US reader note. This page uses US English but discusses UK tax, VAT, CIS, or payment rules. Treat it as UK-focused educational content, not US legal, tax, or accounting advice. US requirements vary by federal, state, and local rules, so check with a qualified professional before applying anything to a US business.

What is the reverse charge?

The domestic reverse charge for building and construction services flips the normal VAT process on its head. Instead of the subcontractor charging VAT to the contractor and paying it over to HMRC, the contractor receives an invoice without VAT and accounts for it on their own VAT return.

The subcontractor still reports the net value of the supply on their VAT return, but they do not collect or pay over any VAT. The contractor records both the output tax and the input tax, which usually cancel each other out. The money never changes hands -- it stays as entries on the VAT return.

Why was the reverse charge introduced?

HMRC introduced the reverse charge on 1 March 2021 to tackle VAT fraud in the construction supply chain. The problem was straightforward: a subcontractor would charge VAT on their invoice, collect payment including the VAT, and then disappear without paying the VAT to HMRC. This is known as missing trader fraud, and it was costing the exchequer hundreds of millions of pounds every year.

By making the contractor responsible for accounting for the VAT, the opportunity for fraud disappears. The subcontractor never holds the VAT money, so there is nothing to run off with.

When does the reverse charge apply?

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

  • The supply is of construction services -- specifically, services that fall within the scope of the Construction Industry Scheme (CIS). This includes most building, repair, demolition, civil engineering, and installation work.
  • Both parties are VAT-registered -- the subcontractor and the contractor must both be registered for VAT in the UK.
  • The customer is not an end user -- the contractor receiving the supply must be making onward supplies of construction services. If they are the final consumer of the work (an end user), the reverse charge does not apply.

In practice, this means the reverse charge applies to most subcontractor-to-contractor transactions in the construction industry where CIS applies.

End user definition. An end user is a customer who does not make further supplies of the construction services you are providing to them. A homeowner hiring a builder is an end user. A main contractor hiring a subcontractor is not -- because the main contractor is supplying those construction services onward to their own client.

When the reverse charge does NOT apply

The reverse charge does not apply in several important situations. Getting this wrong means either charging VAT when you should not, or failing to charge it when you should. Both create problems.

  • Supplies to end users -- if your customer is the final consumer of the construction services (for example, a homeowner or a business having its own premises refurbished for its own use), you charge VAT as normal.
  • Work outside CIS -- if the services do not fall within the Construction Industry Scheme, the reverse charge does not apply. This includes professional services like architecture, surveying, and project management.
  • Either party is not VAT-registered -- if you or your customer are not registered for VAT, normal rules apply.
  • Supply of materials only -- if you are supplying building materials without any labor, the reverse charge does not apply. However, if materials are supplied as part of a construction service (which they usually are), the whole supply falls under the reverse charge.
  • Employment businesses supplying staff -- agencies supplying temporary construction workers under contracts of employment are excluded.
Check with your customer. If you are unsure whether your customer is an end user, ask them. They are required to tell you. Get their confirmation in writing -- an email is fine -- and keep it on file. This protects you if HMRC ever queries your treatment.

How invoicing changes under the reverse charge

This is where most subcontractors feel the change. Under normal VAT rules, you add 20% VAT to your net price and your customer pays the gross amount. Under the reverse charge, you do not add VAT. Your customer pays just the net amount.

Here is a simple example. You complete plastering work worth 2,000 pounds net:

  • Normal VAT invoice: 2,000 pounds plus 400 pounds VAT equals 2,400 pounds total. Customer pays 2,400 pounds. You pay the 400 pounds VAT to HMRC.
  • Reverse charge invoice: 2,000 pounds net. No VAT added. Customer pays 2,000 pounds. Customer accounts for the 400 pounds VAT on their own VAT return.

The key difference for your cash flow is that you receive less money per invoice. You are not collecting the VAT, so the payment is 20% smaller. However, you also do not have to pay that VAT to HMRC, so your actual profit is the same.

