Nationwide allows overpayments of up to 10% of your outstanding mortgage balance per year on fixed-rate deals without an early repayment charge. Tracker mortgages have no overpayment limit. You can overpay monthly or as a lump sum — both count toward your annual allowance.
Nationwide is the UK's largest building society with over 16 million members. If you have a Nationwide mortgage and want to overpay, here's everything you need to know — the exact rules, how to do it, what it costs if you go over, and real examples of how much you could save.
On a fixed-rate Nationwide mortgage of £180,000, you can overpay up to £18,000 per year (10%) without any early repayment charge. That works out to £1,500 per month in overpayments. Most homeowners overpay far less than this limit.
| Mortgage Type | Annual Allowance | Penalty if Exceeded | Best For |
|---|---|---|---|
| Fixed Rate (2yr, 5yr, 10yr) | 10% per year | ERC: 1–5% | Most buyers |
| Tracker Mortgage | Unlimited | None | Flexible overpayers |
| Standard Variable Rate (SVR) | Unlimited | None | No-fix customers |
| Base Mortgage Rate (BMR) | Unlimited | None | Legacy customers |
Go to nationwide.co.uk or open the Nationwide Banking app on your phone.
Select your mortgage from the accounts list. You'll see your current balance, rate, and remaining term.
Nationwide shows your remaining annual allowance — check this before making any payment to avoid charges.
Transfer the extra amount to your mortgage account. You can do this as a one-off lump sum or set up a regular monthly overpayment.
Ask Nationwide to apply the overpayment to reduce your term — not your monthly payment. This saves more interest.
Emma took out a 5-year fixed rate Nationwide mortgage. She overpays £250/month — well within her £22,000 annual allowance (10% of £220,000).
If you overpay more than 10% of your outstanding balance in a year on a Nationwide fixed-rate mortgage, you will be charged an Early Repayment Charge. This is typically 1–5% of the amount overpaid above the limit, depending on how many years are left on your fixed-rate deal. Unused allowance from previous years cannot be carried forward. The allowance resets on 1 January each year for most Nationwide mortgages — but always check your specific mortgage offer document.
| Lender | Fixed Rate Allowance | Tracker Allowance | Notes |
|---|---|---|---|
| Nationwide | 10% per year | Unlimited | Resets annually |
| Halifax | 10% per year | Unlimited | Standard allowance |
| Barclays | 10% per year | Unlimited | Standard allowance |
| NatWest | 10% per year | Unlimited | Standard allowance |
| HSBC | 10% per year | Unlimited | Standard allowance |
| Santander | 10% Jan–Dec | Unlimited | Calendar year reset |
Enter your Nationwide mortgage details into our free calculator and see exactly how much you'd save by overpaying.
Try the Free Calculator →On a Nationwide fixed-rate mortgage, you can overpay up to 10% of your outstanding balance per year without an early repayment charge. On a £200,000 mortgage that's up to £20,000 per year, or about £1,666 per month. Tracker and SVR mortgages have no overpayment limit.
No, not within the 10% annual allowance. If you exceed this limit on a fixed-rate deal, Nationwide will apply an Early Repayment Charge — typically 1–5% of the excess amount. Always check your remaining allowance in the app before making a large overpayment.
For most Nationwide mortgages, the overpayment allowance resets on 1 January each year. Unused allowance from the previous year cannot be carried over. Check your specific mortgage offer document to confirm the reset date for your deal.
Yes. You can make a one-off lump sum overpayment via the Nationwide app, website, or by calling their mortgage team. Both monthly and lump sum overpayments count toward your 10% annual allowance, so check your remaining allowance before making a large payment.