Mortgages: your equity, your repayments and your rate
Your equity is what your home is worth less what you owe. It comes from three places: your deposit, the loan you have repaid, and what the market has done. Enter your mortgage below to see each part, how every payment splits between interest and capital, and what a new rate would do when your deal ends.
CoreFi does not advise on or arrange mortgages. This page is arithmetic from the figures you enter, compared only with rates you choose. It names no lender or product and is not a recommendation to remortgage, switch or overpay.
Your equity now
£63,781
Worth £315,000, owing £251,219 · loan to value 80%
- Deposit £30,000
- Repaid £18,781
- Market +£15,000
Year 4 of 25
62% interest
This year's payments of £18,009: £11,165 interest, £6,844 off the loan. £180,224 of interest over the whole term.
25 years of payments. In the first year 67% is interest; in the last, 2%.
- Interest
- Off the loan
- Faded years are still to come
When your deal ends in 2 years
You would owe £237,216 over 20 years. Payment now £1,501 a month.
- At 4.25%, the rate you are testing
- £1,469 (−£32)
- At 7.00%, your lender's revert rate
- £1,839 (+£338)
At other rates, illustrative steps, not offers
- 3%£1,316
- 4%£1,437
- 5%£1,566
- 6%£1,699
- 7%£1,839
Your own estimate, or a recent valuation.
When your deal ends
Any rate you want to test. Not an offer.
The standard variable rate your deal moves to if you do nothing. Your offer states it.
A repayment mortgage at one rate you choose, held steady. Arithmetic, not a quote, advice or a recommendation. CoreFi does not advise on or arrange mortgages. Reviewed September 2026.
Worked example, illustrative only
A £300,000 home bought with a £30,000 deposit, on a 25-year repayment mortgage at 4.5%, pays £1,501 a month. After 3 years, worth £315,000, the equity is £63,781: £30,000 of deposit, £18,781 repaid and £15,000 from the market. If the deal ended 2 years later and the rate moved to 7%, the payment would be £1,839 a month. Illustrative only, not a quote or advice.
Go further
How it works
- Equity is the value less the debt. The deposit is equity from day one; every payment's capital part adds to it; the market adds or takes away the rest.
- Each payment is interest on what you owe first, then capital. Early on most of it is interest, so equity from repayments builds slowly at first and faster later.
- When a fixed or discounted deal ends, the payment is worked out again on what you then owe, over the years left, at the new rate. The same rate gives the same payment.
- Every figure uses one rate you choose, held steady. Real rates change, and your lender's figures are the ones that count.
Frequently asked questions
How much equity do I have in my house?
Take what your home is worth now and subtract what you still owe on the mortgage. This page splits the answer into your deposit, the loan you have repaid, and the change in the market since you bought, so you can see which of the three is doing the work.
What happens when my fixed rate ends?
Your mortgage usually moves to the lender's standard variable rate, which is often higher, unless you arrange a new deal. The payment is then recalculated on what you owe, over the years left, at the new rate. Enter any rate here to see the payment it would give.
Why is so much of my payment interest?
Interest is charged on what you owe, and early in a mortgage you owe the most. As the balance falls, less of each payment goes on interest and more on the loan, which is why the bars on this page shift from interest to capital over the years.
What is loan to value?
What you owe as a percentage of what the home is worth. It falls as you repay and as prices rise, and lenders use it to decide which rates they offer. This page shows yours on the figures you enter; it does not say what any lender would offer.
Does CoreFi arrange mortgages?
No. CoreFi does not advise on or arrange mortgages and does not introduce you to a lender or broker. This page is arithmetic for your own understanding. For advice, the Money Helper service lists how to find a regulated mortgage adviser.
See your own home and mortgage in one place
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This page illustrates arithmetic from the figures you enter. It is not advice, a recommendation or a quote. CoreFi does not advise on or arrange mortgages, and names no lender or product. Your home may be repossessed if you do not keep up repayments on your mortgage. CoreFi is a trading name of JG Core Ltd (company 16218779). Figures reviewed September 2026.