diff --git a/projects/final-project/main.py b/projects/final-project/main.py
new file mode 100644
index 0000000..e8ee25e
--- /dev/null
+++ b/projects/final-project/main.py
@@ -0,0 +1,147 @@
+#Travel Expense Manager
+
+#Ask the user for the number of travel days and the total budget available.
+travel_days=int(input("Enter the number of travel days: "))
+available_budget=float(input("Enter the total budget available for the trip: "))
+
+#Using a for loop, ask the user to enter daily expenses for different categories.
+#Use the assignment operator (+=) to accumulate daily expenses into total variables for each category.
+#Use a while loop to allow the user to correct any expense entry errors.
+lodging_expenses=0
+transport_expenses=0
+meals_expenses=0
+attractions_expenses=0
+
+for i in range(travel_days):
+    is_valid_input=False
+    while not(is_valid_input):
+        lodging=input("Enter daily expenses for lodging: ")
+        replaced_input=lodging.replace(".","")
+        if replaced_input.isnumeric():
+            lodging=float(lodging)
+            is_valid_input=True
+        else:
+            print("Invalid input")
+    lodging_expenses+=lodging
+
+    is_valid_input=False
+    while not(is_valid_input):
+        transport=input("Enter daily expenses for transport: ")
+        replaced_input=transport.replace(".","")
+        if replaced_input.isnumeric():
+            transport=float(transport)
+            is_valid_input=True
+        else:
+            print("Invalid input")
+    transport_expenses+=transport   
+
+    is_valid_input=False
+    while not(is_valid_input):
+        meals=input("Enter daily expenses for meals: ")
+        replaced_input=meals.replace(".","")
+        if replaced_input.isnumeric():
+            meals=float(meals)
+            is_valid_input=True
+        else:
+            print("Invalid input")
+    meals_expenses+=meals  
+
+    is_valid_input=False
+    while not(is_valid_input):
+        attractions=input("Enter daily expenses for attractions: ")
+        replaced_input=attractions.replace(".","")
+        if replaced_input.isnumeric():
+            attractions=float(attractions)
+            is_valid_input=True
+        else:
+            print("Invalid input")
+    attractions_expenses+=attractions 
+
+#Calculate the total expense.
+#Print to screen a summary of total expenses for each category and the grand total of expenses.
+
+total_expense=lodging_expenses+transport_expenses+meals_expenses+attractions_expenses
+
+print(f"Lodging expenses: {lodging_expenses:.2f} $")
+print(f"Transport expenses: {transport_expenses:.2f} $")
+print(f"Meals expenses: {meals_expenses:.2f} $")
+print(f"Attractions expenses: {attractions_expenses:.2f} $")
+print(f"Total expense: {total_expense:.2f} $")
+
+#Ask the user if they want to make changes to the charges and allow editing of previous charges.
+#Automatically update expense totals based on user changes.
+#I used a while loop to allow the user to correct any changes entry errors.
+
+is_valid_input=False
+while not(is_valid_input):
+    ask_change=input("Do you want to make a change? (Enter yes/no): ")
+    if ask_change=="yes" or ask_change=="no":
+        is_valid_input=True
+    else:
+        print("Invalid input")
+
+if ask_change=="yes":
+    is_valid_category=False
+    while not(is_valid_category):
+        ask_category=input("Enter a category (lodging/transport/meals/attractions): ")
+        if ask_category=="lodging" or ask_category=="transport" or ask_category=="meals" or ask_category=="attractions":
+            is_valid_category=True
+        else:
+            print("Invalid category")
+
+    if ask_category=="lodging":
+        is_valid_change=False
+        while not(is_valid_change):
+            lodging=input("Enter change for the lodging expenses: ")
+            replaced_input=lodging.replace(".","")
+            if replaced_input.isnumeric():
+                lodging=float(lodging)
+                lodging_expenses=lodging
+                is_valid_change=True
+            else:
+                print("Invalid change")
+
+    elif ask_category=="transport":
+        is_valid_change=False
+        while not(is_valid_change):
+            transport=input("Enter change for the transport expenses: ")
+            replaced_input=transport.replace(".","")
+            if replaced_input.isnumeric():
+                transport=float(transport)
+                transport_expenses=transport
+                is_valid_change=True
+            else:
+                print("Invalid change")
+
+    elif ask_category=="meals":
+        is_valid_change=False
+        while not(is_valid_change):
+            meals=input("Enter change for the meals expenses: ")
+            replaced_input=meals.replace(".","")
+            if replaced_input.isnumeric():
+                meals=float(meals)
+                meals_expenses=meals
+                is_valid_change=True
+            else:
+                print("Invalid change")
+
+    elif ask_category=="attractions":
+        is_valid_change=False
+        while not(is_valid_change):
+            attractions=input("Enter change for the attractions expenses: ")
+            replaced_input=attractions.replace(".","")
+            if replaced_input.isnumeric():
+                attractions=float(attractions)
+                attractions_expenses=attractions
+                is_valid_change=True
+            else:
+                print("Invalid change")
+
+    total_expense=lodging_expenses+transport_expenses+meals_expenses+attractions_expenses    
+    print(f"Updated total expense: {total_expense:.2f} $")
+
+#Show if the available budget has been respected or expenses have been exceeded.
+if total_expense>available_budget:
+    print("You have exceeded your budget!")
+else:
+    print("You respected the available budget!")