How Much an Undrawn HELOC Costs a Homeowner Each Year

The Quick Read: An undrawn home equity line costs nothing in interest, because interest builds only on money you actually borrow. Your yearly cost is whatever flat fees the lender attaches to keeping the line open. Those range from $0 on many lines to a few hundred dollars on others.

• Interest on a zero balance is zero.
• Only two fees repeat each year on an idle line: an annual fee and an inactivity fee.
• Experian lists an annual fee of up to $400 and an inactivity fee of up to $50 as possible costs.
• Closing costs, cancellation fees, and conversion fees are one-time charges, not yearly ones.
• A lender can still freeze or shrink an idle line, which is a cost of its own.

A home equity line of credit (HELOC) is a revolving credit line secured by your property. You borrow against it when you need cash, and you owe interest only on what you pull out. An “undrawn” line is one with nothing borrowed. This article walks through what such a line costs, why the advertised numbers hide those costs, and how investors should weigh the carry.

What Does an Undrawn Line Cost Each Year?

The yearly cost is the sum of two possible fees: an annual (or membership) fee and an inactivity fee. Many lines charge neither. Some charge one. A few charge both. The spread across published sources runs from nothing to a few hundred dollars, and no single “typical” figure is honest.

Here is how the two recurring fees work:

The CFPB’s consumer guidance on HELOC fees lists the full set of charges a lender may attach: application, origination, appraisal, title, an inactivity fee, an annual fee, a cancellation fee, and a conversion fee. Only the annual and inactivity fees repeat while the line sits idle. Everything else is a one-time event at opening, exit, or conversion.

Experian puts the possible ceiling at up to $400 for an annual fee and up to $50 for an inactivity fee. Treat those as ceilings, not averages. Plenty of lines come in well below them, and plenty charge nothing.

What Do You Pay Once, Whether or Not You Borrow?

Opening costs are sunk the moment the line closes. CBS News puts closing costs at 2% to 5% of the line, or $2,000 to $5,000 on a $100,000 line. That is the largest cost most owners ever see on an idle line, and it dwarfs the yearly fees.

Plenty of lenders advertise no-closing-cost lines. Those usually trade the savings for something else, such as a higher interest cost once you draw, an annual fee, or a minimum hold period. Free at the door often means paid somewhere down the hallway.

The practical move is to spread the opening cost across the years you expect to hold the line. A line you keep for ten years carries a lighter annual burden than one you close in year two, especially if early closure triggers a cancellation fee. The CFPB says that fee usually applies within the first two or three years.

How Do the Costs Add Up? A Simple Walkthrough

Holding cost is the annual fee multiplied by the years the line stays open. Draw periods often run many years, so small numbers compound into real ones.

Run the arithmetic this way, using modeled assumptions rather than quotes. Say a line carries a $100 annual fee and stays idle for a ten-year draw period. The recurring cost is $1,000 over the decade. Add the one-time opening cost from the lender’s schedule, divide by ten, and you have an honest yearly figure.

Now flip it. Say the lender charges no annual fee but an inactivity fee posts if you go a full year without drawing. A single small draw may reset the clock. CBS News notes that inactivity windows are typically a year or more and suggests a small draw as a way around the fee. That article is a few years old, so use it as general direction, not as a current schedule.

One wrinkle matters here. Some products require a draw at closing. On the investment lines Lendmire’s wholesale network places, at least 75% of the line is drawn at closing. In that structure, “undrawn” is not really on the menu, and the question shifts from fee carry to interest on a balance you must take. Check this before you assume you can open a line and leave it untouched.

Why Doesn’t the Advertised APR Show These Costs?

The annual percentage rate (APR) on a HELOC reflects interest, not fees. Federal home-equity disclosure rules require a statement that the APR does not include costs other than interest. So a low advertised number tells you nothing about holding cost.

Compare the fee schedule, not the headline. The disclosures must be grouped together and delivered at application, which gives you one place to read every charge before you commit. The rule requires disclosure. It does not cap fees or set typical amounts, so the lender’s own paperwork is the only authority on your number.

What Can Still Happen to an Idle Line?

A line you never draw on is not guaranteed to be there when you need it. CBS News says a lender may, in rare cases, reduce the limit or close an unused line, especially if your credit or the home’s value falls. That is the worst possible timing for an investor counting on the line as emergency liquidity.

This is the hidden cost of a standby line. You pay a small carry for access that can vanish in the same downturn that makes you want it. Weigh that honestly.

Other things to expect:

• Credit reporting varies. Whether an open, unused line helps or hurts your score depends on how the lender reports it. Treat any claim of a fixed effect with suspicion.
• Qualification effects vary. Some lenders count a hypothetical payment on the full limit when they review your other loans. Treatment differs by lender, so ask before you open a line you plan to leave idle.
• Payoff on sale. If you sell the home, the line generally must be paid off in full.
• Oversizing costs you. Fees can scale with line size, so size the line to the need, not to the maximum.

