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HELOC Calculator
Estimate draw and repayment payments on a home equity line of credit.
This is a hypothetical analysis. Saving a scenario does not change My Housing Plan.
Simplified model: full draw upfront at a fixed rate, interest-only during the draw period, then fixed P&I repayment. Does not model revolving balances, rate changes, or fees.
Home & equity
Enter your home value and existing mortgage balance.
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Available equity: $170,000 · Max HELOC: $102,500
HELOC terms
Set your line amount, rate, and draw/repayment periods.
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What if?
Stress-test your HELOC
See how rate increases or a smaller draw affect payments.
HELOC Estimate
Interest-only payments during draw, then amortized repayment.
Payment shock at repayment
When the draw period ends, your payment rises from $354.17/mo to $433.91/mo — an increase of $79.74/mo (23%).
Payment Summary$354.17/mo draw
$354.17
Draw Period Payment (interest-only)
$433.91
Repayment Period Payment
$96,639
Total Interest
$146,639
Total Cost (principal + interest)
Phase Comparison
| Draw Period | Repayment Period | |
|---|---|---|
| Duration | 10 years | 20 years |
| Monthly Payment | $354.17 | $433.91 |
| Payment Type | Interest only | Principal + interest |
| Total Interest | $42,500 | $54,139 |
| Balance | $50,000 | $0 |
During the 10-year draw period you pay $354.17/mo in interest. Repayment rises to $433.91/mo for 20 years.
HELOC Calculator — Draw & Repayment Payments
Estimate payments on a home equity line of credit during the draw period and after repayment begins. Model available equity, interest-only draws, and total interest based on your balance and rate assumptions.
Common questions
- What is a HELOC draw period?
- Most HELOCs have a draw period (often 10 years) when you can borrow up to your limit and may pay interest only. After that, repayment typically converts to principal plus interest over a set term.
- How is HELOC interest calculated?
- HELOC rates are usually variable and tied to a benchmark plus a margin. Interest accrues on your outstanding balance. Payment amounts change as rates and balances change.
Learn
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