VAT for Tradespeople: Registration, CIS, and the Reverse Charge Explained

Summary

VAT (Value Added Tax) is a 20% tax added to most goods and services in the UK. As a tradesperson, you will need to register for VAT once your business turnover crosses the £90,000 threshold -- or you can register voluntarily before that. Construction trades face additional complexity through the Construction Industry Scheme (CIS), which requires contractors to make tax deductions from subcontractor payments, and the domestic reverse charge, which flips the normal VAT rules so that the customer accounts for VAT instead of the supplier. Getting these right is essential to avoid penalties, and understanding the flat rate scheme and reduced VAT rates can save you real money.

Key Facts

• The VAT registration threshold is £90,000 (since 1 April 2024). The deregistration threshold is £88,000.
• The standard VAT rate is 20%. A reduced rate of 5% applies to certain energy-saving installations, and 0% (zero rate) applies to constructing new dwellings.
• CIS deduction rates: 20% for registered subcontractors, 30% for unregistered subcontractors, and 0% for those with gross payment status.
• The domestic reverse charge for construction has been in effect since 1 March 2021. It applies to supplies of construction services between VAT-registered businesses within the scope of CIS.
• Under the flat rate VAT scheme, you pay a fixed percentage of your gross turnover to HMRC instead of calculating input and output VAT on every transaction. The turnover limit to join is £150,000 (excluding VAT).
• Energy-saving material installations in homes are zero-rated until 31 March 2027, after which they revert to the 5% reduced rate.
• VAT is charged on both labour and materials at the same rate -- if the work is zero-rated, the materials you supply and install are also zero-rated.

Detailed Guidance

When do I need to register for VAT?

You must register for VAT if:

• Your taxable turnover in the past 12 months exceeded £90,000 (the "backward look"), or
• You expect your turnover to exceed £90,000 in the next 30 days alone (the "forward look").

What counts towards the threshold? All taxable supplies you make in the UK, including standard-rated, reduced-rated, and zero-rated sales. Exempt supplies (such as insurance or finance) do not count. If you do a mix of construction work and other work, all of it counts.

Monitoring your turnover: Check your rolling 12-month total at the end of every month. If you hit £90,000 at any point, you must register within 30 days. HMRC can backdate your registration and charge penalties if you fail to register on time.

Voluntary registration: You can register before reaching £90,000. This is worth considering if most of your customers are VAT-registered businesses (they can reclaim the VAT you charge), or if you want to reclaim VAT on tools, materials, and other business expenses. However, if your customers are mainly homeowners, registering early means your prices effectively go up by 20%.

Deregistration: If your turnover drops below £88,000, you can apply to deregister.

How does the Construction Industry Scheme (CIS) work?

CIS is a tax deduction scheme that covers most construction work in the UK. It does not apply to all trades -- it specifically covers construction operations including building, decorating, plumbing, heating, electrical work, roofing, and demolition. It does not cover architecture, surveying, or the manufacture of building components off-site.

Who is a contractor? Any business that pays subcontractors for construction work and spends more than £3 million on construction in a rolling 3-year period, or is itself a mainstream contractor or deemed contractor (such as a housing association or government department). In practice, if you hire subcontractors, you are likely a contractor under CIS.

Who is a subcontractor? Anyone who carries out construction work for a contractor.

Deduction rates:

These deductions are not an extra tax -- they are advance payments towards the subcontractor's income tax and National Insurance. The subcontractor gets credit for them when they file their tax return.

Gross payment status means you receive payments with no deductions. To qualify, you must pass three tests: a turnover test (at least £30,000 net construction turnover in the past 12 months for sole traders), a business test (you run a construction business in the UK through a bank account), and a compliance test (your tax returns and payments are up to date). From April 2024, VAT compliance was added to the compliance test.

Registration process: Subcontractors register online via the HMRC website. Contractors must register before taking on their first subcontractor. You must verify every subcontractor with HMRC before making the first payment to them.

What is the domestic reverse charge for construction?

The domestic reverse charge is the area that trips up most tradespeople. Under normal VAT rules, the supplier charges VAT and pays it to HMRC. The reverse charge flips this so the customer accounts for the VAT instead.

