Home Equity Calculator
Home equity is your property’s estimated market value minus the total amount you owe against it. Everything else on this page, LTV, borrowing capacity, future projections, is built on that one subtraction.
Most equity calculators stop at that number. This one keeps going: what you could realistically access, what a lender would actually decide, how a price fall would hit you, and which borrowing routes exist in your country.
- No sign-up
- No personal details
- Nothing stored or sent
- Runs in your browser
Quick estimate: two figures, one answer
Enter what the property would realistically sell for today and what you still owe on the mortgage. That’s enough for your equity, your equity percentage and your loan-to-value.
Your own estimate. A typed currency sign or commas are fine.
The amount outstanding today, not the original loan.
Advanced planning Borrowing capacity, 1 to 15 year projections, price-fall stress test, overpayments, shared ownership, investment property.
What are you exploring?
This only changes what gets emphasised below and adds a short note. It never recommends a product.
Your fuller picture
All optional, but each one unlocks a section below. Interest rate and remaining term are what make the projections work.
Second charges, further advances, secured loans. Not credit cards.
Illustrative default, not a forecast. Negative values are allowed.
Held flat for the whole projection. Real rates change at each deal or renewal.
Years left to run. Decimals are fine, for example 22.5.
Leave blank and the tool calculates it from your balance, rate and term.
On top of your normal payment, straight off the principal.
Treated as paid today. Check your lender’s overpayment limits and charges.
Projections hold additional secured loans flat and assume the interest rate you entered runs for the whole period. Neither is true forever, so treat the shape of the curve as the useful part, not the exact figure.
How much could I potentially access?
Lenders cap borrowing at a maximum loan-to-value. Pick the LTV you want to test against, and the maths shows the headroom between that ceiling and what you already owe.
1 · Total equity
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What you’d have if you sold today, before selling costs, fees, early repayment charges and taxes.
2 · Potentially accessible
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An assumption based on the maximum LTV you chose, not an offer from anyone.
3 · Lender-approved
Unknown here
Depends on affordability, credit, valuation, and the lender’s own rules, and this tool cannot know any of that.
Equity today vs equity tomorrow: how much equity will I have after 5 years or 10 years?
Two things move at once. The property value drifts with the market, and the mortgage balance falls as you repay. Equity is the gap between them.
Time horizon
Growth scenario
Presets write into the growth field above. Type any rate you like. None of these are forecasts.
- Property value (solid)
- Mortgage balance (dashed)
- Equity gap (marked line)
Show the year-by-year figures as a table
| Year | Property value | Mortgage balance | Equity | LTV |
|---|
What if house prices change?
Your debt doesn’t move when prices do. That asymmetry is the whole story: a 10% fall in value takes far more than 10% of your equity.
| Price change | New property value | Resulting equity | Resulting LTV | Change in equity |
|---|
How does overpaying change my equity?
Overpayments are the one lever here you fully control. Market growth is a guess; principal repayment is arithmetic.
| Measure | Without overpayments | With your overpayments | Difference |
|---|
Want to model overpayment strategy properly, including lender caps and early repayment charges? Use the CalcNest Mortgage Overpayment Calculator. For a plain walkthrough of the maths behind it, see this guide to calculating mortgage overpayments and what they save you.
Investment property mode
Same equity maths, different question. Here the monthly cash flow matters as much as the equity position.
Management, insurance, maintenance, service charges, void allowance.
- Equity
- —
Property value minus the mortgage balance.
- LTV
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Loan to value on this property.
- Gross rental income
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Before any costs.
- Estimated monthly cash flow
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Rent minus mortgage payment minus expenses.
No tax is calculated anywhere in this tool. Tax treatment of rental income, mortgage interest and gains varies by country and by individual circumstances, and it can change the real picture substantially.
Your equity decision report
Everything above, pulled into one place.
- Estimated home equity
- —
Property value minus all secured debt.
- Equity percentage
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The share of the property that isn’t borrowed against.
- Current LTV
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Secured debt as a percentage of value.
- Potentially accessible
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Headroom to your chosen maximum LTV.
- Estimated future equity
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Needs your rate and remaining term.
- Stress test at −10%
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Equity left if the value fell 10%.
Your CalcNest Equity Snapshot
Your next planning questions
Equity pathways compared
A comparison, not a recommendation engine. Availability, names, rules and costs vary by country and by lender, and nothing here is an offer or advice.
How Does a Home Equity Calculator Work?
A home equity calculator does one subtraction and then does something useful with the result. It takes the estimated market value of your property, subtracts every debt secured against that property, and shows what’s left. That remainder is your equity: the portion of the asset that is yours rather than the lender’s.
The reason a home equity estimator feels more complicated than that is everything built on top. Once it knows your value and your debt, it can express the same position as a percentage, flip it into loan-to-value, project it forward as your balance falls, and test what happens if the value moves. This tool does all of that in your browser, with no account, no sign-up and no data collection. If you searched for an equity calculator without personal details, this page is a direct answer to that: nothing you type is transmitted, stored or logged anywhere.
