Your Free Monthly Mortgage and Repayment Calculator
Take Control of Your Mortgage: Plan and Pay It Off Sooner!
Buying a home or managing your existing mortgage can feel like one of life's biggest financial undertakings. Whether you're excitedly stepping onto the property ladder for the first time, purchasing a second home, or looking for smart ways to become mortgage-free faster, understanding the numbers is crucial.
That's where our versatile Mortgage & Repayment Calculator comes in. This powerful, free UK tool is designed to give you clear projections and help you make informed decisions about your property finances in 2025.
UK Mortgage Repayment & Overpayment Calculator
Property & Loan Details
Mortgage Configuration
Mortgage Overpayments (Optional)
Stamp Duty Land Tax (SDLT) - England & NI
Note: FTB relief in England & NI applies for properties up to £625,000. This is an estimate only.
Your Mortgage Projection
Disclaimer: This calculator provides an illustration based on the figures you input and current general understanding of SDLT rates for England & NI. It does not constitute financial or legal advice. Actual costs may vary. Always consult with a qualified mortgage adviser and solicitor. Overpayment conditions can vary by lender.
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Why Use Our All-in-One Mortgage Calculator?
Navigating the world of mortgages can be complex. Our calculator simplifies things by helping you:
Estimate Monthly Payments: Get a clear idea of what your regular mortgage outgoings could be.
Compare Scenarios: See how different deposit amounts, loan terms, or interest rates might affect your payments.
Plan for the Future: Understand the long-term cost of your mortgage and the total interest you might pay.
See the Power of Overpayments: Discover how much time and money you could save by paying extra towards your mortgage.
Planning Your Home Purchase: For First-Time & Second Home Buyers
Taking the plunge into property ownership is a significant step. Our calculator can help you prepare:
First-Time Buyers: Feeling overwhelmed? Our calculator can help demystify the numbers. See how much your monthly payments might be based on the property price, your deposit, the interest rate you anticipate, and how long you want the mortgage to last (the "term"). This can give you a realistic budget for your property search.
Buying a Second Home: If you're looking to purchase an additional property, our calculator can help you project the mortgage repayments. Remember, when buying a second home, you'll also need to factor in other costs such as potential higher rates of Stamp Duty Land Tax (or equivalent in Scotland and Wales) and ensure the mortgage is affordable alongside any existing commitments. Our calculator provides the mortgage figures to help with one part of this bigger picture.
Key inputs for purchase projections:
Property Value / Loan Amount
Deposit Amount
Mortgage Term (in years)
Interest Rate (%)
The calculator will then show you your estimated monthly payment, the total amount you'll repay over the term, and the total interest charged.
Want to Be Mortgage-Free Sooner? See How Overpayments Can Help!
Already a homeowner? Imagine the freedom of paying off your mortgage ahead of schedule! Making overpayments – paying more than your standard monthly amount – can make this a reality. Our calculator shows you just how impactful this can be:
Reduce Your Mortgage Term: By paying extra, you chip away at the outstanding capital balance faster, meaning you could own your home outright years earlier.
Save on Interest: A shorter mortgage term means you pay less interest overall – potentially saving you thousands of pounds!
Flexible Overpayment Options: Our calculator lets you model the effect of extra payments made:
Weekly
Monthly
Quarterly
Yearly
Simply tell the calculator your current mortgage details and the extra amount you're considering paying. It will then project your new, earlier mortgage-free date and illustrate your potential interest savings.
Important Note on Overpayments: Most lenders allow you to overpay a certain percentage of your outstanding mortgage balance each year (often 10%) without incurring Early Repayment Charges (ERCs). Always check your mortgage terms and conditions with your lender before making significant overpayments, as exceeding this allowance could lead to fees that might outweigh the benefits.
How to Use Our Mortgage & Repayment Calculator
Getting your personalised mortgage projection is easy:
Select Your Goal: Indicate if you're a first-time buyer, buying another home, or looking to make overpayments.
Enter Property & Loan Details: Provide information like the property price, your deposit (or the loan amount you need), the mortgage term (e.g., 25 years), and the interest rate.
For Overpayments: If you're looking to overpay, enter your current outstanding mortgage balance, remaining term, interest rate, the extra amount you wish to pay, and how often you'll make this extra payment.
Calculate!
Our tool will then instantly provide you with clear projections.
Understanding Your Mortgage Projections
Your results will typically show:
Estimated Monthly Repayment: The amount you'd pay each month.
Total Amount Repaid: The sum of all your payments over the life of the mortgage.
Total Interest Paid: The cost of borrowing the money.
If Overpaying: Your new mortgage end date and the total interest you could save.
Use these figures to compare different scenarios and understand the financial implications of your choices.
Important Considerations Before You Proceed
While our calculator is a powerful planning tool, keep these points in mind:
Interest Rate Fluctuations: The interest rate you input significantly affects your payments. If you're on a variable rate, this can change. Fixed rates offer certainty for a set period.
Lender Fees: Mortgages can come with other costs, such as arrangement fees, valuation fees, and legal fees. These are not typically included in standard repayment calculations but are part of the overall cost.
Affordability Checks: Lenders will conduct their own detailed affordability assessments before offering you a mortgage, looking at your income, outgoings, and credit history.
Early Repayment Charges (ERCs): As mentioned, if you're overpaying or paying off your mortgage entirely during a fixed-rate or discount period, check for any ERCs with your lender.
Stamp Duty Land Tax: For property purchases, especially second homes, be aware of current Stamp Duty Land Tax (or Land and Buildings Transaction Tax in Scotland / Land Transaction Tax in Wales) rates and how they apply to your purchase price. These changed in April 2025, so ensure you have the latest information.
This calculator does not constitute financial advice.
Take Control of Your Mortgage Journey Today!
Whether you're dreaming of your first home, planning your next property move, or aiming for a mortgage-free future, knowledge is power. Use our free, comprehensive UK Mortgage & Repayment Calculator now to get the clarity you need to make confident financial decisions.
Book a call with a mortgage adviser today.
We’ll find a professional perfectly matched to your needs. Getting started is easy, fast and free.
Disclaimer: This Mortgage & Repayment Calculator provides estimates for illustrative purposes only, based on the information you provide and certain assumptions. It does not constitute financial advice, nor is it a formal mortgage offer. Your actual repayments and the total cost of your mortgage may vary. Lenders will carry out their own affordability checks. Always seek independent financial advice from a qualified professional before making any mortgage decisions. The value of property can go down as well as up. Your home may be repossessed if you do not keep up repayments on your mortgage.