What Records Do Small Businesses Need to Keep for HMRC?
Keeping accurate business records is essential for every UK business. Good record keeping makes it easier to prepare accounts, complete tax returns, monitor cash flow and provide supporting information if HMRC asks questions about your figures.
At Thomas Nock Martin, we help businesses keep their financial affairs organised and understand their tax responsibilities. With Making Tax Digital (MTD) for Income Tax expanding digital record-keeping requirements from April 2026, having the right systems in place is increasingly important.
This guide explains the key business records HMRC may require and how long you should keep them.
What Business Records Should You Keep?
The exact records you need depend on your business structure and tax obligations. However, most businesses should keep clear evidence of their income and expenditure.
Important records can include:
- Sales invoices and income records.
- Purchase invoices and receipts.
- Business bank statements.
- Credit card statements.
- Payroll records.
- VAT records, where applicable.
- Loan and finance agreements.
- Records relating to business assets.
These documents support the figures included in your accounts and tax returns.
Keep Accurate Income and Expense Records
Businesses should maintain clear records of money coming in and going out.
Income records might include invoices, sales reports, bank deposits and payment processor statements. Expense records can include supplier invoices, receipts, travel costs, professional fees and other business expenditure.
Keeping supporting evidence is particularly important when claiming allowable business expenses.
At Thomas Nock Martin, we recommend updating records regularly rather than trying to reconstruct transactions at year-end. This makes bookkeeping more manageable and helps identify missing information sooner.
Reconcile Your Bank Accounts Regularly
Bank reconciliation involves comparing transactions in your accounting records with your bank statements.
Doing this regularly can help identify:
- Missing transactions.
- Duplicate entries.
- Incorrect amounts.
- Unexplained payments.
- Outstanding invoices.
Regular reconciliation also means your financial information is more reliable when it is time to prepare your year-end accounts.
How Long Should You Keep Business Records?
How long records must be retained depends on the type of business and tax involved.
For self-employed businesses, records generally need to be kept for at least five years after the relevant 31 January Self Assessment deadline.
For limited companies, accounting records generally need to be retained for six years from the end of the financial year they relate to. In some circumstances, records need to be kept for longer.
Keeping an organised digital archive can make these retention requirements much easier to manage.
Making Tax Digital and Business Records
Digital record keeping is becoming increasingly important.
From 6 April 2026, Making Tax Digital for Income Tax applies to qualifying sole traders and landlords with annual qualifying income above £50,000, unless an exemption applies.
Those affected must use compatible software to maintain digital records and submit quarterly updates to HMRC.
This makes 2026 an important time for businesses to review their bookkeeping systems and ensure they are prepared for digital reporting requirements.
Common Record-Keeping Mistakes
Poor record keeping can make accounts and tax returns unnecessarily difficult.
Common mistakes include:
- Mixing personal and business transactions.
- Losing invoices or receipts.
- Leaving bookkeeping until year-end.
- Failing to reconcile bank accounts.
- Keeping incomplete supporting documentation.
- Disposing of records too early.
A consistent bookkeeping process throughout the year can prevent many of these problems.
How Thomas Nock Martin Can Help
Accurate records provide the foundation for reliable accounts and tax reporting.
At Thomas Nock Martin, we help businesses understand their financial and tax obligations while ensuring their accounting information is organised effectively.
Professional support can help you prepare accurate accounts, identify missing information, meet tax deadlines and adapt to changing digital reporting requirements.
For businesses affected by Making Tax Digital, now is the time to ensure your systems and records are ready.
Speak to our tax team for professional support with your business records and tax obligations.
FAQs
What business records should I keep?
Businesses should generally keep records of income, expenses, invoices, receipts and bank transactions. VAT, payroll and asset records may also be required depending on the business.
How long should I keep tax records?
Self-employed businesses generally need to keep records for at least five years after the relevant Self Assessment deadline. Limited companies generally need to retain accounting records for six years from the end of the relevant financial year.
Can business records be stored digitally?
Yes. Business records can generally be stored digitally, provided they remain accurate, complete and accessible. Businesses subject to Making Tax Digital must meet the relevant digital record-keeping requirements.
What happens if my records are incomplete?
Incomplete records can make it harder to prepare accurate accounts and tax returns. If records are missing, they may need to be reconstructed from bank statements, invoices and other supporting evidence.
Can an accountant help with business records?
Yes. An accountant can help organise financial information, identify missing records and ensure the information needed for accounts and tax reporting is properly maintained. Thomas Nock Martin can also help businesses prepare for changing digital tax requirements.
