HMRC have published information on their website surrounding their new tax allowance.
This new allowance starting from 2017/18 tax year, effectively means that if your income (before expenses) is less than the £1,000 value, you will no longer have to declare or pay tax on this income.
If your income is over the threshold, it means that individuals will now be able to complete one of two actions for calculating your taxable profits:
In order to input this into the software, you need to locate the page in the software for trade/property. The HMRC Forms locations have been included below for reference: