GST errors can include, for example, a simple clerical error (maybe they paid $5,600 instead of $5,060, or doubled up on an amount in a BAS) or, with the new rules on imports, miscalculate an amount related to an importation.<\/p>\n

Your client has four years and one day from when they lodged the activity statement to do this. This time limit is known as the period of review. However for tax periods starting before 1\u00a0July 2012, the ATO can still be persuaded to consider outstanding amounts if it can be proven that notification has previously been made about the amount.<\/p>\n

An outstanding GST credit is any GST credit for a purchase that they\u2019re entitled to, but have yet to claim \u2013 including not claiming because they don\u2019t hold a valid tax invoice.<\/p>\n

If a taxpayer has an outstanding GST credit for a purchase, it\u2019s generally not necessary to revise an earlier activity statement. Instead, providing they hold a valid tax invoice, they can claim the GST credit in the next activity statement lodged providing this is done within the four-year time limit.<\/p>\n

When the four-year time limit begins: Cash basis
\n<\/strong>If your client accounts for GST on a cash basis, the earliest tax period in which they can claim a GST credit for a purchase is the tax period in which they make the payment.<\/p>\n

Example: Time limit for GST credit (cash accounting):<\/em>\u00a0Peter the plumber reports GST quarterly and accounts for GST on a cash basis. In May 2017, Peter pays in full for some tools. The earliest tax period in which he can claim the GST credit for his purchase (setting aside any requirement to hold a tax invoice) is the quarterly period ending 30\u00a0June 2017. The due date of Peter\u2019s activity statement for this period is 28\u00a0July 2017. The four-year time limit for claiming the GST credit ends four years from this date (28\u00a0July 2021).<\/p>\n

Peter needs to obtain a valid tax invoice (if he doesn\u2019t already have one) and claim the GST credit in an activity statement that he lodges by 28\u00a0July 2021. If he doesn\u2019t claim the credit by this time Peter will cease to be entitled to the credit.<\/p>\n

Example: Payment over multiple tax periods (cash accounting):<\/em>\u00a0If you make the payment over multiple tax periods, the time limit applies separately to each part of the payment.<\/p>\n

Ruberto & Co reports GST monthly and accounts for GST on a cash basis. The business buys a printer, paying for half of it on 14 April 2017 (when the order is placed) and the other half on 5 May 2017 (when the printer is delivered).<\/p>\n

The earliest tax period in which Ruberto & Co can account for the first half of its GST credit is the April 2017 period and the earliest tax period in which it can account for the second half is the May 2017 period. The four-year time limit for the first half of the credit ends four years from the due date of Ruberto & Co\u2019s activity statement for the April 2017 tax period (that is, 21\u00a0May 2021). The four-year time limit for the second half of the credit ends four years from the due date of Ruberto & Co\u2019s activity statement for the May 2017 tax period (that is, 21\u00a0June 2021).<\/p>\n

When the four-year time limit begins: Accruals basis
\n<\/strong>If your client accounts for GST on a non-cash (accruals) basis, the earliest tax period in which they can claim a GST credit for a purchase is the first tax period in which either:<\/p>\n