How to prepare for a VAT inspection

A VAT inspection from HMRC can feel daunting, particularly if it’s your first. In reality, these visits are routine. With the right preparation, the process is usually far more manageable than expected.

The key is simple: your records and processes should clearly support the figures you’ve reported.

Why HMRC carries out VAT inspections

HMRC carries out VAT inspections to ensure businesses are applying VAT correctly. Some are random, but many are triggered by patterns in your returns.

In practice, that often means HMRC has spotted something worth a closer look. Perhaps fluctuations between periods, repayment claims, or changes in trading activity. That doesn’t necessarily indicate a problem, but it does mean your figures will need to stand up to scrutiny.

What happens during a VAT inspection

Most inspections are arranged in advance and may take place on-site or remotely. The officer will typically focus on recent VAT returns and work through them in detail.

This usually involves reviewing selected transactions, checking how VAT has been applied, and understanding how your internal processes work. In many cases, the conversation moves beyond the numbers and into how VAT is managed day to day –  who is responsible, what checks are in place, and how errors are identified.

What HMRC will want to see

At its core, a VAT inspection is about evidence. HMRC will expect to see a clear audit trail from your VAT returns back to underlying records.

That means having complete invoices, accurate VAT account workings, and supporting documentation readily available. For businesses trading internationally, import and export records will also come into focus. Increasingly, HMRC will also look at whether your digital records meet Making Tax Digital requirements.

When records are well organised, inspections tend to move quickly. When they are not, the process becomes slower and more detailed.

Where issues commonly arise

In most cases, VAT inspections don’t uncover major errors. They highlight small issues that have built up over time.

This might include VAT being applied inconsistently, particularly where supplies are not straightforward, or mistakes in how international transactions are handled. Input VAT is another common area, especially where claims are made on costs that are partly non-business. Partial exemption is also frequently missed or incorrectly applied.

Individually, these issues may seem minor. Over several periods, they can become more significant.

Preparing in advance

If you’ve been notified of an inspection, it’s worth stepping back and reviewing your position before HMRC does.

Focus on whether your recent VAT returns make sense, whether the supporting documentation is complete, and whether VAT has been applied consistently in higher-risk areas. It’s also worth checking that your digital records align with MTD requirements, particularly if your processes involve manual adjustments.

The aim isn’t to rework everything. It’s to identify anything that might prompt questions and be ready to explain it.

A more proactive approach

The easiest VAT inspections are the ones that confirm what you already know…that your processes are working.

That typically comes down to having clear ownership of VAT, consistent record keeping, and taking time to review things periodically, especially as the business changes.

Handled this way, a VAT inspection becomes far less of a disruption… and more of a routine check that everything is in order.