.  
+values:
+  1996-07-01: 100
+
+metadata:
+  unit: currency-USD
+  period: month
+  label: South Carolina TANF earned income disregard amount  
+  reference:
+    - title: SC DSS TANF Policy Manual Section 8.12
+      href: https://dss.sc.gov/media/ojqddxsk/tanf-policy-manual-volume-65.pdf#page=130 
diff --git a/policyengine_us/parameters/gov/states/sc/tanf/income/earned/disregard/percentage/months.yaml b/policyengine_us/parameters/gov/states/sc/tanf/income/earned/disregard/percentage/months.yaml
new file mode 100644
index 00000000000..d80916562a5
--- /dev/null
+++ b/policyengine_us/parameters/gov/states/sc/tanf/income/earned/disregard/percentage/months.yaml
@@ -0,0 +1,11 @@
+description: South Carolina applies the earned income percentage disregard for this number of months under the Temporary Assistance for Needy Families program. 
+values:
+  1996-07-01: 4
+
+metadata:
+  unit: month
+  period: month
+  label: South Carolina TANF earned income percentage disregard applicable months
+  reference:
+    - title: SC DSS TANF Policy Manual Section 8.12
+      href: https://dss.sc.gov/media/ojqddxsk/tanf-policy-manual-volume-65.pdf#page=130 
diff --git a/policyengine_us/parameters/gov/states/sc/tanf/income/earned/disregard/percentage/rate.yaml b/policyengine_us/parameters/gov/states/sc/tanf/income/earned/disregard/percentage/rate.yaml
new file mode 100644
index 00000000000..97cf9e46956
--- /dev/null
+++ b/policyengine_us/parameters/gov/states/sc/tanf/income/earned/disregard/percentage/rate.yaml
@@ -0,0 +1,11 @@
+description: South Carolina excludes this share of earnings from countable income under the Temporary Assistance for Needy Families program. 
+values:
+  1996-07-01: 0.5
+
+metadata:
+  unit: /1
+  period: month
+  label: South Carolina TANF earned income disregard percentage
+  reference:
+    - title: SC DSS TANF Policy Manual Section 8.12
+      href: https://dss.sc.gov/media/ojqddxsk/tanf-policy-manual-volume-65.pdf#page=130 
diff --git a/policyengine_us/parameters/gov/states/sc/tanf/income/earned/earned.yaml b/policyengine_us/parameters/gov/states/sc/tanf/income/earned/earned.yaml
new file mode 100644
index 00000000000..a4b18e1b009
--- /dev/null
+++ b/policyengine_us/parameters/gov/states/sc/tanf/income/earned/earned.yaml
@@ -0,0 +1,12 @@
+description: South Carolina counts these income sources as earned income under the Temporary Assistance for Needy Families program.
+values:
+  1996-07-01:
+    - employment_income_before_lsr
+    - self_employment_income_before_lsr
+metadata:
+  unit: list
+  period: month 
+  label: South Carolina TANF earned income 
+  reference:
+    - title: SC DSS TANF Policy Manual Section 7.1
+      href: https://dss.sc.gov/media/ojqddxsk/tanf-policy-manual-volume-65.pdf#page=101
diff --git a/policyengine_us/parameters/gov/states/sc/tanf/income/gross_income_limit.yaml b/policyengine_us/parameters/gov/states/sc/tanf/income/gross_income_limit.yaml
new file mode 100644
index 00000000000..7ffed0cd6ba
--- /dev/null
+++ b/policyengine_us/parameters/gov/states/sc/tanf/income/gross_income_limit.yaml
@@ -0,0 +1,11 @@
+description: South Carolina limits gross income to this multiple of the need standard under the Temporary Assistance for Needy Families program.  
+values:
+  1996-07-01: 1.85
+
+metadata:
+  unit: /1
+  period: month
+  label: South Carolina TANF gross income limit
+  reference:
+    - title: SC DSS TANF Policy Manual Section 8.15
+      href: https://dss.sc.gov/media/ojqddxsk/tanf-policy-manual-volume-65.pdf#page=132
diff --git a/policyengine_us/parameters/gov/states/sc/tanf/income/need_standard/rate.yaml b/policyengine_us/parameters/gov/states/sc/tanf/income/need_standard/rate.yaml
new file mode 100644
index 00000000000..94e28622b5b
--- /dev/null
+++ b/policyengine_us/parameters/gov/states/sc/tanf/income/need_standard/rate.yaml
@@ -0,0 +1,13 @@
+description: South Carolina sets this share of the federal poverty guidelines as the need standard under the Temporary Assistance for Needy Families program.  
+values:
+  1996-07-01: 0.5
+
+metadata:
+  unit: /1
+  period: month
+  label: South Carolina TANF need standard
+  reference:
+    - title: S.C. Code Regs. § 114-1140(A)(2)
+      href: https://www.law.cornell.edu/regulations/south-carolina/R-114-1140
+    - title: The South Carolina Department of Social Services TANF Policy Manual
+      href: https://dss.sc.gov/media/ojqddxsk/tanf-policy-manual-volume-65.pdf#page=131
diff --git a/policyengine_us/parameters/gov/states/sc/tanf/income/unearned.yaml b/policyengine_us/parameters/gov/states/sc/tanf/income/unearned.yaml
new file mode 100644
index 00000000000..04d46ca9f07
--- /dev/null
+++ b/policyengine_us/parameters/gov/states/sc/tanf/income/unearned.yaml
@@ -0,0 +1,28 @@
+description: South Carolina counts these income sources as unearned income under the Temporary Assistance for Needy Families program.
