mortgage affordability calculator

Mortgage Affordability Calculator

Not sure what size mortgage fits your budget? Enter your details into our Mortgage Affordability Calculator to get an instant estimate of how much you could borrow based on your income and regular expenses. Simple, fast, and designed to help you plan with confidence.

Mortgage Calculator | Go Mortgage
Household Income
Include the combined annual salary of all applicants before tax or other deductions.
£
Deposit Amount
The upfront amount you can pay towards a property. Most lenders require at least 5% of the property value as a deposit.
£
Loan to value: 0%
Property Value
The price of the property you'd like to buy. If you're unsure of the exact value, a rough estimate is fine.
£
Max property value: £0
Mortgage Length
The period you'd like to repay your mortgage over. A longer term reduces monthly payments but increases total interest paid.
years
Interest Rate
The percentage charged by the lender on the amount borrowed. Rates vary based on credit score, LTV, and mortgage term.
%
Est. monthly repayments: £0

This calculator provides an estimate of your monthly mortgage repayments based on the information entered. The figures are for illustrative purposes only, your actual payments may differ, and this does not constitute a mortgage offer.

Potential Property Value

£0

Based on 4.5x your household income plus your deposit, you could potentially purchase a property of this value.

Mortgage Amount
£0

Based on your income, this is the amount lenders may be willing to let you borrow. Actual offers may vary.

How is this calculated?
Lenders typically offer 4-5 times your annual income. We've calculated this by taking your income of £0 and multiplying it by 4.5. Some lenders may offer more or less depending on your circumstances.
Monthly Repayment
£0

Your estimated monthly payment based on the interest rate and mortgage term you entered. Increase your deposit or term to lower this.

How is this calculated?
Monthly repayments are calculated using the standard mortgage amortisation formula, which accounts for both interest charges and principal reduction over the loan term.
Loan to Value
0%

LTV is the percentage of the property value you're borrowing. Lower LTVs are considered less risky and may secure better rates.

How is this calculated?
LTV is calculated by dividing the loan amount by the property value and multiplying by 100. For example, borrowing £90k on a £100k property gives an LTV of 90%. Increase your deposit to lower your LTV.

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Speak to one of our expert mortgage advisors today.

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How It Works

Three simple steps to secure your mortgage – backed by expert advice and a smart, supportive process from start to finish.

Tell Us a Little Bit About You

A quick, painless 60-second form captures your current situation.

Simple mortgage application form for first-time buyers and complex cases

We Find the Perfect Match

Partnering with over 100 leading lenders, including exclusive specialist options

Comparing specialist mortgage options from multiple UK lenders

Your Personal Mortgage Team

You’ll be assigned a dedicated team of experts who handle every step. 

Dedicated mortgage advisor providing personalised specialist mortgage advice

Got Questions?

Our FAQs are here to give you clear, straightforward guidance so you can understand your options with confidence. Whether you’re checking what you can afford, exploring repayments, or comparing mortgage deals, you’ll find the essentials covered here.

What factors influence how much I can borrow on a mortgage?

Lenders typically assess your income, regular outgoings, credit history, employment stability, and the size of your deposit. Each lender weighs these differently, which is why borrowing amounts can vary. GoMortgage helps you compare across lenders to find what’s realistic for you. Use our mortgage affordability calculator above.

Not necessarily. Many lenders accept part-time workers, self-employed applicants, contractors, and freelancers. What matters most is demonstrating consistent and reliable income. Your GoMortgage adviser can help identify lenders who fit your situation.

Yes, your existing commitments – such as loans, credit cards, car finance, or childcare costs – can reduce your borrowing power. However, this doesn’t mean you won’t qualify for a mortgage. It simply means lenders will factor these into your affordability assessment.

Yes. A longer mortgage term can lower your monthly payments, which may increase how much lenders are willing to offer. A shorter term usually means higher payments and, therefore a lower borrowing amount. Your adviser can show you how different terms affect affordability.

A larger deposit can strengthen your application and sometimes allow access to lenders who offer higher income multiples. It may also reduce your monthly payments. While it’s not the only factor, it can improve your overall affordability profile.

Income multiples (like 4x or 4.5x your income) are a rough guide, but lenders rarely rely on them alone. Affordability is now based more on your full financial picture. That’s why the number you see online may differ from what a lender actually offers- and why personalised advice from GoMortgage makes a big difference.