What to Include on a Professional Invoice

Your name or business name

This should match how you want to be paid — if your bank account is under your legal name, use that. If you trade as a business name, use that instead (or both).

Your email address

Include a contact email so clients can reach you if they have questions about the invoice. A missing contact is one of the most common reasons invoices get delayed.

Your phone number (optional)

Not always required, but useful for larger clients who may need to call to verify or discuss the invoice before approving payment.

Your business address (optional)

Needed if you're VAT/GST registered or if the client requires a physical address for their records. For most freelancers invoicing small clients, an email address is enough.

Client name or company name

Use the exact legal name of the entity you're invoicing. For companies, this is their registered business name — not just the contact person's name.

Client billing address

Large companies often have specific billing addresses that differ from their main office. Ask your client contact for the correct billing address before sending your first invoice — it avoids processing delays.

Contact person name (optional)

If you're invoicing a company, addressing the invoice to a specific person (e.g., 'Attn: Sarah Chen, Accounts Payable') can speed up internal routing significantly.

Purchase order number (if required)

Many medium and large businesses require a PO number on invoices before they can process payment. Ask your client before you start work whether they need one.

Invoice number

A unique sequential reference number (INV-001, INV-002…). Never reuse numbers. This is critical for your accounting records and for referencing in payment follow-ups: 'I'm following up on Invoice #INV-047, due yesterday.'

Invoice date

The date the invoice was issued — not the date the work was completed. Payment terms (Net 14, Net 30) are calculated from this date, so it matters for determining when payment is actually due.

Payment due date

A specific calendar date is always clearer than a term alone. Write both: 'Net 14 — due by 30 June 2026.' Clients who see a real date are more likely to pay on time.

Line item descriptions

Each deliverable, service, or product should be on its own line with a clear description. Vague descriptions like 'Design work — $3,000' invite disputes. Be specific: 'Brand identity design (logo, colour palette, typography guide) — $3,000'.

Quantity or hours

Include the number of units, hours, or deliverables. This makes the pricing transparent and defensible if a client questions it.

Unit rate

Your hourly rate, per-unit price, or per-deliverable fee. Showing the rate alongside quantity lets clients verify the maths themselves.

Line item total

Quantity × Rate for each line. Having this per-line means clients can check each item independently rather than questioning the grand total.

Subtotal

The sum of all line items before tax. Always show this separately so clients can see exactly what you're charging for the work itself.

Tax amount and rate

If you're VAT/GST registered, you must show the tax rate (e.g., 20% VAT or 10% GST) and the tax amount as a separate line. Check your local tax rules — thresholds vary by country.

Total amount due

The final number, prominently displayed. This is the most important number on the invoice — make it easy to find at a glance.

Currency

Specify the currency if there's any chance of ambiguity (e.g., USD, GBP, AUD). If you're invoicing international clients, this is essential.

Payment method accepted

List every method you accept: bank transfer, PayPal, Stripe, Wise, cheque. The more options, the faster you get paid.

Bank transfer details

If you accept bank transfer (the most common method for freelance invoices), include your full bank details: account name, account number, and routing/sort/BSB code as appropriate for your country.

Payment reference

Ask clients to use your invoice number as a payment reference when they transfer. This saves you time matching payments to invoices in your records.

Late payment policy (optional)

A note like 'A 1.5% monthly fee applies to invoices overdue by more than 14 days' creates a payment incentive without being aggressive. Include this if you agreed to it in your contract.

Notes or message to client

A short thank-you or project reference adds a human touch. 'Thank you for the opportunity to work on the Acme rebrand — please don't hesitate to reach out with any questions.' This takes 10 seconds and makes clients feel good about paying.

Your logo

Adding your business logo to invoices reinforces your brand and makes the document look polished. It also makes it instantly recognisable when clients scroll their inbox.

Project or contract reference

If the invoice relates to a specific project, proposal, or contract, referencing it ('Re: Website Redesign Project — Phase 2') makes approval easier for clients who have multiple vendors.