The Complete UK No Claims Bonus Guide (2026)

The No Claims Bonus (NCB) — also called No Claims Discount (NCD) — is the most powerful discount mechanism in UK car insurance. After 5 years, it can cut your base premium by 60–75%. Here's everything you need to know.

What Is No Claims Bonus?

NCB is a discount applied to your car insurance premium for each year you drive without making a fault claim. The longer your claim-free run, the larger the discount.

Important: NCB only applies to your own policy. If you're a named driver on someone else's policy, you don't accumulate NCB on that vehicle (though some insurers now offer named driver NCB schemes — check the policy details).

How Much Is NCB Worth?

Discounts vary by insurer, but a typical scale looks like this:

Once you hit 5 years, most insurers cap the discount at 60–75%, though some reward longer runs. Always check the maximum at your specific insurer.

Should You Protect Your NCB?

NCB protection allows you to make a specified number of claims within a policy year without losing your accumulated discount. It typically costs £20–60/year on top of your premium.

When it's worth it:

• You have 4+ years of NCB
• Your annual premium is high enough that losing 2–3 years of NCB would cost significantly more than the protection fee
• You drive in higher-risk environments (urban, commuter routes, young household members)

When it may not be worth it:

• You have only 1–2 years NCB (the cost of losing it is relatively small)
• Your annual premium is low and the protection fee represents a high percentage of it

One important caveat: NCB protection does not protect you from premium increases. If you make a claim (even a protected one), your insurer may still raise your base premium at renewal. NCB protection only prevents the loss of the discount itself.

What Counts as a Claim Against Your NCB?

• At-fault claims (you caused the accident): yes, affects NCB
• Not-at-fault claims (fully recovered from third party): generally no effect on NCB, but policies vary — check your terms
• Windscreen claims: most insurers exclude windscreen claims from NCB impact
• Fire and theft claims: usually affects NCB (check your policy)

How to Transfer Your NCB

Your NCB belongs to you, not your car or insurer. When you switch insurers, you take your NCB with you. To prove it, your previous insurer will issue an NCB proof letter (usually included in your renewal documents or available on request).

Most insurers accept proof letters from the last 2 years. Some accept up to 3 years if you've had a break in cover.

If you've owned multiple cars simultaneously, you may only use each year's NCB on one vehicle. You can't claim 5 years of NCB on two cars simultaneously using the same history.

NCB When You Change Insurers

Switching insurers is one of the most effective ways to reduce your premium — but many drivers worry about losing their accumulated NCB in the process. In practice, your NCB is fully portable:

1. Request your NCB proof letter from your current insurer — most send it automatically with your renewal pack, or you can request it at any time
2. Declare your NCB years when getting quotes on comparison sites or direct
3. Submit proof to your new insurer within 21 days of your new policy start (most give you this window)

Your NCB proof is valid for up to 2 years after it was earned in most cases. If you've had a gap in cover, contact prospective insurers directly — some accept older proof depending on circumstances.

Tip: keep your NCB proof letter saved as a PDF. You'll need it every time you switch insurer.

What Happens to NCB on a Company Car?

If you drive a company car through your employer, you don't accumulate NCB on a personal policy — because you're not the named insured. However:

• Some insurers now accept fleet or company car driving experience as evidence of claim-free driving — ask prospective insurers directly
• If you move from a company car to a personal vehicle, you may be able to negotiate a starting NCB of 1–2 years based on a letter from your employer confirming your accident-free history

This isn't guaranteed, but it's worth asking, especially if you have 5+ years of driving company vehicles without a claim.

NCB and Shared Household Vehicles

Each insured vehicle in a household has its own NCB. If you and a partner each own and insure separate cars, you each build your own NCB independently. However:

• You cannot apply the same NCB years to two vehicles simultaneously (unless your insurer offers a "mirror NCB" scheme)
• Named drivers on each other's policies do not earn NCB on the other's car (unless the insurer has a named driver NCB scheme)
• If you sell one car and buy another, your NCB transfers to the new vehicle — it belongs to you, not the car

How NCB Interacts with Claims You Didn't Cause

One of the most misunderstood aspects of NCB is what happens when someone hits your parked car, or when a third party is clearly at fault:

• If your insurer recovers all costs from the third party's insurer: your NCB is typically unaffected
• If costs cannot be fully recovered: your insurer may treat the claim as affecting NCB, even if you were innocent
• Uninsured driver damage: if you're hit by an uninsured driver and you claim via your own insurer, this can affect your NCB — even though you did nothing wrong. The Motor Insurers' Bureau (MIB) handles uninsured driver claims separately, but if routed through your own insurer, NCB impact depends on the policy

Best practice: before agreeing to any settlement with another driver's insurer, check with your own insurer whether accepting payment directly (rather than routing through yours) will protect your NCB.

Building NCB Quickly

Some strategies for accumulating NCB faster:

1. Choose higher excess: You're less likely to claim for minor scrapes if the excess makes small claims uneconomical. This means fewer claims and faster NCB accumulation.

2. Drive less: Fewer miles means fewer accident opportunities. Low-mileage drivers tend to maintain cleaner records.

3. Use a named driver NCB scheme: Some insurers now allow named drivers to build their own NCB. If you frequently drive as a named driver, look for insurers that offer this.

4. Pay small repairs privately: If you cause minor damage to another vehicle and the repair cost is close to your excess, it may be worth settling privately rather than claiming — preserving your NCB. Get a written receipt and confirm the other party won't contact insurers.

How NCB Policies Vary Between Insurers

Not all insurers handle no-claims bonuses identically. A few key differences to be aware of when shopping around:

• Maximum NCB cap: most insurers cap the discount at 5 years, but some recognise up to 9 years of claim-free driving with a slightly higher ceiling discount. If you have an exceptionally long claim-free history, it's worth asking prospective insurers what their maximum NCB level is.
• Proof letter expiry: NCB proof letters are typically accepted for 2 years from the date they were issued. If you've had a gap in cover or simply haven't switched insurer in a while, your old proof letter may no longer be accepted — contact your previous insurer to obtain a fresh one.
• Named driver NCB schemes: a small number of insurers (including some comparison-site quotes) now allow named drivers to build their own NCB credit. This is not standard across the market, so check policy terms carefully if this matters to you.

Always review the specific NCB terms of a new insurer before switching — particularly the step-back clause and maximum discount level.

Your no-claims bonus is one of the most valuable financial assets in your driving life. Build it, protect it, and transfer it carefully — it can save you thousands over a lifetime of driving.