How to Calculate Home Equity
Three formulas cover almost everything:
- Home equity = property value − total secured debt
- Equity percentage = (home equity ÷ property value) × 100
- LTV = (total secured debt ÷ property value) × 100
Total secured debt is the part people get wrong. It isn’t just the main mortgage. Second charges, further advances, homeowner loans and any other borrowing registered against the property all count, because all of them get repaid from the sale proceeds before you see a penny. If you only subtract the first mortgage, your equity number is too flattering.
Note what isn’t in the formula: selling costs, agent fees, legal fees, early repayment charges and any tax. Equity as calculated here is gross. What actually lands in your account after a sale is lower, sometimes by several percent of the property value.
How Much Equity Do I Have in My Home?
Enter your two figures at the top of this page and you’ll have the answer in a second. The harder part is the property value, because it’s an estimate and yours may be optimistic. A useful discipline: run the number once with the figure you believe, then run it again 5% or 10% lower using the stress test. If both answers still work for what you’re planning, your plan is robust. If only the optimistic one works, you’re relying on the valuation going your way.
Lenders don’t take your word for the value either. They’ll instruct a valuation or an automated valuation model, and the figure they use is the one that decides your LTV band, not yours. This is the single most common reason a home value calculator result and a lender’s decision disagree.
How Is Home Equity Different From LTV?
They’re two views of the same split. Equity is the part you own, expressed in money or as a percentage. LTV is the part you owe, expressed as a percentage of value. On a property with no other secured borrowing, equity percentage and LTV add up to 100%.
The reason both exist is that they’re used by different people for different jobs. You care about equity because it’s your money. Lenders care about LTV because it’s their risk, and they price in bands: crossing from just above a band to just below it can change the rate you’re offered. That’s why moving from 81% to 79% LTV can matter more than moving from 70% to 68%.
This tool labels LTV as Lower, Moderate or Higher rather than good or bad, because the right LTV depends entirely on what you’re trying to do. A higher LTV is not a moral failing, it’s a pricing input.
How Much of My Equity Could I Potentially Access?
Start with the ceiling. Lenders lend up to a maximum LTV, so the arithmetic is: (property value × maximum LTV) − existing secured debt. Whatever that leaves is the theoretical headroom. That’s what the equity home loan calculator in Section 3 works out for you, at whichever LTV you want to test.
Then apply the reality filters, because the headroom figure is a ceiling, not an outcome. Affordability assessment on your income and outgoings, credit history, the lender’s valuation rather than yours, the product’s own maximum loan size, your age at the end of the term, and the purpose of the borrowing can all reduce it, sometimes to zero. A person with substantial equity and thin income can be turned down while someone with less equity and stronger income is approved.
Keep the three numbers separate in your head: total equity, potentially accessible equity, and what a lender would actually approve. Competitor calculators tend to blur the first into the third, which is how people end up disappointed at application stage.
How Does Home Equity Change Over Time?
Equity moves for two independent reasons, and it helps to keep them apart.
Repayment is the reliable one. On a repayment mortgage, every monthly payment shifts a slice of the balance into equity, and that slice grows each year as the interest portion shrinks. Nothing has to happen in the market for this to work. Price movement is the volatile one: it can add far more than repayment in a good few years, and take it away just as fast.
How much equity will I have after 5 years? Use the 5-year setting in Section 4. It compounds your assumed growth rate onto the property value, amortises your mortgage month by month at the rate and term you entered, and shows the gap between them at year five, including any overpayments you’ve added.
And after 10 years? Switch to the 10-year setting. Over that length of time, repayment usually becomes the larger contributor for a typical repayment mortgage, because the principal portion of each payment has grown substantially by then. Try the flat 0% growth preset to see how much equity you’d build with no help from the market at all. For many people this is the most reassuring number on the page.
What Happens to My Equity If House Prices Fall?
Your debt is fixed and your equity is the buffer, so a fall in value comes out of your equity first, pound for pound or dollar for dollar. On a property at 80% LTV, a 10% fall in value removes half of your equity, because your equity was only 20% of the value to begin with. That leverage effect surprises people every cycle.
If a fall pushes the secured debt above the property value, that’s negative equity. The practical consequences: selling would leave a shortfall you’d still owe, remortgaging to a new lender is usually off the table, and you’d typically be moved onto your existing lender’s standard rate at the end of your deal rather than being able to shop around. It isn’t an immediate crisis if you can keep paying and don’t need to move, but it removes most of your options. Section 5 shows this outcome plainly rather than hiding it.
Home Equity Loan vs HELOC: What’s the Difference?
A home equity loan is a lump sum at a fixed rate, repaid over a set term. Predictable, boring in the good way. A HELOC is a revolving credit line: you draw what you need during a draw period, and payments during that period are often interest-only or otherwise low. When the draw period ends, the repayment period begins, principal gets added to the payment, and the payment usually jumps hard. That jump is the single most common HELOC surprise, and it’s exactly what the estimator below quantifies.