+values:
+  1996-07-01:
+    - partnership_s_corp_income
+    - farm_income
+    - farm_rent_income
+    - capital_gains
+    - taxable_interest_income
+    - rental_income
+    # Royalties included in rental income
+    - dividend_income
+    - taxable_pension_income 
+    # Pension income includes annuities and endowment contracts
+    - debt_relief
+    # Decedent income
+    # Estate interest income
+    - taxable_unemployment_compensation
+    - taxable_social_security
+    - illicit_income
+    - taxable_retirement_distributions
+    - miscellaneous_income
+metadata:
+  unit: list
+  period: month 
+  label: South Carolina TANF unearned income 
+  reference:
+    - title: SC DSS TANF Policy Manual Section 7.1
+      href: https://dss.sc.gov/media/ojqddxsk/tanf-policy-manual-volume-65.pdf#page=101
diff --git a/policyengine_us/parameters/gov/states/sc/tanf/payment/rate.yaml b/policyengine_us/parameters/gov/states/sc/tanf/payment/rate.yaml
new file mode 100644
index 00000000000..e6228dad713
--- /dev/null
+++ b/policyengine_us/parameters/gov/states/sc/tanf/payment/rate.yaml
@@ -0,0 +1,14 @@
+description: South Carolina uses this rate to calculate benefits under the Temporary Assistance for Needy Families program.  
+values:
+  2016-10-01: 0.3372
+  2024-10-01: 0.4046
+
+metadata:
+  unit: /1
+  period: month
+  label: South Carolina TANF payment rate
+  reference:
+    - title: S.C. Code Regs. § 114-1140(A)(3)
+      href: https://www.law.cornell.edu/regulations/south-carolina/R-114-1140
+    - title: The South Carolina Department of Social Services TANF Policy Manual
+      href: https://dss.sc.gov/media/ojqddxsk/tanf-policy-manual-volume-65.pdf#page=131
diff --git a/policyengine_us/parameters/gov/states/sc/tanf/resources/limit.yaml b/policyengine_us/parameters/gov/states/sc/tanf/resources/limit.yaml
new file mode 100644
index 00000000000..d14e13b9766
--- /dev/null
+++ b/policyengine_us/parameters/gov/states/sc/tanf/resources/limit.yaml
@@ -0,0 +1,13 @@
+description: South Carolina limits resources to this amount under the Temporary Assistance for Needy Families program.
+values:
+  1996-07-01: 2_500
+
+metadata:
+  unit: currency-USD
+  period: month
+  label: South Carolina TANF household resource limit
+  reference:
+    - title: S.C. Code Regs. § 114-1140(C)
+      href: https://www.law.cornell.edu/regulations/south-carolina/R-114-1140
+    - title: The South Carolina Department of Social Services TANF Policy Manual
+      href: https://dss.sc.gov/media/ojqddxsk/tanf-policy-manual-volume-65.pdf#page=90
diff --git a/policyengine_us/tests/policy/baseline/gov/states/sc/tanf/integration.yaml b/policyengine_us/tests/policy/baseline/gov/states/sc/tanf/integration.yaml
new file mode 100644
index 00000000000..c31683622b7
--- /dev/null
+++ b/policyengine_us/tests/policy/baseline/gov/states/sc/tanf/integration.yaml
@@ -0,0 +1,224 @@
+- name: Case 1, single parent of 2 children with no income.
+  absolute_error_margin: 0.1
+  period: 2025-01
+  input:
+    people:
+      person1:
+        age: 40
+        employment_income_before_lsr: 0
+      person2:
+        age: 10
+        is_child_dependent: true
+      person3:
+        age: 8
+        is_child_dependent: true
+    spm_units:
+      spm_unit:
+        members: [person1, person2, person3]
+        spm_unit_assets: 1_000
+    households:
+      household:
+        members: [person1, person2, person3]
+        state_code: SC
+  output:
+    sc_tanf: 435.28
+    # tanf_fpg for size 3 (2025-01, uses 2024-10 FPG) = 2151.67/month
+    # need_standard = 2151.67 * 0.5 = 1075.83
+    # benefit = 1075.83 * 0.4046 = 435.49
+
+- name: Case 2, single parent with earned income.
+  absolute_error_margin: 0.1
+  period: 2025-01
+  input:
+    people:
+      person1:
+        age: 40
+        employment_income_before_lsr: 6_000
+      person2:
+        age: 10
+        is_child_dependent: true
+      person3:
+        age: 8
+        is_child_dependent: true
+    spm_units:
+      spm_unit:
+        members: [person1, person2, person3]
+        spm_unit_assets: 1_000
+    households:
+      household:
+        members: [person1, person2, person3]
+        state_code: SC
+  output:
+    sc_tanf: 334.13
+    # monthly earned = 6,000/12 = 500
+    # January (month 1) uses 50% disregard
+    # countable_earned = 500 * 0.5 = 250
+    # countable_income = 250
+    # need_standard = 1075.83
+    # excess = 1075.83 - 250 = 825.83
+    # benefit = 825.83 * 0.4046 = 334.13
+
+- name: Case 3, income above gross limit.
