HMRC Small-Business Investigations: Is Your Business Ready?

HMRC is increasing the resources devoted to tax compliance and small-business evasion. Its latest quarterly performance report confirms new compliance staff, a dedicated team of 350 criminal investigators and unannounced visits to some high-street business premises. For legitimate businesses, the practical response is not panic — it is making sure that the records tell a consistent story.

The HMRC performance update for April to June 2026 was published on 13 August 2026. Here is what owner-managed businesses should know and what they can check now.

What HMRC’s latest report says

• More than 250 additional compliance staff joined HMRC between April and June 2026, taking the number of new compliance colleagues recruited since Autumn Budget 2024 to more than 2,400.
• Government funding supports the recruitment and training of 5,500 new compliance caseworkers, alongside lawyers, analysts and policy specialists.
• HMRC criminal investigations produced 82 positive charging decisions and 63 prosecutions during the quarter.
• A new team of 350 criminal investigators has been recruited to tackle evasion by small businesses.
• HMRC says it worked with other public bodies to make unannounced visits to a variety of high-street business premises.
• HMRC generated more than £50 billion of compliance yield in 2025–26 for the first time.

These figures do not mean that ordinary, compliant businesses are being treated as criminals. They do show that HMRC is investing in people, data and enforcement capacity, with a stated focus on serious non-compliance.

Which business records should agree?

For a retail, hospitality or other high-volume business, sales data often exists in several systems. Differences can be entirely innocent — for example, timing differences, refunds or settlement fees — but unexplained gaps can attract questions.

A sensible records review should compare:

• till and EPOS reports with recorded sales;
• card-processor and merchant-acquirer statements with bank receipts;
• delivery-platform or online-marketplace reports with the sales ledger;
• cash takings and deposits with cash-book entries;
• VAT returns with management accounts and annual accounts;
• payroll records and staffing levels with the way the business actually operates; and
• voids, discounts and refunds with supporting explanations and authorisation.

The aim is not to force every system to show an identical number on the same day. The aim is to understand, document and resolve material differences so the figures can be reconciled.

A practical compliance checklist

1. Keep records complete and current. Avoid leaving several months of bookkeeping to be reconstructed close to a deadline.
2. Reconcile bank and card accounts regularly. Investigate unmatched transactions and document the reason for genuine differences.
3. Retain source evidence. Keep invoices, statements, till reports, platform reports and payroll records in an organised system.
4. Review VAT logic. Check that sales classifications, rates and return totals remain consistent with the underlying records.
5. Separate business and personal spending. Clearly identify drawings, reimbursements and director-related transactions.
6. Act early when something does not reconcile. Correct genuine errors through the appropriate process and retain a clear audit trail.

What if HMRC contacts your business?

Do not ignore an HMRC letter, information request or visit. Check the identity of the officers, note any deadline or documents requested, preserve the relevant records and seek professional advice promptly. Avoid guessing where facts are uncertain; a careful, evidence-based response is usually more useful than a rushed or incomplete one.

An HMRC enquiry can range from a routine check to a more detailed investigation. The correct response depends on the notice, tax and period involved, so fact-specific advice matters.

How SKN can help

SKN Chartered Accountants provides practical, partner-led support to owner-managed businesses across the Midlands and beyond. We can help you strengthen your records, reconcile key systems, review tax filings and respond professionally if HMRC raises questions.

Explore our bookkeeping support and accounting and tax services, or speak to our team about a records health check.

Call 0121 551 7629 or request a consultation.

Official source

• GOV.UK: HMRC performance update 2026 to 2027 — quarter 1

Information checked against the official HMRC report on 15 August 2026. This article is general information and does not constitute tax or legal advice. Every enquiry and investigation is fact-specific.