Interest-Only Mortgage Calculator

Calculate interest-only mortgage payments for different payment frequencies. Compare interest-only vs. fully amortizing payments.

Enter values and calculate.

How it works

Interest-only payments cover only the loan interest, not principal. After the interest-only period, payments increase to pay both principal and interest.

Example

$400K loan at 6% = $2,000/month interest-only. After 5 years, payment jumps to $2,398/month to amortize remaining balance over 25 years.

FAQ

What happens after the interest-only period?

Payments increase significantly to pay both principal and interest over the remaining loan term. The loan must be fully paid by the maturity date.

Do I build equity with interest-only payments?

No, you only build equity through property appreciation or additional principal payments. The loan balance remains unchanged with interest-only payments.

Who should consider interest-only loans?

Borrowers expecting significant income increases, those with irregular income, or investors prioritizing cash flow over equity building.

What are the risks?

Payment shock when the interest-only period ends, no principal reduction, and higher total interest costs compared to traditional mortgages.

Are interest-only loans available today?

Yes, but less common since 2008. Usually available for jumbo loans, investment properties, or borrowers with significant assets and income.