GST Calculator (9%)
Adds Singapore's 9% Goods and Services Tax to a price.
Result
- GST at 9%
- S$9.00
- Price including GST
- S$109.00
How to use the gst calculator (9%)
- Enter the price before gst (S$).
- The results update as you type, or press Calculate.
- Read the gst at 9% first, then the supporting figures below it.
Formula
GST = price × 9%; price with GST = price × 1.09.
Worked example
For example, with these inputs:
- Price before GST (S$): 100
the calculator returns:
- GST at 9%: S$9.00
- Price including GST: S$109.00
Background
The Goods and Services Tax rose from 8% to 9% on 1 January 2024. Businesses with taxable turnover above S$1 million must register, and GST-registered retailers must quote prices to consumers inclusive of GST, so most shelf prices already include it.
Tax planning in Singapore is mostly about timing and reliefs rather than complex structures. Topping up CPF, contributing to SRS and claiming every relief you qualify for can lower your marginal rate band, and the savings are larger for higher earners.
Frequently asked questions
How does the gst calculator (9%) work?
It applies this formula: GST = price × 9%; price with GST = price × 1.09.
Is this the same as my IRAS bill?
It is an estimate based on the published rates. Your notice of assessment will reflect all reliefs, rebates and income IRAS holds for you.