+  period: 2025-01
+  input:
+    people:
+      person1:
+        age: 40
+        employment_income_before_lsr: 24_000
+      person2:
+        age: 10
+        is_child_dependent: true
+    spm_units:
+      spm_unit:
+        members: [person1, person2]
+        spm_unit_assets: 1_000
+    households:
+      household:
+        members: [person1, person2]
+        state_code: SC
+  output:
+    sc_tanf: 0
+    # monthly earned = 24,000/12 = 2,000
+    # tanf_fpg for size 2 = 1703.33
+    # need_standard = 851.67
+    # gross_income_limit = 851.67 * 1.85 = 1575.58
+    # 2,000 > 1,575.58 -> not eligible
+
+- name: Case 4, single pregnant person with no income.
+  period: 2025-01
+  absolute_error_margin: 0.1
+  input:
+    people:
+      person1:
+        age: 25
+        is_pregnant: true
+        employment_income_before_lsr: 0
+    spm_units:
+      spm_unit:
+        members: [person1]
+        spm_unit_assets: 500
+    households:
+      household:
+        members: [person1]
+        state_code: SC
+  output:
+    sc_tanf: 253.89
+    # tanf_fpg for size 1 (2025-01) = 1255/month
+    # need_standard = 1255 * 0.5 = 627.50
+    # benefit = 627.50 * 0.4046 = 253.89
+
+- name: Case 5, unearned income only.
+  period: 2025-01
+  absolute_error_margin: 0.1
+  input:
+    people:
+      person1:
+        age: 35
+        employment_income_before_lsr: 0
+        taxable_social_security: 3_600
+      person2:
+        age: 8
+        is_child_dependent: true
+    spm_units:
+      spm_unit:
+        members: [person1, person2]
+        spm_unit_assets: 500
+    households:
+      household:
+        members: [person1, person2]
+        state_code: SC
+  output:
+    sc_tanf: 223.20
+    # monthly unearned = 3,600/12 = 300
+    # tanf_fpg for size 2 = 1703.33
+    # need_standard = 1703.33 * 0.5 = 851.67
+    # countable_income = 0 (earned) + 300 (unearned) = 300
+    # excess = 851.67 - 300 = 551.67
+    # benefit = 551.67 * 0.4046 = 223.20
+
+- name: Case 6, historical payment rate (pre-Oct 2024).
+  period: 2024-01
+  absolute_error_margin: 0.1
+  input:
+    people:
+      person1:
+        age: 35
+        employment_income_before_lsr: 0
+      person2:
+        age: 8
+        is_child_dependent: true
+    spm_units:
+      spm_unit:
+        members: [person1, person2]
+        spm_unit_assets: 500
+    households:
+      household:
+        members: [person1, person2]
+        state_code: SC
+  output:
+    sc_tanf: 277.07
+    # tanf_fpg for size 2 (2024-01, uses 2023-10 FPG) = 1643.33/month
+    # need_standard = 1643.33 * 0.5 = 821.67
+    # benefit = 821.67 * 0.3372 = 277.07 (old rate)
+
+- name: Case 7, two-parent household with 4 children (family of 6).
+  period: 2025-01
+  absolute_error_margin: 1
+  input:
+    people:
+      parent1:
+        age: 35
+        employment_income_before_lsr: 0
+      parent2:
+        age: 33
+        employment_income_before_lsr: 0
+      child1:
+        age: 14
+        is_child_dependent: true
+      child2:
+        age: 12
+        is_child_dependent: true
+      child3:
+        age: 8
+        is_child_dependent: true
+      child4:
+        age: 5
+        is_child_dependent: true
+    spm_units:
+      spm_unit:
+        members: [parent1, parent2, child1, child2, child3, child4]
+        spm_unit_assets: 1_000
+    households:
+      household:
+        members: [parent1, parent2, child1, child2, child3, child4]
+        state_code: SC
+  output:
+    sc_tanf: 707
+    # tanf_fpg for size 6 (2025-01) = 3496/month (from Section 8.15 table)
+    # need_standard = 3496 * 0.5 = 1748
+    # benefit = 1748 * 0.4046 = 707.24
+
+- name: Case 8, ineligible due to immigration status.
+  period: 2025-01
+  input:
+    people:
+      person1:
+        age: 35
+        employment_income_before_lsr: 0
+        immigration_status: UNDOCUMENTED
+      person2:
+        age: 8
+        is_child_dependent: true
+        immigration_status: UNDOCUMENTED
+    spm_units:
+      spm_unit:
+        members: [person1, person2]
+        spm_unit_assets: 500
+    households:
+      household:
+        members: [person1, person2]
+        state_code: SC
+  output:
+    sc_tanf: 0
+    # Both members are undocumented, so no one qualifies as
+    # citizen or legal immigrant -> ineligible
diff --git a/policyengine_us/tests/policy/baseline/gov/states/sc/tanf/sc_tanf.yaml b/policyengine_us/tests/policy/baseline/gov/states/sc/tanf/sc_tanf.yaml
new file mode 100644
index 00000000000..01f7c7cfc9a
--- /dev/null
+++ b/policyengine_us/tests/policy/baseline/gov/states/sc/tanf/sc_tanf.yaml
@@ -0,0 +1,38 @@
+- name: Case 1, no earned income is eligible for standard amount.
