01 / The practical impact
Registration changes more than the invoice footer.
For a trade business, the effects show up in the quote, the materials account and the monthly admin. The right treatment still depends on the work and the customer.
Taxable turnover
The test is taxable turnover, not simply profit and not necessarily the total on your calendar-year accounts. Keep an eye on each rolling 12-month period, and remember that the next 30 days can create a separate registration trigger.
Quoting and pricing
A VAT-registered trade business normally needs to show VAT correctly on its invoices and decide how to quote for new work. A VAT-registered business customer may be able to reclaim VAT, while a domestic customer generally cannot, so VAT can affect the price a household sees.
Tools and materials
If you are VAT registered, you may be able to reclaim eligible VAT on business purchases such as tools and materials through your VAT Return. You need valid VAT invoices, a business purpose and records supporting the claim. Personal use and scheme rules can limit what is reclaimable.
Records and returns
Plan to keep invoices, purchases, VAT on sales and purchases, and the information needed for your VAT Returns. Most VAT-registered businesses must keep certain records digitally under Making Tax Digital, unless an exemption applies.
02 / The work matters
The VAT rate depends on the job and the conditions.
Do not assume every trade job is charged at the same rate. HMRC’s headline rates are standard 20%, reduced 5% and zero 0%, but trade-specific exceptions and conditions apply. For example, most work on houses and flats by builders and similar trades is standard-rated, while some new-build, energy-saving, empty-home or disabled-person work may qualify for reduced or zero rating when the HMRC conditions are met.
20%
Standard rate
Most goods and services.
5%
Reduced rate
Some supplies, including certain energy-saving work when conditions are met.
0%
Zero rate
Some qualifying supplies, including certain new-build work, subject to rules.
Exempt and out-of-scope supplies are different from zero-rated supplies. Check the exact work, property and customer circumstances in HMRC’s guidance before quoting.
03 / Two moments to watch
The timing depends on how you cross the line.
These examples are simplified illustrations of the HMRC rules. They are useful prompts for checking your records, not a decision about your own liability.
A builder crosses £90,000 in September
A builder’s taxable turnover for the previous 12 months reaches £92,500 on 14 September. Because the previous-12-month total has gone over £90,000, the builder must register within 30 days of the end of September — by 30 October in this example.
The effective date of registration is 1 November, the first day of the second month after the threshold was exceeded.
An electrician books a threshold-crossing job
An electrician has £78,000 of taxable turnover and books a £15,000 taxable job. Once they realise that taxable turnover is expected to exceed £90,000 in the next 30 days, the next-30-days rule applies.
They must register by the end of that 30-day period. The effective date is the date they realised the threshold would be exceeded, not the later date the work is invoiced or paid.
04 / A sensible next check
Start with the numbers you already have.
Add your monthly taxable turnover and use the result as a prompt to review your dates, quotes and records with the right source of advice.
- 01
Separate taxable turnover from exempt or out-of-scope work.
- 02
Review the rolling 12-month total and any work expected in the next 30 days.
- 03
Check the exact VAT treatment for the work before you issue a quote.
- 04
Confirm your registration position and timing with HMRC or a qualified adviser.
Keep the rolling view
See where your turnover stands today.
Rillmark’s checker is informational only. It does not decide whether you must register and it is not tax advice.
Sources and review date
Check the rule at the source.
HMRC guidance changes. This article was checked against the sources below on 12 October 2026. Confirm the current position before acting.