Responsibilities of a GST-Registered Business

A GST-registered business' responsibilities include charging and accounting for GST, filing GST returns on time, keeping proper records and displaying prices inclusive of GST.
You are a GST-registered person from the Effective Date of Registration as stated in the approval letter. Under the GST law, there are responsibilities that you need to fulfil from that date.

1. Charge and Account for GST on Standard-Rated Supplies

For supplies of goods and services made in Singapore (standard-rated supplies), you need to charge and account for 7% GST.

However, if you make relevant supplies [i.e. local sales of prescribed goods (mobile phones, memory cards and off-the-shelf software) exceeding $10,000 in value] that are subject to customer accounting, you must not charge GST to your GST-registered customer. Instead, your GST-registered customer receiving the relevant supply will need to account for the GST (as his output tax) instead.

2. e-File GST Returns and Pay Tax Due

You must file accurate GST returns and pay the tax due in a timely manner.

Filing GST Returns on Time

All GST returns must be submitted via e-Filing (myTax Portal) within one month from the end of each accounting period.

If there is no transaction, you are still required to submit a "NIL" GST return.

You may refer to Overview of GST e-Filing Process for step-by-step instructions on e-Filing and Completing GST Return on how to complete GST returns.

Filing Late or Not Filing

Failure to e-File is an offence punishable with a fine up to $5,000 and in default of payment, an imprisonment term up to six months.

For non/late submission of GST F5/ F8 returns, IRAS may:

  • With effect from 1 April 2018 - impose a late submission penalty of $200 immediately once the GST return is not filed by the due date. A penalty of $200 will continue to be imposed for every completed month that the GST F5/F8 return is outstanding (subject to a maximum of $10,000 for each outstanding F5/F8 return). Please refer to the examples on how the late submission penalty is imposed.
  • Issue an estimated assessment of the tax due and the amount is subject to late payment penalties. The estimated assessment and late payment penalties will only be revised upon receipt of the overdue GST return.

Paying GST Due on Time

Tax due must be paid within one month from the end of each accounting period.

Paying Late or Not Paying

For non/late payment, a 5% penalty will be levied on the amount of tax unpaid by the due date. An additional penalty of 2% per month on tax remaining unpaid after 60 days from the due date of the prescribed accounting period (subject to a maximum of 50% of the outstanding tax) may also be imposed.

Please refer to an example on how late payment penalties are imposed.

3. Keep Proper Business and Accounting Records

You need to keep all business and accounting records for at least five years.

This requirement remains even if your business has ceased or is deregistered from GST.

Please refer to Keeping records for the types of records to keep.

4. Display Prices with GST

Any price displays, advertisements, publications or quotations in respect of goods or services made to the public must be inclusive of GST. If both GST-inclusive and GST-exclusive prices are displayed, the GST-inclusive price must be at least as prominent as the GST-exclusive price. Failure to comply with each of these requirements is an offence that can result in a fine of up to $5,000.

Please refer to Displaying prices for the acceptable price display format. Note that an exception to the above rules applies to businesses in the hotel and food & beverage (F&B) industries for goods and services that are subject to service charge.

5. Issue Tax Invoices with GST Registration Number

You are required to issue tax invoices/customer accounting tax invoices for your standard-rated supplies.

If the total amount payable for your supply (including GST) does not exceed $1,000, you may issue a simplified tax invoice.

Your GST Registration Number should be reflected on all your tax invoices, simplified tax invoices and receipts.

Please refer to Invoicing customers for information required in a tax invoice and simplified tax invoice.

6. Notify IRAS of Changes

You need to inform the Comptroller within 30 days after any change to your business circumstances. These changes include:

  1. Change in GST mailing address;
  2. Change in business constitution or ownership;
  3. Change in partner(s) or particulars of partner(s); and
  4. Set up of new partnership businesses with the same composition of partners.

Please refer to Notify IRAS of changes to your business for the procedures.

7. Accounting for GST at Point of De-Registration

When your GST registration is cancelled, you need to account for GST on business assets held on the last day of registration if GST was previously claimed on their purchase and the total market value of these business assets is more than $10,000.

These assets include inventories, fixed assets, non-residential properties and goods imported under the various GST schemes.

Please refer to Cancelling GST registration for more details.

8. Obligations for Voluntary Registrants

If you are under voluntary registration, you have to:

  1. Use GIRO for payment and refund of GST;
  2. Remain GST-registered for at least two years;
  3. Comply fully with the responsibilities of a GST-registered business;
  4. Make taxable supplies within two years if you have not started making taxable supplies at the point of applying for GST registration; and
  5. Any other conditions as may be imposed by IRAS.

The conditions vary for businesses who are voluntarily registered under the overseas vendor registration pay-only regime.

The Comptroller may cancel the voluntary GST registration if any of the conditions are not met or if there is evidence to conclude that you are committing or participating in a Missing Trader Fraud arrangement.New


9. Obligations for Compulsory Registrants

New If you are under compulsory registration, you have to comply with any conditions as may be imposed by IRAS for the protection of revenue. 

For instance, businesses assessed to pose a risk to revenue may have conditions imposed on their GST registration by IRAS.

The Comptroller may cancel the compulsory GST registration if there is evidence to conclude that you are committing or participating in a Missing Trader Fraud arrangement.


  • Q1. I have just submitted my application form for GST registration. Do I need to start charging GST?

    You should only start charging GST from your Effective Date of GST Registration.

    Upon successful application, you will receive an approval letter which informs you of your GST Registration Number and the Effective Date of GST Registration.