Disclaimer
Last Updated: 20 January 2026
IMPORTANT: This calculator provides illustrative estimates only and does not constitute financial advice. Always consult with a qualified financial advisor or your mortgage lender before making decisions about your mortgage.
1. General Disclaimer
The Mortgage Overpayment Calculator (the "Service") is provided for informational and educational purposes only. The calculations, estimates, and information presented are illustrative and should not be relied upon as the sole basis for making financial decisions.
2. Not Financial Advice
The Service does not provide financial, investment, mortgage, legal, or tax advice.
The results produced by the calculator are general in nature and do not take into account your specific financial circumstances, goals, or needs. We are not licensed financial advisors, mortgage brokers, or financial consultants.
You should always:
- Consult a qualified independent financial advisor before making mortgage decisions
- Contact your mortgage lender to confirm overpayment terms and conditions
- Verify all calculations independently
- Consider your complete financial situation, including emergency funds and other debts
- Understand the opportunity cost of overpaying versus other investments
3. No Guarantee of Accuracy
While we strive to ensure the calculator is accurate and reliable, we cannot guarantee that:
- Calculations are completely accurate or error-free
- Results reflect your actual mortgage terms or lender policies
- The calculator accounts for all variables affecting your mortgage
- Results will match those provided by your mortgage lender
Calculations may not account for:
- Early repayment charges (ERCs) imposed by your lender
- Annual overpayment limits (typically 10% of the outstanding balance)
- Changes in interest rates (for variable or tracker mortgages)
- Remortgage costs or fees
- Specific lender terms and conditions
- Tax implications or benefits
- Changes in personal circumstances
4. Illustrative Purposes Only
The calculator provides illustrative estimates based on the inputs you provide. These estimates are simplifications and may not reflect real-world complexity.
Actual results will vary based on:
- Your specific mortgage product and lender
- Interest rate type (fixed, variable, tracker)
- Payment frequency (monthly, annual)
- Overpayment restrictions or penalties
- Changes in economic conditions
- Your personal financial situation
5. Lender-Specific Terms
Every mortgage lender has different terms and conditions regarding overpayments. Common restrictions include:
- 10% annual limit: Many lenders cap overpayments at 10% of the outstanding balance per year
- Early repayment charges (ERCs): Fixed-rate mortgages often have ERCs if you overpay beyond the allowed limit
- Fixed-rate period restrictions: Some lenders prohibit or limit overpayments during fixed periods
- Minimum overpayment amounts: Some lenders require overpayments to exceed a minimum threshold
Always check your mortgage offer document or contact your lender before making overpayments.
6. No Liability for Financial Decisions
We are not responsible for any financial losses, damages, or consequences resulting from your use of the calculator or reliance on its results.
By using the Service, you acknowledge that:
- You use the calculator entirely at your own risk
- You are solely responsible for any decisions made based on the results
- We are not liable for errors, omissions, or inaccuracies in calculations
- We are not liable for any financial losses incurred from using the Service
7. Regional Limitations
The calculator is designed for UK mortgages and may not be suitable for mortgages in other countries. If you are outside the UK, please consult a local mortgage advisor.
The calculator assumes:
- UK mortgage structures and terminology
- Annual overpayment frequency (not monthly)
- Repayment mortgages (not interest-only)
- Standard annuity-based repayment calculations
8. Educational Purpose
The calculator is designed to help you:
- Understand the potential impact of mortgage overpayments
- Explore different overpayment scenarios
- Gain insight into how overpayments reduce interest and term
- Make more informed decisions when consulting with professionals
It is not a substitute for professional advice or a detailed mortgage illustration from your lender.
9. Variable Interest Rates
If you have a variable or tracker mortgage, your interest rate may change over time. The calculator uses a fixed interest rate for its calculations and does not predict future rate changes.
Changes in interest rates will significantly affect:
- Your monthly payment amount
- Total interest paid over the mortgage term
- The time required to repay your mortgage
10. No Endorsement of Overpayments
The Service does not recommend or endorse overpaying your mortgage. Whether overpaying is the right choice depends on your individual circumstances, including:
- Your current interest rate
- Other debts (credit cards, loans) with higher interest rates
- Emergency fund adequacy
- Retirement savings goals
- Other investment opportunities
- Flexibility and liquidity needs
In some cases, it may be more beneficial to invest excess funds elsewhere rather than overpaying your mortgage. Consult a financial advisor to explore your options.
11. Third-Party Links and Advertising
The Service may contain links to third-party websites or display third-party advertisements. We do not endorse, control, or assume responsibility for:
- Third-party content or accuracy
- Products or services advertised
- Third-party privacy practices
Your interactions with third parties are solely between you and them.
12. Data Privacy
Your mortgage data (balance, term, interest rate) is processed entirely in your web browser. We do not store, transmit, or have access to your mortgage details. See our Privacy Policy for more information.
13. Changes to This Disclaimer
We may update this disclaimer from time to time. The "Last Updated" date at the top indicates when it was last revised. Continued use of the Service after changes constitutes acceptance of the updated disclaimer.
14. Further Information
For more information, please see:
Key Takeaway
This calculator is a helpful starting point for understanding mortgage overpayments, but it is NOT a substitute for professional financial advice. Always verify calculations with your lender and consult a qualified advisor before making financial decisions.