Home Equity Calculator: How Much Can I Borrow?

See how much equity you have in your home and how much a lender may let you borrow with a HELOC or home equity loan at 80%, 85% or 90% combined loan-to-value — plus an estimate of the monthly payment.

Your home

Existing HELOC or second mortgage.

Your results

You may be able to borrow up to

—

Total home equity

—

Current loan-to-value

—

Interest-only payment on the max

—

Your home’s value, split

Borrowing limit at different CLTV caps

Estimate for education only, based on your inputs and the rules explained below. Not financial, tax or legal advice. How we calculate

How to use this calculator

  1. Enter your home’s estimated value. A recent appraisal is best; an online estimate or recent sale prices of similar homes nearby also work. Be conservative.
  2. Enter what you owe on your first mortgage and any existing second mortgage or HELOC.
  3. Pick the lender’s CLTV limit. 80%–85% is typical; check the lender’s requirements.
  4. Enter a HELOC rate to estimate the interest-only payment if you borrowed the full amount.

Home equity vs. what you can borrow

Your home equity is the part of your home you own outright: its current value minus every loan secured by it. But lenders won’t let you borrow all of it. They require you to keep a cushion of equity — typically 15% to 20% of the home’s value — to protect against falling prices and selling costs.

Home equity = home value − all mortgage balances Borrowing limit = (home value × CLTV limit) − all mortgage balances

CLTV limits by loan type

Loan typeTypical maximum
HELOC (primary residence)80%–85% CLTV; some lenders 90%
Home equity loan (fixed-rate)80%–85% CLTV; some lenders 90%
Conventional cash-out refinance80% LTV (primary residence)
FHA cash-out refinance80% LTV
VA cash-out refinanceUp to 90%–100% LTV, depending on the lender
Investment property HELOCOften 70%–75% CLTV, and fewer lenders offer them

How much can I borrow? Examples by home value

With a $200,000 mortgage balance, the most you could borrow at each combined loan-to-value limit is:

Home valueAt 80% CLTVAt 85% CLTVAt 90% CLTV
$300,000 $40,000$55,000$70,000
$400,000 $120,000$140,000$160,000
$500,000 $200,000$225,000$250,000
$600,000 $280,000$310,000$340,000
$750,000 $400,000$437,500$475,000

What it costs each month depends on the loan. Interest-only HELOC payments at 8% and a 15-year home equity loan at 8.5%:

AmountHELOC, interest only at 8%Home equity loan, 15 years at 8.5%
$25,000 $167/mo $246/mo
$50,000 $333/mo $492/mo
$75,000 $500/mo $739/mo
$100,000 $667/mo $985/mo

Compare the two side by side for your amount with the HELOC vs home equity loan calculator.

Worked example

Taylor’s home is worth $450,000 and the mortgage balance is $280,000.

  • Total equity: $450,000 − $280,000 = $170,000 (about 38% of the home’s value).
  • At an 85% CLTV limit: $450,000 × 85% = $382,500 of total debt allowed, so Taylor could borrow up to $102,500.
  • At 80%: $360,000 − $280,000 = $80,000. At 90%: $125,000.
  • Drawing the full $102,500 on a HELOC at 8.25% would mean an interest-only payment of about $705 a month.

What else lenders check

  • Credit score: many HELOC lenders want 680+, and offer better pricing at 740+.
  • Debt-to-income ratio: including the new payment, usually under 43%–50%. Use the DTI calculator.
  • Income and employment: documented, stable income to support the payment.
  • Property type and occupancy: primary residences get the highest limits and lower rates than second homes or rentals.

For typical credit score, DTI and documentation requirements, read HELOC requirements.

Ways to tap your equity

  • HELOC: a revolving line with a variable rate and interest-only draw period — flexible for ongoing projects. Estimate payments with the HELOC payment calculator.
  • Home equity loan: a lump sum at a fixed rate with fixed payments — predictable for one-time costs.
  • Cash-out refinance: replaces your mortgage with a larger one. Often costly if your current rate is low — compare with the cash-out refinance vs HELOC calculator.
  • Reverse mortgage (HECM): for homeowners 62+, converts equity into payments without monthly mortgage payments; the loan is repaid when you move or sell.
Your home is the collateral Borrowing against your home turns unsecured spending into secured debt. If you can’t make the payments, you could lose your home. Borrow only what you need and have a plan to repay it.

HELOC requirements

A home equity line of credit (HELOC) lets you borrow against your home’s value as you need the money, usually at a lower rate than a personal loan or credit card. But lenders don’t approve everyone, and the size of the line and its rate depend on a handful of numbers.

This section covers what lenders typically require, how they calculate how much you can borrow, and what you can do before applying to get a bigger line or a better rate. Requirements vary by lender, so treat the figures below as typical ranges rather than fixed rules.

HELOC requirements at a glance

RequirementTypical minimumFor the best terms
EquityAt least 15%–20% of your home’s value30% or more
Combined loan-to-value (CLTV)Up to 80%–85% (some lenders go to 90%)70%–80% or lower
Credit scoreOften 680; some lenders accept 620–660740 or higher
Debt-to-income ratio (DTI)Commonly 43%; some allow up to 50%Under 36%
IncomeSteady, documented incomeTwo or more years in the same line of work
PropertyOwner-occupied homeSingle-family primary residence

1. Equity: how much you can borrow

Lenders cap the total of all loans against your home as a percentage of its value. That cap is the combined loan-to-value ratio (CLTV).

