You must keep your business records for the required period after you stop trading. HMRC can ask to see them, and they can help you answer a later claim. The period runs from the tax year, company financial year or event the record relates to, not from the day you close.
Tax and accounting records
Sole traders and partners
The same period applies to the records you need for your final return. A partner keeps their own records, and the nominated partner also keeps the partnership's.
Limited companies
GOV.UK advises keeping other business documents, such as bank statements, invoices and receipts, for 7 years after a company is struck off.
VAT and PAYE
Deregistering from VAT does not end this, though you no longer need to keep digital records in functional compatible software.
Employee and workplace records
Keep working time records for 2 years from the date they were made.
If you carried out health surveillance of employees exposed to hazardous substances, keep each health record for at least 40 years from the last entry in it. If you stop trading, you must tell the Health and Safety Executive in writing and make those records available to it.
Contracts
Keep your contracts with suppliers, customers, landlords and former staff for at least as long as a claim on them can be brought.
Store your records
You can keep records on paper, digitally or in software, as long as they stay accurate and you can identify each business transaction. Choose somewhere you can retrieve them from for the whole period, and make sure your accountant or a co-director knows where they are.
If records are lost, stolen or destroyed, do your best to recreate them. For Self Assessment you can use estimated or provisional figures, and you must tell HMRC when you file that you have done so.
What happens if you do not keep them
Legal basis
Primary legislation and key regulations