Mortgage vs Invest

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A growing collection of quick, no-login calculators to help you weigh up mortgage overpayments, investing, budgeting, and long-term planning. All run in your browser.

Retirement

Mortgage Overpay vs Pension

See whether spare monthly cash is more useful in your pension or on your mortgage.

Beginner-friendly estimate with simple assumptions. Use the examples if you want a quick starting point.

Example presets

Use these examples to compare a mortgage-first mindset with a pension-first mindset.

Compare mortgage overpayments with pension investing

Use your spare monthly cash as the common starting point so the comparison stays easy to follow.

Beginner-friendly result

Mortgage interest saved

£30,892

How much interest regular overpayments might avoid.

Net pension value

£148,012

Projected pension value after assumed retirement tax.

Gross pension contribution

£375

The monthly pension amount after tax relief is applied.

Mortgage cleared earlier

5 years 5 months

Shows the term reduction if you overpay instead.

Difference on these assumptions: £117,120.

Example scenario

Example scenario

This example shows the kind of monthly choice many higher earners and homeowners compare.

  • Spare monthly cash: £200
  • Mortgage rate: 4.5%
  • Pension tax relief: basic rate
  • Time horizon: 25 years

It highlights the trade-off between reducing debt sooner and giving pension contributions more time to benefit from tax relief and growth.

Guide

How to read this calculator

Use this section to understand the trade-offs, common pitfalls, and what to look at first.

What this calculator does

It compares using monthly spare cash to overpay your mortgage versus sending it to your pension.

What to focus on

Overpaying improves your mortgage position now. Pension contributions may benefit from tax relief and long-term growth, but usually lock your money away.

Frequently asked questions

Why can pension contributions jump after tax relief?
Because the government adds relief under pension rules.
Can I access pension money now?
Usually no, not until pension access age.
Does this include all pension tax rules?
No. It is a simplified comparison.

For education only — not financial advice.

Read more about our approach in the disclaimer and about pages.

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These calculators are for educational purposes only and do not constitute financial advice.

They use simplified assumptions and browser-based estimates. Read the full disclaimer before making important decisions.