How this tool works
Subtotal = quantity x rate. Discount applies first, then tax is applied to the discounted subtotal.
Work and Income
Invoice Total Calculator
Calculate line subtotal, discount, tax and final invoice total.
Keep exploring this topic
Use the related tools and guides when the first answer raises the next question.
Order matters
Invoice totals depend on the order of subtotal, discount and tax. This calculator applies the visible fields in a simple sequence.
Example
A 500 subtotal with 10% discount becomes 450 before tax. Tax is then calculated on the discounted amount if that is how your invoice rules work.
Common mistake
Tax rules vary by location and product type. Treat this as an estimate and check the rules that apply to the actual invoice.