Stamp Duty can be paid using FAST (for DBS/ POSB accounts), AXS, eNETS, GIRO etc. There is no instalment payment for Stamp Duty; it must be paid in full.
You are required to stamp a document before you sign it. If you sign a document, you are required to stamp it within the following time frame without incurring penalty.
Retrieving your Stamp Certificate is simple; login to e-Stamping portal to access the following modes.