How to Create an Invoice: A Step-by-Step Guide
What an invoice must contain, how to number them, setting payment terms, and exporting a PDF.
Read the guideInvoicing, Quotation & Proposal Guides
Practical, jargon-free guides to invoicing clients, quoting work and writing proposals — plus honest comparisons of the free tools in this category. Written for freelancers and small businesses who want to get paid on time.
Invoicing
Creating invoices correctly, the different invoice types, and what each one is for.
Invoice Example: A Completed Invoice, Field by Field
A completed invoice with every field annotated, plus the versions that get queried and why.
Read the guideHow to Create an Invoice for Free
Four routes to a free invoice compared on speed and accuracy, plus the pre-send checks that stop invoices being queried.
Read the guideFree Invoice Templates: Choosing a Format That Actually Works
Choosing an invoice template by file format and industry, the layout decisions that affect payment speed, and why template sites hold 1,000 near-identical files.
Read the guideFreelance Invoicing: A Complete Guide
Invoicing as a freelancer end to end: your first invoice, rates, deposits, international clients and records.
Read the guideInvoice Numbering Systems That Survive an Audit
Designing an invoice numbering system that survives an audit: sequential vs dated schemes, why gaps matter, resetting annually, and what to do after a mistake.
Read the guideInternational Invoicing: Currency, Fees and Getting Paid
Invoicing across borders: choosing the currency, who pays the transfer fees, exchange rate risk, and getting paid without losing a chunk to intermediary banks.
Read the guideInvoice Record Keeping: What to Keep and For How Long
How long to keep invoices, what counts as an acceptable record, digital versus paper, and building a filing system you can actually search under pressure.
Read the guideWhat Is a Proforma Invoice?
What a proforma invoice is, when to send one, and how it differs from a quotation and a commercial invoice.
Read the guideReceipt Template: What a Receipt Must Show
What a receipt has to show, how it differs from an invoice, and when a client is entitled to one.
Read the guidePurchase Order vs Invoice
Who issues a purchase order, who issues an invoice, and why a missing PO number stops you getting paid.
Read the guidePurchase Order Template: What a PO Must Include
Writing a purchase order that a supplier can act on and an invoice can be matched against.
Read the guideBy profession
What changes on the invoice when you shoot weddings, fix pipes or bill by the sprint.
How to Invoice as a Photographer
Invoicing for photography: separating shoot fee from licensing, why usage rights belong on the invoice, and handling deposits, prints and image delivery.
Read the guideHow to Invoice for Trades and Construction Work
Invoicing for trades and construction: separating labour from materials, call-out charges, variations, retention, and documenting work that is now hidden.
Read the guideHow to Invoice for Consulting Services
Invoicing for consulting: day rates versus deliverables, billing retainers in advance, evidencing intangible work, and handling expenses and multi-stakeholder approval.
Read the guideHow to Invoice as a Graphic Designer
Invoicing for design work: bounding revisions, when source files and IP transfer, charging for concepts, and the kill fee that protects abandoned projects.
Read the guideHow to Invoice as a Software Developer
Invoicing for software work: sprint and milestone billing, what happens to code ownership on non-payment, billing for maintenance, bugs and third-party costs.
Read the guideHow to Invoice for Tutoring and Coaching
Invoicing for tutoring and coaching: session packages versus pay-as-you-go, cancellation policies that hold, billing parents for a student, and term-time scheduling.
Read the guideBy country
Tax invoice rules that actually differ: GST, VAT, e-invoicing mandates and required fields.
UK Invoice Requirements: Plain Invoices and VAT Invoices
What a UK invoice must carry, when it has to be a full VAT invoice, and the statutory interest you can charge when it goes unpaid.
Read the guideUS Invoice Requirements: What Actually Applies
There is no federal invoice format in the US. What actually governs is your contract, state sales tax, and the W-9 and 1099-NEC paperwork.
Read the guideCanada GST/HST Invoice Requirements
The CRA information requirements at each dollar threshold, why the rate depends on the buyer's province, and the $30,000 small supplier line.
Read the guideAustralian Tax Invoice Requirements
The seven details the ATO requires on a tax invoice, the $82.50 and $1,000 thresholds, and how GST rounding works.
Read the guideGST Invoice Format in India: Every Mandatory Field
The 16 fields Rule 46 requires on a GST invoice, how CGST/SGST/IGST is decided, HSN digit rules by turnover, and what breaks your buyer's input tax credit.
Read the guideUAE Tax Invoice Format: What the FTA Requires
What Article 59 requires on a UAE tax invoice, when the simplified format is allowed, and how the AED 10,000 threshold works.
Read the guideEU VAT Invoices: Reverse Charge and Cross-Border Rules
Cross-border EU invoicing: when to use reverse charge, the exact wording the VAT Directive requires, validating a customer VAT number, and what changes for non-EU sellers.
Read the guideInvoice Requirements in the Philippines After the EOPT Act
How the Ease of Paying Taxes Act changed Philippine invoicing: the sales invoice is now primary, the official receipt is supplementary, and what that means for VAT.
Read the guideNigeria VAT Invoice Format and FIRS E-Invoicing
Nigerian VAT invoice requirements, the FIRS e-invoicing mandate and its IRN and QR validation, plus how withholding tax changes what you actually receive.
Read the guideGetting paid
Payment terms, deposits, and what to do when an invoice goes unpaid.
Invoice Payment Terms Explained
What Net 30, Net 15, due on receipt and 2/10 Net 30 actually mean, and which terms get you paid fastest.
