HELOC Calculator
Estimate a HELOC borrowing limit based on home value and LTV, plus simple payment scenarios. It can also estimate payments for simple interest-only or amortized scenarios, depending on how your HELOC is structured.
Inputs
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$
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Payment scenario (optional)
$
%
Results
Estimated max HELOC line
$100,000.00
Drawn amount$50,000.00
Estimated payment$375.00/mo
Interest-only payment: $375.00/mo · Amortized: $633.38/mo
Max line is estimated as (home value × LTV%) − current mortgage balance.
How to use it
- Enter your home value, current mortgage balance, and max LTV %.
- Review the estimated maximum credit line.
- Optionally enter an amount drawn and an interest rate to estimate payments.
- Adjust inputs to compare scenarios quickly.
FAQ
CLTV compares your total mortgage debt (current mortgage + HELOC) to your home’s value. Many lenders set a maximum CLTV (often in the 75–90% range) based on credit and risk.
A common estimate is: max line ≈ (home value × max CLTV) − current mortgage balance. Lenders may also factor in fees, credit score, income, and appraisal results.
Lenders may use a different home value (appraisal), lower LTV caps, or require buffers for fees and risk.
Many HELOCs have an interest-only draw period and an amortized repayment period, but terms vary.
Many HELOCs have variable rates tied to an index plus a margin. Some lenders offer fixed-rate conversion options. Always check your lender’s terms.
No. Some HELOCs have fees or closing costs—check your lender’s disclosures.
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Disclaimer
Estimates only. HELOC pricing and availability depend on lender terms, credit, and appraisal results. Not financial advice.