Hi
I have a supplier who has charged GST on their invoice but not registered. I have only made payment of the amount minus the GST and asked them to resend another copy of the invoice without GST. They have advised they are registered and its just not showing up. My question is, if they register today for GST and backdate it, do I then have to pay the rest of the invoice? Or is it now too late for them to charge GST. As of today, it still shows not registered but they may have registered today and backdated it. Any help would be great.