Any income received during the tax year running from the 6th of April to the 5th of April must be accounted for in your tax return.
To report your income, claim tax reliefs or any outstanding repayments, you will need to complete the SA100 form.
You might need to fill in more sections, known as ‘supplementary pages’, if you’re reporting other types of income.
- Employees or company directors (SA102)
- Self-employment (SA103S or SA103F)
- Business partnerships (SA104S or SA104F)
- Property income (SA105)
- Foreign income or gains (SA106)
- Capital gains (SA109).
If you’re sending a tax return for a business partnership, trustee or non-resident company, there are additional forms to complete which are available on the HMRC website. If you’re in any doubt about whether or not you need to complete a self-assessment, please feel free to contact us about our tax planning services and we will be more than happy to help.
What you need
In order to complete your paper self-assessment tax return, you will need:
- Forms P60, P45 and P11D
- Business records
- Profit and loss accounts
- Bank statements
- Personal pension contributions certificates
- Gift aid donations.
Calculating your bill
Once you’ve submitted your paper tax return, HMRC will calculate the amount of tax you need to pay. They will also add a payment on account for the 2017/18 tax year so please be prepared for this extra expense.
If you owe less than £3,000 tax for the 2016/17 tax year, HMRC can try to collect the remaining tax from your wages or pension from the 6th of April via your PAYE tax code. This will only happen if the paper tax return is submitted by the 31st of October 2017.