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ProLast reviewed 27 May 2026 · 4 min read

Set up VAT and CIS

Turn on VAT or CIS once in your business details, and the invoice sheet gives you the right controls per job: a VAT mode for VAT-registered traders, a deduction rate for CIS contractors.

What it does

Telling TradeBooked you are VAT-registered or a CIS contractor unlocks the right controls on the invoice sheet, so the totals on every PDF come out correctly and your accountant gets clean exports.

VAT: pick a mode per invoice (20%, 5%, zero-rated, exempt, or off) and TradeBooked handles the maths.

CIS: mark the invoice as CIS and apply the deduction rate, so the customer sees the right net total and your accounting sync pushes the right numbers.

Before you start

You will need a TradeBooked account on the Pro or Autopilot plan, your VAT number if you are VAT-registered, and your UTR plus deduction rate if you are a CIS contractor.

VAT modes, CIS, line items, discounts and photos are all part of advanced invoicing, available on Pro and Autopilot.

Setup steps are in your dashboard

This is a Pro feature. Sign in on a Pro plan to see the step-by-step setup for your number.

Common questions

I am not VAT-registered, do I need this?

No. Leave VAT registered off and your invoices do not show any VAT. Turn it on when you do register, you only need to do it once.

What VAT rate should I pick?

20% is the standard rate for most trade work. 5% applies to specific qualifying domestic energy work. Speak to your accountant if you are unsure, TradeBooked records what you choose.

How does CIS deduction work on the invoice?

Mark the invoice as CIS and apply the deduction rate. The customer-facing total reflects the deduction, and the CIS flag flows through to your accounting sync.

Will old invoices change if I update my settings?

No. Past invoices keep the VAT and CIS settings they were issued with. Only future invoices use the new settings.

When do I have to register for VAT as a tradesman?

You must register if your VAT-taxable turnover goes over £90,000 in any rolling 12 months (the threshold from 1 April 2024), or if you expect to go over it in the next 30 days alone. HMRC calls this a rolling test, not a "tax year" test.

Should I register voluntarily under the threshold?

Sometimes. If most of your customers are VAT-registered businesses (developers, letting agents, commercial), they reclaim the VAT, so registering lets you reclaim VAT on your own materials. For mostly domestic customers, voluntary registration usually makes you 20% more expensive without much upside.

Do I charge VAT on materials I have already paid VAT on?

Yes. VAT is charged on the gross customer-facing price of the line, not the net cost. You reclaim the VAT you paid your suppliers separately on your VAT return, so it nets out at the end of the quarter.

What is CIS and do I need to be on it?

CIS is the Construction Industry Scheme. If you are a subcontractor working for a contractor, the contractor deducts CIS at 20% (registered) or 30% (unregistered) from your labour element and pays it to HMRC against your tax bill. Most general consumer trades are not on CIS; subcontractors to bigger builders usually are.

What if I am just under the VAT threshold?

Plan ahead. Watch the rolling 12-month turnover, not the tax year. Crossing the threshold mid-year still requires registration. Speak to your accountant about whether to register early, hold steady, or restructure the work split between labour and materials.

What plan do I need?

VAT modes, CIS handling and line-itemised invoices are part of advanced invoicing, available on the Pro and Autopilot plans.

Related guides

Related searches

  • vat threshold tradesman uk
  • do i need to register for vat plumber
  • vat on labour and materials
  • cis tradesman uk
  • vat threshold 2024 90000

References

This is general guidance, not legal, tax or financial advice. For your own circumstances, speak to a qualified professional.

Still stuck? Email support@tradebooked.co.uk.