Invoicing guides
Straight answers on invoices, payment terms, tax and getting paid. Each guide links back to the free generator when you're ready to make one.
12 Common Invoicing Mistakes That Delay Payment
The invoicing mistakes that most often delay payment, from missing PO numbers and vague descriptions to wrong tax and late sending, and how to fix each one.
Rent Invoice: How Landlords Bill Tenants (With Example)
How landlords and property managers can invoice rent: what to include, rent periods, utilities and late fees, deposits, rent receipts, and commercial rent with VAT.
Tutoring Invoice: How Tutors Bill Parents and Students
How private tutors should invoice: per lesson, monthly or term billing, packages, cancellation policies, online tutoring, and invoice examples parents understand.
Invoice Terms and Conditions: Examples You Can Adapt
What to put in the terms and conditions on an invoice: payment terms, late fees, disputes, ownership and deposits - with example wording for different businesses.
What Is a Tax Invoice? Australia, New Zealand, India and the UK
What a tax invoice is, when you need to issue one, and what it must include in Australia (GST), New Zealand, India and the UK, with a clear example.
Accounts Receivable Aging: How to Track Who Owes You What
What an accounts receivable aging report is, how to build a simple one in a spreadsheet, how to read it, and how to use it to get paid faster.
How to Invoice International Clients: Currency, VAT and Getting Paid
How to invoice clients in other countries: which currency to use, exchange rates, VAT reverse charge, export of services, bank details (IBAN, SWIFT) and payment fees.
How to Correct, Cancel or Void an Invoice
What to do when an invoice is wrong: correcting unsent invoices, credit notes for sent ones, cancelling duplicates, fixing tax errors, and what never to do.
Personal Trainer Invoice: Sessions, Packages and Memberships
How personal trainers and fitness coaches should invoice: single sessions, prepaid packages, online coaching, cancellations, and keeping track of sessions used.
Graphic Design Invoice: How to Bill for Design Work
How graphic designers should invoice: project fees, revision rounds, usage rights and file handover, kill fees, rush fees and example line items for design work.
Invoice Fraud and Fake Invoice Scams: How to Protect Your Business
How invoice fraud works (fake invoices, changed bank details, email compromise), the warning signs, and simple steps to protect your business and clients.
Retainer and Recurring Invoices: How to Bill Monthly Clients
How to invoice monthly retainers and recurring services: billing in advance vs arrears, what to put on the invoice, unused hours, rollover and automation.
Construction Progress Billing: Schedule of Values, Retainage and AIA Invoices
How progress billing works in construction: schedule of values, percent complete, retainage, change orders, lien waivers and a worked progress invoice example.
Small Claims Court for an Unpaid Invoice: A Practical Guide
When to take an unpaid invoice to small claims court, limits by state, the steps from demand letter to judgment, evidence to bring, and collecting after you win.
Invoice Date vs Due Date (and Tax Point): What Each Means
The difference between an invoice date, a due date, a supply date and a tax point, which one starts the payment clock, and how to date invoices correctly.
How Long to Keep Invoices and Receipts (US, UK, EU, Australia)
How long businesses should keep invoices and receipts for tax purposes in the US, UK, EU and Australia, plus what to keep, how to store it and when to shred.
Car Repair Invoice: What Auto Shops Must Include
How to write an auto repair invoice: parts, labor, VIN and mileage, used vs new parts, estimates and authorizations, warranty terms and state rules.
What Is E-Invoicing? Mandates, Formats and What Small Businesses Need to Know
E-invoicing explained: how structured e-invoices differ from PDFs, which countries now require them (France, Germany, Belgium, Poland) and what it means for you.
Early Payment Discounts (2/10 Net 30): Are They Worth Offering?
How early payment discounts like 2/10 Net 30 work, what they really cost as an annual rate, how to show them on invoices, and when they're worth it.
Consulting Invoice: How Consultants Bill Clients (With Examples)
How consultants should invoice: day rates, hourly and project fees, retainers, expenses and travel, invoicing large corporate clients, and example line items.
Invoice Financing Explained: Discounting, Factoring and Alternatives
How invoice financing works, the difference between invoice discounting and factoring, typical costs, eligibility, and cheaper ways to fix cash flow first.
Deposit Invoice: How to Ask for Payment Upfront
How to invoice for a deposit or upfront payment: how much to ask for, wording, how to show the deposit on the final invoice, refundability and tax.
Hourly vs Project Pricing: Which Should You Put on Your Invoice?
The real trade-offs between hourly and fixed-project pricing for freelancers and small businesses, how each looks on an invoice, and hybrid options that work.
How to Invoice for Partial Payments and Show the Balance Due
How to handle partial payments on invoices: recording what's been paid, showing the balance due, payment plans, and when to issue new invoices versus updating balances.
Photography Invoice: Session Fees, Usage Rights and Examples
How photographers should invoice: session and creative fees, image licensing and usage rights, prints, travel, retainers for weddings, and example line items.
1099 Contractor Invoicing: What to Include and the New $2,000 Threshold
How US independent contractors should invoice clients, what W-9 and 1099-NEC mean for your invoices, and the 1099 threshold change to $2,000 from 2026.
Invoice vs Statement: What's the Difference?
An invoice bills one sale; a statement summarizes a customer's invoices and payments over a period. When to send statements and what they should show.
