Tax rules • United Kingdom
Tax rules for the UK
Each rule here is the one Bilbx runs, with the figure the app uses and HMRC's own words under every sentence.
The tax year
6 April to 5 April
The UK tax year: 6 April to 5 April
If you're self-employed and do not prepare accounts, you record income and expenses for each tax year, 6 April to 5 April, and Bilbx's Tax Lab totals your receipts by that year.
Read the ruleHow often you file GST or VAT
Quarters ending March, June, September and December
VAT return periods: quarters and stagger groups
How often you send a VAT Return, as HMRC sets it out, and the periods Bilbx's Tax Lab shows: quarters ending March, June, September and December.
Read the ruleThe line each expense goes on
Self-employment (SA103S), boxes 11–19
Self-employment (short): the box each expense goes on
The expense boxes of the short self-employment pages, as HMRC prints them, and the one Bilbx's Tax Lab adds each category's receipts up on.
Read the ruleRecords of business use
Mileage log, for its own year
Business use: your vehicle and your home
How HMRC asks you to split a vehicle's and a home's costs between business and private use, and the years Bilbx's Tax Lab applies each split for.
Read the ruleWhat a receipt needs for a tax credit
£250
VAT invoices: the £250 simplified invoice limit
For a transaction of more than £250, the supplier must issue a full VAT invoice. What HMRC asks for, and how Bilbx marks your receipts against it.
Read the ruleCheck a receipt
Enter a receipt to see what Bilbx does with it under the UK's rules. It is worked out in your browser by the same code the app runs, and nothing you enter is sent or stored.
Enter a date and a total to see the answers.
For the records behind these rules, see the guides for the UK. How we research and review.