How to Prepare for a VAT Inspection | SolutioRemote Accounting

A VAT inspection doesn't have to be stressful. If your records are accurate, your VAT treatment is consistent and you can explain your numbers, you're already doing most of the right things.

Receiving a letter or notice from HMRC about a VAT inspection can make even an organised business owner nervous.

The first reaction is often:

"What have we done wrong?"

But an HMRC VAT compliance check doesn't necessarily mean HMRC believes you've done something wrong.

HMRC carries out checks for a variety of reasons, including checking that VAT returns are accurate and that businesses are paying the correct amount of VAT.

The best time to prepare for a VAT inspection isn't when HMRC contacts you.

It's every month.

What is a VAT inspection?

HMRC may carry out a VAT compliance check to make sure your business is:

charging the correct amount of VAT
claiming the correct amount of input VAT
submitting accurate VAT returns
keeping appropriate records
applying the correct VAT treatment to transactions

HMRC may ask questions about particular transactions or review your records more broadly.

A compliance check can be conducted:

remotely
by telephone
by correspondence
or through a visit to your business premises

The precise process depends on the circumstances.

An inspection doesn't automatically mean you've done something wrong

This is worth emphasising.

Being selected for a VAT check does not automatically mean HMRC suspects fraud or deliberate wrongdoing.

HMRC may select a business because of:

risk indicators
unusual figures
changes in VAT returns
sector-specific issues
random selection
information available to HMRC

So don't panic.

Instead:

Get organised.

The first thing to do: don't ignore HMRC

If HMRC contacts you, read the communication carefully.

Check:

what they are asking for
the period being reviewed
which VAT returns are involved
what records they want
the deadline
who your HMRC contact is
whether they are requesting information or arranging a meeting

If you're represented by an accountant or tax agent, involve them early.

Don't wait until the deadline is approaching.

What records should you have?

A VAT-registered business needs appropriate records to support its VAT returns.

These can include:

sales invoices
purchase invoices
receipts
credit notes
bank records
VAT calculations
VAT account
import/export documentation where relevant
evidence supporting VAT treatment
records of adjustments
relevant correspondence

The exact records required depend on your business and VAT arrangements.

For most SMEs, good bookkeeping should make this relatively straightforward.

Your VAT return should reconcile to your accounting records

One of the first things I'd want to see as an accountant is:

Does the VAT return actually agree to the underlying bookkeeping?

For example, if your VAT return says:

Box 1: £20,000

Box 4: £8,000

you should be able to trace those figures back to the transactions in your accounting system.

If someone asks:

"Where did this £8,000 come from?"

you should be able to answer.

That's what good bookkeeping provides:

an audit trail.

VAT errors often start with bookkeeping

Many VAT problems aren't caused by deliberately incorrect returns.

They're caused by:

incorrect VAT codes
duplicate invoices
missing invoices
incorrect dates
personal expenses
incorrectly treated deposits
incorrect treatment of overseas transactions
incorrect treatment of exempt income
poor records

That's why VAT compliance starts before the VAT return is prepared.

Check your sales VAT treatment

One of the obvious areas HMRC may review is your sales.

Check:

Are you charging the correct VAT rate?

Depending on the goods or services, the correct treatment could be:

standard-rated
reduced-rated
zero-rated
exempt
outside the scope

These are not interchangeable.

Zero-rated isn't the same as exempt

This is a particularly important distinction.

Zero-rated

VAT is charged at:

But the sale is still within the VAT system.

Exempt

No VAT is charged, and different rules apply.

This distinction can affect:

VAT recovery
partial exemption
VAT calculations
registration and compliance

If you're unsure, check the specific VAT rules for the transaction.

Check your purchase VAT

HMRC may also examine input VAT.

Ask:

Do we have valid evidence for the VAT we're claiming?

For many purchases, this means having appropriate VAT invoices or other acceptable evidence.

