Markup calculator
Enter a cost and the markup you want to apply, and get the selling price, the gross profit, the margin that markup actually delivers, and the GST-inclusive price if you are registered. Free, no signup.
Markup is applied to cost; margin is measured against the selling price. To hit a target margin, divide the cost by (1 − margin), not by (1 + margin).
What a markup actually produces
A markup is applied to your cost. The margin it produces is always lower, and the gap widens as the markup rises. A 25% markup gives a 20% margin; a 100% markup gives a 50% margin.
This calculator shows both so the number you set and the number that lands in your accounts are visible together.
Remember GST is not margin
If you are GST-registered, the 9% you add on top is not yours — you are collecting it for IRAS. Quoting a GST-inclusive price and then treating the whole amount as revenue is a fast way to be short at filing time.
The calculator shows the GST-inclusive price separately for exactly that reason.
Questions
How do I calculate a selling price from a markup?
Multiply the cost by one plus the markup percentage. A 50% markup on S$60 gives S$60 × 1.5 = S$90.
What markup gives a 50% margin?
A 100% markup. Doubling the cost is what produces a half-margin, which surprises most people the first time they see it.
A calculator answers one question once. Digital 9 Labs builds the system that answers it continuously — your real numbers, updated as the work happens, without anyone reopening a spreadsheet.