VAT errors rarely start with the VAT return. They start when source data, tax codes and evidence do not agree. Platform fees can come from UK, EU or overseas suppliers, so the VAT code should not be guessed from the bank receipt. This guide focuses on platform fee VAT evidence so the VAT file stays reviewable before the return is submitted.

For wider context, use VAT schemes and returns . If the topic affects a filing deadline, software choice or tax treatment, confirm the live position before acting. The workflow below is designed to keep the evidence in one place so the owner, bookkeeper and accountant can all review the same record.

Official point to verify

VAT Notice 700/22 says VAT-registered businesses must keep VAT records digitally and file VAT returns using software that can communicate with HMRC through the API platform. Check the current wording in VAT Notice 700/22 on Making Tax Digital for VAT before making a binding filing, software or tax decision.

What to control

AreaControlWhy it matters
Supplier locationCheck who charged the feeVAT treatment depends on the supplier and service
Invoice evidenceDownload fee invoices where availablePayout summaries are not always VAT invoices
Reverse chargeFlag overseas service fees for reviewImported services can need special coding
SettlementReconcile fees to the payout reportGross sales and net receipts should bridge

Review routine

Review the VAT treatment before the return is locked. Match the source document, payout report or customs evidence to the VAT code, then keep a short explanation where judgement was used. If a transaction is unusual, flag it before the VAT submission rather than leaving it for the year-end file.

A useful review note should answer three questions: what source evidence was used, what judgement was applied, and who approved the treatment. Keep that note beside the transaction or period report rather than in a separate inbox.

Common mistakes

  • Posting net payout as sales after fees
  • Assuming every platform fee has UK VAT
  • Not downloading monthly fee invoices

The best prevention is a short, repeated checklist. If a control is too complicated to run every month or quarter, it will probably fail when the deadline is close.

How ReAI helps

ReAI keeps VAT coding close to the transaction and makes exception review visible to the accountant. That helps stop repeated coding errors from flowing through every return. For hands-on help with setup, see Accounting Assistance for Small Businesses .

Summary

Treat VAT on platform fees for ecommerce as a recurring accounting control, not a one-off admin task. Put the source data, review owner, exception list and submission evidence in the same system before the deadline arrives. That makes compliance work easier to check and much less dependent on memory.