+  absolute_error_margin: 0.1
+  period: 2025-01
+  input:
+    state_code: SC
+    sc_tanf_countable_income: 0
+    sc_tanf_eligible: true
+    spm_unit_size: 2
+  output:
+    sc_tanf: 344.58
+    # tanf_fpg for size 2 (2025-01, uses 2024-10 FPG) = 1703.33/month
+    # need_standard = 1703.33 * 0.5 = 851.67
+    # benefit = 851.67 * 0.4046 = 344.59
+
+- name: Case 2, not eligible.
+  period: 2025-01
+  input:
+    state_code: SC
+    sc_tanf_countable_income: 1_000
+    sc_tanf_eligible: false
+    spm_unit_size: 2
+  output:
+    sc_tanf: 0
+
+- name: Case 3, some countable income.
+  absolute_error_margin: 0.1
+  period: 2025-01
+  input:
+    state_code: SC
+    sc_tanf_countable_income: 500
+    sc_tanf_eligible: true
+    spm_unit_size: 2
+  output:
+    sc_tanf: 142.28
+    # tanf_fpg for size 2 (2025-01) = 1703.33/month
+    # need_standard = 1703.33 * 0.5 = 851.67
+    # excess = 851.67 - 500 = 351.67
+    # benefit = 351.67 * 0.4046 = 142.31
diff --git a/policyengine_us/tests/policy/baseline/gov/states/sc/tanf/sc_tanf_countable_earned_income_person.yaml b/policyengine_us/tests/policy/baseline/gov/states/sc/tanf/sc_tanf_countable_earned_income_person.yaml
new file mode 100644
index 00000000000..4157a4b30f2
--- /dev/null
+++ b/policyengine_us/tests/policy/baseline/gov/states/sc/tanf/sc_tanf_countable_earned_income_person.yaml
@@ -0,0 +1,41 @@
+- name: Case 1, no earned income.
+  period: 2025-01
+  input:
+    state_code: SC
+    employment_income_before_lsr: 0
+  output:
+    sc_tanf_countable_earned_income_person: 0
+
+- name: Case 2, January uses 50% disregard.
+  period: 2025-01
+  input:
+    state_code: SC
+    employment_income_before_lsr: 12_000
+  output:
+    sc_tanf_countable_earned_income_person: 500
+    # monthly_income = 12,000 / 12 = 1,000
+    # January (month 1) <= 4: uses 50% disregard
+    # countable = 1,000 * 0.5 = 500
+
+- name: Case 3, full year verification of two-phase disregard.
+  period: 2025
+  input:
+    state_code: SC
+    employment_income_before_lsr: 12_000
+  output:
+    sc_tanf_countable_earned_income_person: 9_200
+    # Jan-Apr (4 months): 1,000 * 0.5 = 500/month → 2,000
+    # May-Dec (8 months): max(1,000 - 100, 0) = 900/month → 7,200
+    # Annual total: 2,000 + 7,200 = 9,200
+
+- name: Case 4, low income where $100 disregard zeroes out income.
+  period: 2025
+  input:
+    state_code: SC
+    employment_income_before_lsr: 600
+  output:
+    sc_tanf_countable_earned_income_person: 100
+    # monthly_income = 600 / 12 = 50
+    # Jan-Apr (4 months): 50 * 0.5 = 25/month → 100
+    # May-Dec (8 months): max(50 - 100, 0) = 0/month → 0
+    # Annual total: 100 + 0 = 100
diff --git a/policyengine_us/tests/policy/baseline/gov/states/sc/tanf/sc_tanf_countable_income_eligible.yaml b/policyengine_us/tests/policy/baseline/gov/states/sc/tanf/sc_tanf_countable_income_eligible.yaml
new file mode 100644
index 00000000000..ed35d4779a1
--- /dev/null
+++ b/policyengine_us/tests/policy/baseline/gov/states/sc/tanf/sc_tanf_countable_income_eligible.yaml
@@ -0,0 +1,44 @@
+- name: Case 1, no income is eligible.
+  period: 2025-01
+  input:
+    state_code: SC
+    spm_unit_size: 2
+  output:
+    sc_tanf_countable_income_eligible: true
+
+- name: Case 2, countable income below need standard.
+  period: 2025-01
+  input:
+    state_code: SC
+    spm_unit_size: 2
+    sc_tanf_countable_income: 800
+  output:
+    sc_tanf_countable_income_eligible: true
+    # tanf_fpg for size 2 (2025-01) = 1703.33/month
+    # need_standard = 1703.33 * 0.5 = 851.67
+    # 800 < 851.67 -> eligible
+
+- name: Case 3, countable income above need standard.
+  period: 2025-01
+  input:
+    state_code: SC
+    spm_unit_size: 2
+    sc_tanf_countable_income: 900
+  output:
+    sc_tanf_countable_income_eligible: false
+    # need_standard = 851.67
+    # 900 >= 851.67 -> not eligible
+
+- name: Case 4, countable income exactly at need standard.
