Domestic Reverse Charge VAT for Construction — Practical Guide

The domestic reverse charge for VAT in the construction sector has been in force since March 2021, but it still catches people out. Whether you are a subcontractor trying to work out how to invoice correctly or a contractor figuring out how to account for the VAT you now have to deal with on the other end, the rules can feel unnecessarily complicated. In this guide, we will strip away the jargon and explain exactly how the reverse charge works, who it applies to, and how to get your invoicing and VAT returns right.

What Is the Domestic Reverse Charge?

In a normal VAT transaction, the supplier charges VAT, collects it from the customer, and pays it to HMRC. The customer then reclaims the VAT as input tax on their own VAT return. Simple enough.

The domestic reverse charge flips this around for certain construction services. Instead of the subcontractor (supplier) charging and collecting VAT, the contractor (customer) accounts for the VAT themselves. The subcontractor issues an invoice without adding VAT, and the contractor declares both the output tax and the input tax on their own VAT return.

The practical effect is that the VAT never actually changes hands between the two businesses. The contractor puts the same amount in box 1 (output tax) and box 4 (input tax) of their VAT return, so it washes through to zero. Meanwhile, the subcontractor does not collect any VAT and does not need to pay it over to HMRC.

The whole purpose of this is to combat fraud. In the old system, some subcontractors would charge VAT, collect it from the contractor, and then disappear without paying it to HMRC. The reverse charge removes that opportunity entirely because the VAT never leaves the contractor's control.

Who Does the Reverse Charge Apply To?

The reverse charge applies when all of the following conditions are met:

• The supply is of construction services that fall within the scope of CIS (the Construction Industry Scheme)
• Both the supplier and the customer are VAT-registered
• The customer is also registered for CIS (or should be)
• The supply is reported under CIS
• The customer is not an end user or intermediary supplier

That last condition is crucial. An end user is a business that receives construction services for its own use and does not supply construction services onwards as part of the same project. A property developer who builds houses to sell, for example, could be an end user if they do not make onward supplies of construction services. A main contractor who subcontracts work is not an end user — the reverse charge applies to payments they make to subcontractors.

An intermediary supplier is connected to the end user and is the last person in the supply chain who supplies construction services. Intermediary suppliers are also excluded from the reverse charge.

In practice, the reverse charge applies throughout the construction supply chain except at the very end, where the final customer (end user) pays VAT in the normal way. This means most subcontractor-to-contractor transactions within a typical construction project will be subject to the reverse charge.

If you are unsure whether the reverse charge applies to a particular transaction, the key question is: does the customer make onward supplies of construction services within CIS? If yes, reverse charge applies. If no, normal VAT rules apply.

How to Invoice Under the Reverse Charge

When the reverse charge applies, the subcontractor's invoice must clearly show that the customer is responsible for accounting for the VAT. Here is what your invoice should include:

• Your business name and VAT registration number
• The customer's name and VAT registration number
• A description of the construction services provided
• The net value of the services (excluding VAT)
• A clear statement that the reverse charge applies, such as: "Domestic reverse charge: customer to account for the VAT to HMRC"
• The rate of VAT that would normally apply (usually 20%, but 5% for some services)

You must not charge VAT on the invoice. The total payable is the net amount only. If you also have materials to include, those are treated normally — the reverse charge only applies to the construction services element.

Here is a simplified example:

| Description | Amount | |---|---| | Labour — first fix plumbing | £4,000 | | Materials supplied | £1,200 | | Subtotal | £5,200 | | VAT on materials at 20% | £240 | | Reverse charge: customer to account for VAT on labour at 20% (£800) | £0 | | Total payable | £5,440 |

In this example, the plumber charges VAT on the materials in the normal way but applies the reverse charge to the labour element. The contractor pays £5,440 but must account for £800 of output tax on their own VAT return, with a corresponding £800 input tax claim.

Using software like Accounted to generate your invoices helps ensure the reverse charge wording and calculations are handled correctly, reducing the risk of errors that could cause problems during a VAT inspection.

How It Affects Your VAT Return

For subcontractors, the reverse charge means you do not include the VAT on reverse charge supplies in your box 1 (output tax) figure. You still include the net value of the supply in box 6 (total value of sales). Your input tax claims for your own business expenses work exactly as before.

The practical impact is that your VAT liability is likely to be lower — you might even find yourself in a regular repayment position if most of your sales are reverse charge but you are still reclaiming input VAT on your purchases, materials, and overheads. This is worth bearing in mind for cash flow planning, because instead of collecting VAT from customers and holding it until your VAT return is due, you will not be collecting that VAT at all.

For contractors, you need to account for the reverse charge VAT in both box 1 (output tax) and box 4 (input tax) of your return. You also include the net value in box 6 (total value of sales) if you are the end user, or box 7 (total value of purchases). The net effect on your VAT bill is zero, but you must still report it correctly.

For a broader look at how the reverse charge interacts with CIS obligations, our construction reverse charge guide covers the topic from a different angle.

Common Mistakes and How to Avoid Them

Applying the reverse charge when the customer is an end user. This is the most common error. If your customer is a property owner, landlord, or business that does not make onward supplies of construction services, normal VAT rules apply. It is good practice to ask the customer to confirm their status in writing before you raise the invoice.

Forgetting the mandatory wording on invoices. HMRC requires a specific statement that the reverse charge applies. Without it, the invoice does not comply with the regulations, and both parties could face issues during a compliance check.

Charging CIS deductions on the full amount including VAT. Under the reverse charge, there is no VAT on the invoice (for the services element), so the CIS deduction is calculated on the net labour amount. Under normal VAT rules (for end users), CIS is still calculated on the net amount before VAT.

Not adjusting cash flow expectations. Subcontractors who are used to collecting VAT and holding it until their return is due will notice a significant drop in the cash coming in. Plan for this — the money was never yours to keep, but it did help with cash flow.

Using the wrong VAT rate. Most construction services are standard-rated at 20%, but some — such as certain renovations of residential properties — qualify for the reduced rate of 5%. The reverse charge still applies at the correct rate.

When the Reverse Charge Does Not Apply

The reverse charge does not apply to services that are excluded from CIS, even if they are performed on a construction site. This includes things like architecture, surveying, and professional consultancy. It also does not apply to supplies of materials on their own (without any labour element), or to employment agency supplies of construction workers.

If you do a mix of CIS-reportable and non-CIS work, you need to work out which parts of your invoice fall under the reverse charge and which follow normal VAT rules. This can be complex, so getting your bookkeeping set up properly from the start saves headaches later.

Penny, the AI bookkeeping assistant within Accounted, can help you categorise transactions correctly and flag any that might need the reverse charge treatment, making your quarterly VAT returns much more straightforward.

Related Reading

• CIS Compliance Checks — What HMRC Looks For

• Running a Construction Business — From Sole Trader to Contractor

• Kitchen Fitters — CIS, Expenses, and Tax Guide

• CIS Compliance Checks: What HMRC Looks For

• Construction Reverse Charge — Detailed Guide

• CIS Registration Guide

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Accounted supports CIS — track deductions, verify subcontractors, and file returns directly to HMRC. See CIS support →