The UK’s construction VAT reverse charge: cash flow issues
The introduction of the UK domestic reverse charge for construction services marked a significant change in how VAT is accounted for within the construction industry. Designed to combat VAT fraud in labour supply chains. The reverse charge shifted the responsibility for accounting for VAT from the supplier to the customer. While effective from a compliance perspective, the change has created notable cash flow challenges for many subcontractors and construction businesses. They are usually entitle to reclaim the equivalent amount from HMRC. When submitting their VAT return. However, this process has created an opportunity for fraudulent companies to abuse the system by failing to pay the additional VAT over to HMRC.
What is the construction VAT reverse charge?
Under the domestic reverse charge, VAT-registered subcontractors supplying certain construction services to VAT-registered contractors no longer charge VAT on their invoices. Instead, the customer accounts for both the output and input VAT through their own VAT return. The reverse charge generally applies to services covered by the Construction Industry Scheme (CIS). Where both parties are VAT registered and the customer is not an end user.
Why was it introduced?
The measure was introduced by HM Revenue & Customs to tackle missing trader fraud within the construction sector. Previously, some businesses collected VAT from customers but failed to pay it to the tax authorities. By moving the VAT accounting obligation to the customer, opportunities for this type of fraud are significantly reduced.
The cash flow impact on subcontractors
Before the reverse charge, subcontractors typically charged VAT on invoices and held that VAT until it became payable to HMRC. Although the VAT was not theirs to keep. It often provided a short-term working capital benefit.
Under the reverse charge:
- No VAT is collected from customers.
- Cash inflows from invoices are lower.
- Businesses lose access to temporary VAT-related working capital.
- Working capital management becomes more important.
For subcontractors operating on tight margins, the reduction in available cash can affect day-to-day operations, payroll, equipment purchases, and growth plans.
How will the VAT reverse charge work?
The reverse charge will apply to the whole construction supply chain. Up to the point where the customer receiving the supply is no longer a business. That makes supplies of construction services the end user. There are some limited exceptions for certain intermediaries. The only party in the construction supply chain. Who will charge VAT in the normal way will the main contractor, collecting it from the end user or client and paying it over to HMRC.
Why is this change happening?
The reverse charge aims to combat construction sector fraud. Where suppliers do not account to HMRC for VAT. They have charged to their customers. The new reverse charge means that instead of suppliers collecting cash from their customers in respect of VAT and being liable to pay the VAT to HMRC. Customers will pay the net of VAT amount to the supplier and account for the VAT on their own VAT return. The VAT liability itself is not changing. Only the way it is accounts for.
Practical steps to reduce cash flow pressure
Construction businesses can take several measures to mitigate the impact:
Review cash flow forecasting
Regular forecasting helps identify periods where cash reserves may be under pressure and allows businesses to plan financing requirements in advance.
Consider monthly VAT returns
Submitting monthly rather than quarterly VAT returns may accelerate VAT recovery and improve liquidity where regular VAT repayments arise.
Strengthen working capital management
Improving debtor collection procedures, negotiating supplier payment terms, and closely monitoring project profitability can help offset the loss of VAT-related cash flow.
Verify reverse charge treatment
Incorrect application of the reverse charge can lead to compliance issues and potential disputes. Businesses should ensure staff understand when the reverse charge applies and when exceptions, such as end-user status, may apply.
Moreover, reverse charge VAT is not the solution. A mandatory licensing scheme for UK construction businesses would tackle the root cause of this problem by introducing a minimum barrier to entry. As specialist CIS business accountants, contact us,


