UK accounting records rules require you to keep enough evidence to show your business income, costs, assets, liabilities and tax figures. For a founder, the useful standard is a clear trail from source document to bookkeeping entry to accounts or tax return, kept for the relevant period and readable if HMRC asks.
Carr Accounting Studio helps UK founders keep records clean enough for HMRC, Companies House and for making better business decisions, without letting finance admin eat the week.
Who this guide is for
This guide is for UK solo founders and founder-led teams who want to know what records need to exist, what HMRC expects in practice, and how accountants usually deal with the gap between legal minimum and real-life bookkeeping.
It covers small limited companies, sole traders, VAT-registered businesses and employers at a high level. If your business has stock, overseas sales, grants, property, crypto, finance leases, complex VAT or an HMRC check already open, make sure you get specific advice.
What accounting records do UK businesses need to keep?
The records depend on the legal shape of the business, but the principle is the same: the figures in the accounts or tax return should be explainable from underlying evidence.
| Business type | Records to keep | What they prove |
|---|---|---|
| Limited company | Money received and spent, assets, debts, stock, goods bought and sold, invoices, receipts, bank statements and supporting calculations | The accounts, Corporation Tax return and Companies House filings are based on real transactions |
| Sole trader or partnership | Sales and income, business expenses, personal income records, VAT records where registered, PAYE records where employing people | The Self Assessment return is complete and the profit figure is supportable |
| VAT-registered business | Sales and purchase records, VAT invoices issued and received, VAT account, adjustments, credit notes and scheme records | The VAT return can be traced back to valid VAT evidence |
| Employer | Pay, deductions, HMRC payroll reports, payments to HMRC, tax codes, leave, sickness and benefits records | PAYE submissions and payments are accurate |
For a limited company, GOV.UK's company records guidance is the starting point: the company needs financial and accounting records, plus company records such as shareholders, resolutions and loans secured on assets. For a sole trader, GOV.UK's self-employed records guidance focuses on the records needed to complete the Self Assessment return and show HMRC the figures if asked.
How long should accounting records be kept?
Use six years as the practical default for business records, then keep longer where the record still matters. The strict minimum changes by tax or entity type.
| Record area | Minimum retention period | Practical note |
|---|---|---|
| Limited company accounting records | 6 years from the end of the last company financial year they relate to | Keep longer for long-life assets, multi-period transactions, late returns or open HMRC checks |
| Sole trader or partnership records | At least 5 years after the 31 January Self Assessment filing deadline for the relevant tax year | Very late returns can extend the period |
| VAT records | At least 6 years | Some VAT schemes require longer retention |
| PAYE records | 3 years from the end of the tax year they relate to | Payroll records still need to show the reports were accurate |
The reason six years works as a day-to-day rule is simple: it covers the usual company and VAT retention period, and it is easier for a founder to remember one conservative habit than several short ones. Keep permanent or long-term records separately: loan agreements, investment paperwork, leases, asset purchases, share records, large contracts and anything linked to property or long-life equipment.
What does HMRC expect during a check?
HMRC expects records that are accurate, complete enough for the return, and easy to read. The practical test is whether someone can follow a figure from the return back to the evidence without relying on memory.
That usually means being able to produce:
- bank and card statements;
- sales invoices, till/POS reports, platform exports or payment-processor reports;
- supplier invoices, receipts and expense evidence;
- VAT return workings and valid VAT invoices where VAT has been reclaimed;
- payroll reports, payslips and payment records;
- director loan, dividend and shareholder paperwork where the business is a company;
- stock, work-in-progress, accrual, prepayment and asset calculations where relevant;
- notes explaining judgement calls, estimates or unusual transactions.
A bank statement is useful evidence that money moved. It does not always prove the business purpose, VAT treatment, tax deductibility or correct accounting period. That is where invoices, receipts, contracts and notes do the work.
Does HMRC require digital records?
There is no single digital-record rule that applies to every UK business record in the same way, but the direction is clear.
For everyday paperwork, HMRC is happy with digital copies. You can scan or photograph your bills, invoices and receipts and throw the paper away, as long as the copy is readable and shows everything needed for a correct and complete return. A handful of records are the exception and should be kept in their original form: dividend vouchers showing a tax credit, statements showing income tax deducted at source, Construction Industry Scheme payment and deduction statements, and anything supporting a claim for foreign tax credit relief.
That is separate from Making Tax Digital. MTD is a stricter, positive duty to keep certain records digitally in compatible software, not just permission to go paperless.
VAT-registered businesses are within Making Tax Digital for VAT unless exempt, so some VAT records need to be kept digitally and returns are filed through compatible software.
MTD for Income Tax is now being phased in for sole traders and individual landlords by qualifying income. The current timetable is:
| Tested Self Assessment return | Qualifying income | Start date |
|---|---|---|
| 2024 to 2025 | More than £50,000 | 6 April 2026 |
| 2025 to 2026 | More than £30,000 | 6 April 2027 |
| 2026 to 2027 | More than £20,000 | 6 April 2028 |
Under MTD for Income Tax, affected people must keep digital records for self-employment and property income and expenses, send quarterly summary updates, then submit the annual tax return through compatible software. The quarterly updates are summaries, not tax returns, and normal supporting records still need to be kept.
