How Much a HELOC Payment Jumps When the Draw Period Closes

The Quick Read: The payment jumps because the required payment changes from interest-only to principal plus interest, and the size of the jump depends on three inputs: the balance carried out of the draw, the length of the repayment term, and the index-plus-margin pricing in force at that point. No single percentage applies to every line. It can be calculated exactly from the agreement.

• The balance does not shrink during an interest-only draw, so the whole amount you drew gets re-amortized.
• A shorter repayment term steepens the jump; a longer one softens it.
• Variable pricing can stack on top of the amortization step-up.
• Some lines end in a balloon instead of amortizing, which is a different problem entirely.
• On the network Lendmire works with, investment-property lines carry a 5-year draw and a 25-year repayment, so the step is built into the structure from day one.

Most investors who get burned by this did not misread the math. They never ran it. A line used for a down payment or a rehab feels cheap while only interest is due. The bill arrives when the contract says it does.

Key Terms Defined

Draw period: The stretch of the line when you can borrow, repay, and borrow again, and when the required payment is often interest-only.

Repayment period: The stretch after draws stop, when each payment must include principal.

Interest-only payment: A payment covering only the interest on the drawn balance, so principal stays flat.

Re-amortization: Recalculating the payment so the full balance is retired over the repayment term.

Balloon payment: A structure where the entire remaining balance comes due at the end of the draw instead of being spread out.

CLTV: Combined loan-to-value, meaning all liens on the property measured against its value.

Why Does the Payment Jump at All?

The payment jumps because the formula changes, not because the lender changed its mind. During the draw, the payment is roughly balance times annual rate divided by twelve. In repayment, the same balance must be paid off over a fixed term, so every payment carries a slice of principal.

The CFPB describes a HELOC as an open-end line that lets you borrow repeatedly against home equity, with spending allowed up to the limit during the draw period. Interest accrues only on what you have actually drawn, not on the full limit. That part is easy to forget.

NerdWallet’s HELOC explainer calls the larger repayment-period bills a rude awakening for borrowers who paid only the minimum. Experian says many borrowers find the repayment payment more than double the interest-only one. Treat that as a general observation, not a rule. No authoritative source gives one universal percentage, and a figure quoted from a calculator page applies only to that calculator’s inputs.

What Sets the Size of the Jump?

Three inputs set it: the balance at draw end, the repayment term, and the rate then in effect. Change any one and the jump moves. Balance matters most because it scales everything. A line drawn to the limit produces a much larger absolute step than one drawn halfway.

Term length is the lever people underestimate. The same balance spread over a long repayment window produces a gentler step than one squeezed into a short window. NerdWallet says draws can run up to 10 years with repayment up to 20, while Experian describes draws of 5 to 10 years followed by a 20-year repayment. Because the ranges differ, the contract is the only authority on your line.

Here is a qualitative sensitivity read, without dollar figures:

Amortization Effect vs. Rate Effect

Two separate forces can raise the payment, and a smart investor splits them. The amortization effect is certain: it happens even if pricing never moves, because principal is added. The rate effect is uncertain: most HELOCs float with a benchmark such as prime, so a rise during the draw adds to the step at the handoff.

This matters for diagnosis. If your payment climbs during the draw with no new borrowing, that is the rate effect. If it climbs at the draw-end date, that is amortization, possibly with a rate effect on top. The fixes differ. Paying principal early attacks the first. Refinancing into a different structure may help with either, depending on where pricing stands when you act.

On the network Lendmire works with, pricing floats across both the draw and the repayment period and never converts to fixed. So the payment can keep moving after the jump. It is not a one-time step.

How Does This Look on an Investment Property Line?

Investment-property lines through Lendmire’s wholesale network are narrower than most investors expect. The ceiling is 70% CLTV, the minimum credit score is 700, and the maximum line is $500,000. Investment lines run a 5-year interest-only draw followed by a 25-year fully amortizing repayment. There is no shorter option.

At least 75% of the line is drawn at closing, which means the interest-only payment is built on a large balance from the start. Qualification runs on the interest-only payment calculated on the maximum draw, with a 50% maximum DTI. In other words, the lender tests the draw-period payment, not the repayment payment. That is the gap worth stress-testing yourself.

For primary residences and second homes, there are two structures. One has a 3-year draw and a 17-year repayment. The other has a 5-year draw and a 25-year repayment. The shorter 17-year runway steepens the jump compared with the 25-year runway on the same balance. Ceilings are occupancy-tiered: on a primary residence, 90% CLTV exists only at a 720-or-better credit profile and up to $500,000. Those figures apply to owner-occupied homes, not rentals.

