Finance category
Mortgage, loan, investing, tax, and money calculators.
HELOC Reset Shock Calculator
Typical HELOC: 10-year interest-only draw, then 15-20 year amortization. When the draw ends, monthly payment jumps dramatically as principal starts amortizing. This calculator projects the shock.
Post-reset monthly payment
$738
Payment shock
$136
Shock %
22.5%
Current interest-only payment
$602
How the math works
$85K balance at 8.5%, 20-year amortization post-reset: IO payment $602 → amortizing $738. $136 shock (23%).
Pay down balance before reset or refi into a fixed home equity loan. Planning 18+ months ahead gives best options; scrambling at reset time means accepting whatever rate the lender offers.
How to Use
- Enter current HELOC balance and rate.
- Enter draw-period remaining and amortization period after reset.
- See current payment vs post-reset payment and % shock.
Frequently Asked Questions
When does HELOC draw end?
Typically 10 years from origination. Some HELOCs: 5 years. Check loan docs. Lender sends a notice 6-12 months before draw end.
Can I refinance before the reset?
Yes — into a new HELOC (fresh 10-year draw), a home equity loan (fixed), or a cash-out refinance. Shop options starting 12-18 months before draw ends.
What's the shock typically?
On a $100K balance at 8% with 20-year amortization: IO = $667/mo, P&I = $836/mo — 25% shock. Larger at higher rates or shorter amortization.
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