BUSINESS DOCUMENT GUIDE

How to Make an Invoice

An invoice is a document requesting payment for goods or services. A useful invoice makes the parties, work, amount due and payment expectations clear enough for both sides to review.

Gather the information first

Have your seller/business details, customer details, invoice number, invoice date, payment terms and the products or services you are billing for. Depending on your country and transaction, additional address, registration or tax information may be required.

Choose an invoice number and dates

Use the numbering system your business actually follows. Add the invoice date and, when appropriate, a due date. Invoice Generator does not create a hidden numbering sequence.

Identify seller and customer

Make it clear who issued the invoice and who is being billed. Add contact, address and registration details where they are useful or required.

Write useful line-item descriptions

Describe the product, service, project phase or deliverable clearly enough that the customer can understand the charge. Enter the quantity and rate for each item.

Calculate subtotal, discount, tax and total due

Invoice Generator rounds each line amount to the selected currency precision, adds the subtotal, applies the invoice-level discount, then calculates the optional tax percentage on the discounted subtotal.

Review tax requirements separately

The app performs the arithmetic you request; it does not determine whether tax applies, which rate is correct, or whether the document satisfies VAT, GST, sales-tax or other jurisdiction-specific invoice rules.

Add payment terms and instructions

Tell the customer when payment is due and provide the payment method or instructions you want them to use. Do not add sensitive credentials that do not belong on an invoice.

Review before sending

Confirm names, invoice number, dates, line descriptions, quantities, rates, tax, total due and payment instructions. Then print the invoice or save it as a PDF through your browser.

Invoice vs quote, estimate and receipt

A quote generally communicates an offered price before work or a sale, an estimate is a projected price, an invoice requests payment, and a receipt documents payment after it occurs. Treat them as separate business documents rather than interchangeable labels.

Worked example

Two design units at $75 plus one $25 asset produce a $175 subtotal. A 10% discount reduces that to $157.50. An 8.25% tax produces $12.99 after currency rounding, for a total due of $170.49.