Small Business Invoice Template
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What is a small business invoice?
A small business invoice is a bill issued for goods or services that records what was supplied, the tax charged, and when payment is due under the customer's agreed terms.
Once a business sells to other businesses, the invoice stops being a note and becomes an accounting document that has to survive someone else's approval process and, eventually, an audit. What matters most is getting the tax right, quoting the customer's purchase order, and using terms consistently enough that late payment is obvious rather than debatable.
Who it’s for: Retailers, wholesalers, trades businesses, studios, service providers and any owner-operated company billing other businesses or the public.
How small businesss usually bill
- Goods sold
- One line per product with quantity and unit price. Use the customer's product code in the description if they have one — it is what their receiving system matches against.
- Services rendered
- One line per service with the period or job it covers. Describe the outcome, not the process: "Monthly grounds maintenance — March 2026" beats "labour".
- Goods plus delivery
- Put delivery in the shipping field rather than as a product line, so it is visibly not part of the goods value. Some tax regimes treat delivery differently from the goods themselves.
- Repeat and recurring billing
- For customers billed on the same cycle, keep line descriptions identical month to month and change only the period. Consistency is what lets a customer's accounts payable system auto-approve you.
What to put on a small business invoice
Beyond the fields every invoice needs, these are the ones that decide whether this kind of invoice gets approved quickly:
- Business registration and tax numbers
- Company number, VAT or GST number, or state tax registration as required where you trade. Business customers cannot reclaim tax against an invoice that omits your registration number.
- Customer purchase order number
- Larger customers match invoices to purchase orders automatically. A missing PO number is the most common reason an otherwise correct invoice is not paid.
- Tax rate and amount, shown separately
- The tax has to be visible as its own amount, not folded into the totals, for your customer to account for it and for your own filing to reconcile.
- Payment terms
- Net 30 is common for business customers but is a choice, not a default. Whatever you use, apply it consistently and put the calculated due date on the invoice.
- Ship To address
- Where goods go somewhere other than the billing address, both belong on the invoice — for delivery, and because tax can depend on the delivery location.
Example: a small business invoice with goods, delivery and tax
A supplier billing a business customer against a purchase order, with tax and delivery shown separately:
| Description | Qty | Rate |
|---|---|---|
| Oak shelving unit, 1800mm — SKU OSU-1800 | 6 | 184.00 |
| Wall fixing kit — SKU WFK-02 | 6 | 12.50 |
| Assembly on site, 2 technicians | 4 | 45.00 |
Delivery goes in the shipping field, and tax is entered as a percentage so it calculates on the subtotal and appears as its own amount. The customer's PO number goes in the PO Number field, and the delivery address in Ship To.
Getting sales tax and VAT right on the invoice
What you charge depends on what you sell, where you are registered, and where the customer or the goods are — not on what you charged last time. Sales tax in the United States is set by state and often by city or county, and generally depends on where the goods are delivered. VAT and GST regimes usually require the rate, the tax amount and your registration number to appear on the invoice for the customer to reclaim it. Different products can carry different rates within the same invoice. Because the details vary so much by jurisdiction, confirm your rates and registration obligations with your tax authority or an accountant rather than copying another business's invoice.
Making your invoices easy for a customer's system to pay
Business customers rarely pay invoices; their systems do, and a human only intervenes when something does not match. That means the purchase order number in the PO field, the exact legal entity name they gave you as the bill-to, your bank details in the same place every time, and one invoice per purchase order. Ask which day of the month their payment run happens and date invoices to arrive comfortably before it — a Net 30 invoice that misses a monthly run effectively becomes Net 45.
Billing repeat customers
For customers you bill on a cycle, keep the format stable: same line descriptions, same terms, same delivery route, only the period and the numbers change. Stable invoices get approved without review. If you need to raise prices, do it on a separate, announced invoice rather than quietly changing a rate inside a familiar line — a rate change in an otherwise identical invoice is exactly what triggers a query.
Frequently asked questions
What should a small business invoice include?
A small business invoice should include your business name, address and tax registration number, the customer's legal name and billing address, the delivery address if different, a unique invoice number, the issue and due dates, the customer's purchase order number, itemised goods or services with quantities and unit prices, the subtotal, tax shown as its own amount, delivery charges, and the total due.
How much sales tax or VAT should I charge?
That depends on your registration and on where the customer or the goods are, and rates differ by jurisdiction and sometimes by product. Enter your applicable rate in the tax field and label it correctly for your country, and confirm the rate and your registration obligations with your tax authority or an accountant.
What does Net 30 mean on an invoice?
Net 30 means the full amount is due 30 days after the invoice date. Net 14 and Net 7 work the same way with shorter windows. Always show the calculated due date alongside the term, because customers act on dates rather than on terms.
Do I have to put a purchase order number on the invoice?
If the customer issued one, yes. Most business customers match invoices to purchase orders automatically, and an invoice without the PO number will be held or returned regardless of whether everything else is correct.
Create your small business invoice
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