Office guide
How to Generate an Invoice
An invoice requests payment for work or goods already supplied. It should identify the seller and customer, show itemized charges, apply discounts and tax correctly, and state when and how payment is due.
Open the Invoice GeneratorWhat to prepare
A few reliable inputs make the first result easier to review.
- Accurate seller and customer billing details
- An invoice number, invoice date, and payment due date
- Item descriptions, quantities, rates, tax treatment, discounts, and payment terms
How to Generate an Invoice
- Enter the invoice identity, dates, parties, currency, and payment terms
- Add one line for each product or service with its quantity and rate
- Apply any discount and tax according to the agreed pricing and local rules
- Build the invoice, verify the totals, then print or download the final copy
Worked example
For three hours of design at $90 per hour, enter quantity 3 and rate 90. If a 10 percent discount applies before 5 percent tax, check that the preview follows the intended order of operations.
Review the result
Recalculate the subtotal and confirm the tax basis, due date, customer name, and remittance instructions. Keep the invoice number unique within your own accounting system.
Practical tips
- Describe deliverables clearly enough to match the agreement
- Use a consistent numbering sequence
- State late-payment or deposit terms only when they were agreed
Common mistakes to avoid
- Creating an invoice before confirming the customer’s billing entity
- Applying tax to an exempt item
- Changing a finalized invoice without preserving the original record
Build it in your browser
The free Invoice Generator processes entries locally in your browser. Review the generated draft against source information and any policy that applies before sharing it.