SmallKits

Free invoice templates and generators

Everything around getting paid, free and unlimited with no sign-up and no watermark: invoices, proformas, credit and debit notes, and reminders when payment is late.

Invoice generator

Create a professional invoice PDF in a minute.

Open invoice generator Proforma invoice generator

Ask for payment or a deposit before you deliver.

Open proforma invoice generator Credit note generator

Correct or refund an invoice with a credit note.

Open credit note generator Debit note generator

Charge extra or claim from a supplier against an invoice.

Open debit note generator Payment reminder

Write a polite, firm or final reminder for an unpaid invoice.

Open payment reminder

Which one do I need?

DocumentUse it whenIs it a tax invoice?
InvoiceYou have delivered, or are billing for work, and want to be paid by a date.Yes, when it includes the details your tax rules require.
Proforma invoiceThe customer needs a priced document before paying, or you want a deposit.No. Issue a real invoice once paid.
Credit noteAn invoice was too high: returns, refunds, discounts after sale.It corrects one; keep it with the original.
Debit noteYou need to charge more than invoiced, or claim from a supplier.It adjusts one; refer to the original.
Payment reminderAn invoice is due soon or overdue.No. It is a message that refers to the invoice.

Get paid faster

Invoices are paid faster when they are clear and easy to act on. Put the due date where it cannot be missed, show the total in large type, and include how to pay: bank details, mobile money or a payment link. SmallKits does all three by default and keeps your payment details for the next time.

From quote to receipt without retyping

Start from a quotation and turn it into an invoice in one tap. When the invoice is paid, mark it as paid or make a receipt. If something changes, issue a credit or debit note that refers to the invoice number. Every document you download is kept under Documents in your browser, so you can always find the original.

Numbering that keeps you compliant

Many countries, including all EU member states and the UK, require invoices to be numbered in an unbroken sequence. SmallKits fills in the next number for each document type automatically: INV-0001 for invoices, PF-0001 for proformas, CN-0001 for credit notes. You can change the prefix or switch to hard-to-guess numbers under Advanced settings.

Updated 2026-10-29

Frequently asked questions

Is this really free?

Yes. Every invoice tool on SmallKits is free and unlimited, with no sign-up and no watermark.

What is the difference between an invoice and a proforma invoice?

An invoice asks for payment for goods or services supplied. A proforma is a preview or request for payment in advance; it is not a tax invoice and does not record a sale.

When do I need a credit note?

Whenever you need to reduce what a customer owes on an invoice you have already issued, for example after a return or an agreed discount. Do not edit the original invoice.

Can I add VAT or GST?

Yes. Add the tax name and rate under Advanced settings; it is shown on its own line.

Can I send invoices on WhatsApp?

Yes. On phones, the Share button sends the PDF straight to WhatsApp or any other app.

How do I chase an unpaid invoice?

Use the payment reminder tool. It writes a friendly, firm or final message and opens it in WhatsApp, email or SMS.

Missing a document here?

Read only by the SmallKits team. Please do not include anything you typed into a document.