https://circlesasiasupport.zendesk.com/hc/en-us/articles/13736305953305-I-have-ongoing-monthly-installment-payments-for-a-device-I-bought-will-the-balance-be-subject-to-8-GST
No, the installment amount will not change as GST was already included in your device cost.
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https://www.paypal.com/us/business/accept-payments/installment-payments?locale.x=en_US
Installment payments make managing purchases easier for businesses. Let your costumers pay in 4 or monthly and boost your sales.
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