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VAT Code Onboarding Questionnaire: UK Businesses

Updated 31 October 2026

We use this questionnaire when we set up Aedon.Accounting for a new UK business. Your answers decide which VAT codes are switched on. You can complete it with your accountant using the download at the end of this article, or go through it with us at onboarding.

How the UK business questionnaire answers switch on VAT code groups

Your details

Detail Answer
Business name
VAT registration number
VAT return frequency: monthly, quarterly or annual
VAT accounting scheme: standard, cash, annual or Flat Rate
Accountant’s name and firm

Question 1: VAT registration

Is the business registered for VAT?

Answer Result
No Switch on three codes only: OOS-SAL-NA, OOS-PUR-NA and OOS-JNL-NA. Stop.
Yes Switch on the Standard group and go to Question 2.

Question 2: Flat Rate Scheme

Does the business use the VAT Flat Rate Scheme?

Answer Result
No Go to Question 3.
Yes Switch on the Flat Rate Scheme group, which replaces the standard sales and purchase codes. Complete the Flat Rate Scheme set-up. Skip Question 6.

Flat Rate Scheme set-up

Only if yes to Question 2. See The VAT Flat Rate Scheme: UK Businesses.

Detail Answer
Flat rate sector
Flat rate percentage
Limited cost business, using 16.5% Yes or no
Date of VAT registration, for the first-year 1% reduction
Turnover method: basic, cash or retailer’s

Questions 3 to 6: extra code groups

No. Question If yes, switch on Codes
3 Do you buy or sell goods or services outside the UK? International TAX-SAL-00-EXP, TAX-SAL-NA-SRV, TAX-PUR-20-RC, TAX-PUR-00-SRV, TAX-PUR-20-IMP, TAX-PUR-20-PIV
4 Do you buy or sell building work under the construction domestic reverse charge? Construction TAX-SAL-00-DRC, TAX-PUR-20-DRC
5 Do you move goods between Northern Ireland and the EU? Northern Ireland TAX-SAL-00-NIG, OOS-SAL-NA-OSS, TAX-PUR-20-NIA, TAX-PUR-00-NIA
6 Do you have exempt income, such as rents, insurance or finance, other than bank interest? Not asked if on the Flat Rate Scheme Partial exemption EXE-PUR-20, EXE-PUR-05, EXE-PUR-00, RES-PUR-20, RES-PUR-05, RES-PUR-00, RES-PUR-20-RC, RES-PUR-NA-PEA

Partial exemption set-up

Only if yes to Question 6. Ask your accountant for these settings. See Partial Exemption and Recovery Percentages: UK Businesses.

Detail Answer
Partial exemption method: standard or special
Partial exemption year end: 31 March, 30 April or 31 May
Current recovery percentage
Annual adjustment on the last return of the year, or the first return after it

Code sets

Set Codes
Not registered OOS-SAL-NA, OOS-PUR-NA, OOS-JNL-NA
Standard TAX-SAL-20, TAX-SAL-05, TAX-SAL-00, EXE-SAL-EX, EXE-SAL-EX-INT, OOS-SAL-NA, TAX-SAL-NA-ADJ, TAX-PUR-20, TAX-PUR-05, TAX-PUR-00, TAX-PUR-EX, TAX-PUR-NA-ADJ, OOS-PUR-NA, OOS-JNL-NA
Flat Rate Scheme TAX-SAL-20-FRS, TAX-SAL-05-FRS, TAX-SAL-00-FRS, EXE-SAL-EX-FRS, TAX-PUR-NA-FRS, TAX-PUR-20-FRC. These replace TAX-SAL-20, TAX-SAL-05, TAX-SAL-00, EXE-SAL-EX, TAX-PUR-20, TAX-PUR-05, TAX-PUR-00 and TAX-PUR-EX

Sign-off

Detail Answer
Completed by
Date
Confirmed by your accountant

A group can be switched on later if your business changes.

Download the questionnaire

Save a copy to complete with your accountant, then return it to your Aedon contact.

Download the questionnaire (PDF)

Need help?

If you have a question about the codes or the set-up, please raise a case and our support team will help.

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