How much HELOC can I get with $100k in equity?

So you have $100,000 in home equity and want to convert some of it to cash with a home equity line of credit (HELOC)?

Chances are you won't be able to borrow all $100,000. How much you can tap depends on your home's current value and how much you owe on your current mortgage balance.

Online tools, such as Better's digital preapproval process, can help you find out exactly how much equity you can use.

Your home is used as collateral for a HELOC. Failure to make payments could result in foreclosure and the loss of your home.

...in as little as 3 minutes — no credit impact

How lenders calculate your HELOC limit

When you apply for a HELOC, your lender isn't just looking at your equity. They're looking at your combined loan-to-value ratio, or CLTV. This figure measures your total secured debt against your home's appraised value.

The formula is straightforward:

(Home value × maximum CLTV%) − mortgage balance = maximum HELOC limit

Your home's current appraised value drives the calculation. Most lenders require a formal appraisal, or in some cases an automated valuation, to confirm what your home is worth today. That number, not your original purchase price, is what matters.

The maximum CLTV percentage is set by the lender. The market standard is 80%, meaning your mortgage and HELOC together cannot exceed 80% of your home's value. Some lenders extend this to 85% or 90% for qualified borrowers.

The CLTV formula, worked through with $100k in equity

The critical insight most borrowers miss: $100,000 in equity doesn't automatically mean you can borrow $100,000. Your borrowing limit depends on how that $100k relates to your home's total value.

If your home is worth $500,000 and you owe $400,000, you have $100k in equity, but at an 80% CLTV cap, your lender will only lend up to $400,000 total ($500,000 × 0.80). You already owe that amount, so your HELOC limit is $0. At 90% CLTV, the ceiling rises to $450,000, leaving $50,000 in available credit.

If your home is worth $1,000,000 and you owe $900,000, you also have $100k in equity. But at 80% CLTV: ($1,000,000 × 0.80) − $900,000 = −$100,000. Still nothing. At 90%: ($1,000,000 × 0.90) − $900,000 = $0. You'd need a lender offering 95% CLTV, which is rare, to access anything in that scenario.

This is why home value matters as much as equity amount: the same $100k in equity in a lower-priced home gives you proportionally more accessible credit than in a higher-priced home with a large mortgage.

$100k equity HELOC scenarios — what you can actually borrow

The table below shows your maximum HELOC limit across four common home values, all assuming $100,000 in equity (mortgage balance = home value minus $100,000), at both an 80% and 90% CLTV cap.

Home value	Mortgage balance	Equity	80% CLTV limit	90% CLTV limit
$250,000	$150,000	$100,000	$50,000	$75,000
$350,000	$250,000	$100,000	$30,000	$65,000
$450,000	$350,000	$100,000	$10,000	$55,000
$600,000	$500,000	$100,000	Not eligible at 80%	$40,000

Example is for illustrative purposes only. Figures represent theoretical maximums based on CLTV calculation only. Actual HELOC eligibility and limit depend on credit profile, debt-to-income ratio, lender guidelines, appraisal results, and other underwriting factors. Availability of 90% CLTV products depends on lender and borrower qualifications.

The key takeaway: a $600,000 home with $100k in equity doesn't qualify for a HELOC at the 80% CLTV threshold at all. The mortgage already consumes 83% of the home's value. At 90% CLTV, there's $40,000 available. A $250,000 home with the same $100k in equity has much more accessible credit at both thresholds.

Use the HELOC calculator to run the math for your specific home value and mortgage balance.

Other factors that affect how much you can borrow

Your CLTV calculation determines your theoretical maximum. But several other factors can reduce, or in some cases eliminate, what you can actually access.

Credit score: affects both approval and which CLTV tier you qualify for

Most lenders require a minimum credit score of 620 for a HELOC. But the score floor matters for more than just approval. Lenders typically reserve the highest CLTV tiers (85–90%) for borrowers with scores of 700 or above. A borrower with a 640 score might qualify for an 80% CLTV HELOC on the same property where a borrower with a 740 score qualifies for 90%, resulting in a meaningfully larger credit line from the same equity.

If your score is in the 620–680 range, the scenario table above may overstate your available credit at the 90% tier. Running the 80% column is a more conservative and likely accurate estimate.

Debt-to-income ratio (DTI) is the second major qualifier. Lenders typically cap DTI at 43%, meaning your total monthly debt payments (including the new HELOC payment at its maximum draw) cannot exceed 43% of your gross monthly income. If your current DTI is already near that ceiling, your available HELOC limit may be reduced even if the CLTV math supports a larger amount.

Home type also matters. Primary residences qualify for the highest LTV tiers. Second homes and investment properties face stricter caps, typically 75–80% CLTV even with lenders who offer 90% on primary residences. If the property with $100k in equity is a rental or vacation home, use the lower CLTV columns above as your starting point.

Finally, most lenders set a minimum draw requirement. If your calculated limit falls below the lender minimum, you may not qualify regardless of your equity or credit profile. If your scenario table shows a smaller number, it may be worth exploring a home equity loan instead, which can have lower minimums for one-time needs.

