If you want to stop being self-employed, there is a specific process HMRC expects you to follow. This applies whether you are moving into an employed role, retiring, pausing trading or closing a venture for good. Get it wrong, or simply walk away without telling anyone, and HMRC will keep expecting tax returns. You may also face penalties for not sending them. The process itself is not complicated. What causes the damage is not doing it at all.
More than four million people are self-employed in the UK, and every year a share of them drift out of it without formally closing things down. They take a job, their income tapers off, or the business quietly stops trading. What they often do not realise is that HMRC’s systems do not notice any of this on their own. Until you actively tell HMRC that you have stopped being self-employed, the taxman still treats you as a trading sole trader. Your obligation to file continues, and so does your exposure to penalties for missing it.
How to Stop Being Self-Employed: Telling HMRC
The starting point is always the same. You must tell HMRC when you stop trading as a sole trader. The same applies if you are ending or leaving a business partnership. This is not optional, and it is not something that sorts itself out when you simply stop invoicing.
You do this using the online service on GOV.UK, signing in with your Government Gateway details. The same service lets you tell HMRC two things at once. First, that you have stopped self-employment. Second, that you no longer need to send a Self Assessment tax return. If you use an agent or accountant, they cannot use this online route on your behalf. They need to phone or write to HMRC instead.
Timing matters here, and it depends on why you are stopping. If you are closing the business outright, retiring, or moving into employment, tell HMRC as soon as the change happens. If you believe you no longer need to send a Self Assessment return, flag this to HMRC as early as you can. HMRC needs time to review the request before the 31 January deadline. Leave it too late and you risk a penalty for a return you thought you no longer owed.
The £1,000 Trading Allowance Exception
If your reason for deregistering is simply that your income has dropped, one specific timing rule is worth knowing. If you expect your gross trading income, before expenses, to be £1,000 or less in a tax year, you do not actually need to be registered as self-employed at all. This falls within the trading allowance.
But if you are deregistering for this specific reason, the timing is different. You tell HMRC after the end of the last tax year you were self-employed, not immediately. GOV.UK gives a clear example. If you stopped trading on 3 March 2026, you tell HMRC after 5 April 2026, once that tax year has closed. This differs from stopping because you have taken a job or wound the business up entirely. In those cases, you notify HMRC straight away.
Your Final Self Assessment Return
Telling HMRC you have stopped is only half the job. You still need to send a final Self Assessment tax return by the usual deadline. It covers the period up to the date you stopped trading.
This final return has a few features that differ from a standard annual return:
- You work out your trading income only for the period you actually traded. If you stopped partway through, this will not be the full tax year.
- You add up your allowable expenses as normal, but these can also include some genuine costs of closing down. GOV.UK gives the example of phone, internet and postage costs incurred letting customers, suppliers or clients know you are closing.
- You calculate capital allowances on any equipment, vehicles or tools you still own. If you sold business assets, such as a laptop, van, tools or stock, you may need to work out a balancing charge or balancing allowance. This adjusts your tax position, comparing what you got for the asset with its written-down value.
- You put the actual date you stopped trading on the return, so HMRC has a clean cessation date on file.
This is where people who go it alone often come unstuck, particularly around capital allowances and balancing charges. Say you bought a £2,000 laptop two years ago and claimed capital allowances on it. If you then sold your business equipment for £600 when you closed up, your final return must reflect that disposal. The basics that applied to your first Self Assessment return still matter on your last one. Our guide to filing your first Self Assessment return covers them.
National Insurance After You Stop Being Self-Employed
Once you stop being self-employed, your National Insurance position changes. Since April 2024, sole traders with profits above the Small Profits Threshold of £6,725 a year do not pay Class 2 contributions in any case; they are treated as paid for State Pension purposes. If you were paying Class 2 voluntarily because your profits fell below that threshold, those payments end when your self-employment does. This should happen automatically once HMRC has processed your notification. Even so, check your next Self Assessment calculation to make sure Class 2 has actually stopped appearing.
The same online service covers National Insurance too, so you deal with it in one process. If anything goes wrong, HMRC’s National Insurance helpline can cancel Class 2 contributions for you. You can also call them if you would simply rather speak to someone.
