Struggling to collect money? A plan for unpaid invoices

The work is done and the invoices are sent, and the bank balance still does not move. Salaries, rent and suppliers are due on fixed dates, and the money owed to you arrives when it likes. Many small businesses that close were not short of customers. They were short of cash, with plenty owed to them on paper. Collecting it is a job with steps, and most businesses that struggle have no steps at all: they wait, feel awkward, and send one message when things are already bad.

Why the money is slow to arrive

Few customers set out not to pay. Most late payments have an ordinary cause, and most of the causes are on the seller's side, which is good news because you can fix them.

The habits that prevent late payment are in how to get paid faster. The rest of this post is about invoices that are already late.

First, see what you are owed

Make one list of every unpaid invoice and sort it by how late each one is, as in the picture above. Two things stand out at once. The first is the total, which is usually larger than you thought. The second is where to start: with the largest amounts and the oldest invoices. The longer an invoice stays unpaid, the less likely it is to be paid at all, so the invoice that is 60 days late needs you more than the one that is 6 days late.

Look at this list on the same day every week. Ten minutes is enough.

The plan, step by step

Use the same schedule for every customer. It removes the awkward part, because you are no longer deciding whether to chase a particular person. You are following your own rule.

The days are a guide. A shop that sells for cash will move faster, and a supplier to large companies will move slower. What matters is that every step has a date and the next one always follows.

The reminders

Keep them short: the invoice number, the amount, the due date and how to pay. Ready-made wording for each stage is in payment reminder messages.

The phone call

After a week, stop writing and call. A message is easy to ignore and a call is not. Ask two questions and then listen:

• “Did the invoice reach the right person, and is anything on it wrong?”
• “On what date will it be paid?”

Get a date, not “soon”. Then confirm it in writing the same day: “Thank you for your time today. As agreed, invoice OG/2026/0058 for $1,850.00 will be paid by October 24.” If that date passes, your next message can refer to their own promise.

The statement

When a customer has more than one invoice open, stop chasing them one at a time. Send one page with everything owed and one total. See what a statement of account is.

Stopping work

This is the step most businesses skip, and it is the one that works. If you keep delivering while old invoices stay open, the amount at risk grows every week and the customer has no reason to pay. Say it plainly and without anger: “We will start the next order as soon as invoice OG/2026/0058 is settled.”

The final notice

A final notice is a short letter or email that states the amount, the invoices it covers, a last date for payment and what you will do after that date. Only name a next step you will really take. An empty warning teaches the customer that your dates do not matter.

If the customer cannot pay

A customer who wants to pay and cannot is a different case from one who will not answer. Pressure does not create money. A plan does. Offer to split what is owed into dated parts, and ask for the first part now. Some of the money on fixed dates is better than all of it on no date. See payment plans.

If the customer disagrees with the invoice

Sometimes the silence is a complaint nobody told you about. If the customer says the work, the price or the quantity is wrong, stop the reminders for the part they question and ask them to pay the rest now. See what to do when a customer disputes an invoice.

When to get outside help

If the final date passes with no payment and no plan, you have three usual routes. Which ones are open to you, and what they cost, depends on your country.

• A collection agency. It chases the debt for you, usually for a share of what it recovers.
• A lawyer's letter. A formal demand is often enough on its own, and costs far less than a court case.
• A small claims court. Made for smaller amounts, often without a lawyer. You will need your records.

Whatever you choose, the same papers decide the outcome: the quotation or order, the invoice, proof of delivery, every reminder with its date, and the customer's replies. Keep them from the first day, not from the day things go wrong.

Sometimes the honest answer is to stop. If the amount is small and the customer has gone, the hours you spend chasing can cost more than the invoice. Ask your accountant how to record a debt you will not collect, and whether you can claim back the tax you already paid on it.

Make the next one easier

• For a new customer, ask for part of the money up front. See deposit invoices.
• Split a large job into stages, so no single invoice is big enough to hurt you. See milestone billing.
• Agree the due date, and any late fee, before the work starts. See late payment fees.
• For a customer who has paid late twice, shorten the terms or ask for payment before delivery.

The short version

• Most late payments have an ordinary cause: a late invoice, no clear date, the wrong person, or nobody following up.
• List what you are owed by age every week, and start with the largest and oldest.
• Follow one schedule for everyone: remind, call, send a statement, stop work, final notice.
• Get a date on the phone and confirm it in writing.
• Offer a payment plan to a customer who cannot pay, and get outside help for one who will not.