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Most builders quote everything at the standard rate because it is the safe assumption. On a new dwelling, a qualifying conversion or a house empty two years, it is also the wrong one, and it is money off your price.
Pick the closest published class. The conditions under it are the ones you have to be able to evidence.
Before VAT. Labour and materials together, as you would quote them.
Pick what the work is
The rate follows the work, not the trade. The same plasterer is zero rated on a new dwelling, 5% in a two-year empty house and 20% on a kitchen refit next door.
designed as a dwelling or for relevant residential/charitable purpose. supplied in the course of construction. valid certificate held where RRP/RCP.
qualifying building. person constructing status. first grant of a major interest. not a holiday home.
non-residential converted to residential. supplied to the housing association. services closely connected to the conversion.
never used as a dwelling or vacant 10+ years. converted to dwelling or RRP. certificate where needed.
changes the number of single-household dwellings, or to multiple occupancy, or to RRP. the change in dwelling count actually occurs.
dwelling vacant 2+ years immediately before work starts.
within the Notice 708 / 708-6 scope lists.
repair, maintenance and extension of existing dwellings. all commercial work. professional services. plant hire. work on non-qualifying buildings.
Record what the work is when you set the job up, and every invoice off it carries the right rate with the class it came from written underneath. The next invoice does not need you to remember which house was the empty one.
The same engine decides the reverse charge on the same document, so a CIS subcontractor's invoice comes out with the VAT shown, not charged, and the deduction already off the labour.
vat_liability_classes (GB) Published source Last read from the source 12 Aug 2026.vat_standard_rate (GB) Published source Last read from the source 12 Aug 2026.vat_reduced_rate (GB) Published source Last read from the source 12 Aug 2026.vat_zero_rate (GB) Published source Last read from the source 12 Aug 2026.VAT reverse charge calculator
Six conditions decide whether you charge VAT at all. Answer them and the page builds the invoice, CIS deduction and all.
CIS deduction calculator
What a contractor withholds from your invoice at 20%, 30% and 0%, with materials and plant hire out of the base first.
Making Tax Digital countdown
Which MTD for Income Tax tranche catches you, the date it starts, and the days left.
Markup and margin calculator
The arithmetic solo contractors lose money on. 20% markup is not a 20% margin, and this shows you the gap in dollars.