What Happens to Payments on Account
If you were making payments on account towards your tax bill, stopping self-employment does not automatically cancel these. Your final tax return recalculates what you actually owe, based on your real income for your last trading period. That figure may be considerably lower than the estimate behind your payments on account.
If you have overpaid, HMRC will refund the difference once it processes your final return. If you expect a large payment on account that no longer reflects your actual circumstances, you can ask HMRC to reduce it, either through your online account or by posting form SA303. Do this proactively rather than assuming the system will sort it out for you.
VAT, PAYE and Other Loose Ends to Close
If your business was registered for VAT, you must cancel the registration within 30 days of no longer being eligible. That generally means within 30 days of stopping trading. It also applies if your taxable turnover permanently drops below the deregistration threshold, currently £88,000. You cancel through your VAT online account, and you will need to submit a final VAT return covering the period up to deregistration. Miss this and HMRC may continue to treat you as a VAT-registered business, with filing obligations attached.
If you employed anyone, closing PAYE is a separate task from closing your own self-employment. You need to submit a final Full Payment Submission, complete end-of-year PAYE returns up to the date you stopped employing people, and pay any outstanding PAYE tax and National Insurance due. This runs alongside, not instead of, telling HMRC you have stopped being self-employed as an individual.
You may be moving from sole trader status into a limited company structure, rather than leaving self-employment entirely. In that case, the process looks different again. It is worth understanding the practical differences between the two before you file anything. Our guide comparing sole trader and limited company options sets out what changes and what stays the same.
Why Some Women Stay Registered Below the £1,000 Threshold
Not everyone with income under £1,000 actually wants to stop being self-employed, even though they technically could. There are two common reasons for staying voluntarily registered, and both come up regularly for women.
The first is proving self-employment status for Tax-Free Childcare. To qualify, each parent must expect to earn at least a minimum amount from work, roughly equivalent to 16 hours a week at the National Living Wage, over the following three months. Self-employed parents can use expected average profits, but if you deregister entirely and have no self-employed income at all, you can lose eligibility altogether. If you are weighing this up, read our guide to childcare costs for self-employed mothers. It looks at how these schemes interact with self-employed status in practice.
The second is voluntary Class 2 National Insurance. Paying Class 2 voluntarily, £3.50 a week in the 2025/26 tax year, buys you a qualifying year on your National Insurance record. You generally need 35 qualifying years for the full new State Pension. For women with patchy records, particularly after career breaks or years of low-paid part-time work, that small weekly contribution can be worth far more than the administrative simplicity of fully deregistering.
If either of these applies to you, staying registered below £1,000 is a legitimate, deliberate choice, not an oversight. The key is that you make it knowingly, with a clear reason to keep Self Assessment running, rather than through inertia.
Records, Penalties and Doing It Properly
Once you have told HMRC you have stopped being self-employed and submitted your final return, you are not finished. You need to keep your business records for five years after the 31 January submission deadline for that final return. This includes invoices, receipts, bank statements and anything supporting the figures on your last return. Keep capital allowance calculations and balancing charge workings too.
Here is the single most important thing to understand about this whole process. HMRC does not assume you have stopped trading just because you have gone quiet. Until you formally notify them, HMRC continues to expect annual Self Assessment returns. You can notify them through the online service, by phone, or in writing through an agent. Miss a return, and a £100 penalty follows automatically, regardless of whether you actually had any income to report. Leave it three months and daily penalties of £10 can start, up to a maximum of £900, with further charges at six and twelve months.
This catches out more people than you might expect. Someone takes a full-time job in March and assumes their self-employment has simply ended. The following January, a penalty notice arrives for a return nobody told HMRC they no longer needed to file. Doing it properly closes the loop cleanly and avoids exactly this situation. That means telling HMRC promptly, filing a correct final return, and cancelling VAT and PAYE where relevant. It also means keeping records for the required period. And if you ever return to self-employment, you must register again by 5 October following the end of the tax year in which you restarted, so keep your Government Gateway details somewhere safe.
If you are pausing rather than stopping for good, our guide to restarting a business after a career break covers the return journey. If you are stopping because of a new baby, our guide to Maternity Allowance for the self-employed explains what you can claim instead.
