Free Invoice Generator

#What a legally valid invoice must contain

Requirements differ by jurisdiction, but the following elements are near-universal and are all included in this generator:

• The word Invoice, so it cannot be mistaken for a quote or a statement
• A unique sequential number with no gaps in the series
• Issue date and an explicit due date
• Your business name, address and contact details
• Your tax registration number where you are registered for VAT, GST or sales tax
• The client's name and billing address
• A clear description of each item, with quantity, unit price and line total
• Subtotal, tax charged (stated separately with the rate), and total due
• Payment instructions and terms

If you are VAT or GST registered, showing tax as a separate line is a legal requirement, not a formatting preference — your client cannot reclaim input tax without it.

#Numbering invoices correctly

Use an unbroken sequence. Tax authorities in most jurisdictions require that invoice numbers run continuously so that missing numbers cannot conceal unreported revenue.

Practical schemes that work:

• 2026-001, 2026-002 — year prefix, resets annually, easy to reconcile
• INV-1041 — a single running series across all years
• ACME-007 — client-coded, useful if you invoice a few large accounts

Never delete or reuse a number. If you issue an invoice in error, issue a credit note referencing the original rather than deleting it.

#Payment terms that actually get you paid faster

Analysis of large invoice datasets consistently shows the same effects, and they are larger than most freelancers expect:

Shorter terms outperform. Net 14 is paid faster than Net 30, and not merely by the sixteen-day difference. Shorter terms signal that payment is expected promptly and place the invoice higher in an accounts payable queue.

Write the due date as a calendar date. "Due 12 September 2026" outperforms "Net 30" because it requires no arithmetic from the person approving it.

Offer an early payment discount. Terms of 2/10 net 30 — 2% off if paid within ten days — reliably accelerate payment. The 2% is cheap relative to the cost of chasing.

State a late fee. Even where you do not intend to enforce it, an explicit late fee clause measurably reduces days sales outstanding. Check what your jurisdiction permits; many cap the rate.

Invoice immediately. The strongest predictor of slow payment is a slow invoice. Send it the day the work is delivered, while the value is fresh in the client's mind.

#Practical details that reduce disputes

• Reference their purchase order number. In larger companies an invoice without a PO reference frequently cannot be paid at all, regardless of who approved the work.
• Address it to accounts payable, not your contact. Your day-to-day contact rarely processes payments. Ask for the AP email address at the start of the engagement.
• Keep descriptions specific. "Consulting services — $8,000" invites scrutiny. "Brand identity design — discovery, three concepts, final artwork" does not.
• Match the language of the contract. If the statement of work described three milestones, invoice by those milestones.

#How this generator works

Everything runs in your browser. Your business details, client list and line items are stored only in your own browser's local storage, and the PDF is rendered on your device. No data is transmitted to SkyZap or anyone else — which matters when the document contains your client's name, your rates and your bank details.

The Download PDF button opens a print-optimised version of the invoice and triggers your browser's print dialog. Choose "Save as PDF" as the destination. This produces a genuine, selectable-text PDF rather than an image, which is what accounts payable systems need in order to parse it.

The Save as HTML button gives you a standalone file you can archive or email directly.

#Currency and international invoicing

The generator supports thirty currencies with correct symbol placement and formatting. When invoicing across borders:

• Invoice in the currency named in your contract, not your home currency
• State clearly who bears bank charges — "all bank charges for the payer's account" avoids a common $25 to $50 shortfall
• For EU cross-border B2B supplies, note the reverse charge where applicable and include both VAT numbers
• Consider a foreign-currency account or a service like Wise if you invoice internationally regularly; correspondent bank fees on wire transfers routinely exceed 3%

#Setting the rate on the invoice

If you are not yet confident that your rate covers tax, unbillable time and business costs, work it out first with the freelance rate calculator. Most independent workers discover their effective hourly rate is 30% to 40% below what they need to charge.