An invoice mailed in the first week of October has a decent chance of sitting unpaid until the week before Thanksgiving. Usually the customer is not broke and you did nothing wrong. The last quarter of the year is when the people who owe you money start managing their cash instead of yours, and a two person outfit feels that before anyone else does.
Most of the fix has to happen before the work starts, which is an irritating thing to hear in October. The rest is a sequence: what to do first, what to do when that fails, and the point where asking politely stops being the right move.
Why the calendar does this to you
A commercial customer on net 30 (the invoice falls due thirty days after you send it) usually cuts checks twice a month. In an ordinary month you miss one run and land in the next, and nobody notices. In late November the working days thin out, the person who signs is off, and the run that would have caught you slides. Two missed runs is six weeks. Nobody decided anything.
Households do the opposite. They pay quickly in the fall because they want work finished before company arrives, then go quiet in January when the credit card bill lands. If most of your jobs are in people's houses, your squeeze is late winter, not late fall. Knowing which shape your year has is worth more than any collection tactic, because it tells you which month to be holding cash for.
The paperwork that settles the argument later
Nearly every payment fight I have watched came down to a document nobody wrote. Five of them, and none take long.
- A signed scope. One page, plain sentences, what is included and what is not.
- Change orders in writing, even by text message. A text carrying a price and a yes is a record.
- A deposit that covers your materials. If you are floating the customer's project out of your own account, you are a lender with none of a lender's protections.
- The customer's legal name. If you contracted with a company, the company owes you. If you contracted with a person who happens to own a company, the person owes you. Those are different cases, and the difference decides who you name when you file.
- A due date printed as an actual date. Net 30 invites an argument about which day the clock started.
What actually moves a late invoice
Call whoever codes the invoice, not whoever hired you. In most companies those are two different people, and the one who hired you has no idea whether it was paid. Ask a single question: is it in the system. The most common answer by a wide margin is that it never got entered, or it got entered without a purchase order number and stopped there.
Resend it carrying the same invoice number. A new number looks like a new charge and restarts the clock. Attach a statement showing everything open and everything already paid, because a statement gets forwarded to accounting and a nagging email does not. If the customer is genuinely short, offer to split it. Half now beats the whole thing in March, and how they answer tells you something true about them.
When asking stops being the move
Send one final demand in writing carrying a specific date, then honor the date. A deadline you let slide teaches the customer exactly what your deadlines are worth.
If the work was done on real property, most states let a contractor or supplier record a mechanic's lien, which is a claim against the property that has to be cleared before it can be sold or refinanced. The deadlines are short, they are counted differently in every state, and some states require a preliminary notice at the start of the job before you are allowed to file at the end. That is a call to make in week one of a large job, not in month four.
Small claims court is the other route and it is more usable than people expect. You file at the county courthouse, pay a modest fee, and appear yourself. No attorney is required and in some states none is allowed. Each state sets its own dollar ceiling and they vary widely, so check yours before assuming your amount is too big to qualify. Bring the signed scope, the invoice, and the messages. These get decided on documents.
Say the terms out loud before you start
All of the above is easier if the money conversation happens at the estimate rather than at the invoice. Two sentences, said in person, while the customer is still deciding whether to hire you. Here is the deposit. Here is when the balance is due. Here is what happens if it goes past that date. Nobody in the history of the trade has hired a different contractor over that sentence. Plenty of customers have quietly assumed a different answer because it was never said.
Then write those same two sentences at the bottom of the estimate, in the same words you used out loud. Four months later, when a payment is late, you are not introducing a rule. You are pointing at one the customer already read and signed. That changes the tone of the call entirely, and it is the whole difference between a reminder and an accusation.
It filters, too. A customer who flinches at a written due date is telling you something useful about how the last contractor got paid.
The slow payers worth keeping
Some of the best customers pay late every single time. A hospital or a school district is not going to change its process because you asked nicely. If the work is steady and the money always arrives, the answer is to price the delay in and hold enough cash to ride it out, not to fire them. Pricing the delay in is a cash problem rather than a collections problem, which is exactly what the free counseling the Small Business Administration funds exists to work through, and almost nobody in the trades uses it.
What separates the customers you keep from the ones you drop is not speed. It is whether they tell you the truth about when.