Input VAT

Definition

Input VAT is the VAT charged to you by suppliers on business purchases. On the standard scheme you reclaim it against the output VAT you have charged, so you only pay HMRC the difference.

In plain terms

It is the offset that stops VAT stacking up at every stage of a supply chain. Every pound of input VAT you correctly reclaim is a pound off your bill.

Why it matters for your company

Keeping accurate records of input VAT directly lowers what you pay. Note the Flat Rate Scheme usually forgoes input-VAT reclaim.

In practice

For a UK limited company on the standard VAT scheme, input VAT shows up on every invoice from a VAT-registered supplier — stock, equipment, professional fees, software subscriptions. The finance function's job is simply to capture every valid VAT invoice, not just the receipt, since HMRC requires a proper VAT invoice as evidence before a claim can be reclaimed.

A common working pattern is to reconcile purchase invoices against the accounting system each period, flagging anything without a supplier VAT number or a full VAT breakdown before the return is filed. Directors who leave this until the return deadline often find gaps — a missing invoice, a personal expense wrongly claimed, or a purchase that falls under a partial-exemption or blocked category — that either delay the claim or trigger a query from HMRC.

Common pitfalls

The most frequent error is treating input VAT as automatically reclaimable. Certain categories are restricted or blocked outright (see input VAT restriction and blocked input VAT above), and mixing these into a standard claim is one of the more common triggers for HMRC scrutiny. A second pitfall is timing — claiming input VAT in the wrong period because an invoice was received late or logged against the wrong date can create mismatches that are awkward to unpick later.

A third is scheme confusion: a company that has opted for the Flat Rate Scheme to simplify its VAT accounting may not realise it has also given up the right to reclaim input VAT on most purchases, which changes the real cost of larger capital purchases considerably compared with the standard scheme.