Use this technical documentation for individual returns if you’re a software developer working with the Self Assessment online service.
Get guidance from HMRC if you’re a tax agent or an adviser.
Find out the completion rules and instructions for the 4-digit Requested and Previous Procedure Code that can be used in Data Element DE 1/10 for the Final Supplementary Declaration (FSD)
Use form P87 if you’re in paid employment and want to claim tax relief on your job expenses by post.
Reports on departmental staff numbers and costs.
Find out how to prove the originating status of your goods and check if you can claim preferential tariff treatment.
How product specific rules are used to identify the country of origin when importing or exporting between the UK and EU.
This measure introduces a new tax on exceptional electricity generation receipts of qualifying generating undertakings from 1 January 2023 to 31 March 2028.
Check the tariff classification for electromechanical food processors.
Self-employed individuals and landlords will have more time to prepare for Making Tax Digital (MTD) for Income Tax Self Assessment (ITSA), following a government announcement today (19 December 2022).