For companies, HMRC is not introducing MTD for Corporation Tax at the moment, but the filing route is still becoming more software-led. HMRC's free Company Tax Return service closed on 31 March 2026, and Companies House accounts filing is due to become software-only from April 2028.
Spreadsheets can still have a place, especially for simple records, but they need to fit the filing obligation. For MTD, a spreadsheet route usually needs compatible bridging software and proper digital links.
What do businesses and accountants do in practice?
Day-to-day practice usually sits in one of four patterns.
| Pattern | How it works | Risk level |
|---|---|---|
| Cloud bookkeeping as you go | Bank feed, invoices, bills, receipts, payroll and VAT records kept in software during the year | Lowest, if reconciled properly |
| Spreadsheet plus evidence folder | Simple spreadsheet supported by saved invoices, receipts and bank statements | Fine for simple cases, weaker as the business gets busier |
| Accountant-led periodic tidy-up | Founder sends records monthly or quarterly, accountant reconciles and queries gaps | Good if the handover dates are respected |
| Year-end reconstruction | Accountant rebuilds the year from bank statements, emails, PDFs and founder explanations | Works in simple cases, but slower, dearer and weaker in an HMRC check |
The year-end reconstruction pattern is still common. It can get a return filed, but it turns the accounts into a memory exercise. The founder has to explain old transactions, missing receipts and personal spending months after the event. Under VAT and MTD, that gets harder to defend and more expensive to put right.
The better habit is small and regular: separate the business bank account, capture evidence as the cost happens, reconcile at least monthly, and keep a short query list for anything the records do not explain.
What should a founder keep from day one?
For a straightforward founder-led business, start with this record pack:
- a separate business bank account;
- sales invoices or sales platform exports;
- supplier bills and receipts;
- monthly bank statements for every bank, card and payment account;
- payroll records if anyone is paid through PAYE;
- VAT records and VAT return support if registered;
- dividend vouchers, board minutes and director-loan notes if a company;
- loan, grant, funding and investment documents;
- asset purchase records for equipment, hardware, vehicles or larger software contracts;
- a short monthly note for anything unusual.
That last item is underrated. A short note saying "refund dispute with customer", "director paid personally, repaid later", or "annual software contract paid upfront" can save a lot of year-end detective work.
What happens if records are missing?
Missing records are not ideal, but they are not a reason to freeze. Rebuild what you can from bank statements, supplier portals, customer invoices, payment processors, payroll software and emails.
For Self Assessment, HMRC distinguishes between estimated figures and provisional figures. Estimated figures are your best attempt where actual figures cannot be produced. Provisional figures are temporary and need replacing when actual figures become available. For companies, GOV.UK says to do your best to recreate lost records, tell the Corporation Tax office straight away if records cannot be replaced, and include the position in the Company Tax Return.
The practical point is to leave a trail. A clear reconstruction file is much better than unexplained gaps.
How this links to year end
Good records make year end calmer because your accountant can spend time on judgement rather than chasing basics. The year-end pack should already explain:
- what income was earned;
- what costs were business costs;
- what was unpaid at the year end;
- what cash belongs to tax, VAT or payroll;
- what the director or owner took out;
- which transactions need tax judgement.
That is also where clean records become useful to the founder. They show tax cash, profit, runway, margins and the cost of decisions. The legal rule gets you compliant; the better recordkeeping routine gives you numbers you can use.
For a practical rhythm, pair this guide with the small company recordkeeping routine and the limited company year-end checklist.
Frequently asked questions
How long do UK businesses need to keep accounting records? Limited companies usually keep accounting records for 6 years from the end of the company financial year. Sole traders and partnerships usually keep records for at least 5 years after the 31 January Self Assessment filing deadline. VAT records are usually kept for at least 6 years, and PAYE records for 3 years from the end of the tax year.
Is a bank statement enough for HMRC? A bank statement shows that money moved, but it may not prove the business purpose, VAT treatment or tax deductibility. Keep the invoice, receipt, contract or note that explains the transaction.
Can accounting records be digital only? In many cases, reliable digital copies are the cleanest way to keep records. VAT and MTD rules can require digital records and compatible software, so check the specific obligation before relying on a paper-only or spreadsheet-only process.
Do I need to send records to HMRC with my tax return? Usually no. You keep the records so the return can be prepared and so HMRC can check the figures if asked.
What should I do if records are lost? Recreate what you can from banks, suppliers, customers, platforms and payroll or accounting software. Tell HMRC where required, and make clear if figures are estimated or provisional.
Work with us
If your records are good enough to file from but not good enough to run the business from, book a call with Carr Accounting Studio. We help founders build a recordkeeping routine that supports the tax return, the accounts and the decisions you need to make next.
General information, not advice. UK rules, thresholds and software routes can change, and your situation may differ. Written by David Carr, chartered accountant and founder of Carr Accounting Studio.