Read the guideHow to Chase an Unpaid Invoice
A calm, escalating sequence for recovering late payments without damaging the client relationship.
Read the guideThe Invoice Email: What to Write and When to Follow Up
The email that carries the invoice: subject lines that survive a full inbox, what to put in the body, who to send it to, and a follow-up sequence that works.
Read the guideDeposit and Advance Payment Invoices
Taking money before you start: how much to ask for, making a deposit non-refundable in a way that holds, and the difference between a deposit and a prepayment.
Read the guideMilestone Invoicing and Partial Payments
Splitting payment across a long project: choosing milestones that cannot be argued with, payment plans for struggling clients, and handling part payments correctly.
Read the guideWhat to Do When a Client Disputes Your Invoice
What to do when a client disputes an invoice: separating real disputes from stalling, the response that resolves most of them, and when to escalate.
Read the guideCredit Notes and Refunds: Correcting an Invoice
Correcting an invoice properly: why you never edit a sent invoice, how credit and debit notes work, handling overpayments, and the tax consequences of a refund.
Read the guideTimesheet Template for Billable Hours
Recording billable hours so the invoice they turn into is approved without a conversation.
Read the guideRetainer and Recurring Invoices
Billing the same client every month: retainer models, invoicing in advance, rollover policy, price rises, and cancelling without a fight.
Read the guideQuotations
Quoting work, setting scope and validity, and knowing which document to send.
How to Write a Quotation
How to write a price quotation that wins the work and cannot be argued with later.
Read the guideQuotation Example: A Completed Quote, Field by Field
A completed quotation with every field annotated, including the validity date most quotes leave off.
Read the guideInvoice vs Quotation: What Is the Difference?
Quote first to win the work, invoice afterwards to get paid. Where estimates and proposals fit.
Read the guideFree Quotation Templates: What Most of Them Leave Out
Word, Excel, PDF and browser quotation templates compared, the fields most free templates omit, and how to adapt one for your trade.
Read the guideHow to Get a Free Quotation That You Can Actually Compare
How to ask suppliers for a free quotation so the responses are comparable, what an RFQ should contain, and how to read the quotes you get back.
Read the guideProposals
Winning work with a proposal that covers scope, deliverables and timeline.
How to Write a Business Proposal
The structure of a proposal that wins work: executive summary, scope, deliverables, timeline and pricing.
Read the guideBusiness Proposal Format: Structure That Follows the Decision
The standard business proposal structure, why section order should follow the client's decision process, and the formatting rules that make a proposal readable.
Read the guideFree Business Proposal Templates: Choosing and Adapting One
How to choose a free proposal template by proposal type, the sections most free templates get wrong, and how to adapt one so it does not read like a template.
Read the guideAI Proposal Generator: Useful Scaffold, Dangerous Final Draft
What AI proposal generators do well, the four things they reliably get wrong, and how to use one without sending a proposal that reads like everyone else's.
Read the guideProposal Generation Software: What You Are Actually Paying For
What proposal generation software does beyond documents, the features worth paying for, and why regulated industries like financial advice need different tools.
Read the guideTools
How online generators actually work, what "free" costs you, and how the options compare.
Online Invoice Generator: How Browser Invoicing Actually Works
How browser-based invoice generation works, where your data goes, and what separates a genuine free tool from a free trial.
Read the guideFree Invoice Software: What "Free" Actually Costs You
The five business models behind "free" invoicing tools, what each one actually limits, and how to avoid the migration trap.
Read the guideQuotation Generator: Choosing a Tool That Understands Quotes
What a quotation generator has to do that an invoice tool does not — validity dates, optional items, acceptance — and how to pick one.
Read the guideFree Quotation Software: What an Account Actually Buys You
Free quoting software compared against generators and CRMs, the features that justify an account, and the one metric quoting software should give you.
Read the guideWise and Refrens Invoice Generators Compared
What the Wise and Refrens invoice generators actually do, the account and document limits attached to each, and when a no-account tool fits better.
Read the guideZoho Invoice Alternative: When You Need an Account and When You Do Not
Where a hosted invoicing account is the right answer, where a browser-only generator is, and how to tell which you need.
Read the guideWave Invoicing Alternative: Bundled Accounting or Just the Document
Wave bundles invoicing with accounting and payments. What that gets you, what it costs you, and when you need none of it.
Read the guideCalculators
Work out the number first — tax, late interest, your rate, the date payment is actually due.
VAT and GST Calculator
Add VAT or GST to a net amount, or work out the tax hidden inside a gross one, at any rate.
Read the guideLate Payment Interest Calculator
Work out the interest an overdue invoice has accrued, and what you can defensibly add to it.
Read the guideFreelance Hourly Rate Calculator
Work backwards from the income you want to the rate that produces it, after tax, costs and unbillable time.
Read the guidePayment Due Date Calculator
Turn Net 30, Net 60 or end-of-month terms into the actual date payment falls due.
Read the guideWriting
Punctuation, wording and the language side of quoting — including actual quotations.
Quotation Marks: The Rules, With Examples
How quotation marks work in American and British style, where the punctuation goes, and the rules for quoting inside business documents.
Read the guideQuotations About Change, With the Attributions Checked
Quotations about change, grouped by what you actually need them for, with attributions checked and the commonly misattributed ones flagged.
Read the guideRandom Quote Generators: How They Work, and Their Attribution Problem
What random quote generators and quote meme makers do, the attribution and licensing problems they create, and how to build one yourself.
Read the guideFree templates
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