Following formula for Stamp Duty in New South Wales.

Given Stamp duty is calculated at (please verify if following is correct at time of reading before applying this formula):

• 3% of the market value up to $45,000
• 5% on the value over $45,000.

Full formula:

case(int(({DutyValue}+99.99)/100),x>450,x*5-900,x*3)

Simplified formula (assumes you never sell bikes above $45k)

int(({DutyValue}+99.99)/100)*3