How this calculator works
Find tax amount and final purchase total from a pre-tax price.
Formula
tax = amount * (rate / 100), total = amount + tax
Step-by-step
- Enter price before tax.
- Enter tax rate percentage.
- Calculate to see tax amount and total price.
Example
- Price = 120
- Tax rate = 8.25%
Tax = 9.90, Total = 129.90
FAQs
Can I include local + state tax together?
Yes. Enter the combined rate as one percentage value.
Does this include rounding rules by jurisdiction?
No. It provides a mathematical estimate; local invoice rules may vary.