Common problems include:

missing invoices
receipts without sufficient VAT information
personal expenses
incorrect VAT rates
VAT claimed on non-business expenditure
duplicate claims

If you can't support an input VAT claim, don't assume it is automatically recoverable.

Personal expenses are a common risk area

Business owners sometimes mix personal and business expenditure.

For example:

family purchases
personal meals
clothing
home costs
personal subscriptions
private travel

Just because something was paid from the business bank account doesn't make it a business expense.

For VAT purposes, you need to consider whether the expenditure qualifies for input tax recovery.

Don't forget mixed business and private use

Some expenses can have both business and private elements.

Examples can include:

vehicles
mobile phones
home costs
computers
accommodation

The VAT treatment can depend on the specific circumstances.

Don't simply claim 100% of the VAT because the asset is "used for the business".

VAT on cars can be particularly tricky

Cars have specific VAT rules.

Input VAT recovery may be restricted depending on:

how the car is used
whether it is available for private use
the type of vehicle
the nature of the business

Commercial vehicles and cars can have different treatment.

If you're making a significant vehicle purchase, check the VAT position before buying it, rather than after.

Entertainment and meals

Business owners frequently ask:

"Can I claim the VAT?"

The answer depends on the nature and circumstances of the expenditure.

Business entertainment, employee entertainment and subsistence aren't necessarily treated the same way.

Don't rely on the fact that something is recorded as a business expense in your accounts.

VAT recovery has its own rules.

Check your VAT scheme

Your VAT treatment will also depend on the scheme you're using.

For example:

Standard VAT Accounting
Cash Accounting Scheme
Flat Rate Scheme
Annual Accounting Scheme

Make sure your bookkeeping reflects the scheme correctly.

For example, under cash accounting, the timing of VAT recognition generally follows payment rather than simply invoice date.

Cash accounting can create confusion

Imagine you issue an invoice for:

£10,000 + VAT

but the customer doesn't pay for three months.

Under standard VAT accounting, the VAT may become due based on the tax point.

Under the Cash Accounting Scheme, VAT is generally accounted for when payment is received.

If your accounting software isn't configured correctly, your VAT return can be wrong even when your invoices themselves are correct.

Check your VAT return boxes

Before submitting a return, don't simply click:

Submit.

Review the numbers.

Look at:

Box 1

VAT due on sales and other outputs.

Box 2

VAT due in the UK on acquisitions of goods from EU member states, where applicable under the current rules.

Box 3

Total VAT due.

Box 4

VAT reclaimed in the period.

Box 5

Net VAT to pay or reclaim.

Boxes 6–9

Relevant net sales, purchases and related figures.

The precise boxes and treatment depend on your transactions.

The key point is:

Understand what the numbers represent.

Look for unusual movements

One of the simplest VAT checks is comparing periods.

For example:

	Q1	Q2	Q3
Sales	£100k	£105k	£103k
Output VAT	£20k	£21k	£20.6k
Input VAT	£8k	£9k	£18k

That £18,000 input VAT figure stands out.

Maybe it's completely legitimate.

Perhaps you bought £60,000 of equipment.

But you should be able to explain it.

If you can't explain significant movements, investigate them before HMRC does.

Large VAT refunds can attract attention

A large VAT repayment isn't automatically a problem.

For example, a business may legitimately have:

bought expensive equipment
incurred substantial startup costs
made significant zero-rated sales
experienced unusual timing

But if a repayment is significantly different from your normal pattern, make sure the supporting records are clear.

Overseas transactions need particular care

VAT treatment can become more complicated when your business deals with:

EU customers
EU suppliers
imports
exports
services supplied overseas
services purchased from overseas businesses

You may need to consider:

place of supply
reverse charge
import VAT
customs documentation
zero-rating
VAT registration requirements in other jurisdictions

Don't guess.

Overseas VAT rules can be surprisingly technical.

The reverse charge

The reverse charge is an area where mistakes can occur.

In certain circumstances, instead of the supplier charging you VAT, you account for the VAT yourself.

