"How Much Can I Borrow With a HELOC? Why the Lender's Number Comes Back Smaller"

The valuation comes back at $520,000. Your mortgage statement says you still owe $310,000. That is $210,000 of equity, and by the time you set the statement down, part of it already has a new kitchen in it. Then the lender's number comes back at $106,000, and nobody at the lender did the arithmetic wrong.

The most you can borrow with a HELOC is your home's value multiplied by the lender's maximum combined loan-to-value, minus what you still owe on your first mortgage. The lender then checks that your income can carry a qualifying payment on the line, and some lenders figure that payment on the whole line, including the part you never plan to draw.

I'm Jeff Moran, a mortgage broker in Bluffton, South Carolina, originating since 1996, licensed in fifteen states, NMLS #483943, through C2 Financial Corporation. Below is the arithmetic, the four things that lower your lender's maximum, and the actual limits from the second mortgage lenders I work with (a HELOC is a second mortgage when it comes behind your first).

If you are still deciding between a line of credit, a lump-sum second mortgage and a cash-out refinance, second mortgages and HELOCs explained walks through that choice, and how a fast online HELOC works covers the application itself.

The math behind a HELOC limit

The ceiling comes from three numbers. Your home's value and your first mortgage balance are the two you already have, and the third, the lender's maximum combined loan-to-value, comes from the lender.

Your home's value. For a line of credit this often comes from a computer valuation rather than an appraiser's visit. Quorum's HELOC matrix dated May 1, 2026 uses an automated valuation on lines under $400,000 and a full appraisal above that. Angel Oak's matrix dated May 8, 2026 draws the same line at $400,000 and also orders a full appraisal whenever the combined loan-to-value goes above 80%. How an appraisal works covers that visit.

Your first mortgage balance. This is the balance on your most recent mortgage statement.

The lender's maximum combined loan-to-value. Combined loan-to-value, or CLTV, is the total of every mortgage on the home divided by the home's value. A first mortgage of $310,000 plus a $50,000 line on a $520,000 home is a CLTV of about 69%. Each lender publishes its own maximum, and that maximum is what turns your equity into room.

The CFPB's HELOC booklet, in its January 2014 edition, describes the same method, a percentage of the home's appraised value minus the balance owed on the existing mortgage. Its example uses 75% of a $100,000 home, minus a $40,000 mortgage, for a potential line of $35,000.

The formula, on the home from the opening:

Home value                              $520,000
Lender's maximum CLTV                       80%
Maximum total of all mortgages          $416,000
Your first mortgage balance            -$310,000
                                        --------
Room for a line of credit               $106,000

That is where the $106,000 came from. The $210,000 you counted was equity, and the gap between the two is the share of the home the lender requires you to keep.

Four things that lower a lender's maximum CLTV

A lender's maximum CLTV is a table with several rows, and four things about your file decide which row you land on.

Your credit score

On a one-unit home you live in, your score lands on one of these rows. Quorum's rows come from its HELOC matrix dated May 1, 2026. Angel Oak's come from its matrix dated May 8, 2026, the rows for clients whose income is documented with tax returns and pay records rather than bank statements.

Lender and sheet	Your credit score	Maximum CLTV
Quorum, May 1, 2026	720 and up	95%
Quorum	680 to 719	90%
Quorum	640 to 679	80%
Angel Oak, May 8, 2026	760	90%
Angel Oak	720	85%
Angel Oak	680 or 660	75%

On the $520,000 home above with a $310,000 balance, 95% CLTV leaves you $184,000 of room and 80% leaves you $106,000, a $78,000 difference between two rows of the same table.

The size of the line

The larger the line you ask for, the lower the CLTV the lender allows, and each sheet sets a largest and a smallest line it will open.

