There are special rules in place which limit the ability to change a company’s year-end date. A company’s year-end date is also known as its ‘accounting reference date’ and is historically set by reference to the date the company was incorporated. Under certain circumstances, it is possible to make a change to the year-end.
As a general rule, you can only change the year-end for the current financial year or the one immediately before it. Making a change to a year-end date will also change the deadline for filing accounts (except for during a new company’s first financial year).
There is no limit to the number of times you can shorten a year-end date, but you can only extend the period to a maximum of 18 months once every five years. The financial year can be extended more often under limited circumstances such as when the company has been put into administration.
A request for a change to an accounting reference date can be made online using the Companies House online service or by using a postal version of the Change your company accounting reference date (AA01) form. No change can be made to a period for which accounts are overdue.
There is no overriding reason for using one date over another but there are a number of factors to consider. The most common year-end dates are usually 31 December (to coincide with the end of the calendar year) or 31 March (to coincide with the end of the tax year).
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