Last updated: 19 July 2026

By Stiv · Design, technology and personal finance

I have been overpaying my Nationwide mortgage since October 2021, using both Sprive and manual payments, so the notes below reflect what I have actually needed to check along the way.

This article contains affiliate or referral links. If you click through and sign up I may earn a commission or referral bonus at no extra cost to you. It does not affect my editorial view. This is information, not financial advice, and CoolCuration is not authorised by the Financial Conduct Authority.

Your home may be repossessed if you do not keep up repayments on your mortgage.

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Overpaying your mortgage can save you a lot of interest, but it is important to understand your lender's rules before you start. This is true whether you are using Sprive or making overpayments manually.

How mortgage overpayments work in the UK

Most UK mortgage products allow you to overpay by a certain amount each year without penalty. This allowance is often expressed as a percentage of your outstanding balance.

According to MoneyHelper, many lenders allow overpayments of up to 10% of the outstanding balance per year without penalty. The Sprive FAQ confirms the same threshold. However, both sources note this varies by lender and by product. Some mortgages calculate the allowance based on the original balance at a fixed date (such as 1 January), while others use the current outstanding balance or the anniversary of when the mortgage started.

Early repayment charges (ERCs)

Early repayment charges usually apply if you overpay beyond your allowed limit, or if you repay a large chunk of your mortgage during a fixed-rate period.

ERCs are typically highest in the early years of a fixed deal and reduce over time. If you overpay above your lender's annual allowance, the charge can be a percentage of the excess amount, sometimes 1% to 5% of the amount overpaid. In some cases this can cost more than the interest you would have saved. Always check:

• Your annual overpayment allowance and when it resets
• Whether the allowance is based on the original or current balance
• How your lender defines an overpayment
• What triggers an ERC on your specific product

How Sprive fits into overpayment rules

Sprive does not change your lender's rules. It helps you build up money via its e-money wallet and automated saving features, which you can then send to your lender as an overpayment. The app lets you set an overpayment limit and will alert you if you approach it.

That means:

• You are still responsible for staying within your annual limit
• Overpayments made via Sprive are subject to the same ERC rules as manual payments
• If you also run a standing order to your lender, the combined total counts towards your allowance
• You should always check your mortgage terms before sending large amounts

If you are unsure how much room you have left in a given year, check your lender's app, your mortgage statement, or call your lender directly before making additional payments.

The Bank of England base rate and your overpayment decisions

The Bank of England held the base rate at 3.75% at its June 2026 meeting (7 to 2 vote), with the next decision due on 30 July 2026. The rate environment affects whether overpaying makes more financial sense than keeping money in savings. This is a trade-off, not a universal rule: it depends on your mortgage rate, your savings rate, and your personal circumstances. See our mortgage overpayment UK guide for a fuller look at when overpaying suits different situations.

What to check before you overpay

• Are you on a fixed-rate deal? If yes, double-check ERC rules before overpaying.
• How much have you already overpaid this year? Track the running total, not just individual payments.
• Does your lender apply overpayments immediately or at statement dates?
• Will the payment reduce your term or your monthly payment? If your goal is to clear the mortgage sooner, reducing the term is usually more effective.

Sprive regulation and wallet protection

Sprive Limited (FRN 919863) is an appointed representative of Connect IFA Ltd (FRN 441505) and New Leaf Distribution Limited (FRN 460421) for mortgage services, all regulated by the Financial Conduct Authority. Money held in the Sprive wallet is an e-money account managed via PrePay Technologies Ltd (FRN 900010). This money is safeguarded, meaning it is kept separate from Sprive's own operating funds. Safeguarding is not the same as FSCS protection: the Financial Services Compensation Scheme does not cover e-money balances.

Is Sprive safe?

This page focuses on mortgage overpayment rules and lender limits, not the broader regulation and security context. For the FCA context, Open Banking explanation, and safeguarding vs FSCS breakdown, read the full guide here:

Is Sprive safe? FCA checks, Open Banking, and what to verify

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This article is for informational purposes only and does not constitute financial advice. Your home may be repossessed if you do not keep up repayments on your mortgage. Mortgage overpayment rules and early repayment charges vary between lenders and products. Always check your own mortgage offer, terms, and lender documentation before making overpayments or changes to your repayment plan. CoolCuration is not authorised by the Financial Conduct Authority. CoolCuration may receive a commission when you use referral links, at no extra cost to you.