The customer raises a dispute only after 90 days

The scenario

An invoice has been overdue for 90 days. You have sent reminders, you have escalated, and only now — as the matter approaches a formal demand — does the customer suddenly raise a dispute: the work was not right, the price was wrong, something was never delivered. The objection has appeared at the eleventh hour, after three months in which the customer said nothing and paid nothing. You are immediately unsure whether you are looking at a real grievance that was poorly communicated or a convenient obstacle thrown up to stall the escalation you had finally set in motion.

What's really going on

The timing is the central clue, though it cuts both ways and you must resist jumping to either conclusion. A genuine dispute usually surfaces early — when the invoice arrives or the work is delivered — not after 90 days of silence and several reminders. A dispute that appears only as escalation looms is, statistically, more likely to be a delaying tactic: a way to reset the clock, force you back to the negotiating table, and slow the momentum you had built. That said, late does not automatically mean false; customers do sometimes raise valid issues badly and slowly. You cannot ignore the dispute, because dismissing a genuine grievance is both unfair and risky, but you also cannot let a possibly manufactured one halt everything indefinitely. The resolution lies in testing it.

Your options

Your task is to take the dispute seriously while preventing it from becoming an open-ended stall:

• Ask for specifics in writing. A genuine dispute can be articulated with detail; a manufactured one often cannot.
• Set a tight resolution timeframe. Engage with the issue, but on a defined timeline rather than indefinitely.
• Ring-fence the undisputed portion. Where only part of the invoice is questioned, press for payment of the rest now.
• Investigate and decide. Check your records and evidence, then either correct a genuine error or stand firm and continue escalation.

Recommended approach

Acknowledge the dispute properly — never wave it away just because it is late — and immediately ask the customer to set out the specifics in writing: exactly what is wrong, with what, and why. This single request does most of the work, because a real grievance can be detailed precisely while a tactical one tends to stay vague and shift under questioning. Put a firm timeframe on resolving it so engagement does not become indefinite delay, and where only part of the invoice is in question, insist on payment of the undisputed balance straight away; there is no honest reason to withhold money that is not actually in dispute. Investigate against your own records, then make a decision: if you got something wrong, correct it and move on; if the invoice is sound, say so clearly with your evidence and resume the escalation you had paused. The point is to give a genuine dispute fair process while denying a manufactured one the open-ended delay it was designed to create. For more on this dynamic, see handling stalls and excuses.

What to avoid

Do not dismiss the dispute out of hand simply because of its timing; a genuine grievance ignored is both unjust and exposes you if the matter later escalates. Equally, do not let a vague, unsubstantiated objection halt all collection indefinitely, which is precisely what a delaying tactic relies on. Do not allow the entire invoice to be parked when only a portion is in question — the undisputed amount should still be paid now. And do not resolve the dispute informally and then forget to restart the process; once an issue is dealt with, the clock should resume promptly.