Practical Guide·9 min read

When Is the Right Point to Chase an Invoice?

Published 5 October 2026

It is one of the most common questions we get asked.

How long should you leave an invoice before you say something?

Most people are hoping for a number. Seven days. Fourteen days. Thirty days past due.

The honest answer is that there is no single day that works for every invoice, because invoices are not all the same and neither are the customers paying them.

A £400 invoice from a customer who has paid on time for six years does not need the same attention as a £40,000 invoice from a customer who has started paying later every month.

What matters is that someone is making a deliberate decision about each one, rather than finding out by accident that an invoice is ninety days old.

That decision is the heart of credit control, and it is almost always about timing as much as tone.

Waiting for an invoice to go badly overdue is a decision too

Plenty of businesses have an unwritten rule that they leave an invoice alone until it is properly late. Four weeks past due. Sometimes longer.

The thinking is usually well intentioned. Nobody wants to look impatient, and nobody wants to irritate a good customer over a few days.

The problem is what happens in the meantime.

By the time an invoice is six weeks old, several things have usually changed. The person who signed off the work may have moved on to the next project. The purchase order reference may be difficult to track down. Other suppliers who asked earlier may already be in the payment run. And if there was a query on the invoice, it has now been sitting unanswered for a month and a half.

Older invoices are simply harder work. Recovery rates fall the longer a balance sits, and the conversations become more awkward rather than less. Our guide to how unpaid invoices affect cash flow looks at what that delay actually costs a business.

Early contact is rarely about pressure. It is about catching the small things while they are still small.

Invoices sitting longer than you would like?

If staying on top of the ledger keeps slipping down the list, our Pricing Estimator gives you a private guide to what outsourced support could look like, with no obligation and nobody to speak to.

Start with the customer, not the calendar

The single most useful thing you can know before you chase anything is how that particular customer normally behaves.

Look at their usual payment pattern

Most customers have a rhythm, whether they realise it or not.

Some pay on the due date, every time. Some run a payment run on the last Friday of the month and everything goes out together. Some are habitually eight or ten days late and have been for years, which is annoying but entirely predictable.

Once you know the pattern, the right moment to make contact becomes much clearer. If a customer always pays in the monthly run and the run is three days away, a reminder on day one past due tells you very little and uses up goodwill you may want later. If a customer has always paid on the due date and that date has passed in silence, that silence is worth a phone call quite quickly.

A change in the pattern is the real signal

The useful information is almost never the fact that an invoice is late. It is the fact that something has changed.

Worth paying attention to:

a reliable payer suddenly becoming slower
part-payments appearing where full payments used to
emails going unanswered when they were always answered before
a new contact in accounts who has taken over without introduction
promised dates being quietly moved for the first time
the balance on the account creeping upward month on month

None of these mean there is a problem. They do mean it is worth asking a question sooner rather than later. A customer who has started behaving differently is telling you something, and our guide to can’t pay versus won’t pay covers how to read it.

Bigger invoices deserve closer attention, and earlier

Not every invoice carries the same risk, so not every invoice needs the same level of monitoring.

If one invoice represents a meaningful share of your month, a delay on that single balance can affect wages, VAT or your own supplier payments. The cost of being a few days early with a polite enquiry is close to nothing. The cost of discovering a problem six weeks late on your largest account can be considerable.

There is also a practical reason. Large invoices tend to need more internal approval at the customer’s end. More signatures, more checks, sometimes a board meeting. More places for an invoice to stall quietly without anybody meaning it to.

So it is reasonable to watch your top few balances closely, give the middle of the ledger a consistent routine, and let smaller invoices follow the standard process. That is proportionate rather than inconsistent.

It is also much easier to do all of this when your written terms and conditions are clear about payment terms in the first place, because then everyone is working to the same due date.

A friendly word before the due date can save weeks

This is the step most businesses skip, and it is often the one that makes the biggest difference.

Making contact shortly before an invoice falls due is not chasing. Nothing is late. There is nothing to apologise for and nothing to push. You are simply checking that everything is in order while there is still time to fix it if it is not.

It sounds like this:

“Morning Sarah. Invoice 4021 is due on Friday, so I just wanted to check you have everything you need for it. Anything missing at your end?”

That one message does a surprising amount of work. It confirms the invoice arrived and reached the right person. It confirms it has been approved, or flags that it has not. It surfaces a missing purchase order number or a query while there is still time. And it quietly puts your invoice in somebody’s mind before the payment run rather than after it.

It will not suit every customer. A long-standing account that pays like clockwork may find it unnecessary, and a very small invoice may not justify the time. But for larger balances, newer customers, or anyone whose behaviour has shifted recently, it is one of the most useful habits in credit control.

Then follow up soon after the due date, before the trail goes cold

Once a due date has passed without payment, the worst thing you can do is nothing.

An invoice that sits untouched does not become easier. It becomes background noise. Everybody assumes somebody else is dealing with it, and eventually it turns up on an aged debtor report as a surprise.

Following up fairly soon after the due date keeps you in genuinely useful territory. The work is recent enough that everyone remembers it. The approval chain is still warm. If there is a dispute, it can be dealt with while the detail is fresh rather than reconstructed months later.

How soon depends on everything we have already covered. The customer, the value, the history, and what your terms actually say. A customer with a known monthly run and a flawless record may genuinely need a few days. A newer customer, a large balance or an account that has gone quiet should not wait.

