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HELOC Calculator

This HELOC calculator estimates how much home equity you could borrow against, and what a home equity line of credit actually costs across its two phases: interest-only payments during the draw period, then full repayment afterward. Enter your home's value, existing mortgage, and draw amount to see both.

Currency:
$400,000

Your home's current estimated market value.

$220,000

What you still owe on your primary mortgage.

$50,000

How much of your available equity you plan to actually borrow.

9.00%

Typically variable, tied to the prime rate.

10 yrs

Years you can borrow and make interest-only payments before repayment begins.

15 yrs

Years to fully repay the drawn balance after the draw period ends.

$120,000

An estimate based on an 85% combined loan-to-value cap, common among HELOC lenders.

Interest-only payment during draw$375
Payment during repayment period$507
Total interest over both periods$86,284
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Frequently asked questions

What's the difference between a HELOC and a home equity loan?+

A HELOC is a revolving credit line you can draw from repeatedly during the draw period, with a variable rate. A home equity loan is a single lump sum with a fixed rate and fixed repayment schedule from day one — more like a second mortgage.

Can I pay down principal during the draw period?+

Yes, and it's usually a good idea if you can — any extra payment during the draw period reduces the balance the repayment-period payment will be calculated on, lowering that future payment.

Why is the 85% loan-to-value figure just an estimate?+

Actual limits vary by lender, your credit profile, and location — some lenders go up to 90% or cap it lower. Treat this as a planning estimate and confirm your real available line with a lender.

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