Input VAT: evidence to keep

Input VAT recovery depends on the nature of the purchase, its business use and adequate evidence, not simply a VAT figure entered in bookkeeping software. Review restrictions, partial exemption and private use before treating every purchase tax amount as recoverable.

Keep supplier invoices and explain how the purchase supports taxable business activity. Imports and other special transactions may require different evidence from an ordinary UK invoice.

Establish who received the supply

Check that the purchase was made by the relevant VAT-registered business and that the invoice identifies the transaction appropriately. A director paying personally, a group company arranging an order or an employee submitting a receipt can require clarification of the underlying supply. The payment route alone does not establish which business may recover the VAT.

HMRC's reclaiming guidance explains the need for relevant business purchases and supporting evidence, with restrictions and special cases requiring attention. ^[1] Keep the invoice linked to the order, business purpose and payment. Do not treat a tax amount entered manually into software as evidence that the supplier charged VAT correctly or that the recipient is entitled to reclaim it.

Review business and private use

Describe how the goods or services are used and identify any private or non-business element. Keep a supportable allocation where appropriate and review it when use changes. A generic label such as office costs may conceal a mixed-use purchase that needs a more specific assessment.

Ask the accountant about restricted categories, including relevant vehicle or entertainment costs, rather than assuming commercial usefulness establishes recovery. Use VAT and business entertaining for entertaining and keep the VAT conclusion separate from the direct-tax expense treatment. A cost can be recorded properly in the accounts while its VAT recovery follows a different analysis.

Distinguish taxable and exempt activities

Where the business makes exempt as well as taxable supplies, identify costs directly connected with each activity and shared overheads. Do not apply the taxable sales percentage mechanically to every invoice without assessing the relevant method and conditions. The purpose and use of the purchase need to remain visible in the supporting records.

Use Partial exemption: initial questions for partial exemption and retain the calculation supporting any restricted or adjusted recovery. If an asset or service changes use later, flag the event for review. The initial claim should not be treated as permanently settled where the applicable rules require later reconsideration or adjustment under the particular circumstances.

Obtain the evidence appropriate to the transaction

An ordinary UK purchase usually needs the relevant supplier invoice, while imports or other special arrangements can require different documentation. HMRC's VAT record-keeping notice addresses evidence and invoice requirements. ^[2] Keep customs and postponed-accounting records distinguishable from a courier's service charge or an overseas supplier's commercial invoice.

If a document is missing or inconsistent, request clarification through the supplier's established contact route. Preserve the original and any corrected version. Do not add a VAT number, alter the recipient or create a replacement in the supplier's name simply to complete the claim file. Explain the available evidence to the adviser and assess the proper treatment transparently.

Check timing and duplication

Confirm the period in which the proposed recovery belongs under the business's applicable arrangement. Match invoices, credits and payments so the same purchase is not claimed through both an invoice import and a bank-feed entry. A refund or supplier credit should be linked to the original transaction and assessed for the relevant adjustment.

Review pre-registration claims separately from ordinary current purchases. Use Preparing your first VAT return for the first-return context and keep approved opening schedules with the VAT account. A large historic purchase may need evidence of continuing use and eligibility, not merely proof that VAT appeared on an old invoice.

For VAT return preparation, supply a purchase schedule, supporting invoices and a list of uncertain recipient, use or timing questions. Ask for specific conclusions on material items and the evidence needed to support future claims. Keep the decisions close to the relevant transactions so a replacement bookkeeper does not reverse a considered treatment by applying a default code.

Before approval, compare the claim with the business's known purchasing pattern. An unusual increase may be explained by equipment or stock, but it could also reveal duplicate imports or a supplier coding change. Investigate the cause rather than relying only on the software's arithmetic. Retain the reconciliation and unresolved follow-up tasks with the submitted return so the reported recovery remains understandable after the period has closed. Review supplier credits received after preparation and identify whether they affect the proposed claim, rather than leaving them outside the records simply because the invoice was checked earlier.

Illustrative scenario

A business buys equipment used for both taxable and exempt work. The bookkeeper flags the purchase for the agreed recovery calculation instead of automatically claiming all VAT shown.

Preparation checklist

• Retain valid evidence
• Identify business use
• Check recovery restrictions
• Flag exempt or mixed activity