+  period: 2025-01
+  absolute_error_margin: 0.1
+  input:
+    state_code: SC
+    spm_unit_size: 2
+    sc_tanf_countable_income: 851.67
+  output:
+    sc_tanf_countable_income_eligible: false
+    # tanf_fpg for size 2 = 1703.33
+    # need_standard = 1703.33 * 0.5 = 851.67
+    # 851.67 < 851.67 is FALSE (strict less than)
+    # -> not eligible
diff --git a/policyengine_us/tests/policy/baseline/gov/states/sc/tanf/sc_tanf_eligible.yaml b/policyengine_us/tests/policy/baseline/gov/states/sc/tanf/sc_tanf_eligible.yaml
new file mode 100644
index 00000000000..eae5b4ea2e1
--- /dev/null
+++ b/policyengine_us/tests/policy/baseline/gov/states/sc/tanf/sc_tanf_eligible.yaml
@@ -0,0 +1,39 @@
+- name: Case 1, eligible for all.
+  period: 2025-01
+  input:
+    state_code: SC
+    is_demographic_tanf_eligible: true
+    sc_tanf_income_eligible: true
+    sc_tanf_resources_eligible: true
+  output:
+    sc_tanf_eligible: true
+
+- name: Case 2, not demographic eligible.
+  period: 2025-01
+  input:
+    state_code: SC
+    is_demographic_tanf_eligible: false
+    sc_tanf_income_eligible: true
+    sc_tanf_resources_eligible: true
+  output:
+    sc_tanf_eligible: false
+
+- name: Case 3, not income eligible.
+  period: 2025-01
+  input:
+    state_code: SC
+    is_demographic_tanf_eligible: true
+    sc_tanf_income_eligible: false
+    sc_tanf_resources_eligible: true
+  output:
+    sc_tanf_eligible: false
+
+- name: Case 4, not resources eligible.
+  period: 2025-01
+  input:
+    state_code: SC
+    is_demographic_tanf_eligible: true
+    sc_tanf_income_eligible: true
+    sc_tanf_resources_eligible: false
+  output:
+    sc_tanf_eligible: false
diff --git a/policyengine_us/tests/policy/baseline/gov/states/sc/tanf/sc_tanf_gross_income_eligible.yaml b/policyengine_us/tests/policy/baseline/gov/states/sc/tanf/sc_tanf_gross_income_eligible.yaml
new file mode 100644
index 00000000000..dd0656ebf42
--- /dev/null
+++ b/policyengine_us/tests/policy/baseline/gov/states/sc/tanf/sc_tanf_gross_income_eligible.yaml
@@ -0,0 +1,47 @@
+- name: Case 1, no income is eligible.
+  period: 2025-01
+  input:
+    state_code: SC
+    spm_unit_size: 2
+  output:
+    sc_tanf_gross_income_eligible: true
+
+- name: Case 2, income below gross income limit.
+  period: 2025-01
+  input:
+    state_code: SC
+    spm_unit_size: 2
+    employment_income_before_lsr: 18_000
+  output:
+    sc_tanf_gross_income_eligible: true
+    # monthly earned = 18,000 / 12 = 1,500
+    # tanf_fpg for size 2 (2025-01) = 1703.33/month
+    # need_standard = 1703.33 * 0.5 = 851.67
+    # gross_income_limit = 851.67 * 1.85 = 1575.58
+    # 1,500 <= 1,575.58 -> eligible
+
+- name: Case 3, income above gross income limit.
+  period: 2025-01
+  input:
+    state_code: SC
+    spm_unit_size: 2
+    employment_income_before_lsr: 24_000
+  output:
+    sc_tanf_gross_income_eligible: false
+    # monthly earned = 24,000 / 12 = 2,000
+    # gross_income_limit = 1,575.58
+    # 2,000 > 1,575.58 -> not eligible
+
+- name: Case 4, gross income exactly at limit.
+  period: 2025-01
+  absolute_error_margin: 0.1
+  input:
+    state_code: SC
+    spm_unit_size: 2
+    sc_tanf_gross_income: 1_575.58
+  output:
+    sc_tanf_gross_income_eligible: true
+    # tanf_fpg for size 2 = 1703.33
+    # need_standard = 1703.33 * 0.5 = 851.665
+    # gross_income_limit = 851.665 * 1.85 = 1575.58
+    # 1575.58 <= 1575.58 -> eligible (uses <=)
diff --git a/policyengine_us/tests/policy/baseline/gov/states/sc/tanf/sc_tanf_income_eligible.yaml b/policyengine_us/tests/policy/baseline/gov/states/sc/tanf/sc_tanf_income_eligible.yaml
new file mode 100644
index 00000000000..da84d0c22da
--- /dev/null
+++ b/policyengine_us/tests/policy/baseline/gov/states/sc/tanf/sc_tanf_income_eligible.yaml
@@ -0,0 +1,49 @@
+- name: Case 1, no income is eligible.
+  period: 2025-01
+  input:
+    state_code: SC
+    sc_tanf_countable_income: 0
+    sc_tanf_gross_income: 0
+    spm_unit_size: 2
+  output:
+    sc_tanf_income_eligible: true
+
+- name: Case 2, did not pass the gross income test.
