GST on Advance Payment Solarsys 14 years ago If the advance payment received forms part payment of the supply, GST is chargeable. (information from IRAS) Share this: Email a link to a friend (Opens in new window) Email Share on Facebook (Opens in new window) Facebook Share on LinkedIn (Opens in new window) LinkedIn Share on Pinterest (Opens in new window) Pinterest Share on X (Opens in new window) X Share on Tumblr (Opens in new window) Tumblr