Self Assessment glossary

What do the SA101 to SA110 supplementary pages cover?

Supplementary pages are extra forms sent with your SA100. SA101 is additional information, SA102 employment, SA103 self-employment, SA104 partnership, SA105 UK property, SA106 foreign income or gains, SA107 trusts, SA108 capital gains summary, SA109 residence and remittance basis, and SA110 tax calculation.

Figures checked against gov.uk on . General information, not tax advice.

At a glance

SA101
Additional information
SA102
Employment
SA103S / SA103F
Self-employment (short or full)
SA104S / SA104F
Partnership (short or full)
SA105
UK property
SA106
Foreign income or gains
SA107
Trusts etc.
SA108
Capital Gains summary
SA109
Residence, remittance basis etc.
SA110
Tax calculation

Which ones most people use

A sole trader adds the self-employment pages. A landlord adds the UK property pages. Someone who sold shares or a second home adds the capital gains summary, and an employee adds the employment page for each job.

gov.uk groups them by taxpayer type (for example employment or residence) and by type of income, deduction or relief (for example property, foreign or capital gains).

Check the version for the tax year

The forms and their notes are updated every tax year, so use the versions for the year you are filing. The list above matches the tax year that ended on 5 April 2026. SA110 is the tax calculation page, which online filing and software work out from the figures you enter.