+  period: 2025-01
+  input:
+    state_code: SC
+    sc_tanf_countable_income: 500
+    sc_tanf_gross_income: 2_000
+    spm_unit_size: 2
+  output:
+    sc_tanf_income_eligible: false
+    # tanf_fpg for size 2 (2025-01) = 1703.33/month
+    # need_standard = 1703.33 * 0.5 = 851.67
+    # gross_income_limit = 851.67 * 1.85 = 1575.58
+    # gross_income 2,000 > 1,575.58 -> not eligible
+
+- name: Case 3, pass gross income test but higher than need standard.
+  period: 2025-01
+  input:
+    state_code: SC
+    sc_tanf_countable_income: 900
+    sc_tanf_gross_income: 1_200
+    spm_unit_size: 2
+  output:
+    sc_tanf_income_eligible: false
+    # need_standard = 851.67
+    # gross_income_limit = 1,575.58
+    # gross 1,200 < 1,575.58 -> passes gross test
+    # countable 900 >= 851.67 -> fails countable test
+
+- name: Case 4, pass both income tests.
+  period: 2025-01
+  input:
+    state_code: SC
+    sc_tanf_countable_income: 800
+    sc_tanf_gross_income: 1_000
+    spm_unit_size: 2
+  output:
+    sc_tanf_income_eligible: true
+    # gross 1,000 < 1,575.58 -> passes gross test
+    # countable 800 < 851.67 -> passes countable test
diff --git a/policyengine_us/tests/policy/baseline/gov/states/sc/tanf/sc_tanf_resources_eligible.yaml b/policyengine_us/tests/policy/baseline/gov/states/sc/tanf/sc_tanf_resources_eligible.yaml
new file mode 100644
index 00000000000..c25f3d2b122
--- /dev/null
+++ b/policyengine_us/tests/policy/baseline/gov/states/sc/tanf/sc_tanf_resources_eligible.yaml
@@ -0,0 +1,36 @@
+- name: Case 1, assets below the limit.
+  period: 2025-01
+  input:
+    state_code: SC
+    spm_unit_assets: 2_000
+  output:
+    sc_tanf_resources_eligible: true
+    # 2,000 <= 2,500 -> eligible
+
+- name: Case 2, assets above the limit.
+  period: 2025-01
+  input:
+    state_code: SC
+    spm_unit_assets: 3_000
+  output:
+    sc_tanf_resources_eligible: false
+    # 3,000 > 2,500 -> not eligible
+
+- name: Case 3, assets exactly at the limit.
+  period: 2025-01
+  absolute_error_margin: 0.1
+  input:
+    state_code: SC
+    spm_unit_assets: 2_500
+  output:
+    sc_tanf_resources_eligible: true
+    # 2,500 <= 2,500 -> eligible (uses <=)
+
+- name: Case 4, no assets.
+  period: 2025-01
+  input:
+    state_code: SC
+    spm_unit_assets: 0
+  output:
+    sc_tanf_resources_eligible: true
+    # 0 <= 2,500 -> eligible
diff --git a/policyengine_us/variables/gov/states/sc/tanf/eligibility/sc_tanf_countable_income_eligible.py b/policyengine_us/variables/gov/states/sc/tanf/eligibility/sc_tanf_countable_income_eligible.py
new file mode 100644
index 00000000000..41c1eaed560
--- /dev/null
+++ b/policyengine_us/variables/gov/states/sc/tanf/eligibility/sc_tanf_countable_income_eligible.py
@@ -0,0 +1,17 @@
+from policyengine_us.model_api import *
+
+
+class sc_tanf_countable_income_eligible(Variable):
+    value_type = bool
+    entity = SPMUnit
+    label = "South Carolina TANF countable income eligible"
+    definition_period = MONTH
+    defined_for = StateCode.SC
+    reference = "https://dss.sc.gov/media/ojqddxsk/tanf-policy-manual-volume-65.pdf#page=131"
+
+    def formula(spm_unit, period, parameters):
+        p = parameters(period).gov.states.sc.tanf.income
+        fpg = spm_unit("tanf_fpg", period)
+        need_standard = fpg * p.need_standard.rate
+        countable_income = spm_unit("sc_tanf_countable_income", period)
+        return countable_income < need_standard
diff --git a/policyengine_us/variables/gov/states/sc/tanf/eligibility/sc_tanf_eligible.py b/policyengine_us/variables/gov/states/sc/tanf/eligibility/sc_tanf_eligible.py
new file mode 100644
index 00000000000..55bbfbc7d8d
--- /dev/null
+++ b/policyengine_us/variables/gov/states/sc/tanf/eligibility/sc_tanf_eligible.py
@@ -0,0 +1,24 @@
+from policyengine_us.model_api import *
+
+
+class sc_tanf_eligible(Variable):
+    value_type = bool
+    entity = SPMUnit
+    label = "Eligible for the South Carolina TANF program"
+    definition_period = MONTH
+    defined_for = StateCode.SC
+    reference = "https://www.law.cornell.edu/regulations/south-carolina/S.C.-Code-Regs.-114-1140"
+
+    def formula(spm_unit, period, parameters):
+        demographic_eligible = spm_unit("is_demographic_tanf_eligible", period)
+        immigration_eligible = (
+            add(spm_unit, period, ["is_citizen_or_legal_immigrant"]) > 0
+        )
+        income_eligible = spm_unit("sc_tanf_income_eligible", period)
+        resource_eligible = spm_unit("sc_tanf_resources_eligible", period)
