The FT is reporting [£] changes to the rules on how businesses date their annual accounts. Currently, the tax burden falls at the end of the tax year in which their accounting period stops. So if you decide to end your financial year on April 30 (as many do, because it allows them to defer payments for 11 months compared to other taxpayers) you won’t be able to do this anymore.
From 2023, the government is proposing that businesses and their partners will be obliged to align their taxable profits with the rest of the country, even if they choose to prepare their accounts for a different date.