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Every guide we've published — practical, plainly written, and organised by topic.
- 01Invoicing BasicsJun 18, 2026
How to Write an Invoice: A Step-by-Step Guide (2026)
Step-by-step guide to writing an invoice: required fields, line items, tax, payment terms, and the mistakes that cause late payments. Free templates included.
10 min read - 02Invoicing BasicsJun 16, 2026
Invoicing as a Sole Trader: What to Include & How to Get Paid
You don't need a limited company to send an invoice. What a sole trader's invoice must show, how tax works, the records to keep, and the habits that get you paid on time.
10 min read - 03Invoicing BasicsMay 25, 2026
Invoice Numbering: Best Practices & Systems
How to number your invoices correctly: sequential systems, date-based formats, prefix conventions, legal requirements by country, and mistakes that trigger audits.
9 min read - 04Invoicing BasicsMay 21, 2026
How to Invoice International Clients (Currency, Tax & Getting Paid)
Practical guide to cross-border invoicing: choosing currencies, handling FX fees, VAT reverse charge, W-8BEN forms, payment methods, and avoiding costly mistakes.
12 min read - 05Invoicing BasicsMay 17, 2026
How to Send an Invoice (Email Templates & Best Practices)
Step-by-step guide to sending invoices by email, including copy-paste email templates, subject line formulas, attachment tips, and follow-up sequences.
10 min read - 06Invoicing BasicsMay 7, 2026
How to Invoice as a Freelancer (Complete Guide)
Everything freelancers need to know about invoicing: what to include, how to set rates, payment terms, tax obligations, and getting paid on time.
11 min read
- 01Getting PaidJun 12, 2026
Payment Reminder Email Templates (Polite to Firm)
Copy-and-paste payment reminder emails for every stage — before the due date through final notice — plus subject-line tips and the tone rules that actually get invoices paid.
10 min read - 02Getting PaidJun 10, 2026
What to Do When a Client Won't Pay (Step-by-Step)
A calm, escalating plan for an unpaid invoice: reminders, a formal demand, statutory late-payment interest, mediation, and small claims — without torching the relationship.
12 min read - 03Getting PaidJun 4, 2026
How to Ask for a Deposit: Upfront & Deposit Invoices
How to request a deposit professionally, how much to ask for, how to invoice it, and the tax point a deposit can create for VAT or GST.
9 min read - 04Getting PaidMay 31, 2026
How to Charge Late Fees on Overdue Invoices
When you can charge a late fee, how much is reasonable, and how to word it so it actually holds up — for freelancers and small businesses in the US, UK, Canada, and Australia.
10 min read - 05Getting PaidMay 15, 2026
How to Get Invoices Paid Faster: 9 Proven Tips
Practical, evidence-based strategies to reduce invoice payment times. From invoice formatting to payment method choices to follow-up sequences.
10 min read
- 01Payment TermsMay 13, 2026
Invoice Payment Terms Explained (Net 15, 30, 60)
A complete reference to invoice payment terms: Net 15, Net 30, Net 60, early payment discounts, EOM, COD, and how to choose the right terms for your business.
9 min read - 02Payment TermsMay 3, 2026
What Is Net 30? Payment Terms Explained
Understand what Net 30 means on an invoice, how it works, and when to use it. Covers Net 15, Net 60, and early payment discounts.
8 min read
- 01Tax & ComplianceJun 14, 2026
Do I Need to Register for VAT? (UK Threshold Explained)
When UK freelancers and small businesses must register for VAT, what the threshold is, what voluntary registration changes, and how it affects your invoices — in plain English.
10 min read - 02Tax & ComplianceMay 11, 2026
Sales Tax on Invoices: A US Small-Business Guide
Learn when and how to charge sales tax on invoices in the US. Covers nexus, state rates, exemptions, services vs products, and invoice formatting.
10 min read - 03Tax & ComplianceMay 9, 2026
UK VAT Invoices Explained: Requirements & Examples
Everything you need to know about UK VAT invoices: mandatory fields, the 20% standard rate, simplified invoices, and HMRC compliance requirements.
11 min read
- 01Document TypesJun 8, 2026
How to Write a Quote: A Practical Guide for 2026
How to write a professional quote — scope, validity period, deposits, acceptance, change orders, the quote-to-invoice handover, and when to use an estimate instead. Includes a disclaimer: this is general information, not legal or tax advice.
10 min read - 02Document TypesJun 6, 2026
How to Write a Receipt (What to Include + Free Template)
What a receipt is, how it differs from an invoice, exactly what to include, and how to issue one quickly for cash, card, or bank payments.
9 min read - 03Document TypesJun 2, 2026
What Is a Credit Note? When and How to Issue One
A credit note cancels or reduces an invoice you've already sent. Learn when to use one, what to put on it, and how it affects your VAT or GST records.
9 min read - 04Document TypesMay 29, 2026
Invoice vs Quote vs Estimate: What's the Difference?
Quotes, estimates, and invoices look similar but do very different jobs. Learn when to send each, how binding they are, and how they fit together on a project.
9 min read - 05Document TypesMay 23, 2026
Recurring & Retainer Invoices Explained
How to structure, send, and manage recurring invoices and retainer agreements. Covers billing models, rollover policies, rate reviews, and real-world examples.
10 min read - 06Document TypesMay 19, 2026
Proforma Invoice vs Invoice: What's the Difference?
Learn what a proforma invoice is, how it differs from a commercial invoice, when to use each, and common mistakes that cause customs delays or payment confusion.
9 min read - 07Document TypesMay 5, 2026
Invoice vs Receipt: What's the Difference?
Understand the key differences between invoices and receipts, when to use each, and why it matters for your business records and taxes.
9 min read
- 01Templates & ToolsJun 18, 2026
Best Free Invoice Templates for Freelancers (2026)
The free invoice templates freelancers actually need in 2026 — by trade and by country — plus what separates a template that gets you paid from one that gets ignored.
9 min read - 02Templates & ToolsMay 27, 2026
How to Make an Invoice in Excel, Word & Google Docs
Step-by-step instructions for building an invoice in Excel, Word, and Google Docs — plus the formulas, formatting, and shortcuts that save you time.
11 min read