Lender and sheet	Largest line	On what terms	Smallest line
Quorum, May 1, 2026	$750,000	CLTV under 65%, score of 680 and up	$25,000
Quorum	$500,000	CLTV above 65%, score of 680 and up
Quorum	$200,000	Score of 660 to 679
Quorum	$100,000	Score of 640 to 659
Angel Oak, May 8, 2026	$750,000	Only at 75% CLTV with a 720 score	$125,000
Angel Oak	$500,000	Its 90% CLTV row

Whether you live in the home

On both sheets, the home you live in gets the most room. If the home is a second home or an investment property, Angel Oak's sheet limits you to 80% CLTV with a 720 score and 75% with a 700, and caps the line at $400,000. Quorum's HELOC allows a second home at 90% CLTV with a 680 score and does not take investment properties. Its separate investment HELOC, on the same May 1, 2026 product snapshot, stops at 80% CLTV and a $250,000 line.

The type of property

Angel Oak lists single-family homes, townhomes, two-unit properties and warrantable condominiums (a condo in a project that meets the lender's project standards) as eligible, so a three- or four-unit property is outside that program. Quorum takes one- to four-unit properties and steps your ceiling down as the units go up, 90% on a two-unit home you live in with a 680 score, and 75% on a three- or four-unit.

The full credit limit can count, even if you never draw it

A line of credit has two numbers, the credit limit and the amount you have drawn. Luxury Mortgage's Simple Seconds guidelines, version 3.0 dated May 12, 2026, use the credit limit for the CLTV test. The CLTV ratio is calculated "by dividing the total of all liens (First Mortgage Loan Amount + all subordinate financing, including the credit limit of any Home Equity Lines of Credit regardless of amount drawn) by the value to be utilized for the transaction."

Under that rule, a $150,000 line you plan to use $40,000 of still has to fit inside the CLTV maximum at the full $150,000, and an existing HELOC with a zero balance counts at its full limit.

Some lines require a draw at closing. Angel Oak's HELOC requires a minimum initial draw of 80% of the line, and Quorum's sheet says no draw is required at closing. Section 1026.40 of Regulation Z requires the lender to disclose any minimum draw requirement in the disclosures it gives you with the application.

Your income still has to carry the line

The CLTV table tells you the most the lender could lend on the home. Your debt-to-income ratio (DTI), your monthly debt payments divided by your gross monthly income, tells the lender whether your income can carry a line that size.

Lenders qualify you on a payment larger than the interest-only payment Angel Oak and Quorum charge during the draw period, the years you can borrow against the line. Quorum's sheet uses a principal and interest payment at the prevailing rate, paid off over a 20-year term. Angel Oak's sheet says the DTI is "calculated at start rate plus 2% of the maximum line over the repay period." Both are testing whether you can afford the line once principal is due.

The ratio limits step down with credit too. Quorum uses two ratios, a housing ratio, which is your mortgage payments alone against your income, and a total debt ratio, which adds the rest of your monthly debts. It allows 43% and 45% with a score above 720, and 38% and 43% below it. Angel Oak allows a total DTI of 50% with a score of 700 or higher and 45% below that. It also requires at least $2,500 a month left over after your debts, rising to $3,500 when the DTI is over 45%. How debt-to-income works covers how the debts and the income are counted.

So your answer is the smaller of two numbers, the room the CLTV table leaves and the line whose qualifying payment fits under the DTI limit.

Finding your own number

1. Your most recent mortgage statement. The balance is one of the three inputs, and the rate on it tells us whether a second mortgage or a cash-out refinance fits you better.
2. A realistic value for the home. A recent sale on your street, a county assessment and an online estimate are all fine starting points.
3. Your credit score. Angel Oak uses the middle of your three bureau scores, and the primary wage earner's middle score when there is more than one client on the file. That score picks your row of the table.
4. How much of the line you will use. A smaller line means a smaller qualifying payment, which is easier to fit under the DTI limit than a line sized to all of your equity.
5. Your monthly debts. The qualifying payment on the line goes on top of them.

Common mistakes with HELOC amounts

Applying right after buying. Quorum requires six months of ownership and uses the lower of the purchase price or the appraised value before that. Angel Oak requires twelve months of ownership. A recent gain in value does not count yet.

