Question 1

How much can I save by overpaying my mortgage by £200 per month?

Accepted Answer

Overpaying your mortgage by £200 per month can save significant amounts depending on your loan details. On a typical £250,000 mortgage at 5.5% with 25 years remaining, adding £200/month saves approximately £35,000-45,000 in total interest and cuts 4-5 years from your mortgage term. The earlier in your mortgage term you start overpaying, the more you save — because interest is highest in early years when your outstanding balance is largest. Use our calculator above with your specific balance and rate for exact figures.

Question 2

Is it better to overpay mortgage or put money in savings account in 2026?

Accepted Answer

In 2026, with mortgage rates at 4-6% and savings accounts offering 4-5% interest, the decision is close. Overpaying your mortgage gives a guaranteed return equal to your mortgage interest rate — tax-free. Savings account interest is taxable above the Personal Savings Allowance. If your mortgage rate exceeds your after-tax savings rate, overpaying wins. Additionally, reducing mortgage debt provides psychological security and eliminates debt risk. Many financial advisors recommend splitting extra money between overpayment and savings for balance.

Question 3

How many years does overpaying mortgage by 10% save?

Accepted Answer

Overpaying your mortgage by 10% of your monthly payment typically saves 3-5 years on a 25-30 year mortgage, depending on your interest rate. On a £300,000 mortgage at 5% with 25 years remaining, a 10% overpayment (approximately £100-150 extra per month) saves roughly 3 years and £20,000-30,000 in interest. Higher interest rates make overpayments more impactful — at 6%, the same overpayment saves even more in total interest.

Question 4

Can I overpay my mortgage without penalty in the UK?

Accepted Answer

Most standard UK mortgages (tracker and variable rate) allow unlimited overpayments without penalty. Fixed-rate mortgages typically allow overpayments of up to 10% of the outstanding balance per year without early repayment charges (ERCs). Exceeding this limit on a fixed deal can result in penalties of 1-5% of the overpaid amount. Always check your specific mortgage terms before making large overpayments. If you're near the end of a fixed term, wait until the deal ends before making large lump sum payments to avoid penalties.

Question 5

What happens if I pay an extra £100 a month on my mortgage?

Accepted Answer

Paying an extra £100 per month on your mortgage directly reduces your principal balance faster than your standard amortization schedule. On a £200,000 mortgage at 5% with 20 years remaining, an extra £100/month saves approximately £18,000-22,000 in total interest and cuts 2-3 years from your term. The bank applies overpayments directly to principal — not future payments — so you immediately start paying less interest each month. Your required monthly payment stays the same, but your loan is paid off significantly sooner.

Scenario	Monthly Payment	Total Interest	Payoff Time
Standard payments	$1,896	$382,560	30 years
+$100/month extra	$1,996	$325,400	26.5 years
+$300/month extra	$2,196	$256,800	22 years
+$500/month extra	$2,396	$210,200	19 years

Mortgage Overpayment Calculator — See How Much You Can Save

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