Home Equity Calculator

Calculate a transparent home-equity and combined-loan-to-value scenario from the property value, first-mortgage balance, second-lien balance, and a user-selected cap. Test a separate fixed-payment borrowing scenario without treating the result as an offer.

Example Scenarios

$450k Home

$280k mortgage • $80k tappable

80% LTV Comparison

$350k • 83% LTV

Existing HELOC

$320k + $40k HELOC

High Equity

$600k • 67% owned

Home Equity Inputs View Results

Borrowing Estimate (optional)

Equity Summary

Total Home Equity
$0
Equity % Owned
0%
Primary LTV
0%
Tappable Equity (80% cap)
$0
Monthly Payment (borrowed)
80% Current-Value Comparison

Tappable Equity at All LTV Caps

LTV CapMax Total DebtTappable EquityCombined LTV

Value Sensitivity (tappable at selected cap)

Home ValueChangeTappable Equity

Borrowing Cost Breakdown

Amount borrowed
Monthly payment
Total interest
Total repaid

HELOC rates are often variable; this estimate prices a fixed-rate home equity loan on the drawn amount.

How This Is Calculated

Total equity is home value minus all loans. Tappable equity is (value × LTV cap) − total loans, floored at zero. The 80% card is only a current-value comparison; it does not determine mortgage-insurance cancellation or eligibility. Borrowing cost uses M = P · r(1+r)ⁿ / ((1+r)ⁿ − 1) on the amount borrowed.

Enter your details to see the math…
Transparent calculator

Check the method before you use the estimate

This page documents the formula, assumptions, and any specific external sources used for this tool.

See the method
Planning estimate What this result can and cannot tell you

Educational home-equity estimate only. This is not financial advice, an appraisal, credit decision, loan offer, or advice to borrow against a home. Verify value, liens, lender limits, payment structure, fees, rate risk, and repayment consequences with the relevant provider or qualified professional.

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Method & sources

How the Home Equity Calculator works

These notes describe the calculation used on this page and the assumptions that can change a real-world result.

Equity, combined loan-to-value, and borrowing scenario Total equity = max(0, home value - primary mortgage - second-lien balance); combined LTV = (primary mortgage + second-lien balance) / home value; modeled available amount at selected cap c = max(0, home value * c - total liens).

Assumptions on this page

  • Home value, existing balances, selected LTV cap, rate, and term are entered by the visitor. The calculator does not obtain an appraisal, title search, lien status, or lender policy.
  • The borrowing payment scenario assumes a fixed rate and a fully amortizing term. It does not model variable-rate, draw-period, fee, or product-specific features.
  • The 80%, 85%, and 90% rows are comparative cap inputs within this calculator, not claims that a lender will make credit available at those levels.
  • The result is a planning calculation, not a credit offer, appraisal, approval, or recommendation to use home equity.

Sources used on this page

Guide & Reference

Everything behind the Home Equity Calculator

Formulas, reference charts, and detailed answers — expand any section you need.

Equity is an arithmetic starting point, not cash in hand

Home equity is the difference between a property's current value and the balances secured by it. This calculator keeps those components visible: enter the home value, first-mortgage balance, and any second-lien balance. It reports equity, primary loan-to-value (LTV), and combined LTV so you can see how the total debt relates to the value you entered.

That number is a planning snapshot. A property value can change, an appraisal can differ from an estimate, and a lender can consider title, lien priority, product rules, income, credit, payment history, costs, and other requirements. The page does not fetch any of those facts. Use the output to organize a question for a lender or counselor, not to assume funds are available.

How the equity and LTV calculations work

The calculation has only three core lines. It subtracts first and second liens from the entered value to get equity. It divides each relevant balance by value to show LTV. If you choose a cap for a borrowing scenario, it multiplies the value by that cap and subtracts all existing liens; a negative result is set to zero.

Transparent equity math
Equity = home value - primary mortgage - second-lien balance
Modeled available amount = home value × selected cap - total liens

The cap is an input for sensitivity testing, not an eligibility promise.

Diagram showing property value separated into home equity, primary mortgage, and second-lien balance with a selected combined loan-to-value cap.
Equity and a possible borrowing amount are different quantities. The latter depends on a selected cap and real lender terms.

Worked scenario: keep equity and possible new debt separate

Assume an entered home value of $500,000, a primary mortgage balance of $260,000, and a second-lien balance of $40,000. Total liens are $300,000, so the model reports $200,000 of equity and a combined LTV of 60%. If you test an 80% cap, the cap balance is $400,000. Subtracting the $300,000 of existing liens produces a $100,000 modeled available amount.

The $100,000 is not the same thing as equity, and it is not an offer. It is the amount left under that particular cap after the balances you entered. Change the home value, cap, or second-lien balance and the scenario changes immediately. For a replacement-first-mortgage scenario that includes cash, use the Cash-Out Refinance Calculator.

A home-equity loan and a HELOC need different questions

This page can estimate a fixed payment for a selected amount, rate, and term. That resembles an installment loan scenario, which is useful when checking a home-equity loan against the household budget. The CFPB describes a home equity loan as a lump sum secured by home equity, often with a fixed rate.

A HELOC is different: it can permit repeated borrowing during a draw period, may have a variable rate, and can have a later repayment phase with different payments. The fixed-payment box here does not replicate that lifecycle. Keep the actual product disclosure next to any calculator scenario.

Test the value and payment sensitivity, not just the largest line

The page includes a simple value sensitivity so you can see how a small change in the entered value changes a cap-based scenario. That is not a forecast of the market. It is a way to avoid treating one estimate as immovable. A lower value and the same balances raise LTV and reduce the space under the selected cap.

Do the same with a borrowing payment: test a rate and term change, then add the resulting payment to the existing mortgage and other obligations in a household budget. Use the Loan Calculator to inspect the payment schedule for a separately defined fixed-rate loan, and use the Mortgage Payoff Calculator when the question is accelerating the existing mortgage instead of taking on new debt.

Record the assumptions before discussing a borrowing option

  1. Write down where the property-value figure came from and its date.
  2. Use current payoff or statement balances for every lien you include.
  3. Label the selected LTV cap as an assumption until a lender supplies its own terms.
  4. For any borrowing scenario, record the rate type, term, fees, payment change rules, and collateral risk.
  5. Run a household-budget check with the new payment before relying on the displayed amount.

Use the page's issue form if its math, wording, or source note appears wrong. Please do not submit addresses, account numbers, statements, or other sensitive information.

FAQ

Frequently Asked Questions

How does this calculator calculate home equity?
It subtracts the first-mortgage and second-lien balances you enter from the home value you enter. The result is an arithmetic snapshot; it is not an appraisal or a statement of available credit.
What is combined loan-to-value?
Combined LTV divides all lien balances included on the page by the entered home value. It helps show the relationship between total secured debt and value, but lenders may calculate or apply it differently.
Is the displayed available amount guaranteed?
No. It is a scenario at a cap you select. Actual availability can depend on appraisal, liens, product rules, income, credit, property condition, fees, and lender policy.
Does the payment estimate model a HELOC?
No. It is a fixed-rate, fully amortizing payment scenario. Many HELOCs have a draw period, variable rate, fees, and payment changes that this page does not simulate.
Why does a lower home value reduce the borrowing scenario?
At the same balance and selected cap, a lower value lowers the maximum total debt under that cap. That leaves less room after the existing liens are subtracted.
Can this calculator tell me whether to use home equity?
No. It cannot evaluate alternatives, affordability, eligibility, tax consequences, or the risk of securing debt with a home. It is an educational calculation only.

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