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UK Mortgage Calculator

Use this UK mortgage calculator to compare payment, payoff, or borrowing scenarios for UK mortgage.

Primary answer
Estimated total monthly payment
Inputs to verify
Mortgage type, Property price, and Deposit
Use type
Use as a review-only estimate; verify before relying on it.
Keyword intent
UK mortgage calculator

Calculator

UK Mortgage Calculator

Calculates estimated total monthly payment from mortgage type, property price, deposit. Defaults are filled in so you can review a working example before changing inputs.

Repayment pays down the balance over the term; interest-only leaves the principal due at the end.

GBP

Purchase price or property value before the deposit.

GBP

Cash deposit that reduces the mortgage amount.

%

Use 5.25 for 5.25%. This calculator divides the annual nominal rate by 12.

years

Whole number of years for the mortgage term.

GBP/month

User-entered recurring monthly mortgage or account fees; taxes are not included.

Result

Result reflects the current submitted inputs.

  • Risk C
  • Reviewed 2026-05-26
  • 4 sources
Estimated total monthly payment1,438.19 GBP
Monthly mortgage payment1,438.19 GBP
Mortgage amount240,000 GBP
Total interest over term191,458.35 GBP
Principal remaining at term end0 GBP
Total cost including principal431,458.35 GBP
Loan-to-value ratio80%
Monthly periodic rate0.4375%

Breakdown

Mortgage type
Repayment
Monthly periodic rate
0.4375%
Number of payments
300
  • The mortgage is fixed-rate and paid monthly at the end of each period.
  • The annual interest rate input is a nominal annual percentage; 5.25 means 5.25%, not 0.0525.
  • Repayment mortgages fully amortize to zero over the selected term.
  • Interest-only mortgages do not reduce principal; the mortgage amount remains due at the end of the term.
  • Monthly fees are user-entered estimates and are not looked up from lender data.
  • Stamp Duty Land Tax, Scottish LBTT, Welsh LTT, insurance, affordability checks, lender fees, rate changes, early repayment charges, and legal advice are excluded.
  • This is an educational estimate, not financial advice, a lender quote, or a regulated mortgage recommendation.

Accuracy notes

Risk level
C
Reviewed
2026-05-26
Sources
4
Primary result
Estimated total monthly payment

Formula logic is kept in a pure calculator module with fixtures, source notes, and page-visible assumptions.

High-risk estimate

Educational estimate, not advice

This finance calculator is for educational estimates only. It is not financial advice, a lender quote, investment advice, tax advice, legal advice, or a substitute for reviewing actual contracts, disclosures, rates, fees, and local rules.

Check the reviewed sources, assumptions, and formula limits before using this result for a financial, health, or safety decision.

Review cadence: 12 months; next review due 2027-05-26.

Categories

What the result means

Use Estimated total monthly payment as the headline answer for UK mortgage. Mortgage payment plus user-entered monthly fees. Read the payment or payoff number first, then compare interest, balance, and timing outputs before changing a loan decision. Use monthly mortgage payment, mortgage amount, and total interest over term to explain why estimated total monthly payment moved when an input changed. Run at least one conservative and one optimistic scenario before comparing with a real quote or statement.

Estimated total monthly paymentMortgage payment plus user-entered monthly fees.
Monthly mortgage paymentRepayment mortgage payment or interest-only monthly interest.
Mortgage amountProperty price minus deposit.
Total interest over termInterest paid over the selected mortgage term.

Use the result this way

  1. Start with Estimated total monthly payment, then use supporting outputs only to explain the primary answer.
  2. Verify mortgage type, property price, and deposit before copying the result.
  3. Choose the mode or method first because it can change which formula is applied, keep units consistent with the labels shown in the form, and stay within the documented minimum and maximum ranges.
  4. Run at least one conservative and one optimistic scenario before comparing with a real quote or statement.

User job

How to use this calculator

Use UK Mortgage Calculator when you need estimated total monthly payment, then use monthly mortgage payment and mortgage amount to check the context for planning conversations, quote comparisons, payment checks, and scenario review.

Best for

  • Comparing one financial scenario with another
  • Preparing questions for a lender, advisor, or statement review
  • Reviewing a default example before entering your own mortgage type and property price.

Check before relying

  • Verify rates, fees, timing, taxes, and local rules against official documents before acting.
  • The mortgage is fixed-rate and paid monthly at the end of each period.
  • The annual interest rate input is a nominal annual percentage; 5.25 means 5.25%, not 0.0525.
  • Source context: GOV.UK / Money and Pensions Service, reviewed 2026-05-26.

Next useful step

  • Mortgage CalculatorUse next when the borrowing comparison needs mortgage inputs such as home price and down payment.
  • Auto Loan CalculatorUse next when the borrowing task needs monthly payment instead of estimated total monthly payment.
  • Boat Loan CalculatorUse next when the borrowing task needs monthly payment instead of estimated total monthly payment.

Limits of this estimate

  • Supports educational UK mortgage payment math only; it excludes lender illustrations, affordability checks, SDLT/LBTT/LTT, insurance, legal advice, early repayment charges, and regulated recommendations.
  • The result depends on user-entered inputs and the documented assumptions; defaults are examples only.
  • Search indexing approval does not downgrade this page from risk level C or turn the result into professional advice.