Maximum HELOC = home value × maximum CLTV − current mortgage balance

For a $400,000 home with a $220,000 mortgage:

  • At an 85% CLTV limit: $400,000 × 0.85 − $220,000 = $120,000
  • At an 80% CLTV limit: $400,000 × 0.80 − $220,000 = $100,000

The value that counts is the lender’s, not yours. For smaller lines, many lenders use an automated valuation model or a drive-by appraisal, and larger lines usually need a full appraisal. If the value comes in lower than you expect, the line shrinks. Try different values and limits in our home equity calculator.

2. Credit score

Your score affects both approval and price. HELOC rates are usually variable: the prime rate plus a margin that the lender sets from your credit score, CLTV and line size. The margin usually stays the same for the life of the line, so a better score saves money every month you carry a balance.

For example, with prime at 7.00%:

  • A borrower with a strong score and a low CLTV might get prime + 0.50% = 7.50%.
  • A borrower with fair credit might get prime + 2.00% = 9.00%.

On a $50,000 balance, interest-only payments would be $312.50 versus $375 a month, a difference of $750 a year.

Before applying, check your credit reports for free at AnnualCreditReport.com and dispute any errors. Paying card balances down can lift your score quickly. See paying your card before the statement date.

3. Debt-to-income ratio

Lenders compare your monthly debt payments, including the new HELOC, with your gross monthly income. How lenders calculate DTI explains the details.

The catch: many lenders count a payment on the full line, even if you plan to borrow only part of it.

Say you earn $8,000 a month before tax and pay $2,500 a month toward your mortgage, car loan and card minimums, a DTI of 31%. You apply for a $100,000 line at 8.5%:

  • If the lender counts an interest-only payment on the full line ($708), your DTI becomes 40.1%.
  • If it counts a 20-year repayment payment ($868), your DTI becomes 42.1%.

Both clear a 43% limit, but not by much. If you’re close to the limit, ask for a smaller line or pay off a small debt first. Check your numbers with our DTI calculator.

4. Income and documents

Expect to provide:

  • recent pay stubs and two years of W-2s, or two years of tax returns if you’re self-employed;
  • your latest mortgage statement;
  • your homeowners insurance declarations page, plus flood insurance if your home is in a flood zone;
  • photo ID;
  • for condos, information about the homeowners association.

5. The property

Owner-occupied homes are the easiest to borrow against. Fewer lenders offer HELOCs on second homes and investment properties, and those that do usually set lower CLTV limits and higher rates. Existing liens, unpaid property taxes or title problems must be cleared first.

Costs to ask about

HELOCs often have low closing costs, and some lenders pay them for you. Ask about:

  • appraisal or valuation fees;
  • annual or membership fees;
  • early closure fees, often charged if you close the line within the first two or three years, sometimes to recover closing costs the lender paid;
  • minimum draw requirements and inactivity fees;
  • the rate cap. A variable-rate HELOC must state the maximum rate it can ever charge. Ask what it is.

What happens after you apply?

Approval commonly takes two to six weeks. After closing on a line secured by your main home, you have three business days to cancel without penalty, under the federal right of rescission. That’s why funds usually become available a few days after closing.

A lender can also freeze or reduce your line in some situations, such as a significant drop in your home’s value or a material change in your finances. Don’t count on an untapped line as your only emergency fund.

How to qualify for more, or pay less

  1. Pay down card balances before applying. It helps both your score and your DTI.
  2. Avoid opening new credit in the months before you apply.
  3. Shop around, including credit unions. Compare margins, fees and rate caps, not just introductory rates.
  4. Ask for the line you need, not the maximum, if your DTI is tight.
  5. Consider a co-borrower whose income can count, if they’re on the home’s title.

What if you don’t qualify?

  • A home equity loan gives you a lump sum at a fixed rate. Lenders typically use similar CLTV limits.
  • A cash-out refinance may work if your current mortgage rate isn’t much lower than today’s rates. Compare them in HELOC vs. cash-out refinance.
  • A personal loan needs no equity but usually costs more.
  • Wait and rebuild. Paying down debt while your home’s value grows can change the answer within a year.

Once you have an offer, use the HELOC payment calculator to see your payments during the draw period and the jump when repayment starts.

Sources:

Frequently asked questions

How much equity can I borrow from my house?
Most lenders let your total mortgage debt — first mortgage plus the new HELOC or home equity loan — reach 80% to 85% of your home’s appraised value, and some go to 90%. The amount you can borrow is that cap minus what you already owe. On a $450,000 home with $280,000 owed, an 85% limit allows about $102,500.
What is CLTV?
Combined loan-to-value (CLTV) is the total of all loans secured by your home divided by its value. It’s the key number for second mortgages such as HELOCs and home equity loans. Loan-to-value (LTV) usually refers to the first mortgage alone.
How do lenders determine my home’s value?
Through a full appraisal, a drive-by appraisal or an automated valuation model (AVM), depending on the loan size and lender. Online estimates can be off by several percent, so enter a conservative value for a realistic limit.
Do I need 20% equity to get a HELOC?
Not always, but you need enough equity to stay under the lender’s CLTV cap after the new line. With an 85% cap, you need more than 15% equity to borrow anything at all, and the more equity you have, the larger the line.
Does borrowing against my home affect my DTI?
Yes. Lenders add the new HELOC or home equity loan payment to your monthly debts, and many cap back-end debt-to-income at about 43%–50%. Check yours with the DTI calculator.

Sources

Key terms

About this calculator. Calcvera’s Home Equity Calculator: How Much Can I Borrow? is written and maintained by Hassan Arslan and was last reviewed on October 6, 2026. Rules and figures are checked against “Mortgages — consumer tools (home equity loans and lines of credit)”, “Selling Guide B2-1.1-01: Occupancy, LTV and CLTV ratios” and the other sources listed above. Results are estimates for education — not financial, tax or legal advice. Found an error? Tell us and we'll fix it. See our methodology and editorial policy.