Every Gloriads blog article tagged GST.

Amazon already charges GST/HST on an unregistered seller's amazon.ca sales. Registering costs a Canadian seller nothing there and returns the ad tax.

A regular GST-registered Amazon seller in India gets the 18% GST on ads back as credit. Composition and exempt-goods sellers lose it. Rules, deadlines.

A Canadian KDP author with no GST/HST number pays 5% to 15% tax on Amazon ads and never gets it back. Registering lets you claim it. Rules, cost, example.

Without a GST number, a New Zealand KDP author pays 15% GST on Amazon ads, for nothing. Registering voluntarily removes it. Rules, cost, worked example.

Without a GST number, a Singapore KDP author pays 9% GST on Amazon ads and never gets it back. Registering removes it, but binds you for 2 years.

Unregistered, an Indian KDP author loses the 18% GST on Amazon ads. Registered, the royalties are zero-rated exports and the GST comes back as a refund.

A GST-registered Australian seller claims back the 10% GST on Amazon ads. Under A$75,000, registering for it means 10% on every taxable sale: often a loss.

A GST-registered Singapore seller claims back the 9% GST on Amazon ads. A small seller who registers only for that pays 9% on every sale: often a loss.

Without GST registration, an Australian KDP author pays 10% GST on Amazon ads and never gets it back. Registering lets you claim it. Rules, cost, example.
Gloriads runs your Amazon Ads by rules you control, on all four ad types.