Invoice Total Calculator
Calculate invoice totals with line items, tax rate, and discount.
Get subtotal, tax amount, and final total.
Invoice Total
Invoice Total is calculated from line items, tax, and discount:
Subtotal = Sum of (Quantity × Unit Price) for each line item
Discount Amount = Subtotal × (Discount % / 100)
Taxable Amount = Subtotal - Discount Amount
Tax Amount = Taxable Amount × (Tax Rate / 100)
Total = Taxable Amount + Tax Amount
Common tax rates (US sales tax):
- No sales tax: OR, MT, NH, DE, AK
- Low: CO (2.9%), AL (4%)
- Medium: TX (6.25%), NY (4% state + local)
- High: CA (7.25%), TN (7%)
Tip: Enter each line item as quantity × unit price. The calculator sums all items before applying discount and tax.