Field help: (2019) Debt interest This text refers to the Steuererklärung 2019. You can find the version for the Steuererklärung 2025 at: (2025): Debt interest Tick this box if you want to enter financing costs for the object.The deductible financing costs include:Interest on mortgage loans from banks, building societies and insurance companiesInterest on building saving loansInterest on debts for employer loansDebt interest on loans from relatives or on public loansLeasehold interestInterim financing interest from the bank, if you need money before the loan is paidDebt interest for a supplementary credit or the pre-financing of a saved building saving contractCommitment interest ratesInterest that you have to pay as the buyer of a building until the cash bid is paidDefault interest for a construction installment not paid on time.