Estimate your HELOC payment — the low interest-only amount during the draw period and the higher payment once repayment begins.
HELOCs usually have a draw period (interest-only, often ~10 years) then a repayment period (principal + interest). Rates are typically variable, so real payments move with the index. Estimate only — not lending advice.
A home equity line of credit has a draw period where you can borrow and typically pay interest only — a low, tempting payment — followed by a repayment period where you pay principal and interest, so the payment jumps. Because most HELOCs carry a variable rate, both amounts change if rates move.
Interest-only = balance × monthly rate; repayment amortizes the balance over the term
During the draw period you're not paying down principal at all. When repayment starts, the full balance must amortize over the remaining term, so principal is suddenly added to the interest.
Usually not — HELOCs are commonly variable, tied to the prime rate. Some lenders offer fixed-rate lock options on portions of the balance.
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It uses standard formulas and recalculates the moment you change a value, so the math is exact for the inputs you enter. Treat the result as a reliable planning estimate; for decisions with legal or tax consequences, confirm the figures with a qualified professional.
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Last reviewed: September 2026. Free to use, no signup — HELOC Payment Calculator by ToolWise Digital.
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