+        return (
+            demographic_eligible
+            & immigration_eligible
+            & income_eligible
+            & resource_eligible
+        )
diff --git a/policyengine_us/variables/gov/states/sc/tanf/eligibility/sc_tanf_gross_income_eligible.py b/policyengine_us/variables/gov/states/sc/tanf/eligibility/sc_tanf_gross_income_eligible.py
new file mode 100644
index 00000000000..4b5b3fbbf12
--- /dev/null
+++ b/policyengine_us/variables/gov/states/sc/tanf/eligibility/sc_tanf_gross_income_eligible.py
@@ -0,0 +1,18 @@
+from policyengine_us.model_api import *
+
+
+class sc_tanf_gross_income_eligible(Variable):
+    value_type = bool
+    entity = SPMUnit
+    label = "South Carolina TANF gross income eligible"
+    definition_period = MONTH
+    defined_for = StateCode.SC
+    reference = "https://dss.sc.gov/media/ojqddxsk/tanf-policy-manual-volume-65.pdf#page=131"
+
+    def formula(spm_unit, period, parameters):
+        p = parameters(period).gov.states.sc.tanf.income
+        fpg = spm_unit("tanf_fpg", period)
+        need_standard = fpg * p.need_standard.rate
+        gross_income_limit = need_standard * p.gross_income_limit
+        gross_income = spm_unit("sc_tanf_gross_income", period)
+        return gross_income <= gross_income_limit
diff --git a/policyengine_us/variables/gov/states/sc/tanf/eligibility/sc_tanf_income_eligible.py b/policyengine_us/variables/gov/states/sc/tanf/eligibility/sc_tanf_income_eligible.py
new file mode 100644
index 00000000000..5d876ad5601
--- /dev/null
+++ b/policyengine_us/variables/gov/states/sc/tanf/eligibility/sc_tanf_income_eligible.py
@@ -0,0 +1,19 @@
+from policyengine_us.model_api import *
+
+
+class sc_tanf_income_eligible(Variable):
+    value_type = bool
+    entity = SPMUnit
+    label = "South Carolina TANF income eligible"
+    definition_period = MONTH
+    defined_for = StateCode.SC
+    reference = "https://dss.sc.gov/media/ojqddxsk/tanf-policy-manual-volume-65.pdf#page=131"
+
+    def formula(spm_unit, period, parameters):
+        gross_income_eligible = spm_unit(
+            "sc_tanf_gross_income_eligible", period
+        )
+        countable_income_eligible = spm_unit(
+            "sc_tanf_countable_income_eligible", period
+        )
+        return gross_income_eligible & countable_income_eligible
diff --git a/policyengine_us/variables/gov/states/sc/tanf/eligibility/sc_tanf_resources_eligible.py b/policyengine_us/variables/gov/states/sc/tanf/eligibility/sc_tanf_resources_eligible.py
new file mode 100644
index 00000000000..218468a0447
--- /dev/null
+++ b/policyengine_us/variables/gov/states/sc/tanf/eligibility/sc_tanf_resources_eligible.py
@@ -0,0 +1,15 @@
+from policyengine_us.model_api import *
+
+
+class sc_tanf_resources_eligible(Variable):
+    value_type = bool
+    entity = SPMUnit
+    label = "South Carolina TANF resources eligible"
+    definition_period = MONTH
+    defined_for = StateCode.SC
+    reference = "https://www.law.cornell.edu/regulations/south-carolina/S.C.-Code-Regs.-114-1140"  # Section (C)
+
+    def formula(spm_unit, period, parameters):
+        p = parameters(period).gov.states.sc.tanf.resources
+        assets = spm_unit("spm_unit_assets", period.this_year)
+        return assets <= p.limit
diff --git a/policyengine_us/variables/gov/states/sc/tanf/income/sc_tanf_countable_earned_income_person.py b/policyengine_us/variables/gov/states/sc/tanf/income/sc_tanf_countable_earned_income_person.py
new file mode 100644
index 00000000000..4ac9a3f8583
--- /dev/null
+++ b/policyengine_us/variables/gov/states/sc/tanf/income/sc_tanf_countable_earned_income_person.py
@@ -0,0 +1,26 @@
+from policyengine_us.model_api import *
+
+
+class sc_tanf_countable_earned_income_person(Variable):
+    value_type = float
+    entity = Person
+    label = "South Carolina TANF countable earned income"
+    unit = USD
+    definition_period = MONTH
+    defined_for = StateCode.SC
+    reference = "https://dss.sc.gov/media/ojqddxsk/tanf-policy-manual-volume-65.pdf#page=130"  # Section 8.12
+
+    def formula(person, period, parameters):
+        p = parameters(period).gov.states.sc.tanf.income.earned.disregard
+        gross_earned_income = person("sc_tanf_gross_earned_income", period)
+        month = period.start.month
+
+        # First 4 months (Jan-Apr): 50% disregard
+        # Remaining 8 months (May-Dec): $100 flat disregard
+        # Use calendar months as a proxy. The actual policy refers to
+        # "first 4 months of employment" which cannot be tracked.
