Free tool

VAT reverse charge checker for construction

The reverse charge applies when both businesses are registered for VAT in the UK, the work is standard or reduced rated and reported within CIS, the supplier is not an employment business, and the customer has not confirmed in writing that it is an end user or intermediary supplier.

Free, with no sign-up. Everything is worked out in your browser: nothing you type is sent to us or stored. A guide, not tax advice. Based on GOV.UK guidance checked on 31 October 2026. Your customer's written confirmation of end user status is what counts, not an assumption.

Does the reverse charge apply to this invoice?

Answer in order. The first answer that settles it gives the result.

1. Is the business doing the work registered for VAT in the UK?
2. Is the customer registered for VAT in the UK?
3. Is it construction work reported within the Construction Industry Scheme?

For example building, altering, repairing or demolishing; installing heating, lighting, ventilation, power, drainage, water or fire protection systems; site clearance and scaffolding. On their own, these are not: architects and surveyors, making or delivering materials, signs, seating, blinds and shutters, and security systems.

4. Is the work zero-rated, such as building a new home?

Standard-rated items that are part of a zero-rated supply are outside the reverse charge too.

5. Is the supplier an employment business supplying workers?
6. Has the customer told the supplier in writing that it is an end user or intermediary supplier?

Being an end user is optional, and it only counts in writing. The supplier should not assume it.

7. Is the reverse charge part 5% or less of the whole contract, and did both sides agree at the start to disregard it?

Worked out on the whole contract value, never invoice by invoice, and not where the main part of the work is zero-rated.

Keep going.

What the reverse charge changes

The supplier does not charge VAT on the invoice. The customer records the VAT on its own VAT return and reclaims it in the usual way. The invoice still says how much VAT is due under the reverse charge.

On an invoice of £5,000 at 20%, the VAT due under the reverse charge is £1,000. The supplier shows it on the invoice but does not charge it, and the customer accounts for it.

The invoice wording

GOV.UK gives this as an example: VAT Act 1994 Section 55A applies. Customer to pay the VAT to HMRC.

When it does not apply

Sales to a customer that is not VAT registered, zero-rated work, workers supplied by an employment business, and customers who have told you in writing that they are an end user or intermediary supplier. Services on their own such as architects', surveyors', signs, seating, blinds, shutters and security systems are outside it too.

Questions

Who pays the VAT under the reverse charge?

The customer. It records the VAT on its own VAT return and reclaims it in the usual way. The supplier's invoice shows the VAT due but does not charge it.

Does the reverse charge apply to materials?

Materials supplied with the work are part of one supply, so they are reverse charged with it. They should not be split out to avoid the reverse charge.

What is an end user?

A customer registered for VAT and CIS that does not sell the construction work on. It has to tell the supplier in writing, and the supplier then charges VAT in the normal way.

Where SUBR comes in

SUBR is AI software for UK contractors who send work out to subcontractors. Its AI reads your client quote, your office names each trade's share, and SUBR builds every scope with your costs, margin and client price left off it. Each subcontractor answers on their own link and sees only their own price.

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See it on a quote

A short call. We walk a dummy quote from PDF to jobs on site.