Two structural points matter for landlords. Title must be held by the individual borrower or an inter vivos revocable living trust, so a property deeded to an LLC cannot take a line without a vesting change. And these lines are available only in Lendmire’s 16 full-service states, narrower than the 41-market DSCR footprint. All figures are subject to lender guidelines and full file review, and Lendmire arranges the loan as a broker rather than lending directly.

Find Your Own Numbers

Calculating your jump takes four items from your agreement and latest statement. Pull these before doing anything else:

1. The draw-end date. It is written in the agreement. New draws stop on that date.

2. The repayment term. This sets how many payments retire the balance.

3. The index and margin. These determine pricing at the handoff.

4. Any cap, balloon clause, renewal option, or prepayment penalty.

The CFPB’s older HELOC booklet includes a comparison worksheet that asks exactly these questions: whether payments fully amortize, whether a balloon applies, whether the plan can be renewed, and whether the lender will refinance when the draw ends. The same set of questions works on a line you already hold.

Then run the stress test. Take your balance at draw end, spread it over the remaining term, and compare the result to the rent the property produces. If the rent still comfortably covers the full monthly obligation, the jump is a budget item. If it does not, the jump is a decision point.

Options by Timeline

The earlier you act, the more options you have. Here is a practical sequence:

NerdWallet notes that refinancing the HELOC into a fixed-rate loan is one way to manage the shock, and Nasdaq says some lines can be converted from variable to fixed, depending on the lender. Whether your line offers that is a contract question, not a general one.

An investor with a firm exit before the draw ends, such as a sale or a refinance, may never feel the step-up. That is the cleanest scenario. The dangerous one is the investor who assumed a refinance would be available and then discovered that credit, combined leverage, or the property’s eligibility had changed. Refinance access is never assured.

Where the General Rule Breaks

The standard pattern is interest-only, then amortizing. Several variations break it.

Balloon structures. Experian says some HELOCs carry a balloon payment, meaning the entire balance is due when the draw ends. BiggerPockets makes the same point. A balloon is a contract feature, not a universal one, and it turns a payment problem into a payoff problem.

Principal from day one. The CFPB booklet says some plans build principal into the minimum payment. Their jump is smaller. But the booklet also notes the principal portion may still not repay the loan by the end of the term.

Short repayment windows. A repayment window that is short relative to the draw produces the steepest step. Check the window, not just the draw length.

Rental restrictions. The CFPB’s HELOC brochure warns that renting out your home may be prohibited under the line’s terms. Read the occupancy and rental clauses before relying on rent to carry the line.

Prepayment penalties. Some lenders charge them. That can undercut a pay-down-early strategy.

Rate movement in repayment. On variable lines the payment can keep changing after the handoff. The jump is the first move, not necessarily the last.

What the Decision Looks Like for an Investor

For a landlord, the HELOC payment and the property’s coverage ratio live in separate worlds. A DSCR loan compares rent to the property’s principal, interest, taxes, insurance, and any HOA dues. A HELOC used for a down payment or rehab adds a floating, step-up obligation that does not appear in that ratio. Clearing 1.00x on the DSCR loan is not the same as positive cash flow, since repairs, vacancy, management, and capex sit outside the calculation, and a second obligation sitting beside it makes the gap wider.

Three questions decide whether a line fits:

• Is there a firm exit before the draw ends? If yes, the jump may be irrelevant.
• Can the portfolio absorb the repayment-period payment today? Test it now, not later.
• Is the equity better pulled another way? A cash-out refinance on a rental is tested on the property’s rental coverage rather than a draw-period payment, and most programs in the network cap it around 75% LTV with about six months of seasoning. The tradeoff is a different structure, not a free lunch. See Lendmire’s complete DSCR loans guide for how that route works.

The HELOC makes sense when the draw is short-lived, the use of funds is clear, and the repayment payment has already been stress-tested. It becomes risky when the borrower treats the draw-period payment as the permanent cost. For the same transition from a bank statement borrower’s side, Lendmire’s piece How a Bank Statement HELOC Payment Jumps After the Draw Period covers the qualification angle.

Tax treatment can depend on how the funds are used and how the property is held; investors should keep clear records and speak with a qualified tax professional before relying on any deduction.

If you are considering a home equity line and want to see how the numbers work, Lendmire can help you compare HELOC options based on the property, the equity available, credit profile, combined leverage, and your goals. The site’s illustrative calculator can give a rough estimate, not a quote.

About Lendmire

Lendmire is a mortgage brokerage (NMLS# 2371349) arranging home equity lines of credit — primary-residence, second-home and investment-property lines — through a wholesale lending network in its 16 full-service states. Eligibility is determined by the lender on each file. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. CFPB – What is a HELOC?

2. NerdWallet – HELOC explainer

3. Experian – Draw period on a HELOC

4. CFPB – HELOC booklet

5. Nasdaq – HELOC pros and cons

6. BiggerPockets – What is a HELOC