How No-Claims Bonus Works on UK Car Insurance

The no-claims bonus (NCB) — sometimes called a no-claims discount (NCD) — is a reduction in your car insurance premium for each year you drive without making a fault claim. It's one of the most significant financial benefits available to careful UK drivers, capable of reducing premiums by more than half.

How Much NCB Is Worth

The discount varies by insurer, but typical NCB scales look like this:

• 1 year NCB: 20–30% discount
• 2 years: 30–40%
• 3 years: 40–50%
• 4 years: 50–60%
• 5+ years: 60–75%

Some insurers cap NCB at 5 or 6 years; others allow it to continue building beyond this with additional "super NCB" discounts. The specific percentages vary between insurers, but the principle is consistent: every clean year is worth real money.

How Fault Claims Affect NCB

A fault claim — any claim where you are wholly or partly responsible, or where the insurer cannot recover costs from a third party — typically reduces your NCB by 2 years. Depending on your starting point:

• 5 years NCB after one claim → drops to approximately 3 years
• 3 years NCB after one claim → drops to approximately 1 year
• 1 year NCB after one claim → drops to zero

Two claims in a year can wipe out NCB entirely and may trigger a policy cancellation by some insurers.

NCB Protection: How It Works

Most insurers offer NCB protection as a paid add-on, typically costing £20–£50 per year. Protected NCB allows you to make a specified number of claims (usually one or two within a three-year period) without your NCB being reduced. Your discount percentage is preserved at renewal.

Important caveat: NCB protection does not protect your premium from rising after a claim. Insurers still load the base rate for claimants — they just can't reduce the percentage NCB discount. In practice, your renewal premium will still increase, just not by as much as it would without protection.

Is NCB Protection Worth Buying?

For drivers with 4 or more years of NCB, protection is almost always worth the small extra cost. The value of a 60–75% discount is substantial — losing it would add hundreds of pounds to annual premiums for years. For drivers with 1–2 years NCB, the maths is less clear.

Transferring Your NCB

NCB is attached to you as a driver, not to a specific vehicle or insurer. When you switch insurers, your NCB transfers with you. The new insurer will ask for proof — typically a copy of your previous renewal notice showing your NCB level, or a letter from your previous insurer confirming it.

NCB is not transferable between policies for different vehicles. If you have a 5-year NCB on your main car, you cannot apply that discount to a second car on a separate policy — that second policy would start from zero NCB.

Non-Fault Claims and NCB

If you're involved in an accident that isn't your fault — for example, you're stationary and another driver hits you — and your insurer recovers all costs from the at-fault driver's insurer, your NCB should not be affected. However, if recovery is incomplete or disputed, some insurers still reduce NCB. Check your policy wording carefully.

The Long-Term Value of NCB

Building NCB to 5 years and maintaining it is one of the most effective long-term strategies for managing car insurance costs. A driver who maintains 5+ years NCB and buys optimally (comparing each year rather than auto-renewing) will pay dramatically less than a driver with the same profile but a history of small claims.