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Practical Guide·11 min read

Can’t Pay vs Won’t Pay: How to Tell the Difference and What to Do Next

Published 25 September 2026

An overdue invoice tells you one thing.

You have not been paid.

It does not tell you why.

One customer may genuinely be struggling and trying to work out how they can pay you.

Another may have the money available but be avoiding the conversation, breaking promises or continually moving the goalposts.

On the surface, both accounts look exactly the same.

They are overdue.

But the way you deal with them may need to be completely different.

And that is where credit control becomes about much more than simply asking somebody to pay an invoice.

Credit control is rarely just “chasing”

At first glance, chasing an overdue invoice sounds straightforward.

Send a reminder.

Make a phone call.

Ask when you will be paid.

But once you start looking properly, there is usually much more to consider.

Is the customer genuinely struggling?

Is there a problem with the invoice?

Has somebody forgotten to approve it?

Has a dispute suddenly appeared?

Should you agree a payment plan?

If you do, what can the customer realistically afford?

Has a payment already been promised?

How many missed promises should you accept before the approach changes?

And throughout all of this, how do you get paid without unnecessarily damaging a customer relationship you may have spent years building?

Good credit control involves judgement.

You are constantly deciding what the customer is telling you, what their behaviour is showing you and what needs to happen next.

That is why effective credit control needs more than reminders.

It needs consistency, good records and, very often, a real conversation.

Credit control taking more time than you expected?

If staying on top of the ledger is becoming another job in itself, our Pricing Estimator gives you an instant guide to what outsourced credit control support could look like.

Sometimes, you need a human at the end of the phone

There is more automation in credit control than ever before.

Automated reminders, chasing software and AI can all be useful.

They can make sure invoices are not forgotten.

They can help you stay consistent.

They can keep a written record of the messages that have been sent.

But they cannot replace every conversation.

An email gives you words on a screen.

A phone call gives you tone.

You can hear hesitation.

You can ask another question.

You can tell when somebody sounds uncomfortable.

And sometimes you hear something that would never have been written in an email.

A customer might say:

“I’m really sorry. We’ve had an awful month and I’m struggling a bit. Could you give me until Friday?”

For some people, saying that out loud is difficult enough.

Writing it down and pressing send can feel much harder.

Financial difficulty can be deeply personal.

People do not always want to put problems within their business, worries about money or personal circumstances into an email.

Sometimes a conversation about an overdue invoice ends up involving far more than the invoice itself.

A customer may have lost a major client.

They may be waiting for one of their own customers to pay them.

They may have had an unexpected cost.

There may be something happening personally that has temporarily affected the business.

Those things do not make the invoice disappear.

But they give you context.

And context helps you decide what to do next.

That human conversation is also one of the ways you protect the relationship.

You are no longer simply sending another demand for money.

You are listening, understanding what is happening and then deciding how the account should be handled.

That does not mean being a pushover.

It means making an informed decision.

One of our simplest practical credit control tips is still one of the most useful:

Pick up the phone.

There is a person on both sides of the invoice

It is easy to talk about debt as if it is simply a number on an aged debtor report.

It is not.

The business waiting to be paid may have wages, suppliers, tax and its own commitments to meet.

The person being contacted may be dealing with financial pressure you know nothing about.

Good credit control has to recognise both.

The creditor is entitled to be paid.

The customer should still be treated fairly and with respect.

Those two things are not in conflict.

Handling the conversation with care does not mean allowing the debt to drift.

And being clear about what is owed does not mean becoming aggressive.

It means understanding the situation, agreeing realistic next steps where that is appropriate and knowing when a firmer approach is needed.

Behind every invoice is a person.

In fact, there are usually two.

You still need things in writing

Having a conversation does not mean abandoning written communication.

You need both.

The phone call helps you understand what is happening.

The written record helps everybody remember what was agreed.

If the customer promises to pay £1,000 on Friday, confirm that in an email.

If you agree a payment plan, write down the payment amounts and dates.

If a dispute is raised, record what the problem is and who is dealing with it.

If somebody says the invoice is waiting for approval, make a note of who needs to approve it and when you expect an update.

That way, the next conversation does not start from scratch.

And if the account later needs to be escalated, you have a clear history of what has happened.

What does “can’t pay” look like?

Someone who genuinely cannot pay will not necessarily communicate perfectly.

They may avoid the first phone call because they are embarrassed.

They may sound uncomfortable.

They may not immediately know what they can afford.

That does not automatically mean they are trying to avoid you.

Look at what happens once you start talking.

Someone experiencing genuine difficulty may:

  • explain what has changed
  • continue responding to you
  • be open about the problem
  • offer a part-payment
  • suggest a realistic payment date
  • ask whether an arrangement can be made
  • have a previously good payment history
  • keep to the commitments they make

None of these things automatically proves that somebody is unable to pay.

But together they begin to build a picture.

And that is what you are looking for.

What does “won’t pay” look like?

A customer avoiding payment can sound perfectly convincing.

You might hear:

“I’ll get that paid today.”

“Accounts are dealing with it.”

“It is just waiting for the director.”

“You should have it tomorrow.”

Any one of those could be completely genuine.

The problem starts when tomorrow keeps moving.

