Overpay your mortgage or boost your pension?

You have some spare cash each month, or a lump sum. Should it go against the mortgage or into the pension? The honest answer depends on your tax position, your mortgage rate, and what investments do next. This tool works it through with your real numbers and shows the difference over time.

This is guidance based on the figures you enter, not personalised financial advice. Figures use 2026/27 tax rates for England, Wales and Northern Ireland.

Your details

Name (optional) Employment status Annual salary How you pay into your pension I am a Scottish taxpayer

Spare cash you could deploy Per month One-off lump sum (optional)

Your mortgage

Outstanding balance Current interest rate (%) Years left on the mortgage Current deal ends in (months) Leave at 0 if you are on a variable rate or do not want to model a renewal. Rate you assume for the rest of the term after that (%) Your assumption, not a promise. Starts the same as your current rate. Change it to test a higher or lower renewal rate. If you overpay, you want to

We have a child under 5, or a child in eligible childcare (this affects the £100,000 childcare cliff).

The investment assumption

Pensions are invested, so the outcome is a range, not a promise. We show three assumed net returns. You can see how much the answer moves between them.

Comparison horizon (years) Headline scenario

Your comparison

Talk it through with an adviser

This tool cannot see your other savings, protection, estate plans or goals. An adviser can. Book a free, no obligation call with Fane Financial Services, or send this report straight to your own adviser.

Book a call with an adviser

Email yourself the PDF summary

You already have your result above. Enter your details to have the full PDF emailed to you. The report goes to you only. Your figures and result are never sent to Fane Financial Services or saved by them.

Name Email Phone (optional)

I agree to Fane Financial Services storing my name, email and phone number and contacting me about this enquiry. My report figures are not shared with Fane Financial Services. See how we handle your data below.

Fane Financial Services stores only your name, email and phone number, and only to respond to your enquiry. Your report figures and result stay on your device and are emailed to you, not to Fane Financial Services, unless you choose to share them. Questions or removal requests: clientcare@fanefinancialservices.co.uk.

Important. There are many factors involved in the decision to pay down a mortgage or invest for retirement, and this tool is in no way a replacement for advice from a qualified professional. It is for information purposes only, and is intended to stimulate discussion about the various factors to consider. It gives general guidance based on the figures you enter and does not account for your wider circumstances. Tax treatment depends on individual circumstances and may change. Investments can fall as well as rise and you may get back less than you put in. Your home may be repossessed if you do not keep up mortgage repayments. For advice on your own situation, speak to a regulated financial adviser such as Fane Financial Services.