Field help: Has interest (debt interest) been incurred for the financing of the property? Select "yes 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 companies Interest on building saving loans Interest on debts for employer loans Debt interest on loans from relatives or on public loans Leasehold interest Interim financing interest from the bank, if you need money before the loan is paid Debt interest for a supplementary credit or the pre-financing of a saved building saving contract Commitment interest rates Interest that you have to pay as the buyer of a building until the cash bid is paid Default interest for a construction instalment not paid on time.