Welcome to the Community, Fiodor. You can choose the Calendar year: 01 Apr–31 Mar to simplify your monthly bookkeeping and align your internal Profit-and-Loss reports with standard month-end dates.
However, since HMRC’s official reporting period is the Standard (Statutory) tax year 06 Apr–05 Apr, the Main view section is hard-coded to those dates to ensure compliance.
If you have any other questions or concerns, please don't hesitate to reach out. We’re always here to help.