When does it apply? All three conditions must be met:

1. The supply is a construction service within the scope of CIS (the same services covered by CIS).
2. Both the supplier and the customer are VAT-registered (or required to be).
3. The customer is not an end user or intermediary supplier.

Who is an end user? A business that receives construction services for its own use and does not pass them on. For example, a restaurant chain having its premises refurbished is an end user. A homeowner is always outside the reverse charge because they are not VAT-registered. If you are working for an end user, they must tell you in writing that they are an end user, and you then charge VAT normally.

How it works in practice -- a real example:

Imagine you are a plumber (VAT-registered) subcontracted by a main contractor (also VAT-registered) to install heating in a new office building.

• Without the reverse charge (normal VAT): You would invoice the main contractor £10,000 + £2,000 VAT = £12,000. The main contractor pays you £12,000. You pay the £2,000 VAT to HMRC. The main contractor reclaims £2,000 from HMRC.

• With the reverse charge: You invoice £10,000 and state on your invoice: "Reverse charge: customer to account for VAT to HMRC." You do not add VAT. The main contractor pays you £10,000. The main contractor accounts for £2,000 output VAT and simultaneously claims £2,000 input VAT on their own VAT return -- these cancel each other out.

Your invoice must:

• Show your VAT number.
• Show the rate of VAT that applies (usually 20%).
• State clearly that the reverse charge applies. Recommended wording: "Reverse charge: Customer to pay the VAT to HMRC."
• Show the VAT amount for information, but not include it in the total payable.

Common mistakes:

• Charging VAT normally when the reverse charge should apply (or vice versa).

Using squote: squote automatically applies the correct VAT treatment to each line item on your quote, including flagging the domestic reverse charge for qualifying subcontractor supplies, so the right figures reach the customer without manual calculation.

• Forgetting to get written confirmation from end users that they are end users.
• Not adjusting your VAT return -- under the reverse charge, you still report the net value of supplies in Box 6 (value of sales) and the customer reports the VAT in Box 1 (output VAT due).
• Cash flow problems -- if you were previously collecting VAT and paying it to HMRC later, the reverse charge means you no longer receive that VAT amount, so your cash receipts drop by 20%. Plan for this.

When the reverse charge does NOT apply:

• Work for homeowners or private domestic customers (they are not VAT-registered).
• Work for an end user who has given you written notification.
• Supplies of materials only, with no labour element.
• Employment -- it only applies to subcontracting, not employees.

Should I use the flat rate VAT scheme?

The flat rate scheme simplifies VAT by letting you pay a fixed percentage of your gross (VAT-inclusive) turnover to HMRC. You do not reclaim input VAT on purchases (except for capital assets over £2,000 including VAT).

Flat rate percentages for construction:

Note: If you spend less than 2% of your gross turnover on goods (or less than £1,000 per year), you are classed as a limited cost trader and must use a flat rate of 16.5% regardless of your trade. This effectively eliminates the benefit.

Eligibility: Your VAT-taxable turnover must be £150,000 or less (excluding VAT) to join. You must leave if it exceeds £230,000 (including VAT).

Pros:

• Much simpler record-keeping -- no need to track VAT on every purchase.
• Can be profitable if your expenses are low (the difference between 20% charged and 9.5% paid is yours to keep).
• Predictable VAT bills.

Cons:

• You cannot reclaim VAT on purchases (tools, materials, van expenses).
• Not beneficial if you buy significant amounts of materials, as you lose the input VAT credit.
• The limited cost trader rule makes it pointless for very low-spend businesses.

When is it beneficial? The flat rate scheme tends to work well for labour-heavy trades with low material costs -- but check the numbers carefully. If you regularly buy expensive tools or materials, standard VAT accounting may save you more.

Important: The flat rate scheme cannot be used alongside the domestic reverse charge. If you receive reverse charge supplies, you must account for those outside the flat rate scheme using normal VAT rules.

What rate of VAT do I charge?