What matters is that the follow-up happens, and that it happens because somebody decided it should. Our guide to chasing overdue invoices professionally covers the language and the escalation side of that conversation.

Automated reminders are useful, and they are not the whole job

Accounting systems have made the routine part of this much easier than it used to be.

Where automation genuinely earns its place

Xero, QuickBooks, Sage and most modern ledgers will send invoice reminders for you on a schedule you set. Used properly, that is time well saved.

Automation is good at:

making sure nothing is forgotten on a busy week
being consistent when people are not
handling the high volume of small, low-risk invoices
keeping a dated written record of what was sent
freeing up your time for the accounts that actually need a conversation

If you are currently chasing nothing at all, switching on sensible automated reminders is a real improvement and costs very little.

Where a person is still needed

What automation cannot do is notice. It cannot tell that your second largest customer has gone unusually quiet, or that the same excuse has now appeared three times in slightly different words.

It also cannot hear hesitation. A reminder email gives you words on a screen. A phone call gives you tone, and tone is often where the real answer is. You can ask a second question. You can tell when somebody sounds uncomfortable. And some customers will say out loud what they would never put in writing.

There is a reputational risk too. A customer who receives six identical automated reminders and no human contact can reasonably conclude that nobody is really watching the account. Several ignored reminders in a row is information, and it should change what happens next rather than simply generating a seventh.

The sensible position is both. Let the system handle the routine and the record keeping. Keep a person for judgement, for the accounts that matter and for the moment the pattern changes. Our guide to dealing with late-paying customers goes further into when to pick up the phone.

Find out whether something is actually blocking payment

An unpaid invoice is not always a payment problem. Quite often it is an administrative one, and the customer has no idea anything is wrong.

Before you assume reluctance, it is worth establishing whether there is simply something in the way:

the invoice went to the wrong person, or to somebody who has left
a purchase order number is missing or does not match
a timesheet, delivery note or signed job sheet has not been received
the invoice is waiting on an approval nobody has chased
there is a genuine query about the amount, the dates or the scope
it needs submitting through a supplier portal that was never mentioned
the customer has changed their payment run or bank details

Every one of those is fixable in a single conversation, and every one of them gets harder to fix the longer it is left. This is exactly why early contact matters. You are not applying pressure. You are removing obstacles.

It also changes the question you ask. “When are you paying this?” is easy to answer vaguely. “Is there anything stopping this one being paid?” tends to get you something you can act on.

Proactive and aggressive are not the same thing

This is the worry that keeps most business owners from chasing earlier. They do not want to be the supplier who nags.

It is a fair concern, but the two things are genuinely different.

Being proactive is about timing and consistency. You contact people when you said you would, you ask clear questions, and you keep track of the answers. Being aggressive is about tone and threat. It is accusation, escalation for its own sake, and treating an administrative delay as bad faith.

You can be entirely polite and entirely consistent at the same time. In fact, consistency is usually what makes politeness possible. The supplier who says nothing for two months and then sends a furious email has not been gentler. They have simply stored up the difficulty and delivered it all at once.

Customers generally respond well to being treated like adults. A business that follows up calmly and predictably becomes the supplier that gets paid in the run, because it is easier to deal with you than to leave you. Our guide to chasing overdue invoices without damaging relationships looks at how that tone works in practice, and there are more practical credit control tips here if you want somewhere to start.

A regular process is what lets you see problems early

Everything above becomes much easier when it happens as a matter of routine rather than a reaction.

When the ledger is reviewed on a regular day, you notice things. You see the account that has slipped two weeks later than usual. You see the balance that has grown quietly across three invoices. You see the customer who has stopped replying. None of that is visible if you only look at the ledger when cash feels tight.

A regular process also takes the emotion out of it. Nobody has to decide whether today is the day to have an uncomfortable conversation, because the routine already decided. That makes the job far easier to do consistently, and far easier to hand to somebody else.

Our guide to the credit control process walks through how to build that routine, and if you suspect yours has drifted, these are the signs a credit control process is no longer working.

For a lot of smaller businesses the honest issue is capacity rather than knowledge. You know roughly when the invoices should be chased. There simply is not anyone free to do it on the day it needs doing, and it keeps losing to whatever else is urgent.

That is the point at which some businesses look at outsourced credit control, which gives the ledger a regular, dedicated routine without adding a salary. If you are weighing up whether it is worth considering, our Pricing Estimator gives you a guide price in a couple of minutes. It is useful mainly because most people expect the number to be far higher than it is, and you can find out privately before speaking to anyone.

So when should you chase?

When it makes sense for that customer, that invoice and that history.

It is a less satisfying answer than a rule, but it is the one that works. The businesses that get paid well are not the ones following a rigid day count. They are the ones who know their customers, keep an eye on the balances that matter, make contact before problems harden, and treat people decently while being perfectly clear about what is owed.

If you take one thing from this, make it the earlier half.

A question asked before the due date is worth ten reminders sent after it.

You do not have to wait until it becomes a problem

There is a common assumption that outside help is for seriously overdue debt. A lot of the value sits much earlier than that, in simply having the ledger looked after properly every week.

If you would like to know what that could cost, our Pricing Estimator gives you a guide price in a couple of minutes, with no obligation. If you would rather just talk it through first, you are very welcome to get in touch.