What Records Do I Need to Keep for HMRC? A Practical Guide for UK Businesses

One of the most frequently asked accounting questions by business owners is:

“What records do I need to keep for HMRC?”

Many people know they are required to keep “some records”, but far fewer understand what must be kept, how long records must be retained, and what happens if records are missing or incomplete. Poor record-keeping is one of the most common triggers for HMRC enquiries and penalties, even where the underlying tax position is broadly correct.

This article explains HMRC’s record-keeping requirements for UK businesses, why they matter, and how to stay compliant without creating unnecessary administrative burden.

Why record-keeping matters

Keeping proper records is not optional. It is a legal requirement, and HMRC expects businesses to maintain records that are sufficient to:

• show how income and expenses were calculated,
• support figures reported on tax returns, and
• allow HMRC to check the accuracy of those returns if required.

Even where tax has been paid correctly, HMRC can still impose penalties if records are inadequate. In serious cases, HMRC may estimate income and profits, often to the taxpayer’s disadvantage.

Good records also help businesses:

• understand profitability,
• manage cashflow,
• prepare accurate accounts, and
• make informed commercial decisions.

Who must keep records?

HMRC’s record-keeping requirements apply to:

• sole traders,
• partnerships,
• limited companies,
• landlords,
• trustees and personal representatives (with variations).

This article focuses primarily on sole traders, landlords and small companies, as these groups are most commonly affected by record-keeping issues.

What records must businesses keep?

At a minimum, HMRC expects businesses to keep records showing:

• income received, and
• expenses paid.

However, the level of detail required depends on the nature and size of the business.

Income records

Businesses must keep records of all income received, including:

• sales invoices issued,
• till rolls and daily takings records,
• online sales reports,
• bank statements showing receipts,
• cash income records,
• commission statements from platforms or agents.

For landlords, this includes:

• rental income received,
• advance payments,
• lease premiums (where applicable),
• income from overseas property.

Income should be recorded gross, before deducting expenses.

Expense records

Businesses must also keep evidence of expenses claimed, such as:

• purchase invoices,
• receipts,
• supplier statements,
• contracts and agreements,
• mileage logs (where applicable),
• bank and credit card statements.

For each expense, HMRC expects records to show:

• who the supplier was,
• the date of the expense,
• what was purchased, and
• the amount paid.

Simply having a bank statement showing a payment is often not sufficient on its own.

Special records for common expense types

Some expenses require additional evidence.

Motor expenses

Where vehicle costs are claimed, HMRC expects:

• mileage logs for business journeys,
• evidence of private versus business use,
• details of the vehicle used.

Estimated mileage or reconstructed logs are often challenged.

Use of home

For home-working claims, records should support:

• how the business proportion was calculated,
• consistency in approach year on year,
• justification for the claim.

HMRC frequently challenges excessive or poorly explained home-office claims.

Cash transactions

Businesses that deal in cash should keep:

• daily cash summaries,
• till records,
• cash books,
• explanations of any cash withdrawals.

Cash-heavy businesses are subject to higher scrutiny.

Digital records and Making Tax Digital

HMRC increasingly expects records to be kept digitally.

For VAT-registered businesses, digital record-keeping is already mandatory. For income tax, digital requirements are expanding under Making Tax Digital for Income Tax from April 2026 onwards.

Digital records typically include:

• date of transaction,
• amount,
• category,
• business purpose.

While scanned receipts and digital accounting software are acceptable, spreadsheets and manual systems may need to meet specific requirements depending on the tax regime involved.

How long must records be kept?

Record retention periods vary depending on the type of taxpayer.

Sole traders and landlords

Records must generally be kept for at least five years after the 31 January submission deadline for the relevant tax year.

In practice, this often means nearly six years.

Limited companies

Companies must keep accounting records for at least six years from the end of the accounting period.

This includes:

• accounting records,
• supporting documents,
• bank statements,
• contracts and agreements.

Why longer retention is sometimes advisable

Where HMRC opens an enquiry or investigation, it may request records going back many years, particularly where:

• deliberate behaviour is alleged, or
• offshore matters are involved.

Keeping records longer than the minimum period can be sensible in some cases.

What happens if records are missing?

Missing or incomplete records can have serious consequences.

HMRC may:

• disallow expense claims,
• estimate income or profits,
• impose penalties for failure to keep records, and
• extend enquiry time limits.

HMRC estimates are often unfavourable to the taxpayer and difficult to challenge without evidence.

Penalties for poor record-keeping

Penalties can apply where:

• records are inadequate,
• figures are inaccurate as a result, or
• HMRC considers that reasonable care has not been taken.

Penalties depend on:

• behaviour (careless, deliberate, concealed),
• size of the error,
• quality of disclosure.

Even where tax underpaid is small, penalties can still be significant.

Common record-keeping mistakes

HMRC frequently encounters the following issues:

• relying solely on bank statements,
• losing receipts,
• failing to separate personal and business spending,
• reconstructing figures years later,
• inconsistent record-keeping methods,
• incomplete mileage logs.

These mistakes are often unintentional but can still result in penalties.

Practical tips for staying compliant

Businesses can reduce risk by:

• using a separate business bank account,
• keeping records up to date throughout the year,
• scanning or photographing receipts,
• using accounting software appropriate to the business,
• keeping clear explanations for unusual transactions,
• retaining records for longer than the minimum where possible.

Good systems reduce stress, save time and lower professional fees.

Record-keeping for landlords

Landlords often underestimate record-keeping requirements.

They should keep:

• rental statements,
• letting agent reports,
• mortgage interest statements,
• insurance documents,
• repair invoices,
• records of periods of vacancy.

Poor landlord records are a frequent trigger for HMRC compliance checks.

Record-keeping and HMRC enquiries

During an enquiry, HMRC will typically ask for:

• underlying records supporting the tax return,
• explanations of unusual items,
• reconciliations between records and returns.

Where records are poor, HMRC is more likely to:

• extend the scope of the enquiry, and
• challenge other areas of the return.

Good records often result in quicker, less intrusive enquiries.

Key takeaway

Keeping proper records is not just an administrative chore—it is a legal requirement and a vital part of running a compliant and successful business.

HMRC expects records to be:

• complete,
• accurate,
• timely, and
• retained for the correct period.

Many tax problems arise not because businesses set out to do the wrong thing, but because record-keeping is treated as an afterthought.

How we can help

If you are unsure whether your records meet HMRC’s requirements, or if you want to improve your systems ahead of increased digital reporting, we can help you review your record-keeping, implement practical solutions and reduce the risk of HMRC challenges. Please contact us to discuss your circumstances.