Home Equity Calculator

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Find your home equity, LTV ratio, and how much you can borrow via a HELOC or home equity loan. Formula and benchmarks explained.

Quick answer: Home equity = current market value minus your outstanding mortgage balance. A home worth $450,000 with a $280,000 mortgage has $170,000 in equity (37.8%). Most lenders cap combined borrowing at 80% of value, so in this example you could borrow up to $80,000 through a HELOC or home equity loan.

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Borrowing Capacity

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Optional. Defaults to the common 80% lender cap if left blank
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Optional. 0 if unknown or not applicable
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Home Equity

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Equity %0%
LTV Ratio0%
Appreciation Gain$0
Max Borrowing (HELOC)$0
Combined LTV at Max0%
Est. Monthly Payment$0/mo
Total Interest Paid$0

📐 Home Equity Formula

Equity = Home Value − (Mortgage Balance + Second Mortgage)
LTV = (Mortgage Balance / Home Value) × 100
Max Borrowing = (Home Value × Max CLTV%) − Existing Mortgage(s)
Est. Monthly Payment = Max Borrowing × [r(1+r)ⁿ] ÷ [(1+r)ⁿ − 1], where r is the monthly rate and n is the term in months
Appreciation Gain = Current Value − Original Purchase Price

How to Use the Home Equity Calculator

1

Enter your home value and mortgage balance

Input your home's current market value and what you still owe on your mortgage (plus any second mortgage or existing HELOC balance).

2

Set your borrowing assumptions

Adjust the max combined LTV your lender allows (typically 80–85%), and optionally enter your original purchase price to see appreciation gain.

3

Enter a rate and term to estimate payment

Input a HELOC or home equity loan interest rate and repayment term to see an estimated monthly payment and total interest on the amount available to borrow.

4

Review your equity, LTV, and borrowing capacity

The calculator shows your current equity, LTV ratio, and how much you can borrow, with a color-coded alert showing which LTV bracket you're in.

What Is Home Equity and Why Does It Matter?

Home equity is the portion of your home's value that you own outright, the difference between what your home is worth and what you still owe on your mortgage. It's one of the most powerful wealth-building tools available to homeowners, growing both as you pay down your loan and as property values appreciate.

How to Use Home Equity

There are three main ways to access home equity: a Home Equity Loan (a lump-sum loan at a fixed rate), a HELOC (Home Equity Line of Credit, a revolving credit line at a variable rate), or a cash-out refinance (replacing your existing mortgage with a larger one). HELOCs are flexible and popular for renovation projects; home equity loans suit one-time large expenses.

LTV Ratios and What They Mean for You

Your Loan-to-Value ratio determines your borrowing options. The calculator above shows your current LTV and flags which bracket you're in.

LTV RangeWhat It Means
Below 80%No PMI required; access to the best mortgage and HELOC rates
80–85%Most lenders require PMI if it's your primary mortgage; HELOC borrowing may be limited
85–90%Fewer lenders offer financing; higher rates
Above 90%Very limited options; significantly higher rates

In South Africa, home equity is typically accessed by applying to your bank for a further advance on your existing bond, or by registering a second bond. SA banks generally allow access up to 100% of the property's current value minus the outstanding bond balance, subject to affordability assessment. The SA residential property market also offers strong long-term equity growth in key metros; if you're evaluating property investment or tracking equity across a South African portfolio, SA Property Tools provides bond repayment, rental yield, and property investment calculators built for the South African market.

How to Calculate Home Equity and Borrowing Capacity by Hand: Worked Example

Take a home currently worth $450,000 with a remaining mortgage balance of $280,000.

Equity = current value − mortgage balance = $450,000 − $280,000 = $170,000.

Current loan-to-value (LTV) = balance ÷ value = $280,000 ÷ $450,000 = 62.2%.

Most lenders cap combined borrowing (existing mortgage plus any new home equity loan or HELOC) at 80% of value: $450,000 × 0.80 = $360,000 maximum combined debt. Available to borrow = $360,000 − $280,000 = $80,000, well under the full $170,000 of equity, because lenders always require an equity cushion rather than lending against 100% of the home's value.

Why do lenders cap borrowing below 100% of equity?

The 20% cushion protects the lender if home values fall and protects the borrower from becoming instantly underwater on a home equity loan the moment values dip slightly. Borrowers with excellent credit occasionally see limits up to 85–90% combined LTV; borrowers with weaker credit or in less stable markets may see stricter caps, sometimes 70–75%.

