ENH: Income tax treatment of contributions to betriebliche Altersvorsorge #1118
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Contributions to bAV should not be part of Vorsorgeaufwendungen because they are tax-exempt as long as they are smaller than 8% of the RV-BBG (§ 3 Nr. 63 EStG).
Hence, we need to be more granular than beitrag_private_rentenversicherung_m. We probably need (at least) beitrag_betriebliche_altersvorsorge_m and beitrag_private_altersvorsorge_m.