Most construction work is charged at the standard rate of 20%. However, there are important exceptions:

Energy-saving materials that qualify for the zero/reduced rate include: insulation, solar panels, heat pumps (air, ground, and water source), draught stripping, micro-CHP boilers, electrical battery storage, wood-fuelled boilers, and smart diverters.

The 60% rule for energy-saving installations: If the cost of the materials exceeds 60% of the total installation cost, only the labour element qualifies for the zero/reduced rate. The materials are then charged at the standard 20% rate. This catches high-value installations like solar panels where the panels themselves cost far more than the fitting.

Materials vs labour: When you supply and install materials as part of a construction service, the materials take the same VAT rate as the service. So if you are building a new house (zero-rated), the bricks, timber, and plumbing you install are also zero-rated. But if you supply materials without any installation service, they are standard-rated at 20%.

Frequently Asked Questions

Do I charge VAT on materials I buy for a job?

When you buy materials, you pay VAT to your supplier at 20%. If you are VAT-registered, you reclaim this as input VAT. When you invoice your customer, the materials are part of your overall supply and take the same VAT rate as the work itself. So for standard-rated repair work, you charge 20% on the full amount including materials. For zero-rated new builds, you charge 0% on everything including the materials you install.

I am a subcontractor working for a main contractor -- do I use the reverse charge?

Yes, if both of you are VAT-registered and the work falls within CIS scope. You issue an invoice showing the net amount only, with a note stating that the reverse charge applies. The main contractor accounts for the VAT. If the main contractor tells you in writing that they are an end user, you charge VAT normally instead.

Can I be registered for both CIS and VAT at the same time?

Yes, and most construction businesses are. CIS and VAT are separate obligations. CIS deductions relate to income tax, while VAT is a consumption tax. You need to manage both -- CIS deductions do not affect your VAT returns, and VAT does not affect your CIS deductions.

What happens if I go over the £90,000 threshold and do not register?

HMRC can backdate your registration to the date you should have registered. You will owe VAT on all taxable sales from that date, even if you did not charge your customers for it. You may also face a penalty. The lesson: monitor your rolling 12-month turnover closely.

I mainly work for homeowners. Is there any benefit to registering for VAT voluntarily?

Probably not. Homeowners cannot reclaim VAT, so registering means you either absorb the 20% cost or increase your prices. The main benefit of voluntary registration is reclaiming VAT on your business expenses (tools, van, fuel, materials). Run the numbers -- if your reclaimable input VAT is significantly less than 20% of your turnover, it is not worth it.

Regulations & Standards

• Value Added Tax Act 1994 -- the primary legislation governing VAT in the UK.

• Finance Act 2004, Part 3 -- the legislative basis for the Construction Industry Scheme.

• The Income Tax (Construction Industry Scheme) Regulations 2005 (SI 2005/2045) -- detailed CIS rules.

• VAT Notice 708 -- HMRC guidance on buildings and construction VAT.

• VAT Notice 708/6 -- HMRC guidance on energy-saving materials and heating equipment.

• VAT Notice 733 -- HMRC guidance on the flat rate scheme for small businesses.

• VAT Notice 735 -- HMRC guidance on the domestic reverse charge procedure.

• VAT registration thresholds -- GOV.UK

• Register for VAT -- GOV.UK

• Construction Industry Scheme guide (CIS 340) -- GOV.UK

• What is the Construction Industry Scheme -- GOV.UK

• VAT domestic reverse charge for building and construction services -- GOV.UK

• VAT reverse charge technical guide -- GOV.UK

• How to use the VAT reverse charge for construction -- GOV.UK

• VAT flat rate scheme -- GOV.UK

• Flat rate scheme for small businesses (VAT Notice 733) -- GOV.UK

• VAT for builders -- GOV.UK

• Buildings and construction (VAT Notice 708) -- GOV.UK

• Energy-saving materials and heating equipment (VAT Notice 708/6) -- GOV.UK

• Gross payment status compliance test changes -- GOV.UK

• quoting tips -- How to write professional quotes

• payment terms -- Payment terms and deposits

• insurance -- Insurance requirements for tradespeople