HELOC Calculator
Calculate HELOC payments and available credit line.
The HELOC Calculator estimates payments on a Home Equity Line of Credit, showing the cost during the draw and repayment periods. Use this to evaluate HELOCs for home renovations, debt consolidation, or other major expenses, comparing variable-rate flexibility with fixed-rate stability.
Examples
Home Renovation HELOC
Frequently Asked Questions
What is a HELOC?
How much can I borrow with a HELOC?
Are HELOC interest rates fixed or variable?
Quick Tips
- •Draw-period interest-only payments are lower but ensure you have a repayment plan for the principal.
- •If you expect rates to rise, lock in a fixed rate for a portion of your balance.
- •Use a HELOC strategically for high-interest debt consolidation or home improvements, not daily purchases.
- •Keep reserves available in case rates spike significantly during repayment.
- •Monitor your home value; if it drops significantly, your available credit may be reduced.
The HELOC Calculator estimates payments on a Home Equity Line of Credit, showing the cost during the draw and repayment periods. Use this to evaluate HELOCs for home renovations, debt consolidation, or other major expenses, comparing variable-rate flexibility with fixed-rate stability.
How to Use This Calculator
Enter your home value, mortgage balance, and desired draw amount. The calculator will show your available credit line, interest-only payments during the draw period, and principal-and-interest payments during repayment. Adjust the draw period and repayment term to see how they affect total cost.
Understanding the Formula
Available Credit = (Home Value x Credit Limit %) - Mortgage Balance. Interest-Only Payment = Draw Amount x (Annual Rate / 12). P&I Payment uses standard amortization: M = P * r(1+r)^n / ((1+r)^n - 1).
Examples
Home Renovation HELOC
A homeowner with a $400,000 home and $250,000 mortgage balance draws $50,000 at 8.5% APR. During the 10-year draw period, they pay $354/month in interest only. During the 20-year repayment period, payments rise to $434/month.
Frequently Asked Questions
What is a HELOC?
A Home Equity Line of Credit (HELOC) is a revolving credit line secured by your home equity. It typically has a draw period (where you can borrow) followed by a repayment period.
How much can I borrow with a HELOC?
Most lenders allow a combined loan-to-value (CLTV) ratio of 80-85%. So if your home is worth $400,000 and you owe $250,000, you may be able to borrow up to $90,000 (at 85% CLTV).
Are HELOC interest rates fixed or variable?
Most HELOCs have variable interest rates tied to the prime rate. Some lenders offer a fixed-rate option for portions of your balance. Rates can change monthly or quarterly.
Assumptions & Limitations
- Interest rate is variable and may increase during the draw and repayment periods.
- CLTV ratio is 80-85%; actual lending limits depend on credit and income.
- Home value remains constant; real estate values fluctuate.
- No additional draws occur during repayment (balance is fixed from the end of draw period).
- Lender does not cancel or freeze the line due to market conditions or credit events.