A simple invoice example you can copy and adapt

What does a simple invoice look like?

A simple invoice identifies the seller and customer, gives the document a unique number, describes the work, and states the amount due, payment date and payment instructions. The example below shows how those parts fit together for one small service job.

This is a fictional example with illustrative prices. No tax, deposit or discount applies to its calculation. It is not a claim that your work is tax-free. Use your own business details and the requirements that apply where you trade.

If you would rather fill in a form, open the free invoice generator. If the layout is your main concern, browse invoice designs before choosing one.

A service invoice for $185.00

INVOICE INV-2026-014
From: [Your business name, address and contact details]
Bill to: [Customer's billing name and address]
Job: Internal door adjustment at [job address]
Service date: September 16, 2026
Invoice date: September 16, 2026
Payment due: September 30, 2026
Currency: USD

Payment instructions: Pay $185.00 USD by September 30, 2026 using [agreed payment method and details]. Use INV-2026-014 as the payment reference. For questions, contact [your business email or phone].

The calculation is deliberately easy to check: 2 × 75 = 150; 150 + 35 = 185. If your total differs, look for an extra quantity, a discount or a tax rate before changing the final number. Fix the underlying line so the document still adds up.

A blank invoice outline to copy

Paste this outline into your document editor and replace every bracketed field. Keep a blank master separately from the files you send. Duplicating the last customer's invoice is quick, but it also makes it easy to leave their name or payment reference behind.

INVOICE [unique number]
From: [business identity, address, contact details]
Bill to: [customer billing identity and address]
Job or order reference: [reference]
Service date: [date]
Invoice date: [date]
Due date: [agreed date]
Currency: [currency]

[Description] · [quantity and unit] × [rate] = [line amount]
[Repeat for each item]

Subtotal: [amount]
Tax, if applicable: [rate and amount]
Total: [amount]
Payments already received, if any: [amount]
Balance due: [amount]

How to pay: [agreed method, payment details and reference]
Questions: [contact details]

This outline is a starting structure, not a downloadable spreadsheet with formulas. Calculate and check the totals yourself, or use the generator to calculate its line items. For a PDF workflow, follow how to make an invoice for free.

Change the detail to match what you sold

For an hourly service, show hours and the agreed hourly rate. For a fixed-price job, show the agreed scope and one job price. For materials billed separately, give a description and quantity the customer can identify. Do not add a second charge for materials already included in a fixed price.

A customer with several sites needs the job address as well as the billing address. A business customer may need its own order reference. A private customer may care more about the service date and a plain description of the repair. Keep information that helps the payer identify and approve the work.

Keep the invoice with your business records. The IRS recordkeeping guide includes invoices among supporting documents. That guidance concerns records, not a universal US invoice format or sales-tax rule.

The payment date in the example reflects a fictional agreement. Use the date agreed with your customer, rather than treating a sample's two-week interval as a rule. Keep the accepted price and any agreed changes with your job records so you can explain the bill later.

Check the final document, not just the template

Read the PDF from top to bottom once as the customer: is it addressed to the right person, does it name the job, and can they tell exactly how much to pay? Then read it as the person keeping the books: is the number unique, do the lines add up, and does the saved filename match the document?

An invoice requests payment. Sending it does not show that payment has arrived. Keep the payment record when the customer pays and avoid labelling an unpaid invoice “Paid”. If you need to correct an invoice already sent, explain the correction to the customer and retain a record of what changed.

Once the document is ready, use the email template for sending an invoice. A short message naming the job, amount and due date is enough to make the attachment understandable without repeating the entire invoice.