Scroll table to see full amortization schedule (first 24 months shown).
HELOC Payment Calculator After Draw Period
What This Calculator Does and Why It Matters
One of the most common financial surprises homeowners face is the sudden jump in monthly payments when a HELOC transitions from the draw period to the repayment period. This free HELOC payment calculator after draw period helps you see exactly what that new payment will be before it hits your bank account.
During the draw period — typically 10 years — most borrowers pay interest only on whatever balance they have used. When the repayment period begins, that same balance must be paid off in full, usually over 10 to 20 years. This shift often causes monthly payments to double or even triple. Knowing this in advance gives you time to plan, refinance, or pay down principal early.
According to the Consumer Financial Protection Bureau, many HELOC borrowers are caught off guard by this payment increase. This calculator takes the guesswork out of the transition.
How to Use This Calculator
Step-by-Step Instructions
- Enter the outstanding balance on your HELOC at the end of the draw period — this is how much you owe when repayment begins.
- Enter the annual interest rate currently on your HELOC. Check your latest statement or lender portal for the current rate.
- Enter the repayment period in years. Most HELOCs have a 20-year repayment period after a 10-year draw period.
- Optionally, enter what you are currently paying per month during the draw period — the calculator will show you the payment increase.
- Enter any extra monthly payment you plan to make to pay down the balance faster.
- Click Calculate Payment to see your new monthly payment, total interest, total amount paid, and a 24-month amortization schedule.
The Formula Explained
Breaking Down the Formula
The repayment period payment uses the standard loan amortization formula. The monthly interest rate is the annual rate divided by 12. The number of payments is the repayment period in years multiplied by 12. Monthly payment equals the balance multiplied by the monthly rate times (1 plus monthly rate) raised to the power of n, divided by that same (1 plus monthly rate) raised to n minus 1.
This is the same formula used for any fully amortizing loan, such as a mortgage. The key difference from the draw period is that now every payment includes both principal and interest instead of interest only.
Example Calculation with Real Numbers
You have a HELOC balance of $50,000 at the end of your draw period. Your interest rate is 8.5% and you have a 20-year repayment period. Your new monthly payment works out to approximately $434. During the draw period, if you were paying interest only on the same balance at 8.5%, your payment was about $354 per month. That is an increase of $80 per month — and your total interest over the repayment period would be around $54,000.
When Would You Use This
Real Life Use Cases
This calculator is most useful for homeowners who opened a HELOC several years ago and are approaching the end of their draw period. It is also valuable for anyone considering a HELOC today who wants to understand the full cost of the loan over its life. If you are comparing this against a home equity loan, our HELOC vs home equity loan cost calculator lets you compare both options side by side.
Specific Example Scenario
A homeowner in Texas used a HELOC to fund a kitchen remodel in 2015. The 10-year draw period ends this year and the remaining balance is $38,000 at a current rate of 9%. The repayment period is 20 years. Using this calculator, they find their new monthly payment will be $342, up from $285 in interest-only payments. They decide to add an extra $100 per month to pay it off four years early and save over $10,000 in interest.
Tips for Getting Accurate Results
Use Your Current Variable Rate, Not Your Original Rate
Most HELOCs have variable interest rates tied to the prime rate. The rate you had when you opened the account may be very different from today. Always use your current rate from your most recent statement. If you want to stress-test the numbers, run the calculator again with a rate 1% to 2% higher to see a worst-case scenario.
Check the Exact End Date of Your Draw Period
Your repayment period does not start when you assume it does — it starts on the exact date written in your HELOC agreement. Log into your lender portal or call your bank to confirm the exact transition date. Some lenders send a notice 30 to 60 days before the draw period ends. You can also use our HELOC cost comparison tool to decide whether refinancing into a fixed home equity loan makes more sense before repayment begins.
Consider Refinancing Before Repayment Starts
If the new payment feels too high, you may have options. Some lenders allow you to refinance the HELOC balance into a new fixed-rate loan before repayment kicks in. Compare this against simply continuing with the HELOC. The mortgage APR to daily interest calculator can help you compare the true cost of both options on a per-day basis.
Frequently Asked Questions
What happens to my HELOC payment after the draw period ends?
After the draw period ends, you can no longer borrow from the line of credit. Your outstanding balance enters a full repayment period, usually 10 to 20 years. Your monthly payment now includes both principal and interest, which typically causes the payment to increase significantly compared to the interest-only draw period payment.
Can I extend my HELOC draw period?
Some lenders allow draw period extensions or offer to refinance the HELOC into a new one. This is not guaranteed and depends on your lender’s policies, your creditworthiness, and the current equity in your home. You must contact your lender directly before the draw period ends to ask about options.
What if I cannot afford the new repayment period payment?
If the new payment is too high, your options include refinancing the balance into a home equity loan or cash-out refinance, making extra payments during the draw period to reduce the balance, or contacting your lender to discuss hardship programs. Do not wait until the repayment period begins — take action at least six months in advance.
Is HELOC interest tax deductible during repayment?
HELOC interest is only tax deductible if the funds were used to buy, build, or substantially improve your home. If you used the HELOC for personal expenses like debt consolidation or vacations, the interest is not deductible. Consult a tax professional to confirm your specific situation before claiming the deduction.
How is the HELOC repayment payment different from the draw period payment?
During the draw period, most borrowers pay interest only on the amount they have drawn. During the repayment period, the full outstanding balance is amortized over the remaining years — meaning both principal and interest are included in every payment. This is why the payment often jumps sharply at transition.
What is a typical HELOC repayment period length?
Most HELOCs have a repayment period of 20 years after a 10-year draw period, for a total loan term of 30 years. Some lenders offer 10-year or 15-year repayment periods. The shorter the repayment period, the higher the monthly payment but the less total interest you pay.
Can I pay off my HELOC early during the repayment period?
Yes. Most HELOCs do not have prepayment penalties, so you can make extra payments or pay off the balance in full at any time during the repayment period. Paying extra reduces your balance faster and saves significant interest over the life of the loan.
Does my interest rate change during the repayment period?
If your HELOC has a variable rate, your interest rate will continue to change during the repayment period based on the prime rate plus your margin. Some lenders allow you to convert to a fixed rate at the start of the repayment period — ask your lender if this option is available before the draw period ends.
Conclusion
The transition from the draw period to the repayment period is one of the most financially significant moments in a HELOC’s life. Understanding your new payment before it arrives gives you time to plan, refinance, or reduce your balance. This free calculator makes that process quick and clear.
If your calculated payment is higher than you expected, act early — there are options available before the repayment clock starts ticking.