VAT Calculator
Add VAT to net amounts or remove VAT from gross amounts.
Guided Mode (DIY-friendly)
Use the guided steps to avoid VAT mode/rate mistakes.
Type
Rate
Review
NAIBC / IRC codes
References & Sources
Standards Cited
- State Sales Tax Codes — State and Local Sales Tax Regulations
Sales tax rates and rules vary by state, county, and municipality; no single federal sales tax applies in North America
Formulas Used
- Add Sales Tax (net to gross):
gross = net x (1 + taxRate / 100)
Source: Standard sales tax calculation - Remove Sales Tax (gross to net):
net = gross / (1 + taxRate / 100)
Source: Standard sales tax calculation - Tax Amount (from net):
tax = net x (taxRate / 100)
Source: Standard sales tax calculation - Tax Amount (from gross):
tax = gross - (gross / (1 + taxRate / 100))
Source: Standard sales tax calculation
Key Assumptions
- NA terminology: "Sales Tax" rather than VAT; rates vary by jurisdiction (0% to ~10%+) — State sales tax codes
- Construction materials may be taxable, exempt, or subject to use tax depending on jurisdiction — State sales tax codes
- Some states have no sales tax (e.g. Oregon, Montana, Delaware, New Hampshire) — State sales tax codes