A missed payment date tells you something.

Three missed payment dates tell you rather more.

Things to watch for include:

  • repeated promises that are not kept
  • calls suddenly being avoided
  • a different explanation every time you speak
  • claims that payment has been made without any details being provided
  • a new issue appearing every time the previous one is resolved
  • refusal to give a realistic payment date
  • continually asking for more time without suggesting a solution
  • only responding when the pressure increases

You do not need to decide that the customer is deliberately lying.

You only need to recognise that the current approach is not working.

A broken promise should change the conversation.

If somebody promises payment on Friday and Friday passes with no payment and no explanation, simply having the same conversation again on Monday is unlikely to move things forward.

Ask questions that tell you something useful

“When are you going to pay?”

It is an obvious question.

Unfortunately, it is also very easy to answer.

“Tomorrow.”

Instead, try to understand what is actually preventing payment.

You might ask:

  • Is there anything currently stopping this invoice from being paid?
  • Is there a problem with the invoice that we need to resolve?
  • When do you realistically expect funds to be available?
  • Can any of the balance be paid now?
  • If the full amount cannot be paid, what would be manageable?
  • Who else needs to be involved?
  • What needs to happen before the payment can be released?

You are not interrogating the customer.

You are trying to remove the guesswork.

And that is one of the biggest differences between simply chasing an invoice and actually managing credit control.

If they genuinely cannot pay

If somebody is genuinely struggling and is willing to engage with you, immediately taking the hardest possible line may not give either business the best outcome.

A payment plan may be appropriate.

But it needs structure.

Agree:

  • how much will be paid
  • when each payment will be made
  • when the full balance will be cleared
  • how the payments will be made
  • what will happen if a payment is missed

Then confirm it in writing.

“Pay what you can when you can” is not really a plan.

You need a clear route from where the account is now to the balance being cleared.

And once you have agreed it, monitor it.

If the first payment is due on the 15th, check on the 15th.

Do not discover three weeks later that nothing arrived.

If they keep breaking promises

There also has to be a point where normal chasing stops.

If payment dates keep being missed, communication stops or the explanation changes every time you speak, another reminder may achieve very little.

At that point, you may need to:

  • give a clear final payment date
  • confirm the position in writing
  • involve somebody more senior
  • review whether the customer should continue receiving credit
  • move the account out of normal credit control
  • consider whether recovery action is now appropriate

There are steps between a routine reminder and court proceedings.

Our guide to what happens before debt recovery explains what that can look like.

If older invoices have already started building up, you can also use our Recovery Estimator to get an indication of what your overdue ledger could potentially recover.

Protecting the relationship does not mean avoiding difficult conversations

This is where good credit control can make a real difference.

Being clear does not mean being aggressive.

Being understanding does not mean accepting endless excuses.

And asking to be paid does not have to damage the customer relationship.

In fact, poor communication is often more damaging.

A customer who receives a string of automated reminders with no understanding of what is happening may feel very differently from somebody who has spoken to a person, explained the situation and knows exactly what has been agreed.

Equally, a customer who continually breaks promises should know that the next step will change.

People generally cope better with clear expectations than uncertainty.

Good credit control gives them that clarity.

That is why chasing overdue invoices without damaging customer relationships is not really about finding a magic sentence.

It is about how you communicate, how consistently you follow up and whether your response fits what is actually happening.

Look at behaviour, not just words

You will not always know from one conversation whether somebody cannot pay or simply will not pay.

Look at the pattern.

A customer who says they are struggling, keeps talking to you, makes an agreed part-payment and then sticks to the next date is showing you something.

So is a customer who promises payment every Friday and then disappears until you chase again.

Your notes help you see that pattern.

Keep track of:

  • conversations
  • promises
  • payment dates
  • missed commitments
  • disputes
  • explanations
  • payment arrangements
  • follow-up actions

Good records do more than create a paper trail.

They help you make better decisions.

Credit control is often about knowing what to do next

That is the part that is easy to underestimate.

Sending the first reminder is simple.

The harder part is knowing what the second, fifth or tenth conversation should look like.

Knowing when to give somebody more time.

Knowing when not to.

Knowing when a payment plan is sensible.

Knowing when an account is simply drifting.

Knowing when protecting a customer relationship means being patient and when protecting it means being very clear about what happens next.

There is a lot going on behind what can look like one simple phone call.

And when it is done properly, the customer should not necessarily see any of that complexity.

They should simply feel that they have been treated fairly, spoken to like a person and given clear information about what needs to happen next.

The difference is often in the conversation

There is no perfect checklist that will tell you with certainty whether somebody cannot pay or simply will not pay.

You build the picture from what they say, what they do and whether their actions match their promises.

Automation can remind you that an invoice is overdue.

It can help keep your process moving.

It can keep a written record.

But sometimes you still need a person to pick up the phone and ask:

“What is actually going on?”

The answer can completely change what happens next.

Want somebody else to take care of it?

If keeping on top of overdue invoices, promises, follow-ups and customer conversations is taking more time than it should, use our Pricing Estimator to get an instant guide price for outsourced credit control.

If you would rather talk through what is happening first, contact us.

And if the problem is already an older overdue ledger, start with our Recovery Estimator.