Where Does the General Rule Break?

“Undrawn means free” breaks in several named places. Each is worth knowing before you sign.

Fee-bearing lines. Annual and inactivity fees exist on some lines, even at a zero balance. Alliant Credit Union’s education page confirms an annual fee is charged even if you never draw on lines that carry one.

Waivers and conditions. Lenders sometimes waive fees in year one or when you keep a deposit relationship. These terms are lender-specific, so read the schedule rather than assume.

Early closure. Walk away in the first two or three years and a cancellation fee may apply. The prepayment penalty Experian describes runs about 2% of the balance on lines that carry one.

Investor-property lines. Consumer protections written for owner-occupied homes may not map neatly onto a business-purpose line on a rental, so lender terms govern. Read the agreement closely.

Network ceilings differ by occupancy. Market-wide, equity lines reach higher leverage than anything on an investment property here. On the select wholesale lines Lendmire brokers, an investment-property line tops out at 70% combined loan-to-value (CLTV), with a 700 minimum credit score and a $500,000 maximum line. Primary-residence lines reach 90% CLTV only at a 720-or-better credit profile, and the maximum line there is $750,000. Those lines are available only in Lendmire’s 16 full-service states, and every figure is subject to lender guidelines.

Is the Carrying Cost Worth It?

It depends on what the line replaces. A standby line is a form of insurance, and the idle carry is usually small next to the opening cost. The real cost arrives when you draw.

The comparison that matters is holding cost times years open, set against the one-time cost of other financing at the moment you need money. For an investor with a rental that has built equity, the alternative is often a cash-out refinance on a DSCR loan. DSCR (debt service coverage ratio) compares a property’s rent to its monthly mortgage obligation, and a DSCR loan is reviewed primarily on property-level rental income covering the payment, subject to lender guidelines. A HELOC, by contrast, is judged on you: your credit, your debt-to-income ratio, and your title.

That title point is the sharpest structural difference. HELOC lines on this network must be held by an individual or a revocable living trust. An LLC cannot hold title. A property already deeded to an LLC needs a vesting change, or it points toward a DSCR cash-out instead, subject to lender program eligibility. Lendmire’s piece on a large bank statement HELOC draw versus a new first covers when the larger draw question comes up.

The honest read: a standby line makes sense when the fee schedule is light or zero, you will hold it for years, and you can tolerate the line shrinking in a downturn. It makes less sense when you would pay an annual fee for a decade and a freeze could hit exactly when you need cash.

Most investors treat the DSCR route as a separate tool. For the broader picture, the complete DSCR loans guide explains how rent coverage, leverage, and credit fit together. And clearing a coverage ratio is not the same as positive cash flow, since repairs, vacancy, and management sit outside the calculation.

How Do You Find and Reduce These Fees?

Read the disclosure first. Then ask the lender direct questions:

1. Is there an annual or membership fee, and is it waived in year one?

2. Is there an inactivity fee, and how long is the window?

3. Does one small draw satisfy it?

4. What is the cancellation fee, and how many years does it last?

5. Does the lender require a draw at closing?

6. Under what conditions can the line be frozen or reduced?

The CFPB also notes a lender cannot charge a nonrefundable application fee until three days after you receive the disclosures. Use that window to compare schedules side by side. 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. Reach the team at 828-256-2183 or request a quote. The site’s illustrative calculator can give a rough estimate, nothing more.

Key Terms Defined

HELOC: a revolving credit line secured by your property, where interest accrues only on the amount drawn.

Undrawn line: a HELOC with no balance, so no interest accrues.

Inactivity fee: a charge some lenders post when you go a set period without drawing.

Annual fee: a flat yearly charge for keeping the line open, posted whether or not you borrow.

CLTV: combined loan-to-value, the total of all loans on the property divided by its value.

DSCR: debt service coverage ratio, a property’s rent compared with its monthly mortgage obligation.

About Lendmire

As a mortgage broker (NMLS# 2371349), Lendmire helps homeowners and real estate investors in its 16 full-service states open home equity lines of credit arranged through wholesale lenders. Lendmire is never the lender; line amounts, ceilings and terms are set by the lender under its guidelines. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.

References

1. Experian: Can I Open a HELOC and Not Use It?

2. CFPB Ask CFPB: HELOC fees

3. CBS News: Can I open a HELOC and not use it?

4. CBS News: Surprising HELOC costs

5. ecfr.io: Section 1026.40

6. eCFR 12 CFR 1026.40

7. Alliant Credit Union: HELOC closing costs and fees