You can enter Child Benefit payments in SimpleStep or HMRC Forms mode.
Click on Working out your tax.
Click on Child Benefit Tax charge.
Your net income will automatically appear from information already entered on the form.
Click yes, no or both equal to the question Is your income higher than your partner's?
If yes, enter how much Child Benefit you've received and for how many children.
Click on SA100 Core Return.
Click on Page 5.
Enter the information under High Income Child Benefit charge.
Note: Remember that only the person who earns the most money in a couple needs to pay this charge.