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When is the best time to renew car insurance?

Never auto-renew as you can save by timing your purchase

Chris Collier
Chris Collier
Assistant Editor – Money Products
Edited by Steve Brigden
Updated 11 March 2025

Most car insurance policies run for 12 months, with a new price calculated for the following year around a month before it ends. Yet you should never just auto-renew as it's likely you'll pay more than you need to. You should always compare prices, and we've found that the best time to buy car insurance is 20 to 27 days ahead, as this is usually the cheapest. For why, read this short guide...

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How does car insurance renewal work?

Insurance renewal.

A traditional car insurance policy runs for a period of 12 months, with the price you pay staying the same for the duration (unless any of your details change, such as changing your car, moving home or having an accident).

Around a month before the end date, your current insurer will send you a renewal notice which will have the price you paid for this year, and the price you'd need to pay for another year's cover with that insurer.

You can then choose whether to stick with it (do nothing and it will auto-renew and cover you for another year), switch to a different insurer or try to haggle the price down.

'My renewal quote doubled, but nothing's changed with me - why?'

We've heard this cry a lot over the last 12 months as insurers have been steadily putting prices up. The rise you've seen could be down to rising costs that insurers have to pay to get vehicles repaired or replaced (such as rising staff costs, more expensive parts). Or it may be that your insurer has changed its strategy and no longer wants to offer the cheapest prices, or no longer wants customers with your risk and driving profile.

Of course, the above assumes that nothing's changed with your circumstances. If it has, then where you live, the car you drive, any driving convictions or accidents (losing any no-claims discount) can all change the price you're quoted – see what affects my car insurance quote.

Yet, rather than comparing your new price to the one you paid last year, use a price comparison site to see quotes from multiple insurers at once, so you can work out where your renewal price sits. If all insurers are quoting a similar price, then it's likely that's just the new level you'll need to pay. But never assume this without checking, you could miss out on saving £100s. Here's where you should start.

Alternatively, you can check our current list of which price comparison sites to try and in what order - full info in Cheap car insurance.

When's the best time to buy car insurance?

A graph showing that 'Day 26 is cheapest'.

The cheapest time to get quotes is 20 to 27 days ahead of your renewal date – cover becomes more expensive the closer you get. It's the same if you are buying car insurance for the first time.

Strangely, the timing of your quote can impact the overall price you pay, with car insurance costs increasing the closer you get to your renewal date.

We analysed over one million quotes from January to April 2024, from MoneySupermarket – and found the average quote made on the day of renewal was £2,277, or £906 buying it 26 days earlier. That's a huge difference of £1,371. You might not see savings as large as those, but the principle still stands.

Why is it cheaper to renew my car insurance earlier?

When we concluded the best time to buy analysis why the price differed depending on how far in advance you got the policy. All told us generally the same thing.

It's based around risk – buying it a few weeks before you need it suggests you're more careful and organised, while leaving it to the last minute means you're seen as higher risk, with some insurers telling us they've seen a direct link between drivers who leave sorting their insurance to the last moment and a higher number of claims.

As for why the super-prepared are being penalised with higher prices for getting a quote 30 days in advance, it's basically because there are fewer insurers returning quotes at that stage.

I've found a cheaper policy - how do I cancel my old insurance?

If you've found a cheaper or better policy elsewhere and want to leave your current insurer, you just need to let it know before the renewal date, usually via phone or online chat.

The old insurer may ask you about the new policy and price you've found, and will usually see if it can match it (or come close) to try and lure you to stay. If its counter-offer is decent, and you choose to accept it, then your insurance will automatically renew at that new price (if you've already signed up to a new insurer, just remember to cancel that – which you can usually do with no penalty within the first 14 days).

If you still want to cancel, your insurer will process your request and you should receive confirmation that your cover will stop at midnight the day before your renewal date. See cancelling car insurance for more help.

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