Car insurance lapsed or renewed late: what happens? Will you lose your discount, and what should you do first?

Your car insurance lapsed 5 days ago and you've only just realised. What should you do first?

You open a drawer, find your policy and see that it expired last week.

Your first thought is “It's probably fine, I haven't hit anything.” Your second is “Will I lose the discount I've built up over five years?”

The answer to the first is more worrying than you might think. The second can still be fixed if you act quickly.

The short answer

While your insurance has lapsed, you have no cover at all, and there is no grace period. If you have an accident after the policy has expired, the repairs to your own car and the other party's losses are entirely yours to pay. Renewing the next day does not cover you retrospectively.

You can usually keep your no-claims discount if you renew quickly. Most insurers keep the discount if you renew within a set period, usually around 30–45 days depending on the insurer. Leave it longer and the discount you've built up may be reset to zero.

At the same time, you need to check two other, separate things: compulsory motor insurance (CMI) and annual vehicle tax, which carry real legal penalties, not just a loss of benefits.

First, be clear: these three are not the same thing

Many people use “lapsed insurance” to mean all three, but they are completely separate, and the consequences of letting each one lapse are very different.

A common mistake is renewing the CMI and the tax and thinking “my insurance is renewed”, when the voluntary insurance, which is what pays for car repairs, has still lapsed.

Still unsure how CMI and the tax differ? Read How CMI and annual vehicle tax differ

1. What happens when voluntary insurance lapses

There is no grace period. This is the most important thing to get right. Cover ends on the date and at the time stated in the policy schedule, with no allowance, unlike a credit card or water and electricity bills, which you can pay a few days late.

Put it in numbers. If you reverse into another car one day after your cover lapsed, THB 40,000 for the other party's repairs plus THB 30,000 for your own makes THB 70,000, all out of your own pocket, while a whole year's premium might be just over ten thousand baht.

Your no-claims discount is the next thing at stake. It rises in steps of 20%, 30%, 40% and 50% according to the number of years without an at-fault claim, and it takes several years to reach the top step. But if you let the cover lapse for longer than the insurer allows, generally around 30–45 days and varying between insurers, the discount may be reset and start again from zero.

The difference between a 50% and a 0% discount is thousands to tens of thousands of baht a year, and it takes several more years to climb back.

The longer the lapse, the more likely the insurer is to ask for a vehicle inspection, because it has no way of knowing what damage the car may have suffered while it was uncovered. An inspection is therefore a normal step when a policy has lapsed, and if the car shows existing damage, the insurer may exclude that damage from cover or decline to insure it.

2. A lapsed CMI carries real legal penalties

CMI is not optional. It is something the law requires every vehicle owner to have.

Under the Road Victims Protection Act 1992, a vehicle owner who fails to arrange insurance faces a fine of up to THB 10,000 under section 37, and a person who uses an uninsured vehicle faces a fine of up to THB 10,000 under section 39. This means that if the owner is also the driver, both sections may apply.

Another immediate effect is that you can't renew your annual vehicle tax, because renewal requires proof of valid CMI. So a lapsed CMI automatically drags your tax into lapsing too.

And if someone is injured in an accident while the CMI has lapsed, the victim can still get help from the Victims Compensation Fund, but the owner is not off the hook, because the law allows the money to be recovered from whoever is liable.

3. Lapsed vehicle tax: the longer you leave it, the more it costs

Unpaid vehicle tax carries a surcharge of 1% per month on the outstanding amount, which keeps building up for as long as it remains unpaid.

Worse still, if the tax goes unrenewed for more than 3 years, the registration is suspended. At that point the owner must return the number plates to the Department of Land Transport (DLT) within the deadline, pay all the outstanding tax plus surcharges, have the car inspected, and then register it again. You get a new registration number, not your old one, and you can't drive the car in the meantime.

Put simply, the time and costs involved at that stage are many times greater than the tax you owed.

What to do now, in order

Step 1: stop using the car if you can, at least until your cover is back, because every day you drive, you carry the full risk yourself.

Step 2: check all three at once. Look at the policy schedule for the voluntary insurance expiry date, check the CMI expiry date, and look at the tax sticker on the windscreen. Write down all three dates; don't guess.

Step 3: renew your CMI first, because it carries legal penalties and is required for renewing the tax. Once that's done, renew the tax.

Step 4: renew your voluntary insurance, and ask clearly about your discount. There are three questions to ask: given how long it has lapsed, can you still keep your no-claims discount; does the car need an inspection; and when will the cover start. Get the answers in writing, not just over the phone.

Stop it happening again

The most effective method isn't setting a reminder on your phone, because most people dismiss it and forget. It's bringing the three expiry dates close together. When your CMI, tax and voluntary insurance all fall due around the same time, you can deal with them in one go, and it's easier to remember than having them spread across different months.

Another way is to let someone else remind you. The broker who looks after your policy already has the expiry dates, and sending reminders in advance is part of their routine work. Starting your renewal about a month early has another benefit: you have time to compare prices and adjust your cover before deciding, instead of rushing to renew the same policy because it's about to expire.

Before your next renewal, also read Comparing car insurance in 2026: 10 things to check before you choose.

Frequently asked questions

My insurance had lapsed for just one day when I had an accident. Can I claim? No. Cover ends on the date and at the time stated in the policy, and there is no grace period. Renewing after the incident does not bring something that has already happened back into cover.

How many days can it lapse before I lose my no-claims discount? There is no single figure for all insurers. It is generally around 30–45 days and depends on each insurer's underwriting conditions. Ask the insurer or your broker directly whether you can still keep the discount in your case.

If I renew with a new insurer, does my no-claims discount move with me? Generally yes, using your record from the previous insurer as evidence, but it is subject to the new insurer's underwriting conditions, and the lapse is still taken into account.

My CMI has lapsed but I haven't driven anywhere. Am I breaking the law? The law sets the owner's duty to arrange insurance separately from using the vehicle, so don't rely on the argument that you haven't driven. The safer course is to renew it as soon as possible.

My insurance has lapsed and the car has existing damage. Can I still renew? In many cases, yes, but the insurer will usually inspect the car first and may exclude the existing damage from cover. It's best to be honest from the start, because concealing anything affects your right to claim later.

Not sure how long it has lapsed, or whether you can keep your discount? Let us check for you

Just message us on LINE with a photo of your old policy schedule or your registration number and the name of your previous insurer.

We'll check how many days it has lapsed, whether you can keep your no-claims discount, whether the car needs an inspection, and in what order to renew your CMI, tax and voluntary insurance, free of charge.

LINE Official: @prakanthai Tel. +66 2 459 2223 Website: www.prakanthai.com

Prakanthai.com, non-life insurance broker, serving since 2004, broker licence no. 5104000004

Note: this article provides general information. Underwriting conditions, keeping your no-claims discount and vehicle inspections follow each insurer's own rules, which may differ and may change. Fines and surcharges are set by law. Check with your insurer and the DLT before taking action.