How Much Can You Overpay on Your NatWest Mortgage?

NatWest says that on a fixed or tracker rate product you can pay up to 20% of your outstanding balance each year without an early repayment charge, and that if you repay more than this a charge will be incurred. For a mortgage with sub-accounts it applies the 20% to each sub-account. On its Standard Variable Rate it says there is no limit to how much you can overpay and no charge.

Lender terms change, and your own mortgage offer is what applies to you. This page was checked on 30 September 2026 against NatWest’s own page, linked below.

This page reports what NatWest publishes on its own site. It is general information, not advice and not a statement of your own mortgage terms. See our editorial policy for how we source and re-check lender facts.

What NatWest says about the yearly allowance

NatWest says that on a fixed or tracker rate product you can pay up to 20% of your outstanding balance each year without an early repayment charge, and that if you repay more than this a charge will be incurred. For a mortgage with sub-accounts it applies the 20% to each sub-account. On its Standard Variable Rate it says there is no limit to how much you can overpay and no charge.

If you are on a fixed or tracker rate product, you can pay up to 20% of your outstanding balance each year without incurring an Early Repayment Charge. If you wish to repay more than this, a charge will be incurred.

If you’re on a fixed or tracker rate product, you can pay up to 20% of your outstanding balance for each of your sub-accounts before an ERC will apply. If you exceed your allowance, you’ll have to pay an ERC on the amount over 20%.

If you’re on our Standard Variable Rate (SVR), there’s no limit to how much you can overpay, and there’s no ERC.

How NatWest applies overpayments

NatWest says you may be able to use a one-off overpayment to reduce your remaining term, or choose to change your monthly contractual payment.

You may be eligible to use your one-off overpayment to reduce your remaining term, or you could choose to change your monthly contractual payment.

Source: NatWest: How much can I overpay on my mortgage?. Checked on 30 September 2026.

Working out a charge

If you are thinking about overpaying more than an allowance, use our early repayment charge calculator with the figures from your own mortgage offer. Our guides explain what an early repayment charge is, when an allowance resets and how the yearly limit works. If you are unsure, consider speaking to a regulated mortgage adviser.

Questions people ask

How much can I overpay on a NatWest mortgage?
NatWest says that on a fixed or tracker rate product you can pay up to 20% of your outstanding balance each year without an early repayment charge, and that if you repay more than this a charge will be incurred. For a mortgage with sub-accounts it applies the 20% to each sub-account. On its Standard Variable Rate it says there is no limit to how much you can overpay and no charge. Check your own mortgage offer, because the terms that apply to you are in it.

Is this the same as my own mortgage terms?
Not necessarily. This page reports what NatWest publishes on its own site, as checked on 30 September 2026. Your mortgage offer sets the terms that apply to you, and they can differ by product and by the date you took the mortgage.

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