Zero-rated supplies are different as compared to exempt supplies, although both of them qualify for a 0% GST.
As per IRAS, out-of-scope supplies include the sale of goods not brought into Singapore, sales of overseas goods made within the Free Trade Zone and Zero GST Warehouses, and private transactions.
As per IRAS, GST-exempt supplies include the following.
The provision of financial services;
The supply of digital payment tokens (with effect from 1 Jan 2020);
The sale and lease of residential properties; and
The import and local supply of investment precious metals (IPM).
GST need not be charged on exempt supplies.