Question 1

Is BillOak really free to use?

Accepted Answer

Yes. BillOak is 100% free with no hidden fees, subscriptions, or signup required. Create, customize, and download unlimited invoices at no cost.

Question 2

Do I need to create an account?

Accepted Answer

No account or signup is needed. Just open BillOak in your browser and start creating your invoice right away.

Question 3

Is my invoice data safe and private?

Accepted Answer

Yes. All your invoice data is stored locally in your browser — it never leaves your device or gets uploaded to our servers.

Question 4

What currencies does BillOak support?

Accepted Answer

BillOak supports over 150 currencies from around the world, so you can invoice clients anywhere with the correct currency symbol and formatting.

Question 5

Can I customize my invoice with a logo and colors?

Accepted Answer

Absolutely. You can add your company logo, choose an accent color, pick a font, and select from multiple professional PDF layouts.

Question 6

What file format can I download my invoice in?

Accepted Answer

You can download your invoice as a professional, print-ready PDF file with a single click.

Question 7

Can I create quotes, credit notes, or purchase orders too?

Accepted Answer

Yes. Besides invoices, BillOak lets you generate quotes, credit notes, and purchase orders using the same easy editor.

Question 8

What languages does BillOak support?

Accepted Answer

BillOak is available in 21 languages, including English, Spanish, French, German, Chinese, Japanese, Arabic, and more. You can switch languages anytime from the language selector.

Question 9

What is an invoice?

Accepted Answer

An invoice is a document a seller sends to a buyer to request payment for goods or services provided. It lists what was sold, the quantity and price, any taxes, the total amount due, and the payment terms.

Question 10

Is an invoice a bill or a receipt?

Accepted Answer

An invoice is a bill — it's sent before payment to request money that's owed. A receipt is different: it's given after payment as proof the transaction is complete.

Question 11

What's the difference between an invoice and a credit note?

Accepted Answer

An invoice requests payment for goods or services. A credit note does the opposite — it reduces or cancels an amount already invoiced, typically for a return, discount, or billing correction.

Question 12

What are the main types of invoices?

Accepted Answer

The most common types are standard invoices (request payment), credit notes (reduce a previous invoice), quotes or estimates (proposed pricing before work starts), and purchase orders (a buyer's formal order request). BillOak supports all four.

Question 13

Who issues an invoice, the buyer or the seller?

Accepted Answer

The seller or service provider issues the invoice to the buyer. Since it's a request for payment, it always comes from whoever is owed the money.

Frequently Asked Questions