How a Rental HELOC Payment Changes From Draw to Repayment

The Quick Read: The payment on a rental home equity line rises at the point where the draw period ends and repayment begins, because principal is added to the interest you were already paying. The balance, the repayment length, and a floating price decide how big the jump is. Across the wholesale network Lendmire works with, an investment line runs a 5-year interest-only draw followed by a 25-year fully amortizing repayment.

• Draw-phase payments cover interest on the drawn balance only, so the debt does not shrink.
• Repayment adds principal on a fixed schedule, so the required payment steps up.
• Pricing floats in both phases and never converts to fixed, so rate moves change the payment too.
• Investment lines are limited to 70% combined loan-to-value (CLTV) and $500,000 total, subject to lender guidelines.
• Model the repayment payment before you draw, not when the draw ends.

Most investors who get burned by a HELOC were not surprised by the rate. They were surprised by the calendar. The line felt cheap for five years, and then the structure changed underneath them.

How Does the Payment Work During the Draw?

During the draw, the required payment is interest on the drawn balance, not on the full credit limit. That makes the line feel inexpensive. It also means principal stays flat unless the borrower chooses to pay extra.

Bankrate’s HELOC calculator page explains the mechanics plainly: the minimum payment grows as you draw more, since interest applies to a larger balance, and a change in the rate changes the required payment as well. Two things move the draw-phase number: how much is outstanding, and where the floating rate sits.

Here is the part many investors miss. On the network’s investment lines, at least 75% of the line is drawn at closing. So the line behaves less like a flexible reserve and more like a loan with an interest-only opening stretch. Anyone planning to leave most of the line undrawn as a safety cushion should know that this structure is not built for that.

What Changes When Repayment Starts?

When the draw ends, new borrowing stops and the payment becomes principal plus interest, spread across a fixed repayment term. On an investment line in the network, that term is 25 years, fully amortizing. The balance finally starts to fall, and the monthly obligation rises to pay for that.

Bankrate’s page notes the same pattern: the payment increases when repayment begins. Interest-only comes first, amortizing second.

What Decides How Big the Step-Up Is?

Four inputs set the size of the jump: the balance carried at the end of the draw, the floating rate at that moment, the length of the repayment term, and whether the borrower paid extra principal during the draw.

A shorter repayment term means a bigger step-up, because the same balance is spread over fewer payments. That is the general rule for any line, and it is why the length of the repayment schedule in your own agreement matters as much as the balance. On the network’s investment lines the repayment term is 25 years.

Extra principal is the one lever fully in your hands. Every dollar paid down during the draw reduces the balance that gets amortized later. An investor who treats the draw phase as a pay-down window ends up with a smaller step.

Think of the calculation in two parts. During the draw, the payment is roughly the drawn balance times the floating rate, divided across twelve months. In repayment, the same balance is divided across a long schedule, and interest is layered on top. No payment dollars are shown here on purpose. The point is the direction and the drivers, and the site’s illustrative calculator can show how the numbers move on your own inputs.

Why a Rate Cap Does Not Protect You

Many investors assume that a lifetime rate cap stops the payment from jumping. It does not. Bankrate notes that lifetime caps limit how high the rate can go. They do nothing about the principal component that starts at repayment.

So there are two separate sources of payment growth. One is the floating price. The other is the structural switch from interest-only to amortizing. A cap addresses only the first.

Stress-Testing the Rental Before You Draw

The most useful test is simple: does the property’s rent still cover the repayment-phase obligation with room to spare? Most investors check the draw payment and stop there. That is the wrong comparison.

Run three cases before drawing:

1. The step-up date. Estimate the repayment payment on the balance you plan to carry, using the 25-year schedule.

2. A vacancy stretch. Remove a month or two of rent and see whether reserves absorb it.

3. A rate move. Raise the floating price and check whether the repayment payment still works.

One caution on language. Clearing a coverage ratio of 1.00 on a DSCR loan is not the same as positive cash flow. DSCR compares rent to principal, interest, taxes, insurance, and any association dues. Repairs, vacancy, management, utilities, and capital expenses sit outside that calculation. The same is true when you test a HELOC payment against rent: the rent has to cover those other costs too.

Lenders can also freeze or reduce a line if property value falls or finances worsen. For an investor, that undercuts treating an undrawn line as a reliable reserve. The CFPB’s consumer brochure on home equity lines describes the product as borrowing, spending, and repaying as you go with your home as collateral, and warns that you could lose the home if you fall behind. It is written for owner-occupied borrowers, but the collateral risk is the same on a rental.

