Disclaimer

Important things to know

These calculators are for guidance only. They are designed to help you understand ideas and compare options, but they are not a substitute for personal financial advice.

What the results mean

The results are estimates based on the details you enter and the assumptions used in each calculator. They are not promises, recommendations, or predictions of what will happen.

What the calculators may not include

  • Changes to interest rates over time
  • Inflation and changing living costs
  • Fees, charges, and penalties in every situation
  • Detailed tax rules or your full personal circumstances
  • Market movements and investment risk in the real world

A few important reminders

  • Investment returns are not guaranteed. You could get back less than you put in.
  • Mortgage overpayment rules vary by lender, so always check your mortgage terms.
  • Tax rules can change and may apply differently to you.
  • Big financial decisions should be checked carefully before you act.

When to get extra help

If you are making an important decision about your mortgage, pension, investments, or debt, it may be sensible to speak to a regulated financial adviser or another qualified professional.

© 2025 Mortgage vs Invest
Educational calculators for UK financial planning.

For guidance only. This site does not provide financial advice.

Back to calculators