+        initial_period = month <= p.percentage.months
+        initial_countable = gross_earned_income * (1 - p.percentage.rate)
+        ongoing_countable = max_(gross_earned_income - p.amount, 0)
+
+        return where(initial_period, initial_countable, ongoing_countable)
diff --git a/policyengine_us/variables/gov/states/sc/tanf/income/sc_tanf_countable_income.py b/policyengine_us/variables/gov/states/sc/tanf/income/sc_tanf_countable_income.py
new file mode 100644
index 00000000000..a949b41ed3f
--- /dev/null
+++ b/policyengine_us/variables/gov/states/sc/tanf/income/sc_tanf_countable_income.py
@@ -0,0 +1,16 @@
+from policyengine_us.model_api import *
+
+
+class sc_tanf_countable_income(Variable):
+    value_type = float
+    entity = SPMUnit
+    label = "South Carolina TANF countable income"
+    unit = USD
+    definition_period = MONTH
+    defined_for = StateCode.SC
+    reference = "https://dss.sc.gov/media/ojqddxsk/tanf-policy-manual-volume-65.pdf#page=131"
+
+    adds = [
+        "sc_tanf_countable_earned_income_person",
+        "sc_tanf_gross_unearned_income",
+    ]
diff --git a/policyengine_us/variables/gov/states/sc/tanf/income/sc_tanf_gross_earned_income.py b/policyengine_us/variables/gov/states/sc/tanf/income/sc_tanf_gross_earned_income.py
new file mode 100644
index 00000000000..7c599d576d3
--- /dev/null
+++ b/policyengine_us/variables/gov/states/sc/tanf/income/sc_tanf_gross_earned_income.py
@@ -0,0 +1,12 @@
+from policyengine_us.model_api import *
+
+
+class sc_tanf_gross_earned_income(Variable):
+    value_type = float
+    entity = Person
+    label = "South Carolina TANF gross earned income"
+    unit = USD
+    definition_period = MONTH
+    defined_for = StateCode.SC
+    reference = "https://dss.sc.gov/media/ojqddxsk/tanf-policy-manual-volume-65.pdf#page=100"  # Section 7.1
+    adds = "gov.states.sc.tanf.income.earned.earned"
diff --git a/policyengine_us/variables/gov/states/sc/tanf/income/sc_tanf_gross_income.py b/policyengine_us/variables/gov/states/sc/tanf/income/sc_tanf_gross_income.py
new file mode 100644
index 00000000000..7f22abc303f
--- /dev/null
+++ b/policyengine_us/variables/gov/states/sc/tanf/income/sc_tanf_gross_income.py
@@ -0,0 +1,16 @@
+from policyengine_us.model_api import *
+
+
+class sc_tanf_gross_income(Variable):
+    value_type = float
+    entity = SPMUnit
+    label = "South Carolina TANF gross income"
+    unit = USD
+    definition_period = MONTH
+    defined_for = StateCode.SC
+    reference = "https://dss.sc.gov/media/ojqddxsk/tanf-policy-manual-volume-65.pdf#page=131"
+
+    adds = [
+        "sc_tanf_gross_earned_income",
+        "sc_tanf_gross_unearned_income",
+    ]
diff --git a/policyengine_us/variables/gov/states/sc/tanf/income/sc_tanf_gross_unearned_income.py b/policyengine_us/variables/gov/states/sc/tanf/income/sc_tanf_gross_unearned_income.py
new file mode 100644
index 00000000000..36273d0a264
--- /dev/null
+++ b/policyengine_us/variables/gov/states/sc/tanf/income/sc_tanf_gross_unearned_income.py
@@ -0,0 +1,12 @@
+from policyengine_us.model_api import *
+
+
+class sc_tanf_gross_unearned_income(Variable):
+    value_type = float
+    entity = Person
+    label = "South Carolina TANF gross unearned income"
+    unit = USD
+    definition_period = MONTH
+    defined_for = StateCode.SC
+    reference = "https://dss.sc.gov/media/ojqddxsk/tanf-policy-manual-volume-65.pdf#page=100"  # Section 7.1
+    adds = "gov.states.sc.tanf.income.unearned"
diff --git a/policyengine_us/variables/gov/states/sc/tanf/sc_tanf.py b/policyengine_us/variables/gov/states/sc/tanf/sc_tanf.py
new file mode 100644
index 00000000000..8e7afa77df6
--- /dev/null
+++ b/policyengine_us/variables/gov/states/sc/tanf/sc_tanf.py
@@ -0,0 +1,20 @@
+from policyengine_us.model_api import *
+
+
+class sc_tanf(Variable):
+    value_type = float
+    entity = SPMUnit
+    label = "South Carolina TANF"
+    unit = USD
+    definition_period = MONTH
+    defined_for = "sc_tanf_eligible"
+    reference = "https://dss.sc.gov/media/ojqddxsk/tanf-policy-manual-volume-65.pdf#page=131"
+
+    def formula(spm_unit, period, parameters):
+        p = parameters(period).gov.states.sc.tanf
+        # Compute need standard based on federal poverty guidelines
+        fpg = spm_unit("tanf_fpg", period)
+        need_standard = fpg * p.income.need_standard.rate
+        countable_income = spm_unit("sc_tanf_countable_income", period)
+        excess_income = need_standard - countable_income
+        return excess_income * p.payment.rate