Formula

Repayment mortgages use the standard fixed-rate amortized payment formula. Interest-only mortgages use loan amount multiplied by the monthly periodic rate. Total monthly payment adds user-entered monthly fees. Key assumptions: The mortgage is fixed-rate and paid monthly at the end of each period. The annual interest rate input is a nominal annual percentage; 5.25 means 5.25%, not 0.0525. Repayment mortgages fully amortize to zero over the selected term.

  • Repayment mortgages use the standard fixed-rate amortized payment formula. Interest-only mortgages use loan amount multiplied by the monthly periodic rate. Total monthly payment adds user-entered monthly fees.
  • The mortgage is fixed-rate and paid monthly at the end of each period.
  • The annual interest rate input is a nominal annual percentage; 5.25 means 5.25%, not 0.0525.
  • Primary source context: GOV.UK / Money and Pensions Service.

Inputs

Enter mortgage type, property price, deposit, and annual interest rate for planning conversations, scenario checks, and lender or statement comparison. Before calculating, choose the mode or method first because it can change which formula is applied, keep units consistent with the labels shown in the form, and stay within the documented minimum and maximum ranges. Mortgage type: Repayment pays down the balance over the term; interest-only leaves the principal due at the end. Property price: Purchase price or property value before the deposit. Deposit: Cash deposit that reduces the mortgage amount. Annual interest rate: Use 5.25 for 5.25%.

Mortgage typeRepayment pays down the balance over the term; interest-only leaves the principal due at the end.
Property pricePurchase price or property value before the deposit.
DepositCash deposit that reduces the mortgage amount.
Annual interest rateUse 5.25 for 5.25%. This calculator divides the annual nominal rate by 12.
Mortgage termWhole number of years for the mortgage term.
Monthly feesUser-entered recurring monthly mortgage or account fees; taxes are not included.

Example

Using the default inputs, UK Mortgage Calculator returns estimated total monthly payment of 1,438.19 GBP. Adjust mortgage type, property price, deposit, and annual interest rate to match your own scenario.

FAQ

How is estimated total monthly payment calculated here?

Repayment mortgages use the standard fixed-rate amortized payment formula. Interest-only mortgages use loan amount multiplied by the monthly periodic rate. Total monthly payment adds user-entered monthly fees. The first assumption to check is: The mortgage is fixed-rate and paid monthly at the end of each period.

What does Estimated total monthly payment mean for UK mortgage?

Read the payment or payoff number first, then compare interest, balance, and timing outputs before changing a loan decision. Secondary values such as monthly mortgage payment, mortgage amount, and total interest over term are there to explain the primary answer, not to replace it.

What should I enter for Mortgage type?

Repayment pays down the balance over the term; interest-only leaves the principal due at the end. Choose the mode or method first because it can change which formula is applied, keep units consistent with the labels shown in the form, and stay within the documented minimum and maximum ranges.

How does Property price change estimated total monthly payment?

Purchase price or property value before the deposit. Changing it can alter estimated total monthly payment because the formula uses the submitted inputs together. Also compare APR period, compounding, fees, payment timing, taxes, insurance, and extra-payment assumptions.

Why does the UK mortgage example show 1,438.19 GBP for estimated total monthly payment?

The default inputs produce 1,438.19 GBP for estimated total monthly payment. Treat that as a format and scale check, then replace every default value with your own inputs.

What should I compare before using the UK mortgage payment result?

Compare the rate period, payment timing, fees, taxes, escrow items, payoff assumptions, and the actual quote or statement that governs the decision.

Sources

Last reviewed: 2026-05-26

  • officialReviewed 2026-05-26 · Source Undated page, accessed 2026-05-26
    SourceGOV.UK / Money and Pensions Service. Locale-specific UK mortgage calculator framing and disclosure expectations.
    Scope
    UK mortgage repayment calculator transparency record and supported mortgage-payment context.
    Supports
    Locale-specific UK mortgage calculator framing and disclosure expectations.
    Limits
    Does not replace lender illustrations, underwriting, affordability checks, or advice.
  • reputableReviewed 2026-05-26 · Source Undated page, accessed 2026-05-26
    SourceMoneyHelper. User-facing distinction between repayment and interest-only mortgage estimates.
    Scope
    UK consumer mortgage calculator context for repayment and interest-only mortgage estimates.
    Supports
    User-facing distinction between repayment and interest-only mortgage estimates.
    Limits
    Calculator behavior is used as contextual support, not as a sole formula oracle.
  • officialReviewed 2026-05-26 · Source Undated page, accessed 2026-05-26
    SourceGOV.UK / HM Revenue & Customs. Blocked-scope rationale for not calculating UK property taxes without versioned official data.
    Scope
    Official SDLT residential property rates.
    Supports
    Blocked-scope rationale for not calculating UK property taxes without versioned official data.
    Limits
    Not implemented in this packet.
  • reputableReviewed 2026-05-26 · Source Undated page, accessed 2026-05-26
    SourceMicrosoft Support. Repayment mortgage monthly payment formula.
    Scope
    Standard fixed-payment annuity formula.
    Supports
    Repayment mortgage monthly payment formula.
    Limits
    Does not model UK tax, lender fees, product changes, or regulated advice.

Disclaimer

This finance calculator is for educational estimates only. It is not financial advice, a lender quote, investment advice, tax advice, legal advice, or a substitute for reviewing actual contracts, disclosures, rates, fees, and local rules.