HELOC Calculator (Home Equity Line of Credit)

Estimate your maximum HELOC line, interest-only payments during the draw period, and repayment phase monthly payment. Enter your home value, current mortgage balance, your lender’s CLTV limit, and the HELOC interest rate.

Used to estimate payments; actual HELOC lets you draw as needed.

How This HELOC Calculator Works

We estimate your maximum HELOC as (Home Value × CLTV Limit) − Current First Mortgage Balance, never below $0. Draw-period payments are modeled as interest-only on your chosen initial draw. Repayment payments are calculated on the remaining principal amortized over your repayment period at the same APR (you can adjust the rate to stress-test scenarios).

  • CLTV Limit: Many lenders cap combined loans to 75%–90% of home value.
  • Draw Period: Typically interest-only payments and flexible draws.
  • Repayment Period: Line closes to new draws; principal + interest payments begin.

Disclaimer: This is an educational estimate. Actual HELOC terms vary by lender and may include floors, margins over an index (e.g., SOFR), minimum payments, and rate changes. Review your credit agreement for exact rules.

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