Listing the home for sale and then applying. Angel Oak will not take a home that was listed for sale in the last six months. Quorum will, with the CLTV capped at 80%, once the listing comes down.

Sizing the line to the equity instead of the need. A line you will never fully use can push your DTI past the limit and cost you a smaller line that would have fit.

An example, with invented numbers

Numbers below are made up to show the mechanism. Renee, her home, her lender and the lender's table are all invented, and nothing here is a quote.

Renee lives in a single-family home. The lender's automated valuation puts it at $520,000, her first mortgage balance is $310,000, and her middle credit score is 735. The lender in this example allows 90% CLTV at her score on a primary residence.

Home value                              $520,000
Maximum CLTV at a 735 score                 90%
Maximum total of all mortgages          $468,000
First mortgage balance                 -$310,000
                                        --------
Room for a line of credit               $158,000

Renee wants $120,000 for a renovation. The lender qualifies her on a principal and interest payment for the full $120,000 over a 20-year term, on top of her first mortgage, taxes, insurance and a car payment. If the total fits under the lender's ratio, the $120,000 line is approved. If it does not, the line gets smaller until it fits, even though the CLTV table left $158,000 of room.

Your next step

Availability differs by lender and by state. Quorum's HELOC is not offered in Texas, Angel Oak does not offer its owner-occupied program there, and each lender keeps its own state list. If you have a HELOC question, I'll run your value, your balance and your score across the second mortgage lenders I work with. I confirm which ones can lend where your home is and show you which one leaves you the most room.

The rate tool on this site prices first mortgages. It does not price a home equity line or a second mortgage, so for those I quote you directly. You are welcome to call me at (843) 765-0000 or email me at jeff@solverya.com. Please have your current mortgage statement, an idea of your home's value, and the amount you have in mind.

If the question underneath is whether to replace your first mortgage with a cash-out refinance instead of adding a second, the rate tool on the homepage can show you pricing for that scenario on your own time. You can choose a rate option that works best for you, and that selection can change later.

Nothing here is a loan approval, a denial or a commitment to lend. Lender limits, valuation methods and documentation rules vary by lender, by state and by file, which is why every sheet above carries its date.

Common questions

How much of my home's value can I borrow with a HELOC?

It depends on the lender's maximum combined loan-to-value and your credit score. On the sheets I work from, dated May 2026, the ceiling on a one-unit primary residence is as high as 95% of the home's value with a 720 or higher score. With a score in the 640s or 660s it is 75% or 80%. Your first mortgage balance comes off that total, and what is left is the most the line can be.

Does my credit score change how much I can borrow on a HELOC?

Yes. Lenders publish their maximum CLTV in rows by score. On Quorum's May 1, 2026 sheet the primary-residence maximum is 95% at 720 and above, 90% from 680 to 719, and 80% from 640 to 679, and the maximum line size drops at lower scores too.

Can I get a HELOC on a second home or an investment property?

Often, with less room. Angel Oak's May 8, 2026 matrix limits a second home or investment property to 80% CLTV with a 720 score and 75% with a 700, with a line cap lower than the cap on the home you live in. Quorum's HELOC takes second homes at 90% CLTV with a 680 score and does not take investment properties, and its separate investment property HELOC stops at 80% CLTV with a smaller line cap of its own. On both the Angel Oak and Quorum sheets, the home you live in gets the highest ceiling.

Does the lender count the whole line or only what I draw?

Often the whole line. Luxury Mortgage's Simple Seconds guidelines count the full credit limit of a home equity line in the combined loan-to-value test regardless of the amount drawn. Angel Oak's sheet figures the qualifying payment for your debt-to-income ratio on the maximum line.

Can a lender lower my HELOC limit after it is opened?

Yes, in limited situations. Under Regulation Z section 1026.40, a lender may stop additional draws or reduce the credit limit during any period in which the value of the home declines significantly below the appraised value used for the line.