Worked example
Add each product or service, quantity, and rate, then apply discount, tax, and shipping to review the full invoice total.
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Billing & invoices
Invoice Calculator
Build an itemized invoice estimate with quantities, rates, successive totals, discount, tax, shipping, and a printable summary.
Line items
Add products or services to the invoice.
Item 1
Line total: ₹3,000.00
Item 2
Line total: ₹2,500.00
Formula
How it is calculated
Invoice Total = (Subtotal − Discount) + Tax + Shipping
Results are estimates based on the figures entered and may exclude taxes, fees, accounting adjustments, or employment rules not shown.
Frequently asked questions
How is invoice tax calculated?
The entered discount is subtracted first, then tax is calculated on the discounted taxable amount.
Can I add multiple products or services?
Yes. Add or remove line items and enter a separate quantity and rate for each.
How do I download the invoice?
Choose Print / PDF, then select “Save as PDF” in your browser print dialog. This keeps generation on your device.
Practical guidance
Use the Invoice Calculator with confidence
Build itemized invoice totals with tax and discounts. Review the example and limitations below before using the result for an important decision.
Assumptions and limits
The estimate excludes accounting adjustments and costs not entered, such as refunds, payment fees, credits, withholding, and jurisdiction-specific rules.
How to read the result
Calculations run from the values you enter using the formula described on this page. Inputs are processed in your browser and results are rounded for display.
Calculation methodology
Read our calculation methodology Educational estimate only. Verify regulated financial, tax, employment, or legal decisions with an official source or qualified professional.