UK tax year
For finance ops that need the tax year in a cell. Start with Getting started. A salary estimate is income tax. CSV for Sheets is in spreadsheets.
GET /v1/uk/tax-year uses the UK rule: the year starts on 6 April and ends on 5 April. The date is read in Europe/London. Deadlines are the standard paper date (31 October), online filing and balancing payment (31 January), and the second payment on account (31 July). This is not a personalised HMRC calculation.
format=csv returns the date table.
Try it
https://fetch.li/v1/uk/tax-year?at=2026-09-26
26 September 2026 is tax year 2026/27, quarter 2.
Parameters
| Parameter | Required | Description |
|---|---|---|
at |
No | ISO date. Default is now |
Demo
GET endpoints work without an API key on the public demo tier (60 calls per hour per IP). See demo.
Related: income tax, VAT period, spreadsheets.
Try it
GET https://fetch.li/v1/uk/tax-year
Answer
Response