The National Federation of Roofing Contractors (NFRC) has issued a call for action across the construction sector as HMRC transitions from an "educational" phase to strict enforcement. Officials are ramping up checks, assessments, and penalties regarding VAT Domestic Reverse Charge (DRC) errors, signalling an end to previous leniency.

Understanding the DRC Mechanism

Introduced in March 2021 to combat VAT fraud, the DRC shifts the obligation to account for VAT from the supplier (subcontractor) to the customer (main contractor).

• The Subcontractor: Invoices without VAT and records only the net value.

• The Contractor: Accounts for both output and input VAT on their return.

When the Reverse Charge Applies

The DRC is mandatory when all the following conditions are met:

• Both supplier and customer are UK VAT-registered.

• The supply is standard-rated or reduced-rated.

• The work falls within the Construction Industry Scheme (CIS).

• The customer is registered for CIS.

• The customer has not confirmed "end-user" or "intermediary-supplier" status.

When the DRC Does Not Apply

• The customer is not VAT or CIS-registered.

• The customer has formally declared they are an end user or intermediary.

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• The supply is zero-rated (e.g., new-build housing).

• The supply is between connected landlords/tenants or within a VAT group.

8 Critical Pitfalls for Construction Firms

Even established firms struggle with the technicalities of the DRC. HMRC is currently focusing on these specific areas of non-compliance:

1. Payment Delays: Uncertainty over VAT treatment often stalls payments, particularly when CIS status is unclear or end-user declarations are missing.

2. Stricter Enforcement: HMRC is now issuing assessments for incorrectly charged VAT, along with interest and penalties.

3. CIS Classification Errors: Misclassifying an activity as being inside or outside the scope of CIS frequently leads to knock-on VAT errors.

4. Subcontractor Cash-Flow: Because VAT is no longer collected from customers, subcontractors have lost a "cash buffer," necessitating more robust financial planning.

5. Missing Written Confirmations: Without written end-user or intermediary statements, suppliers must apply the reverse charge.

6. The 5% Threshold: In "mixed supplies," the DRC usually applies to the whole invoice unless the DRC element is 5% or less of the total value.

7. Invoicing Weaknesses: Invoices must explicitly state that the reverse charge applies. Software that cannot flag DRC supplies often attracts HMRC scrutiny.

8. Labour-only vs. Employment Businesses: The DRC applies to labour-only subcontractors (responsible for the work outcome) but not to employment businesses that simply supply staff.

Practical Steps to Stay Compliant

To mitigate the risk of an HMRC audit or financial penalty, the NFRC recommends the following:

• Verify Status: Check customers’ VAT and CIS status before any invoicing occurs.

• Get it in Writing: Always obtain signed end-user or intermediary declarations.

• Update Contracts: Ensure terms clearly set out DRC responsibilities for both parties.

• Staff Training: Educate accounts and project teams on how to evidence DRC decisions.

• Audit Trails: Maintain a "decision-making trail" for every contract to show HMRC your rationale.

The DRC is now a permanent fixture of the construction landscape. With HMRC’s tolerance for "simple mistakes" dwindling, strong processes and clear communication are the best defence against assessments and disputes.