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Interest-Only Loan Calculator
Estimate interest-only payments and total interest cost.
About This Calculator
During the interest-only period, your payment covers no principal — your balance stays flat. This calculator shows how much the interest-only phase costs and what your fully amortizing payment will look like afterward. It's especially useful for HELOCs, construction loans, and investment property mortgages.
Estimates only — not financial, tax, legal, or investment advice. Verify important results with a qualified professional before making decisions.
monthly payment = principal × (annual rate ÷ 12); total for period = monthly × (years × 12)
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