What Happens When Your HELOC Draw Period Ends (and How to Beat the Reset)
If your HELOC draw period ends this year, plan on your payment rising somewhere between 25 and 75 percent. On a $60,000 balance at 8.5%, the interest-only payment is $425 a month. The day the draw period closes, that same balance on a 10-year repayment schedule costs $743.91. Nothing about your rate changed. The loan just started collecting principal.
The numbers in this post are example math, worked out in full so you can check them. Your own HELOC's terms live in your loan agreement, and that document governs.
Why the payment jumps
A HELOC runs in two phases. During the draw period (commonly 10 years) you can borrow against the line, and most lenders only require you to pay the interest each month. Then the draw period ends. Whatever you owe at that moment gets converted into a regular amortizing loan over the repayment term, often 10 or 20 years. Two things happen at once: you lose the ability to borrow, and principal joins the bill.
Interest-only payments feel cheap because they are. You could pay $425 a month for ten straight years on that $60,000 line and still owe exactly $60,000. The repayment phase is where the loan finally makes you pay for the house money you spent.
The jump, in numbers
Example: $60,000 drawn at 8.5% (variable), draw period ending.
| Phase | Monthly payment | What you're paying |
|---|---|---|
| Draw period (interest-only) | $425.00 | Interest only |
| Repayment over 20 years | $520.69 | Principal + interest |
| Repayment over 10 years | $743.91 | Principal + interest |
A 20-year repayment term softens the jump to about 23 percent. A 10-year term pushes it to 75 percent. Check your agreement for which one you have, because the difference on this balance is $223 a month for a decade.
One more wrinkle: HELOC rates float. If prime moves up between now and your reset, the repayment payment is computed at whatever the rate is then, so the table above can shift under you.
How to beat the reset
During the draw period, every extra dollar you send is pure principal. The interest-only payment already covers the interest, so a $500 principal payment reduces the balance by the full $500. The balance at the moment the draw ends is what gets re-amortized, which means principal paid early shrinks the reset payment permanently.
Say the draw ends three years from now and you start sending an extra $500 a month today:
| Plan | Balance at reset | 10-year repay payment | 20-year repay payment |
|---|---|---|---|
| Pay interest only | $60,000 | $743.91 | $520.69 |
| Extra $500/mo for 36 months | $42,000 | $520.74 | $364.49 |
The extra $500 a month costs you $18,000 over three years. In exchange, the 10-year reset payment lands within a dollar of what you're already comfortable paying today, instead of jumping $319. Whether that trade is worth it depends on what else that $500 could be doing, which is exactly the comparison a payoff calculator exists to run.
The ARM version of the same problem
An adjustable-rate mortgage has the same two-phase shape with different clothes on. You get a fixed intro rate for 5, 7, or 10 years, and then the rate adjusts to market. The remaining balance gets re-amortized at the new rate over the remaining term.
Example: $300,000 borrowed on a 30-year 5/1 ARM at a 3.25% intro rate.
| Moment | Rate | Monthly payment |
|---|---|---|
| Years 1 through 5 | 3.25% | $1,305.62 |
| First reset (2% cap hit) | 5.25% | $1,605.51 |
| Later years, if the rate keeps climbing | 6.25% | $1,767.39 |
After five years of minimum payments the balance sits at $267,920, and that's the number the new rate applies to. Most ARMs cap the first adjustment (a 2/2/5 cap structure limits the first jump to 2 points, each later one to 2, and lifetime movement to 5), so read your note to find your caps. The caps decide your worst case.
Principal prepayment works here the same way it does on the HELOC. Send an extra $500 a month through the fixed period and the balance at reset drops to $235,393. At that same 6.25%, the payment becomes $1,552.81 instead of $1,767.39. You spent $30,000 to cut the reset shock roughly in half, and all of it went to your own balance rather than to interest.
Run your own numbers
The free debt calculator models both of these directly, with no signup. For a HELOC it takes the draw period, repayment rate, and repayment term and works the two phases for you. For an ARM it takes the fixed period, the adjusted rate, and the remaining term. Enter your balance and it shows the payment on both sides of the reset, plus what extra principal between now and then does to the total interest.
If you want the watching handled for you, Zoninga's AI agent checks your accounts daily, flags an upcoming reset the way it flags an upcoming bill, and proposes moves for you to approve. It never moves your money. You can also connect Claude or ChatGPT to your Zoninga data and ask the reset questions in plain English.
Questions people ask
What is payment shock?
The jump in your required monthly payment when a loan changes phases: a HELOC draw period ending, an ARM rate adjusting, or an interest-only term expiring. The loan terms allowed it all along. It only feels sudden because the cheap phase lasted years.
Does paying extra during the draw period lower my reset payment?
Yes, dollar for dollar on the balance. The repayment payment is calculated from whatever you owe on the day the draw period ends, so a balance you've cut by 30 percent produces a reset payment about 30 percent smaller.
Can I refinance instead of paying it down?
Sometimes, and for some people it's the better move. Rolling a HELOC into a fixed-rate loan or refinancing an ARM before the reset trades the variable-rate risk for closing costs and whatever fixed rate the market offers that day. Run both paths with real numbers before choosing. This post is educational example math, not personalized financial advice.
How do I find my draw period end date?
It's in your HELOC agreement, usually stated as a draw period length from the origination date. Your lender's site or a phone call gets you the exact date. Put it on a calendar well ahead of time. Three years of runway is worth a lot more than three months.