Changing GST Accounting Periods

When you register for GST, you are allocated quarterly GST accounting periods according to your financial year-end.

Filing Frequency and Cycle of Accounting Periods

Depending on your business needs, you can write in to request for a change in filing frequency (e.g. change to monthly GST accounting period) via myTax Mail (log into myTax Portal). Your request will be subject to IRAS’ approval.

Your GST accounting periods are not automatically adjusted whenever there is a change to your financial year end.

Filing Frequency

Cycle of Accounting Periods

Quarterly

Jan-Mar, Apr-Jun, Jul-Sep, Oct-Dec

(for businesses with financial year ending Mar, Jun, Sep or Dec)

Feb-Apr, May-Jul, Aug-Oct, Nov-Jan

(for businesses with financial year ending Jan, Apr, Jul or Oct)

Mar-May, Jun-Aug, Sep-Nov, Dec-Feb

(for businesses with financial year ending Feb, May, Aug or Nov)

Monthly

Every month

Applying for Special Accounting Periods

When you have financial accounting periods that do not start on the first day or end on the last day of calendar months, you may apply for special accounting periods for your GST returns. Your request will be subject to IRAS’ approval.

If your financial year end is 28 Dec, you may request for the following special accounting periods:

Filing FrequencyCycle of Accounting Periods for financial year ending 28 Dec
Quarterly

29 Dec to 28 Mar

29 Mar to 28 Jun

29 Jun to 28 Sep

29 Sep to 28 Dec

Please write in with your proposed special accounting periods for one year to us via myTax Mail (log in to  myTax Portal), at least 30 days before the start of the first accounting period.  If we do not receive your request on time, you will be placed on the standard GST accounting periods by default. 

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