How much GST should I be paying when new change kicks in 2023?

The goods and services tax (GST) rate will be raised from 7 to 8 per cent from January next year and to 9 per cent from 2024.
From next year, the new rate will also apply to any item valued up to $400, defined as low-value goods, bought from GST-registered sellers or platforms, such as e-commerce sites, and imported into Singapore via air or post.
More than 300 overseas vendors, including overseas online marketplaces, have registered for GST under Singapore's Overseas Vendor Registration (OVR) regime.
All imported goods now, regardless of value and brought in via sea or land, are subject to 7 per cent GST. The same applies to goods above $400 and brought in via air or post.
GST will also apply to purchases of non-digital services, such as telemedicine, from January, if bought from GST-registered suppliers.
With the change approaching, consumers may find themselves in tricky scenarios, such as payment plans that cross into the next year.
Here are some examples of these and what will happen:
A: No, you do not need to pay GST. When you bought the bag, the seller did not have to charge GST as the changes had not kicked in. As it is valued below $400, it will also qualify for import relief.
A: GST is charged at 8 per cent on the import of goods over $400 on or after January 1, so you will pay 8 per cent GST to Singapore Customs for the laptop as it is coming in after Jan 1.
A: The new 8 per cent GST rate applies on services performed on and after January 1, 2023, even though the invoice was issued in December. The supplier may cancel the original tax invoice and issue a new one with 8 per cent GST charged. Alternatively, he could retain the original invoice and absorb the additional 1 percentage point of GST.
A: GST is charged at 7 per cent on services performed before January 1, 2023, and 8 per cent after that. In this case, 343 days (Jan 1 to Dec 9, 2023) are subject to 8 per cent GST, while the 22 days before the change kicked in are subject to 7 per cent GST.
Alternatively, the supplier may also choose not to cancel the original invoice and absorb the additional GST.
A: GST is charged at 7 per cent on payment made before January 1, 2023, and 8 per cent on payment made after that. In this case, the remaining unpaid balance will be subject to 8 per cent GST.
A: You will pay 7 per cent GST on the instalments made before January 1, 2023, and 8 per cent on the subsequent instalments. However, if the TV is delivered to you before January 1, 2023, you will pay 7 per cent on all subsequent instalments.
A: If you paid the course fees for 2023 in full before the change kicks in, the GST rate is 7 per cent. If you pay the course fees on or after January 1, 2023, you will be charged 8 per cent GST.
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This article was first published in The Straits Times. Permission required for reproduction.