Invoicing, explained by someone who has read a lot of invoices.
Short, specific guides on the paperwork side of running a service business. No filler, no motivational opening paragraph, and a real answer in the first two sentences of every article.
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Start with the question you actually have
These are written for the person doing the work and the billing, not for a finance department. Where a rule differs by country we say so instead of pretending there is one global answer, and where you should ask an accountant we say that too.
How to write an invoice that gets paid
The nine things every invoice must contain, how to word the lines so they do not get queried, and the small mistakes that quietly delay payment.
Read the guide →How to chase an unpaid invoice
A four stage process with the exact wording for each message, from the polite nudge to the final notice, and the point where chasing stops being worth it.
Read the guide →Quote, estimate or invoice: which to send
A quote is a price you are committing to. An estimate is a considered guess. Sending the wrong one is how a fixed price argument starts.
Read the guide →Invoice payment terms explained
What net 7 and net 30 really mean, which to use for domestic against commercial work, and why due on receipt is the weakest wording on an invoice.
Read the guide →How to number your invoices
Sequential, never reused, never deliberately skipped. What to do about prefixes, yearly restarts and the invoice you had to cancel.
Read the guide →How to take a deposit
How much to ask for, when to ask, the sentence that makes customers say yes, and how to show it on the final invoice.
Read the guide →How to send an invoice on WhatsApp
It gets read in minutes rather than days. The trick is sending a real PDF with a professional message, not a photo of a notepad.
Read the guide →Invoice or receipt: which do you give?
An invoice asks for money. A receipt confirms it arrived. Give the wrong one and your customer cannot claim, insure or reclaim anything.
Read the guide →How to write a quote that wins work
The scope wins the job and the exclusions protect you. Most quotes get one of those right and lose money on the other.
Read the guide →Eight ways to get paid faster
Ordered by effect, not by effort. The first one is free, takes no time, and beats every clever payment term you could write.
Read the guide →Invoicing as a sole trader
You can usually invoice under your own name from the first job. What differs by country is registration and tax, not the document.
Read the guide →Late payment fees and interest
The wording on the invoice does the work, not the charge itself. Applying it to the wrong customer costs more than it collects.
Read the guide →When a customer disputes an invoice
Most disputes are about surprise rather than money. Find out which one you have before you decide what to defend.
Read the guide →Record keeping for a small trade
The bar is lower than you think and the failures are always the same two. Neither of them is about accounting knowledge.
Read the guide →What you will not find in these guides
Most invoicing advice online is padded to reach a word count and hedged so it can never be wrong. These are written the other way round. Each one opens with the answer, then explains it, and stops when the useful part is finished.
Three rules we hold ourselves to. No invented statistics, because a number nobody can source is worse than no number. No pretending tax and contract law are the same everywhere, because they are not, and telling you to ask an accountant in your own country is the honest answer. And no case studies with plausible sounding names attached, because we would have to make them up.
About these guides
Who writes them?
The team behind Invoice Local, which is a small operation rather than a content department. That is also why there are a handful of thorough guides rather than a hundred thin ones.
Is this advice I can rely on for tax or legal questions?
No. These guides cover practice rather than law, and anything touching tax registration, contract terms or debt recovery differs by country and sometimes by state. Use them to know what to ask, then ask someone qualified where you trade.
Do the guides only apply if I use Invoice Local?
No. Everything in them works with a paper duplicate book, a spreadsheet or a competitor app. The app is mentioned where it is genuinely relevant and left out where it is not.
Reading about invoices is not sending one
Everything in these guides is built into the app already. Open it, put your business name in, and the next invoice is thirty seconds of work.