Structure Variations and Edge Cases

Plans differ, and the general rule has exceptions worth naming.

• Interest-only draws are common, not universal. Some plans in the wider market require principal during the draw. Read the agreement.
• Balloon endings. Some plans demand the full balance at the end rather than amortizing it. The network’s investment structure amortizes fully, but any other line you hold should be checked for balloon language.
• Extension or renewal. Some plans allow it and some do not. Do not assume a draw can be extended.
• Large initial draw. With at least 75% drawn at closing, the early payment is already close to its draw-phase maximum.
• Subsequent draws. After closing, the minimum additional draw is typically $1,000, except in Texas at $4,000.

Title is the sharpest structural edge. These lines are held by the individual borrower or a revocable living trust. LLCs, corporations, partnerships, and irrevocable or land trusts cannot hold title. A property already deeded to an LLC needs a vesting change, or a DSCR cash-out instead. That is a real fork in the road, and it flips the decision for many portfolio investors.

Eligibility has other limits. Investment lines require a 700 credit score, and 720 does not buy more leverage, because both tiers reach 70% CLTV. A borrower is limited to three lines, and owning more than 15 financed properties makes a borrower ineligible. Manufactured homes, log homes, co-ops, condotels, commercial, mixed-use, and agricultural-zoned properties are not offered. Availability is limited to Lendmire’s 16 full-service states. All of this is subject to lender guidelines and full file review.

How Does a Second Line or a Second Property Change the Picture?

Each line has its own draw end date. If you hold two lines on two rentals that were opened a year apart, the step-ups arrive a year apart. If both were opened in the same quarter, they arrive together, and your cash flow absorbs both at once.

Map the dates on a single page. List each line’s draw end, the balance expected then, and the rent on the matching property. Stacked resets are where a comfortable portfolio becomes a tight one.

The payment on a HELOC secured by a different property usually sits outside any DSCR calculation, but it still comes out of your real cash flow. And a HELOC on the same property you are refinancing creates a second lien that a DSCR lender will review under its own guidelines.

Options Before the Draw Ends

The right move depends on the investor. There is no single answer.

A closed-end DSCR cash-out refinance gives a fixed amortization schedule, which is a different structure from a floating line. Cash-out tops out around 75% LTV for standard rentals across most of the network, with about 6 months of seasoning as the common expectation, and 70% for short-term-rental collateral. Many select programs start at a 1.00 coverage floor, while a separate select-lender path takes coverage below 1.00 with leverage and terms adjusted. Which one fits depends on credit, reserves, and how the property rents. Final terms depend on the lender’s guidelines, the property type, and the borrower’s complete credit picture.

If you are weighing a smaller line against a larger refinance for your next down payment, Lendmire’s piece comparing a smaller HELOC with a larger cash-out refinance for a rental down payment walks through that tradeoff. For the full picture of how coverage-based loans work, see the complete DSCR loans guide.

The flip point is worth stating plainly. If your rent comfortably covers the repayment payment and you want to keep the line, carrying it is fine. If the repayment number is tight, retiring the line before the switch is usually a better use of the equity than hoping rates drift your way.

A Planning Timeline

• 24 months out: Pull the agreement. Write down the draw end date, repayment term, index, margin, and any cap or balloon language.
• 12 months out: Calculate the repayment payment on the expected balance. Compare it to rent.
• 6 months out: Decide whether to pay down, refinance, or carry. Qualification takes lead time, and values can shift.

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.

Key Terms Defined

Draw period: The stretch when you can borrow against the line and the required payment is typically interest on the drawn balance.

Repayment period: The stretch after borrowing stops, when principal and interest are both due on a set schedule.

CLTV: Combined loan-to-value, meaning all liens on the property added together and divided by its value.

Amortization: Paying a balance down in scheduled installments so it reaches zero at the end of the term.

Payment shock: The jump in the required payment when interest-only payments give way to principal and interest.

Floating pricing: A price tied to an index plus a margin, so it can move over time.

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. Reach the team at 828-256-2183 or request a quote. Programs change and every file is underwritten individually; this is not a commitment to lend.

About Lendmire

Lendmire (NMLS# 2371349) is a mortgage brokerage serving homeowners and real estate investors in its 16 full-service states. Home equity lines of credit are arranged through wholesale lending channels; Lendmire brokers the line and the lender underwrites each application under its occupancy-based guidelines. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. Bankrate – HELOC calculator

2. CFPB – What You Should Know About Home Equity Lines of Credit (HELOC brochure, PDF)