Bridge finance for your Heat pump

Estimate your monthly repayments and see how a later grant payment, used as a lump-sum repayment, could affect your outstanding loan.

Based on the supplied bank information: loans from €10,000 to €75,000, fully repaid over 5, 10, 15 or 20 years, with a fixed borrowing rate that depends on the term.

Finance calculator

Financing amount €10,000 to €75,000

Expected grant / lump-sum repayment e.g. 21.000 €

Loan term until full repayment

Borrowing rate p.a.5,69 %

Annual effective rate5,84 %

The interest rate is selected automatically for the chosen term. Without a lump-sum repayment, the loan is fully repaid by the end of that term.

Assumed grant payment date

6 months 12 months

Monthly payment before the lump-sum repayment

0 €

Instalments paid before the grant arrives 0 €

Interest paid before the grant arrives 0 €

Outstanding loan before the grant arrives 0 €

Outstanding loan after the grant repayment 0 €

Request financing → (German) Compare 6 / 12 months

Non-binding example calculation, not a loan approval or rate guarantee. Advice, assessment and the loan agreement are provided exclusively by the finance partner. The calculation assumes monthly payments at the end of each month and a lump-sum repayment after the relevant monthly payment. It assumes that this lump-sum repayment is free of charge. Confirm with the bank how it affects future instalments or the remaining term. Rates are based on the supplied bank information dated 9 October 2026; your individual loan offer is decisive.

Comparison by period until payment of the grant

The initial monthly installment remains the same for the same loan amount, the same interest rate and the same term.

Grant paid after	Monthly instalment	Instalments paid	Interest costs	Outstanding loan before the grant arrives	Outstanding loan after the grant repayment

Loan amount: €10,000 to €75,000

Duration: 5, 10, 15 or 20 years; fully repaid at the end of the term

Lump-sum repayment: assumed to be free of charge in this calculator; check your loan terms

Security: No mortgage registration or additional collateral

Permitted purpose: Heat pump or solar installation; a quote is required

Ownership: Applicants must be registered property owners

Property use: At least 90% residential use

Drawdown: A maximum of two partial payments within six months

DiY-Heizung: Your heat pump. Your financing. Interhyp flyer with loan amounts from 10,000 to 75,000 euros, terms of 5 to 20 years and the contact details of Marie Kanwischer and Petra Cihlar.

Personal financing advice

Your contacts at Interhyp

Would you like to finance your heat pump? Contact Marie Kanwischer or Petra Cihlar directly and mention DiY-Heizung as the partner. Have your desired loan amount and, if available, your quote ready.