Late Payment Interest in the UK: How to Claim Statutory Interest
How UK businesses can claim statutory interest (8% plus base rate) and fixed compensation on late B2B invoices, with worked calculations and wording.
How to Send an Invoice by Email (With Templates)
How to email an invoice so it gets opened and paid: subject lines, what to write, PDF naming, who to send it to, and copy-paste email templates.
PO Number on an Invoice: What It Is and Where to Put It
What a PO number is, why corporate clients reject invoices without one, exactly where it goes on your invoice, and what to do if you don't have one.
What Does 'Due on Receipt' Mean on an Invoice?
Due on receipt means pay as soon as you get the invoice. When to use it, when not to, how clients actually treat it, and better wording to get paid fast.
What Is Invoice Factoring? How It Works, Costs and Risks
Invoice factoring explained: how selling your invoices for an advance works, typical fees and advance rates, recourse vs non-recourse, and when it's worth it.
Cleaning Services Invoice: Template Tips and Examples
How to invoice for house cleaning and commercial cleaning: per visit, hourly and flat-rate pricing, supplies, add-ons, recurring clients and getting paid on time.
What Is a Credit Note? When and How to Issue One
A credit note reduces or cancels an invoice. When to issue one (errors, returns, discounts), what it must show, examples, and how it affects VAT and your books.
Sales Tax on Invoices (US): When to Charge It and How to Show It
When US small businesses must charge sales tax, how nexus works, whether services are taxable, and how to show sales tax correctly on an invoice.
Invoice vs Purchase Order: What's the Difference?
A purchase order is the buyer's order; an invoice is the seller's request for payment. How they fit together, three-way matching, and why your PO number matters.
Web Developer Invoice: Line Items, Milestones and Examples
How web developers should invoice: milestone billing, hourly support, hosting and domain pass-throughs, maintenance retainers, and example line items.
How to Invoice for Hours Worked (Hourly Invoice Guide)
How to bill hourly work: tracking time, showing hours and rates on the invoice, rounding, minimum charges, and a worked example with timesheet detail.
Commercial Invoice for International Shipping: What Customs Needs
What a commercial invoice is, when you need one for international shipping, every field customs expects (HS codes, origin, Incoterms), and common mistakes.
How to Charge Late Fees on Invoices (and How Much)
How to add late payment fees or interest to invoices: typical rates, wording examples, legal limits in the US and UK, and when charging them backfires.
Invoice vs Bill: Is There a Difference?
An invoice and a bill are the same document seen from opposite sides of a sale. How accountants use each word, and when the difference matters.
VAT Invoice Requirements in the UK: Full, Simplified and Modified
What a UK VAT invoice must show according to HMRC, when you can use a simplified VAT invoice (£250 or less), deadlines, and common mistakes.
How to Invoice as a Contractor: Independent and Trade Contractors
How independent contractors and trade contractors should invoice clients: required details, labor and materials, deposits, change orders, retainage and 1099s.
Landscaping Invoice: What to Include (With Examples)
How to write a landscaping or lawn care invoice: line items for labor, materials and equipment, recurring maintenance billing, deposits and seasonal contracts.
Payment Reminder Email Templates for Unpaid Invoices
Copy-and-paste payment reminder emails for every stage of an unpaid invoice, from a friendly nudge to a final notice, plus subject lines that get opened.
What Is a Proforma Invoice? Meaning, Uses and Example
A proforma invoice is a preliminary bill sent before a sale is final. What it's for, what to include, how it differs from a commercial invoice and a quote.
Invoice vs Quote vs Estimate: What's the Difference?
A quote proposes a fixed price, an estimate is a best guess, and an invoice asks for payment. When to use each, what to include, and how they connect.
What Does Net 30 Mean on an Invoice?
Net 30 means payment is due 30 days after the invoice date. How to calculate the due date, Net 30 vs Net 30 EOM, pros and cons, and when to use it.
What Is an Invoice? Meaning, Purpose and Examples
What an invoice is, what it's used for, how it differs from a bill, receipt and quote, and the main types of invoice with examples.
Unpaid Invoice? What to Do, Step by Step
A calm, escalating plan for unpaid invoices: reminders, calls, pausing work, late fees, demand letters, collections and small claims court.
Invoice Templates vs Invoicing Software: Which Do You Need?
When a free invoice template or generator is enough, when to switch to invoicing or accounting software, and what each actually costs you in time.
How to Invoice as a Freelancer (and Actually Get Paid on Time)
A practical freelancer invoicing guide: what to put on the invoice, when to send it, deposits, hourly vs project billing, tax and chasing late clients.
Invoice Payment Terms: Examples, Meanings and Which to Use
Net 30, Net 15, due on receipt, 2/10 Net 30, EOM and more explained with examples, plus how to choose payment terms that get you paid on time.
Invoice vs Receipt: What's the Difference?
An invoice asks for payment; a receipt proves it was made. When to send each, what goes on them, and whether you need both.
Invoice Numbers: What They Are and How to Number Invoices
What an invoice number is, why it must be unique and sequential, five numbering systems with examples, and how to fix a gap or duplicate.
What to Include on an Invoice: The Complete Checklist
Every detail an invoice needs, which ones are legally required in the US, UK, EU and Australia, and the optional extras that get you paid faster.
How to Write an Invoice (With a Worked Example)
How to write an invoice that gets paid: the 10 details to include, a line-by-line worked example, payment terms that work, and the mistakes that delay payment.