PRACTICAL BUSINESS DOCUMENTS

How to make an invoice: example and checklist

Learn what to include on an invoice, check a complete worked example, avoid common mistakes, and choose a practical numbering system.

An invoice tells a customer what they owe, what the charge covers, and when and how to pay. CreateBizDocs puts those details into a printable document without an account.

Make an invoice step by step

  1. Open the invoice generator and enter your business name and contact details. A logo is optional.
  2. Identify the customer. Check that the contact or department receiving the invoice is correct.
  3. Assign a unique invoice number, an issue date, and the agreed due date.
  4. List each service or product with its quantity and rate. Use descriptions that identify the work and service period.
  5. Apply any agreed discount and the appropriate tax rate. The editor applies the discount before calculating tax.
  6. Add payment instructions and terms, review the total, then download or print the PDF. Save a draft and download a backup for your records.

A complete sample invoice

Sample Spark Cleaning

hello@example.com
100 Example Lane, Sample City

INVOICE

INV-2026-022
Issued: September 23, 2026

Recipient: Example Office

Service date: September 22, 2026
Due: October 7, 2026
Payment: Agreed transfer method on file.
Terms: Payment requested within 14 days.

Fictional sample items and prices in USD
DescriptionQuantityRateAmount
Office cleaning — September 22 visit3$35.00$105.00
Interior window cleaning — 8 windows8$5.00$40.00
Agreed cleaning supplies charge1$12.00$12.00

Total: $157.00

Fictional example only. Names, dates, and prices illustrate the fields; they are not market rates. No discount or tax is included.

What each field tells the customer

Business and customer
Identify who supplied the work and who is being billed. Include relevant contact and address details.
Invoice number
A reference used to match the invoice, customer questions, and payment. Give each new invoice its own number.
Issue date and due date
The issue date records when the invoice was prepared. The due date tells the customer when payment is expected under your agreement.
Line items
Show what was provided. In the example, 3 cleaning hours × $35 = $105; 8 windows × $5 = $40; supplies add $12.
Discount, tax, and total
The example totals $157 with no discount or tax. This is an arithmetic illustration. Choose the actual tax treatment for your transaction.
How to pay
State the agreed payment method or payment link. Do not include passwords or full card details.
Notes and terms
Use Notes for the service location, job reference, or delivery date, and Terms for the agreed payment conditions.

A numbering system you can maintain

A simple sequence such as INV-2026-001, INV-2026-002, and INV-2026-003 is easy to search. A business with separate branches might use NORTH-2026-001 and SOUTH-2026-001, provided it keeps one clear record of each sequence.

CreateBizDocs suggests numbers using this browser’s local counter. A new browser, cleared storage, or a second device can restart that sequence. Always compare the suggestion with your records. See how to number invoices for revisions and backup habits.

Common mistakes to catch before sending

Before sharing, check the customer name, invoice number, dates, descriptions, rates, tax, total, and payment instructions. The editor calculates your inputs; it does not decide legal or tax requirements.