A Compliance Remediation Example for UK Firms

A VAT discrepancy rarely begins with one obviously incorrect figure. For e-commerce businesses, it can develop quietly through marketplace settlement reports, refunded orders, overseas sales and expense coding that no longer reflects how the business trades. This compliance remediation example shows how a UK online retailer can move from an identified VAT error to a documented correction and stronger financial control.

Compliance remediation example: correcting VAT errors

Consider a growing UK e-commerce retailer selling through its own website, Amazon and a social-commerce channel. The company is VAT-registered, files quarterly VAT Returns through Making Tax Digital-compatible software and has annual taxable turnover of £2.8 million.

During a month-end review, its finance team notices that VAT payable has fallen despite stable sales. A reconciliation of marketplace settlement statements to sales data shows two issues. First, some sales dispatched to UK customers had been posted through a zero-rated sales code after a new marketplace connector was introduced. Secondly, VAT on certain advertising and fulfilment costs had been claimed twice: once from supplier invoices and again through an automated settlement feed.

The initial position is uncomfortable but manageable. The business has not yet received an HMRC enquiry, its underlying records are available, and management acts promptly. That is the point at which remediation becomes a commercial process rather than an urgent attempt to patch a return.

Over the previous three VAT periods, the review identifies £18,600 of undeclared output VAT and £2,400 of input VAT claimed in error. The net underpayment is therefore £21,000, before considering any interest or penalty position. The company must establish the full facts before deciding how to correct the error and how to prevent it recurring.

Why the cause matters as much as the amount

A compliance issue is not resolved simply because the VAT balance is repaid. HMRC will consider the accuracy of the return, the size and nature of the error, how it arose, and the taxpayer's behaviour once it was identified. The business also needs confidence that its next return will not repeat the same mistake.

For an e-commerce operator, the root cause is often a combination of process and system design. A sales channel may have been mapped to the wrong tax code; refunds may have been recorded net of VAT when the original sale was gross; or marketplace fees may be treated inconsistently between accounting software and settlement reports. The numbers matter, but the transaction journey matters too.

In this example, the business documents that the problem followed a connector configuration change. It retains the original reports, identifies the affected orders and confirms that no sales were omitted from the accounting system. This creates an evidence trail that supports the correction and shows that directors took the issue seriously.

The remediation process in practice

The first stage is containment. The company pauses the automated VAT mapping for the affected marketplace channel and ensures all new transactions are posted to a review queue. This may create additional work for the finance team temporarily, but continuing to process incorrectly coded transactions would increase both the exposure and the cost of correction.

Next, the finance team defines the scope. It reconciles gross sales by channel to payment-provider reports, marketplace settlements, order-management records and the VAT return figures already submitted. It separately tests refunds, promotional discounts, shipping income, marketplace fees and returns. A broad review is preferable to correcting only the transactions already known to be wrong, particularly where a system change may have affected several data fields.

The correction route then needs to be assessed against the VAT error-correction rules in force at the time. Smaller net errors can often be adjusted through a subsequent VAT Return, subject to applicable limits and conditions. Larger errors, or matters that require formal disclosure, may need to be notified to HMRC using the relevant error-correction process. The figures should not be treated in isolation: the business must consider the net error, its taxable turnover, the periods affected and whether the circumstances warrant direct disclosure.

In this case, £21,000 is less than 1% of the retailer's £2.8 million turnover, but the directors should still obtain professional advice before simply adding an adjustment to the next return. The calculation must be correct, the explanation must be consistent with the records, and interest or penalties may still need consideration. Where an error was careless, prompt and unprompted disclosure can materially affect the outcome. Where it was deliberate, the position is more serious and should be handled with particular care.

Once the method is agreed, the business posts the VAT adjustment with a clear audit trail. The working papers show the gross sales affected, the output VAT due, the duplicated input VAT, the accounting periods involved and the correction made. The finance lead also records who reviewed and approved the work. This is not unnecessary administration. If HMRC asks questions later, clear contemporaneous records make it far easier to explain what happened and why the return was corrected.

The business should also review its accounts. A VAT error may affect the VAT control account, expense categories, management reporting and cash-flow forecasts. In this example, the £21,000 liability is recognised immediately so directors can see its impact on available cash rather than receiving an unpleasant surprise when the next VAT payment falls due. Accurate management information allows them to adjust purchasing or promotional plans with time to make a sensible decision.

Preventing the same error from returning

The lasting value of remediation comes from improving the controls around the process. For this retailer, the first change is to create a documented tax-code map for each sales channel, including UK sales, exports, refunds, fees and any transactions outside the scope of UK VAT. No connector setting can be amended without finance approval and a test against sample transactions.

The second change is a monthly reconciliation completed before the VAT Return is finalised. Sales reported by each marketplace and payment platform are compared to the accounting ledger, while VAT codes are reviewed for unusual movements. A sharp fall in VAT payable, an unexpected increase in zero-rated income or a duplicated fee category should trigger a question before submission, not after it.

The third change is ownership. Automation can reduce manual processing, but it does not remove accountability. A named member of the finance team should review the VAT return, while a director or senior adviser approves material adjustments. For a fast-growing business, that review may be provided by an outsourced finance function or fractional finance director rather than a full-time internal hire.

Finally, the retailer should retain a clear record of the incident, its financial impact and the revised controls. This supports future staff training and gives directors a practical reference if the business changes software, adds new marketplaces or expands internationally. It also helps distinguish a resolved historic error from a continuing weakness in the finance function.

When to seek specialist support

Professional support is particularly valuable where the business sells across borders, uses several marketplace platforms, has incomplete records or is concerned that the issue could involve more than one tax. VAT treatment for international e-commerce can depend on where goods are located, where they are supplied and which party is treated as the supplier. A quick correction without a full review can create a second problem.

The same principle applies beyond VAT. Compliance remediation may involve payroll reporting, Corporation Tax calculations, Companies House filings, anti-money laundering procedures or Making Tax Digital record keeping. In each case, the right response is evidence-led: identify the breach, assess the period and impact, correct it through the appropriate route, and strengthen the control that failed.

Fortis Accounting helps owner-managed businesses turn financial issues into a clear plan of action, with the records, tax treatment and management information needed to move forward with confidence. Acting early gives directors more options, protects the quality of their financial data and keeps attention where it belongs: on running a profitable, well-controlled business.