Quick start
- Open the Mortgage Calculator UK.
- Enter the property price and deposit in pounds.
- Enter the rate and repayment term, such as 5.2% for 25 years.
- Add a monthly fee only when the fee repeats every month.
- Calculate, then read monthly repayment, total monthly payment, loan amount, LTV, and total interest before comparing it with a lender illustration.
Best uses
Start here if one of these sounds like your job. The examples below show which inputs matter most.
- Estimate a UK repayment mortgage payment from property price, deposit, rate, and term.
- See loan amount and loan-to-value before comparing deposit sizes.
- Compare term length and interest-rate assumptions before a lender quote.
- Add a simple monthly fee when you want it included in the payment estimate.
What this calculator is for
The UK Mortgage Calculator estimates a capital-and-interest repayment mortgage. It subtracts the deposit from the property price, calculates the monthly repayment, and adds any monthly fees entered.
Use it before checking a UK mortgage quote, comparing deposit sizes, testing a 25-year versus 30-year term, or seeing whether a small monthly fee changes the payment enough to matter.
What to enter
UK mortgage estimates get messy when one-off costs and monthly costs are mixed together. Property price, deposit, rate, and term build the repayment estimate. The monthly fee field is only for a cost that repeats every month.
- Enter the property price and deposit in pounds.
- Enter the annual mortgage rate as a percent, such as 5.2 for 5.2%.
- Enter the repayment term in years, then add monthly fees only when the fee really repeats every month.
Example walkthrough
Try the calculator example: 25-year repayment: £300,000 property, £60,000 deposit, 5.2%, 25 years. The example result is About £1,431.12 per month, £240,000 loan, 80% LTV, and about £189,337.09 interest.
- A £300,000 property with a £60,000 deposit creates a £240,000 loan and 80% LTV.
- At 5.2% over 25 years, the repayment estimate is about £1,431.12 per month and about £189,337.09 total interest.
- If a £20 monthly fee is added to the higher-deposit example, the total monthly estimate becomes about £1,612.18.
Formula and steps
In plain language: The calculator subtracts the deposit from the property price, converts the annual rate to a monthly rate, applies the fixed repayment mortgage formula, then adds any monthly fees entered. Loan amount = property price - deposit. Monthly repayment uses the fixed-payment formula on the loan amount, monthly rate, and payment count. Total monthly payment then adds the monthly fee field.
If the estimate looks surprising, check the formula and inputs before using the answer in a budget, comparison, or planning note.
How to read the answer
Start with the headline result. Then read the supporting lines to see what made the number larger or smaller, such as rates, time periods, costs, taxes, fees, discounts, or contributions.
- Monthly repayment is the loan payment before the optional monthly fee field.
- Total monthly payment includes the optional monthly fee field, but not one-off product, legal, survey, or stamp duty costs.
- Loan-to-value shows the loan amount compared with property price, which is useful when comparing deposit scenarios and possible lender deals.
Common mistakes to avoid
Most bad finance estimates come from mixing rates, terms, monthly amounts, and annual amounts. The other common mistake is using a planning estimate as if it were a final quote.
- Do not use this as a lender affordability check or mortgage illustration.
- Do not forget stamp duty, arrangement fees, valuation fees, surveys, insurance, solicitor costs, leasehold costs, product rules, or rate-change risk.
- Do not use this for interest-only mortgages; it is for repayment payment math.
- Do not enter a deposit equal to or larger than the property price.
What to try next
A related tool can help when the UK mortgage payment is only one part of the home-buying question, such as deposit size, another country-specific mortgage style, or a plain loan comparison.
- Use Down Payment Calculator to compare deposit and LTV.
- Use Mortgage Calculator for the U.S.-style version.
- Use Canadian Mortgage Calculator if the loan follows Canadian payment conventions.
Sources and estimate notes
MoneyHelper explains mortgage repayments, repayment versus interest-only mortgages, and mortgage calculators. GOV.UK explains that lenders look at affordability, income, outgoings, deposit, credit, and possible rate changes, and that stamp duty and moving costs are separate from the mortgage payment.
This calculator still stays simple. It does not approve a mortgage, check affordability, include stamp duty, price product fees you do not enter, handle interest-only loans, read leasehold charges, or replace a written lender illustration.
Worked examples for Mortgage Calculator UK
About £1,431.12 per month, £240,000 loan, 80% LTV, and about £189,337.09 interest
About £1,612.18 total per month and 70.59% LTV
About £1,634.17 per month and about £94,150.04 interest
FAQ in plain language
When should I use the Mortgage Calculator UK?
Use it when you want to test the exact inputs on this page: Estimate a UK repayment mortgage payment from property price, deposit, rate, and term. See loan amount and loan-to-value before comparing deposit sizes. The result is a check against your assumptions, not proof that a lender, tax app, broker, platform, or provider will use the same number.
What do the main Mortgage Calculator UK inputs mean?
Property price means the price of the home before deposit, stamp duty, legal fees, surveys, insurance, or moving costs. Deposit means cash put toward the property price; the calculator subtracts it to get the mortgage loan amount. Interest rate means the annual rate used for the repayment estimate, entered as a percent such as 5.2 for 5.2%. Mortgage term means how many years the repayment is spread over. A longer term usually lowers the payment but raises total interest. Monthly fees means optional recurring fees you want included in the monthly total, not one-off product, legal, survey, or stamp duty costs.
Is this a UK repayment mortgage calculator?
Yes. It estimates a capital-and-interest repayment mortgage. Each monthly payment is treated as paying interest and reducing the loan balance. It is not an interest-only mortgage calculator.
Does this check if a UK lender will approve me?
No. UK lenders still look at income, outgoings, credit history, deposit, property details, and whether payments would stay affordable if rates changed. This page only checks the payment math.
Does this include stamp duty?
No. Stamp Duty Land Tax, Land and Buildings Transaction Tax, and Land Transaction Tax depend on location, buyer status, and property details. Use official calculators before treating the cash needed as final.
Why does loan-to-value matter?
Loan-to-value compares the mortgage loan with the property price. A £240,000 loan on a £300,000 property is 80% LTV. LTV can affect the deals a lender offers, but this calculator does not approve a deal.
What is the Mortgage Calculator UK doing with my numbers?
In plain language: The calculator subtracts the deposit from the property price, converts the annual rate to a monthly rate, applies the fixed repayment mortgage formula, then adds any monthly fees entered. Loan amount = property price - deposit. Monthly repayment uses the fixed-payment formula on the loan amount, monthly rate, and payment count. Total monthly payment then adds the monthly fee field.
Related tools
- Mortgage Calculator Estimate monthly principal, interest, taxes, insurance, PMI, and HOA costs.
- Canadian Mortgage Calculator Estimate a Canadian mortgage payment, loan amount, LTV, and total interest with semi-annual compounding.
- Down Payment Calculator Estimate down payment, loan amount, loan-to-value, closing costs, and cash needed.
Keep exploring
If this guide is close but not exact, these links keep you near the same kind of problem.
- Finance Browse the full category for related tools that help with the same job.
- All free tools Search the complete Access Free Tools library by task, category, or tool name.
- All tool and utility guides Find more plain-language examples, logic notes, mistakes, and result explanations.
- Free tool resources Start here when you are not sure which tool page fits.
Privacy and copying results
Recent answers stay visible only while you work in the current browser tab. They are not sent to a server.
Use Copy answer when you want to save the inputs and result in notes, homework, a message, or a project list. Check the units, labels, and limits before copying.