++ (plus plus)

Everyday & Singlish

A menu price plus 10% service charge and 9% GST: $100++ is $119.90.

When a restaurant menu says $20++, the two pluses are a 10% service charge and 9% GST. GST is charged on the price after the service charge, so the total is the menu price × 1.1 × 1.09, or about 1.199 times the menu price.

Menu price You pay
$20++ $23.98
$50++ $59.95
$100++ $119.90

A quick rule: add about 20%. Hawker centres and most coffee shops show nett prices, so what you see is what you pay.

Official sources