Depending on the transaction, you may:

declare output VAT
claim corresponding input VAT, subject to normal recovery rules

This can create a net nil effect for a fully taxable business.

But that doesn't mean the transaction can simply be ignored.

It still needs to be recorded correctly.

Construction businesses need extra care

If you're in the construction sector, the Domestic Reverse Charge for Construction can be particularly important.

This isn't the same as the general reverse charge rules.

If your business operates in construction, make sure you understand:

whether the service is within scope
whether the customer is VAT registered
whether the customer is the end user
how invoices should be issued
how the transaction should be recorded

Incorrect construction VAT treatment can create significant problems.

Keep evidence for unusual transactions

If something isn't obvious, keep the explanation.

For example:

Large equipment purchase

Keep:

invoice
payment evidence
description of business use
relevant correspondence

Overseas transaction

Keep:

supplier/customer details
invoices
delivery or service information
relevant VAT treatment

Large adjustment

Keep:

calculation
reason
supporting documents

The goal is simple:

Someone unfamiliar with the transaction should be able to understand why you treated it that way.

Don't make manual adjustments without documenting them

Accounting systems sometimes require VAT adjustments.

For example:

bad debt relief
partial exemption adjustments
capital goods scheme adjustments
errors from previous periods
reverse charge adjustments

Don't simply enter:

"VAT adjustment £4,500"

and move on.

Keep a calculation showing:

what the adjustment is, why it's required and how you calculated it.

What if you discover an error?

Don't panic.

Finding an error yourself is much better than ignoring it.

The correct approach depends on:

the nature of the error
the amount
the VAT period
whether the error is within the correction limits
whether a separate disclosure is required

HMRC has specific rules for correcting VAT errors.

If the error is significant or complicated, get professional advice rather than simply changing a future VAT return without checking the correct procedure.

Keep your digital records organised

For most VAT-registered businesses within Making Tax Digital requirements, digital record keeping is an important part of compliance.

Your records should be:

accurate

complete

accessible

supported by evidence

Cloud accounting can make this significantly easier.

For example, keeping invoices attached directly to transactions means you can trace:

VAT return → transaction → invoice

without searching through piles of paperwork.

Don't "tidy" the books just before an inspection

This is a mistake I've seen businesses make conceptually:

"HMRC is checking us, so let's clean everything up."

If your bookkeeping has problems, don't try to disguise them.

Instead:

identify the issue
understand what happened
correct it appropriately
retain the supporting evidence
disclose relevant information where required

Transparency is far better than trying to make historical records look artificially perfect.

What might HMRC ask for?

Depending on the check, HMRC may request things such as:

VAT returns
VAT account
sales invoices
purchase invoices
bank statements
bookkeeping records
accounting reports
calculations
explanations for unusual transactions
information about particular customers or suppliers

They may also ask questions about how your business operates.

For example:

"How do you decide which VAT code to use?"

That's not just a bookkeeping question.

It's a control question.

Be able to explain your VAT process

A good answer might be:

"All sales and purchase invoices are recorded in Xero. VAT codes are selected based on the nature of the transaction. Supporting invoices are attached to transactions. The VAT report is reviewed against the bookkeeping before each return is submitted."

That's a process.

Compare it with:

"My accountant does it."

That's much less reassuring.

Even if your accountant prepares the VAT return, you as the business owner remain responsible for ensuring the information you provide is accurate.

Your accountant should be able to see the evidence

If your accountant is filing your VAT return based on incomplete records, that's a problem.

They should be able to access:

invoices
receipts
bank transactions
VAT reports
relevant explanations

This is particularly important if your business has complex transactions.

A simple monthly VAT control process

You don't need a huge compliance department.

For most SMEs, a simple process can make a big difference.

Step 1

Reconcile the bank accounts.

Step 2

Review sales invoices.

Step 3

Review purchase invoices.

Step 4

Check unusual VAT codes.

Step 5

Review large transactions.

Step 6

Check overseas transactions.

Step 7

Review VAT report.