What to put on a reverse charge invoice

A reverse charge invoice must include all the usual VAT invoice details plus specific wording to make it clear that the reverse charge applies. Here is what you need:

  • Your business name and address
  • Your VAT registration number
  • A unique invoice number
  • The invoice date
  • Customer's name, address, and VAT number
  • A description of the construction services
  • The net value of the supply
  • The rate of VAT that applies -- usually 20%, but could be 5% for certain work
  • The amount of VAT -- shown for information but not added to the total
  • The reverse charge statement -- you must include the words: "Reverse charge: customer to account for VAT to HMRC"

The total on your invoice should be the net amount only. Do not add the VAT to the total. The VAT figure is shown on the invoice so that your customer knows how much to account for on their return, but they do not pay it to you.

The 5% rule for mixed supplies

Sometimes a single invoice covers both construction services (which fall under the reverse charge) and other supplies (which do not). For example, you might supply some construction work and also hire out equipment that is not within CIS scope.

HMRC applies a 5% threshold to handle this. If the non-construction element of your supply is 5% or less of the total value, the entire supply is treated as subject to the reverse charge. If it is more than 5%, you need to split the invoice and apply the reverse charge only to the construction services element.

In practice, most subcontractors find that their supplies are entirely construction services, so the 5% rule rarely comes into play. But if you regularly supply a mix of construction and non-construction services on the same invoice, it is worth understanding.

Common mistakes and how to avoid them

The reverse charge has been in force since 2021, but errors are still common. Here are the ones HMRC sees most often:

  • Charging VAT when the reverse charge should apply. This is the most common mistake. If your customer is CIS-registered, VAT-registered, and not an end user, you must use the reverse charge. Charging VAT in this situation means your customer cannot reclaim the input tax in the normal way, and HMRC may challenge both of you.
  • Forgetting the mandatory wording. Your invoice must include the statement about the customer accounting for VAT. Without it, HMRC may treat the invoice as a normal VAT invoice, which creates problems for your customer's VAT return.
  • Not checking end-user status. It is your responsibility to determine whether your customer is an end user. Do not assume. Ask the question, get it in writing, and keep the record.
  • Confusing the reverse charge with zero-rating. The reverse charge is not the same as zero-rated VAT. On a zero-rated supply, the VAT rate is 0%. On a reverse charge supply, the VAT rate is still 20% (or 5%) -- it is just accounted for by the customer instead of by you.
  • Cash flow surprises. Because you no longer collect VAT from your customer, your incoming payments are smaller. Some subcontractors who were used to holding VAT money before paying it over find their cash flow tighter. Plan for this, especially in the early months.
  • Getting the VAT return wrong. Under the reverse charge, you report the net value of your supplies in Box 6 of your VAT return, but there is no output VAT in Box 1 for these supplies. Make sure your accounting software handles this correctly.

How WOPA handles reverse charge invoicing

If you use WOPA to create invoices, you can tell WOPA that a job falls under the domestic reverse charge. WOPA will then format the invoice correctly: no VAT added to the total, the applicable VAT rate and amount shown for information, and the required reverse charge statement included automatically.

You do not need to remember the exact wording or worry about whether the layout is right. Just mention that the reverse charge applies when you describe the job in your WhatsApp message, and WOPA takes care of the rest. The PDF your customer receives will be compliant with HMRC requirements.

This is especially useful if you do a mix of reverse charge and normal VAT work -- some jobs for main contractors (reverse charge) and some directly for homeowners (normal VAT). WOPA handles both, so you do not have to switch between different invoice templates.

Join the waitlist to get US beta access when WOPA launches.

Important. This article is general information about the domestic reverse charge for construction services, not tax or legal advice. VAT rules are complex and your circumstances may vary. For specific questions about your VAT obligations, speak to your accountant or contact HMRC directly.