Are you a GST-registered business looking to ensure that you have filed your past GST returns accurately? The Assisted Self-help Kit Annual Review (‘ASK’ Review) is just for you.
This self-assessment tool is designed to support voluntary compliance of GST-registered businesses. Businesses may use the ASK Annual Review to:
- Review the correctness of their GST returns on a voluntary basis to identify errors.
- Conduct an ASK Review on a compulsory basis when applying for or renewing certain GST schemes.

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To ensure that these ASK Administrative Concessions remain up-to-date and relevant, IRAS has recently reviewed and expanded the scope of the concessions based on feedback from members of the Singapore Chartered Tax Professionals Limited (SCTP).
Below, we highlight several new and updated concessions that would facilitate GST compliance for businesses.
| 1 | Claimed input tax based on tax invoices with incomplete information | Under the new ASK Administrative Concession E10, if your supplier’s foreign currency denominated tax invoice did not include the Singapore dollars equivalent of the total GST chargeable on the supply, you do not need to amend your past GST returns or ask your supplier to reissue the tax invoice. This applies as long as you claimed the input tax based on the exchange rate shown on the invoice. |
| 2 | Late reporting of standard-rated supplies and output tax | Under the ASK Administrative Concession B3, if you had reported your standard-rated supplies and output tax late, you do not need to amend your past GST returns if all the supplies and output tax have been reported within 12 months of the time of supply. |
| 3 | Rounding adjustments | Under the ASK Administrative Concessions B1 and E11, you can continue with your current GST reporting method without making any corrections for the variations until the next system update if the variances arise from rounding differences between your system-computed GST amount and the GST amount shown on the invoices and/ or credit notes. |
Read this document for more details on the new concessions. For the full list of administrative concessions, please refer to the ASK: Declaration Form on Administrative Concessions.
Administrative Concessions for all GST-registered businesses to apply
IRAS has made available certain ASK Administrative Concessions for all GST-registered businesses to apply, where applicable. These concessions are published on the webpage, “Correcting errors made in GST return (filing GST F7)” under “FAQs”.