Home equity loan and HELOC payment estimator
Same amount, both structures, side by side. Enter one amount and see what each route actually costs per month, including the payment after the HELOC draw period ends.
Used for both routes so the comparison is like for like.
Home equity loan
- Monthly payment, whole term
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Fixed structure: the same payment from day one to the end.
HELOC
- Draw period, interest only
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- Repayment period
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Low now, because you’re paying no principal at all.
Principal plus interest on whatever is still outstanding.
| Measure | Home equity loan | HELOC |
|---|
Which structure suits you depends on the shape of the spending. A single known cost, a kitchen, a car, a fixed debt balance, fits a lump sum. Spending that arrives in unpredictable stages, like a long renovation, fits a line of credit. But a HELOC only stays cheap while you’re in the draw period and disciplined about the balance. If you reach the end of the draw period still owing most of the limit, you inherit a substantially larger payment at exactly the moment you have nothing left to draw.
Can I Use Home Equity to Consolidate Debt?
Often yes, and the appeal is obvious: secured rates are usually lower than credit card or personal loan rates, and one payment is simpler than five. But the trade is real and it isn’t only about the rate.
Securing borrowing against your home to repay unsecured debt changes the risk attached to that debt. Your home could be at risk if you cannot keep up repayments. Compare the total cost and repayment period carefully before deciding.
The arithmetic trap is the term. Moving a five-year debt onto a twenty-year secured loan cuts the monthly payment and can still increase the total interest paid substantially, even at a much lower rate. Work out the total cost over the full term of each option, not just the monthly figure, and check the consolidated debt genuinely closes rather than quietly rebuilding on the cards you just cleared.
Can I Use Home Equity to Refinance or Remortgage?
Yes, and equity is what makes the refinance possible in the first place. Your LTV at the point of application decides which products you qualify for and what rate you’re offered. Having built equity since you bought, whether through repayment, price growth or both, is often the main reason a refinance or remortgage improves your position.
You can usually also borrow more than you currently owe and take the difference as cash: called a cash-out refinance in the US and capital raising on a remortgage in the UK. It moves your entire balance onto the new rate, which is excellent if rates have fallen since you fixed and painful if they’ve risen. When your current deal is one you don’t want to give up, a second-charge loan or further advance keeps it intact and prices only the new money. Compare both routes on total cost, not just headline rate, and watch for early repayment charges.
Run the numbers with the CalcNest Mortgage Calculator and check what you could support with the CalcNest Mortgage Affordability Calculator.
Home Equity and Shared Ownership
Shared ownership breaks the standard formula, because the full market value is not your asset. You own a percentage share, you hold a mortgage against that share, and you usually pay rent to the housing provider on the part you don’t own. Your equity is the value of your share minus the mortgage on your share. Nothing else.
Buying more of your home later is called staircasing, and it’s priced at the market value at the time you buy, not the value when you moved in. If prices have risen, the extra share costs more. Rent on the remaining unowned portion typically falls as your share grows, but valuation fees, legal costs and mortgage arrangement costs apply each time. Section 10 above models all of this at today’s value. Never combine the rent with your equity: one is a cost, the other is an asset.
Home Equity for Investment Properties
The equity calculation is identical, but it answers a different question. On a home you live in, equity is mostly about optionality: moving, borrowing, downsizing. On an investment property it’s a working capital position, usually judged alongside monthly cash flow and yield.
Lenders also treat the two differently. Maximum LTVs on investment or buy-to-let lending are typically lower than on residential, and assessment often leans on rental coverage rather than only personal income. Section 11 shows equity, LTV, gross rent and estimated monthly cash flow together. It deliberately calculates no tax, because tax treatment of rental income, interest and gains varies by country and by individual circumstances.
Home Equity vs Equity Release: Can I Access It Before 55?
Home equity is what you own. Equity release is one specific product family for turning some of it into cash later in life, and the two are not interchangeable.
Equity release and reverse mortgages are distinct, later-life products with their own age rules and long-term cost structure. They are not simply another way to borrow the same amount at the same cost as a standard loan. Interest typically rolls up rather than being paid monthly, so the balance compounds and can grow substantially over a long retirement, reducing what’s left in the estate. That may be a perfectly reasonable trade for someone who needs income and has no other route, but it needs to be understood as a different kind of decision, taken with regulated advice.
How Accurate Is a Home Equity Calculator?
The arithmetic is exact. The inputs are not, and that’s where all the error lives.
Your property value is an estimate until someone with money on the line values it. Your mortgage balance is precise today and slightly stale tomorrow. Projections assume a fixed interest rate for the whole period, which almost never happens across a deal or renewal cycle, and they assume a smooth growth rate, whereas real prices move in jumps and stalls. Any home equity assessment tool, this one included, is a structured way to think about a range, not a promise of a figure.
Use it to answer questions of shape: is the plan robust to a 10% fall, does the payment jump after a draw period break me, does overpaying meaningfully change the picture. Those answers survive the input uncertainty. A single number to the nearest pound does not.
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