The features of self- assessment for Individuals 1 / 2

Self assessment (SA) is for income not collected at source*

*An example of tax collected at source and employment income (PAYE)

How Self-Assessment works..

Remember it is the responsibility of the taxpayer to calculate their own tax liability

  1. Taxpayer is sent a notice to complete the SA (online or on paper)

  2. There are deadlines for filing the SA (31/10 for paper and 31/1 online) or 3 months after being given notice if its later

  3. It covers income tax, class 4 NIC and CGT

  4. Payment is due 31st January the following year (interim payments on account may also be paid)

  5. 31st January the following year is known as the filing date (for both paper and online) - different to the "actual file date"

  6. Online filing - Tax returns submitted electronically automatically calculate the tax due

  7. Paper filing - HMRC will (optionally) calculate it if filed by 31st October. 

    If a taxpayer submits a paper return on time, they can ask HRMC to calculate the tax due.

  8. When the HRMC calculate the tax they make no judgement on the accuracy of the information given to them

  9. HMRC then deliver a statement of account to the taxpayer as a reminder of amounts due

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