Use form SA100 to file a tax return, report your income and to claim tax reliefs and any repayment due.
You can send this tax return online instead of downloading the form. Find out how to send your Self Assessment tax return online.
The SA100 is the main tax return for individuals. Use the SA100 to file your tax return for income and capital gains, student loan repayments, interest, pensions, annuities, charitable giving and to claim tax reliefs and allowances. You may need to include supplementary forms for certain types of income.