What is the recovery rate on overdue invoices by age?
Recovery rate by invoice age — what the data says
Short answer
Recovery rates are roughly: day 3 past due, 80-90%; day 30, 60-70%; day 60, 40-50%; day 90, 20-30%; day 180, single digits. The exact numbers vary by industry and average ticket size, but the curve shape is consistent across published studies. The takeaway is that the timing of the first contact matters more than the tactic chosen.
The recovery curve is steep. Published research across small-business AR consistently shows day-3 follow-up recovers materially more than day-30 follow-up, which recovers materially more than day-60. By day 90, the customer has mentally reclassified the debt — they are no longer thinking of it as 'I owe this' but as 'this is gone.'
Why the curve is so steep: in the first week past due, the customer remembers the obligation, the work is recent in their mind, and a simple reminder usually closes the loop. By week six, two things have happened. The money has been spent on something else. And the customer's social-proof inertia kicks in: nobody else seems to be chasing them, so maybe it is okay to keep ignoring it. Both effects compound.
What surprises most owners is the first-week recovery rate. If you call on day 3, the recovery rate is in the 80-90% range across most service-business categories. Most small businesses never make that call — the discomfort of asking a customer for money outweighs the math, and the invoice ages out instead.
The tactical implication: timing dominates technique. A friendly phone call on day 3 outperforms a strongly-worded letter on day 30 or an agency referral on day 90. The hard part is not the script; it is making the call happen on time, every time, without it depending on the owner's mood or schedule.
This is the core thesis behind Syntharra. Once your accounting software is connected, the day-3 call is automatic. The agent identifies as AI, names the invoice, and either closes the conversation, schedules a callback, or escalates a dispute to you. You pay only on what gets recovered.