The construction VAT reverse charge and RCT, explained for sole traders

VAT is usually simple: you add it to your price, the customer pays you, you pass it to Revenue. The reverse charge breaks that chain for construction work between businesses. Instead of you collecting the VAT, the principal contractor calculates it and pays it directly to the Revenue Commissioners on their own return. You invoice without VAT — the tax does not pass through you at all.

The mechanism has different names in different countries — the construction VAT reverse charge tied to Relevant Contracts Tax (RCT) in Ireland, the Domestic Reverse Charge in the UK, equivalents across the EU under the same Article 199 logic — but the principle is identical. In Ireland it applies to construction services between a subcontractor and a principal contractor where RCT applies. This guide explains the shape of it; always confirm the current rule with Revenue or your accountant before you rely on it.

When the reverse charge applies

Generally, three things have to be true at the same time:

1. The work is a construction operation to which RCT applies — construction, alteration, repair, demolition and the materials supplied with them (haulage for hire is the notable exclusion).
2. You are supplying a principal contractor — the relationship is a subcontractor invoicing the principal, not you working for the end client direct.
3. Both of you are operating within the RCT system for the contract.

Flip the relationship and you are usually back to charging VAT the normal way. Work straight for a private homeowner? Normal VAT. Not a principal-and-subcontractor construction contract? Normal VAT. The reverse charge is specifically for the business-to-business middle of the construction chain, where RCT already governs the payments.

What goes on the invoice

Here Ireland differs from some other countries, so it is worth getting exact. Your invoice carries all the usual VAT-invoice information except the VAT rate and the VAT amount — you do not charge VAT and you do not show it. What you must add instead is a clear statement that the principal accounts for it.

The required wording is specific: "VAT on this supply to be accounted for by the Principal Contractor." Vague is dangerous here. An auditor wants to see that both you and the principal understood who was responsible. A blank space where that line should be is the single most common reason these invoices get queried.

Invoice with no VAT, leave the rate off, and state in plain words that the principal accounts for it — not you. That one sentence is the difference between a clean invoice and an audit note.

The mistakes that cost money

Charging VAT you should not have

If you add VAT to a reverse-charge job and the principal pays it, they cannot reclaim it the normal way — it was never yours to charge. You end up issuing a credit note and reissuing the invoice, and you have annoyed the one customer who gives you steady work. Decide the treatment *before* you raise the invoice, not after.

Mixing construction and professional services

The construction services in a reverse-charge job are at the 13.5% rate, but any professional services billed on the same invoice — design or consultancy, say — are standard-rated at 23% and are not covered by the reverse charge. Split them so the reverse charge applies cleanly to the construction work and the professional element is invoiced the normal way.

Treating every job as reverse charge

The same skills can be a reverse-charge job for a principal one week and a normal VAT job for a private homeowner the next. The trigger is the principal-and-subcontractor RCT relationship, not the type of work. Judge it per contract, and keep the RCT details on file.

How to keep it boring

Boring is the goal with VAT. The way you get there is to let the tool decide the treatment from the facts you already have — whether the customer is a principal, whether RCT applies, the rate on the work — instead of remembering a rule on a wet Friday afternoon. MarginTap stamps the reverse-charge wording automatically when the job qualifies, invoices without the VAT, and keeps the quote, invoice and payment record together so an RCT return has something to stand on.

[ See how MarginTap handles construction VAT → ]

None of this is a substitute for advice from your own accountant or Revenue — rules change, thresholds move, and your situation may have a wrinkle this guide does not cover. But if you understand when the reverse charge applies and never leave that line off the invoice, you have avoided the two mistakes that catch most sole traders.

Next, see how to quote a job without underpricing yourself — because the cleanest VAT treatment in the world will not save a job you priced too low.