Invoice by PDFKaj
Invoice guides and tips
Practical, plain-language articles about invoicing, payments and taxes — written to be useful, never as legal advice.
- 2026-01-14 · 6 min read
How to create an invoice (step by step)
A practical walkthrough of invoice essentials: what to include, how to price a line item, which terms to set and how to send it.
Read article → - 2026-01-21 · 5 min read
Invoice payment terms explained
Net 30, due on receipt, 2/10 net 30 and end of month: what common payment terms mean, how to choose one and how to state them clearly.
Read article → - 2026-01-28 · 4 min read
How to number invoices
Invoice numbering formats that stay unique, sortable and audit-friendly — sequential, date-based and prefixed schemes with examples.
Read article → - 2026-02-04 · 4 min read
Invoice vs receipt: what is the difference?
An invoice requests payment; a receipt proves it was made. When you need one, when the other is enough, and why the distinction matters for tax.
Read article → - 2026-02-11 · 4 min read
What is an invoice?
A clear definition of an invoice, the fields every invoice carries, how invoices flow through a business and why they matter for tax records.
Read article → - 2026-02-18 · 6 min read
VAT invoice guide: what a VAT invoice must show
What makes an invoice a valid VAT invoice, how VAT-inclusive and VAT-exclusive pricing differ, and how the same document maps to GST and sales tax.
Read article →