Business Tools Guides & Tutorials

Articles, guides and tutorials about business tools - invoices, quotations, receipts and business cards. Featured reading: How to Add a Payment QR Code to an Invoice; How to Invoice as a Freelancer: A Complete Guide; How to Number Invoices: Formats, Rules and Examples; How to Write an Invoice: Step-by-Step Guide with Example.

How to Add a Payment QR Code to an Invoice
Business Tools

How to Add a Payment QR Code to an Invoice

How payment QR codes work, which methods support them, and how to add one to an invoice.

Sep 30, 2026·4 min read
How to Invoice as a Freelancer: A Complete Guide
Business Tools

How to Invoice as a Freelancer: A Complete Guide

From agreeing terms to chasing late payments - invoicing for freelancers, start to finish.

Sep 30, 2026·5 min read
How to Number Invoices: Formats, Rules and Examples
Business Tools

How to Number Invoices: Formats, Rules and Examples

The rules every invoice numbering system should follow, with formats you can copy.

Sep 30, 2026·4 min read
How to Write an Invoice: Step-by-Step Guide with ExampleFeatured
Business Tools

How to Write an Invoice: Step-by-Step Guide with Example

What goes on an invoice, in what order, with a complete worked example - and how to make one free as a PDF.

Sep 30, 2026·10 min read
Invoice Payment Terms Explained: Net 30, Due on Receipt and More
Business Tools

Invoice Payment Terms Explained: Net 30, Due on Receipt and More

What the common payment terms mean, which to use, and how to write them so you get paid on time.

Sep 30, 2026·5 min read
Invoice vs Receipt: What's the Difference?
Business Tools

Invoice vs Receipt: What's the Difference?

An invoice asks for payment; a receipt proves it was made. When to use each, side by side.

Sep 30, 2026·4 min read
Overdue Invoice Email Templates: 6 Payment Reminders That Work
Business Tools

Overdue Invoice Email Templates: 6 Payment Reminders That Work

Six payment reminder emails to copy, from a friendly nudge to a final notice.

Sep 30, 2026·5 min read
Quote vs Estimate vs Invoice: Differences Explained
Business Tools

Quote vs Estimate vs Invoice: Differences Explained

Which price document to send when - and how to turn an accepted quote into an invoice.

Sep 30, 2026·4 min read
What to Include on an Invoice: Checklist and Rules by Country
Business Tools

What to Include on an Invoice: Checklist and Rules by Country

The universal invoice checklist, and the extra fields tax-registered businesses need in six countries.

Sep 30, 2026·7 min read
How to use Free Business Card Maker online, free
Business Tools

How to use Free Business Card Maker online, free

A business card still does a job no LinkedIn profile does: it puts your name in someone's hand at the moment they meet you.

Aug 20, 2026·5 min read
Email Signature Generator Online - HTML
Business Tools

Email Signature Generator Online - HTML

An email signature is the small block at the bottom of every message you send - and because it appears on every message, it is one of the most-seen pieces of

Aug 20, 2026·5 min read