Step 8

Compare against previous periods.

Step 9

Investigate unusual movements.

Step 10

Submit only when the numbers make sense.

Your VAT inspection checklist

If HMRC contacts you, work through this list.

Records

☐ VAT returns available

☐ VAT account available

☐ Sales invoices organised

☐ Purchase invoices organised

☐ Bank reconciliations complete

☐ Credit notes retained

☐ Relevant import/export documents available

VAT treatment

☐ Sales VAT rates reviewed

☐ Purchase VAT reviewed

☐ Zero-rated transactions supported

☐ Exempt transactions identified

☐ Reverse charge transactions checked

☐ Overseas transactions reviewed

☐ Mixed-use expenses considered

Calculations

☐ VAT return reconciles to bookkeeping

☐ Large adjustments supported

☐ Unusual movements investigated

☐ Previous errors identified and dealt with

Processes

☐ VAT codes reviewed

☐ Supporting documents attached

☐ Digital records maintained

☐ Responsibilities clearly defined

What not to do

If HMRC announces a VAT inspection, avoid these mistakes:

❌ Ignore the letter

Deadlines matter.

❌ Panic

A compliance check doesn't automatically mean you've done anything wrong.

❌ Guess

If you're unsure about a VAT treatment, investigate it.

❌ Delete records

Never destroy relevant records because they're being reviewed.

❌ Make unsupported adjustments

Document your calculations.

❌ Blame the accounting software

Software applies the rules you configure.

❌ Assume your accountant is responsible for everything

The business remains responsible for the accuracy of its VAT affairs.

Prevention is better than preparation

The best VAT inspection strategy isn't preparing a giant folder after HMRC contacts you.

It's having a good process every month.

If your business already has:

reconciled accounts
organised invoices
consistent VAT coding
documented adjustments
regular reviews
clear audit trails

then a VAT inspection becomes much less intimidating.

You don't have to reconstruct six years of transactions overnight.

You simply show HMRC how your normal process works.

What if HMRC finds an error?

An error doesn't automatically mean penalties.

HMRC considers factors such as:

the nature of the error
whether it was careless or deliberate
whether you took reasonable care
whether you disclosed it
the circumstances surrounding the error

The consequences can therefore vary significantly.

If an error is identified, don't immediately assume the worst.

Understand:

What happened?

Why did it happen?

How significant is it?

What needs correcting?

Does HMRC require additional disclosure?

And importantly:

How do we prevent it happening again?

Build VAT controls into your business

VAT compliance shouldn't be something that happens four times a year.

It should be part of your normal financial processes.

For example:

Every transaction

→ correct VAT treatment

Every month

→ bookkeeping review

Every VAT period

→ VAT reconciliation

Every quarter

→ review unusual movements

Every year

→ review VAT processes and scheme suitability

This creates a much stronger control environment.

The Solutio approach

At SolutioAccounting, we believe VAT compliance should be proactive rather than reactive.

For SMEs, that means helping you understand:

what VAT you're charging
what VAT you're reclaiming
why you're reclaiming it
how transactions are recorded
where the risks are
whether your bookkeeping supports your VAT return

And if HMRC does contact you, having organised records and a clear audit trail means you're starting from a much stronger position.

The goal isn't simply:

"Get the VAT return submitted."

It's:

"Know that the VAT return is right."

The bottom line

A VAT inspection sounds intimidating.

But good records change the experience completely.

If you can show:

where the numbers came from,

why you treated transactions the way you did,

and the evidence supporting your VAT return,

you've already done much of the groundwork.

Don't wait for HMRC to ask for your records.

Build the records as you go.

Because VAT compliance isn't about preparing for an inspection.

It's about being prepared every day.

Need help getting your VAT records in order?

SolutioAccounting helps UK SMEs with VAT returns, bookkeeping, management accounts and practical financial support - with a focus on keeping your records accurate, organised and ready for scrutiny.

Good VAT compliance starts long before the VAT return is submitted.