Not financial advice. Mortgage FV Calculator is a software calculator, not a personal-finance product or advisory service. It computes standard financial functions and displays the results for your convenience. Nothing here constitutes, or is intended to constitute, financial, investment, tax, legal, mortgage, credit, or insurance advice. Always consult a qualified professional before making any financial decision.

HELOC calculator

A home equity line of credit has two phases: an interest-only draw period, then a fully amortising repayment period where the payment jumps. Model both before you borrow.

Your equity

Home value

Mortgage balance

Max combined LTV

Amount to draw

HELOC rate

Draw period

Repayment period

Available credit line

$145,000

85% CLTV less your mortgage

Amount drawn

$60,000

Within your limit

Draw-period payment

$425/mo

Interest only

Repayment payment

$521/mo

Principal + interest over 20 yr

Total interest

$115,967

Across both phases

Total paid

$175,967

Principal + all interest

The payment shock

Your payment rises by $96/mo when the draw period ends — a 23% increase. HELOC rates are usually variable, so a rate rise during the draw period increases both figures.

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