Home Equity Loan or HELOC: Which Fits Your Situation?

What is the practical difference between the two products?

A home equity loan disburses a lump sum at a fixed rate with fixed payments, suited to a single known expense like a renovation with a fixed contract price. A HELOC (home equity line of credit) works like a credit card secured by the home: draw as needed during a draw period, often at a variable rate, then repay during a separate repayment period. HELOCs suit ongoing or uncertain costs (a multi-phase renovation, an emergency reserve); loans suit one-time, known costs.

What can the available $80,000 realistically fund?

Common uses include debt consolidation (converting high-rate credit card debt to a lower home-equity rate), home improvements that may also raise the home's value, or funding a large one-time expense in place of a higher-rate personal loan. Our new kitchen renovation cost calculator or bathroom renovation cost calculator can estimate a realistic project budget to compare against the amount available to borrow before applying. Because the home secures the debt, missed payments carry foreclosure risk that unsecured debt does not, a meaningfully higher stake than the interest-rate savings alone might suggest.

How does falling home value change the picture?

If this home's value fell to $400,000 while the balance stayed at $280,000, the 80% cap becomes $320,000, cutting the amount available to borrow to $40,000 (half of the original $80,000 figure) even though nothing changed about the mortgage itself, and actual equity is still $120,000 ($400,000 − $280,000). Home equity borrowing capacity is not a fixed number; it moves with the local market and should be re-checked before relying on a specific amount for a planned expense.

⚠️ Disclaimer Home equity, LTV, and maximum borrowing figures are estimates based on the values you enter. Actual borrowing limits depend on your lender's underwriting criteria, credit score, debt-to-income ratio, and a professional appraisal of your home's current value; confirm exact figures with your lender before applying.

Frequently Asked Questions

Home equity = Current Market Value − Outstanding Mortgage Balance. If your home is worth $450,000 and you owe $280,000, your equity is $170,000 (37.8%). Equity grows as you pay down your mortgage and as property values increase.
Most lenders allow you to borrow up to 80–85% of your home's value combined (existing mortgage + new loan). With an 80% CLTV limit: if your home is worth $450,000, your max combined borrowing is $360,000. Subtract your mortgage balance ($280,000) and you can borrow up to $80,000 via a HELOC or home equity loan.
LTV below 80% is considered good: it means you have at least 20% equity, avoids PMI on conventional loans, and qualifies you for the best interest rates. LTV of 80–90% is acceptable but may carry PMI or higher rates. Above 90% LTV limits your options. Well under 60% LTV, some lenders offer additional pricing tiers on top of the standard best-rate terms.
Make extra mortgage payments (even $100–$200/month extra accelerates paydown significantly), make a larger down payment upfront, choose a 15-year over a 30-year mortgage, complete value-adding renovations (a minor kitchen refresh or a midrange bathroom remodel can return 80–113% of cost, while a full kitchen gut or an upscale bathroom often returns only 35–51%), and benefit from general market appreciation. Equity = current market value minus remaining mortgage balance.
A Home Equity Line of Credit (HELOC) lets you borrow against your home equity at a variable rate. Most lenders allow borrowing up to 80–85% combined loan-to-value (CLTV). Draw period: 5–10 years (borrow and repay like a credit card). Repayment period: 10–20 years (pay principal + interest). HELOCs typically have variable rates tied to the prime rate.
Use this calculator's rate and term fields to estimate it: on the $80,000 example above at a 7.5% rate over a 10-year term, the payment is approximately $950/month, with about $34,000 in total interest over the full term. National average rates as of September 2026 run roughly 7.1–7.3% for HELOCs and 7.4–8.1% for fixed-rate home equity loans, per Curinos and Bankrate; a shorter term lowers total interest but raises the monthly payment.
It is a reasonable starting point, not a final number a court or settlement will accept. This calculator uses the home value you enter, but a divorce settlement typically requires a licensed appraisal for the home's actual current value, and equity is not always split 50/50: state law (community property vs. equitable distribution), other marital assets, and any buyout arrangement all affect the final division. Use this tool to understand the rough numbers before involving an appraiser and a family law attorney.

Sources & Methodology

Calculations are based on the most current publicly available data from authoritative government and industry sources: