The short answer
A good client who pays every invoice a week or two late usually has a process problem you can work around from your side. Work out the pattern from your last 5 or 6 invoices, find the cause, and change your invoicing to fit it:
List each invoice’s date, due date and the date it was paid.
Look for a fixed payment day, or a lag that stays about the same.
Ask the client when their payment run happens and what the cut-off is.
Date and send your invoices so they arrive before that cut-off.
If the lag keeps growing instead, treat it as a possible cash problem.
Then decide whether the lag is worth fixing at all. If a client reliably pays 10 days late and your cash flow can absorb it, the cheapest fix may be to plan around their real payment date.
Read the pattern first
A single late invoice tells you very little. 5 of them in a row usually tell you exactly what is going on. Here is one client’s record on net 14 terms:
Invoice | Dated | Due | Paid | Days late |
|---|---|---|---|---|
#201 | 3 June | 17 June | 20 June | 3 |
#207 | 12 June | 26 June | 20 July | 24 |
#212 | 2 July | 16 July | 20 July | 4 |
#219 | 14 July | 28 July | 20 August | 23 |
#224 | 1 August | 15 August | 20 August | 5 |
Every payment arrived on the 20th. This client pays once a month, and an invoice that is not yet due by the 20th waits for the next month’s run. Invoices dated in the first week were a few days late. Invoices dated mid-month were more than 3 weeks late.
The fix here is simple. Invoices dated by the 6th, on net 14, fall due by the 20th and go out in that month’s run.
The usual causes, and what fixes each
A fixed monthly or fortnightly payment run
A frequent cause with clients that have a finance team, as in the example above. Ask when the runs happen and what the cut-off is for an invoice to be included, then time your invoices to it. This is one of the 7 reasons clients pay late, and the easiest to prevent.
“30 days from the end of the month”
Some finance teams count payment terms from the end of the month the invoice arrives in, whatever your invoice says. An invoice sent on the 3rd can then take close to 2 months. If that is their policy, you are unlikely to change it. Invoice earlier in the month, or price the longer wait into your fees, as the payment terms guide explains.
The due date is treated as the start
Some clients, especially smaller ones where the owner pays the bills personally, read the due date as the day to start thinking about payment. In a r/consulting discussion about exactly this kind of client, the suggestions included an earlier due date and a small discount for paying early, and several commenters advised against confronting a client who is otherwise reliable. A reminder a few days before the due date can also be enough to move the payment into the right week.
An approval queue
The invoice waits for someone to sign it off, and that person is busy. The lag varies with their workload. Ask who approves your invoices, send the invoice to them and to accounts payable at the same time, and use a shared billing address so replies reach the right person.
A lag that keeps growing
3 weeks late, then 5, then 7, with partial payments in between, is a different pattern. That usually points to a cash problem at the client, and it needs a limit rather than a timing fix. When your biggest client is your latest payer covers what to do.
Take the timing out of their hands
For smaller clients, or anyone on a retainer, the most reliable fix is to agree a fixed payment date and collect it automatically. In an r/smallbusiness discussion about invoice approvals, one owner described moving every project to fixed payment dates collected by ACH, and having no issues since.
Direct debit or ACH on a fixed date, agreed in the contract, for retainers and payment plans.
Invoicing in advance for recurring work, so the money arrives before the month starts.
A card on file for smaller clients who pay personally.
The cost worth naming: larger clients rarely agree to be debited automatically, because their payments go through approval and their own systems. For them, lining up with the payment run is usually the most you can do.
Decide whether it is worth fixing
A client who pays every invoice 10 days late is still a client who pays every invoice. Before you change anything, work out what the lag costs you. On a $6,000 monthly invoice, 10 extra days at a 10% borrowing rate is about $16 a month. The time you spend following it up is usually worth more than that, which the cost of following up your own invoices sets out.
If your cash flow can absorb the delay, the calmest option is to treat their real payment date as the plan: expect the money on the 20th, and schedule your own bills around it. If the lag does hurt, fix the timing first, because that costs the relationship nothing.
Adding a late fee for a good client who is a week behind rarely changes when they pay, and it can cost goodwill worth more than the fee.
How to raise it
Frame it as lining up your process with theirs. You are asking for information, and the client has nothing to defend:
Subject: Lining up our invoices with your payment run
Hi [Name],
Our last few invoices have been paid about [number] days after the due date, which looks like a timing issue with your payment run.
Could you tell me when your payment runs happen, and the cut-off for an invoice to be included? I’ll date our invoices so they arrive in time.
Thanks,
[Name]
Finance teams are usually happy to answer, because it makes their job easier too.
FAQ
What should I do about a client who always pays late?
Track the date each invoice was sent, due and paid, and look for a pattern. If payments always arrive on the same day of the month, ask when their payment run is and send invoices before the cut-off. If the delay keeps growing, treat it as a possible cash problem and set a limit on what they can owe.
Should I charge a late fee to a good client who pays a week or two late?
Usually not as a first step. A late fee rarely changes when a client with a fixed payment run pays, and it can cost goodwill. Fix the timing of your invoices first, and keep late fees for delays that are growing or deliberate.
How do I find out when a client pays invoices?
Ask their accounts payable team or your contact when their payment runs happen and what the cut-off is. You can also read it from your own records: if several payments arrived on the same date each month, that is almost certainly their run.
Is it worth dropping a client who always pays late?
Rarely, if they always pay in full and the delay is predictable. Work out what the delay costs you and whether your cash flow can absorb it. A client who pays reliably late is easier to plan around than one who pays unpredictably.
Can I ask a client to pay by direct debit?
Yes, and for retainers and smaller clients it is often the most reliable fix. Agree the payment dates in the contract. Larger organisations usually pay through their own approval process and are less likely to agree.