GST Calculator (Singapore)

LAST UPDATE: September 25th, 2020

Definition – What is the GST?

The GST, or Goods and Services Tax, is a value-added tax on purchases.

As a value-added tax, only the final consumer pays the GST – purchases by business at other stages of production do not pay GST (they are charged GST, however, those charges act as a credit against the GST they charge).

Rates

Singapore’s current GST rate is 7%.

Historic rate changes have been: 1994 (introduction of GST) – 3%. Increase in 2003 to 4%, increase in 2005 to 5%, and an increase in 2007  to 7%.

What goods and services are not charged GST?

The Inland Revenue Authority keeps a record of goods and services not charged GST.

Popular (but not all) categories are:

• Financial Services
• Renting an Unfurnished Residential Dwelling
• Precious Metals
• Exports
• International Services (such as an airline ticket from Singapore to Malaysia)

Formula – How to calculate GST

GST is calculated by multiplying the GST rate (7% in Singapore) by the total pre-tax cost. The cost of GST is then added to the purchase.

Example: \$75 of goods x 7% GST = \$5.25 GST

\$75 of goods + \$5.25 GST = \$80.25 total

Formula – How to calculate reverse GST

To find the GST from a total, divide the total amount by the GST rate divided by 100 and plus 1.

Example: \$70 total (with GST) at 7% GST rate

(7% / 100) + 1 = 0.07 + 1 = 1.07

\$70 / 1.07 = \$65.42 cost before GST