...in as little as 3 minutes — no credit impact

How to use your HELOC limit once you know it

A HELOC works as a revolving line of credit, not a lump sum. Once approved, you have a draw period (typically 10 years) during which you can borrow up to your limit as needed and make interest-only payments on what you've drawn. You don't pay interest on the unused portion of your credit line. For a detailed breakdown of payment mechanics, see how HELOC payments work.

When the draw period ends, the repayment phase begins. You can no longer borrow against the line, and monthly payments shift to cover both principal and interest on the outstanding balance. Because HELOC rates are variable and tied to market indexes, your payments can change over time, which is worth factoring into how much of your available credit you draw at once.

HELOC vs. cash-out refinance: which makes more sense with $100k in equity?

If your goal is to access a significant portion of your $100k in equity, a cash-out refinance is the main alternative to a HELOC. The decision usually comes down to rate structure and whether you want to replace your existing mortgage.

A HELOC leaves your current mortgage in place and adds a separate revolving credit line. Rates are variable, which can work in your favor if rates fall. It's best suited for ongoing expenses, projects with unpredictable costs, or when you want flexible access to funds without a fixed repayment schedule.

A cash-out refinance replaces your entire mortgage with a new loan at a higher balance. The rate is typically fixed, and you're rolling the access cost into your main mortgage payment. If current rates are lower than your existing mortgage rate, this can make financial sense. For a full comparison, see our guide on cash-out refinance vs. HELOC.

Frequently asked questions

How much HELOC can I get with $100k in equity?

It depends on your home's total value and your lender's CLTV cap. With $100k in equity on a $350,000 home, you could access up to $30,000 at 80% CLTV or $65,000 at 90% CLTV. On a $250,000 home, those figures rise to $50,000 and $75,000 respectively. Use the CLTV formula — (home value × max CLTV%) − mortgage balance — to calculate your specific scenario.

Does $100k in equity mean I can borrow $100k on a HELOC?

Not necessarily. Equity is the difference between your home's value and your mortgage balance, but lenders don't let you borrow against 100% of that gap. Most cap the combined debt at 80–90% of your home's appraised value. In some scenarios with a high mortgage relative to home value, $100k in equity can leave very little HELOC room at the 80% CLTV threshold.

What is CLTV and why does it matter for a HELOC?

CLTV stands for combined loan-to-value ratio. It measures the sum of all loans secured by your home as a percentage of your home's appraised value. Most conventional HELOC products cap CLTV at 80–85%. Lenders offering 90% CLTV give you access to more equity, but typically reserve those terms for borrowers with strong credit profiles.

My home is worth $350,000 and I owe $250,000. How much HELOC can I get?

You have $100k in equity on a $350,000 home. At 80% CLTV: ($350,000 × 0.80) − $250,000 = $30,000. At 90% CLTV: ($350,000 × 0.90) − $250,000 = $65,000. Your actual limit will also depend on your credit score and DTI, which can reduce these figures during underwriting.

Does my credit score affect how much HELOC I can get, or just my rate?

Both. Your credit score affects your interest rate, but it also affects which CLTV tier you qualify for. Many lenders reserve 85–90% CLTV products for borrowers with scores above 700. A lower score can cap you at 80% CLTV even if the lender offers higher tiers, which can significantly reduce your accessible credit line.

What happens to my HELOC limit if my home's value drops after I open it?

Your approved HELOC limit is set at origination based on the appraisal at that time. However, if your home's value drops significantly, your lender may freeze or reduce your available credit, a standard HELOC contract provision. You keep what you've already drawn, but access to the undrawn portion can be suspended.

Is $100k in equity enough to qualify for a HELOC?

It depends on your home's value. Most lenders require at least 15–20% equity to qualify. If your home is worth $250,000 and you owe $150,000, your 40% equity position is strong. If your home is worth $600,000 and you owe $500,000, you have 16.7% equity. At 80% CLTV, there is no remaining room for a HELOC draw. Credit score (620+ minimum), DTI, and lender minimums also apply.

What's the difference between an 80% and 90% CLTV HELOC?

The CLTV cap determines how much of your home's value can back secured debt. At 80% CLTV on a $350,000 home, mortgage plus HELOC cannot exceed $280,000. At 90%, it can reach $315,000. The difference, $35,000 in this example, is additional accessible equity. Lenders offering 90% CLTV products typically require stronger credit profiles and may charge a slightly higher rate.

See how much you can actually borrow

$100,000 in equity is a meaningful starting point, but the CLTV math determines how much of it you can put to work. A $250,000 home with $100k in equity gives you far more HELOC room than a $600,000 home with the same equity, simply because of how LTV ratios interact with your mortgage balance.

The fastest way to get your real number is a HELOC pre-approval. It takes minutes, doesn't affect your credit score, and tells you exactly what you qualify for based on your actual home value, mortgage balance, and financial profile. For more on tapping your equity, see how to get equity out of your home and our guide on HELOC tax deductions.

...in as little as 3 minutes — no credit impact