How long should I wait before sending an invoice to collections?
How long should you wait before sending an invoice to collections?
Published May 8, 2026
Short answer
Most businesses wait too long before escalating unpaid invoices — 90 days is common but is actually too late for the best recovery rates. Here's the evidence-based timeline:
Stop chasing this invoice yourself.
Syntharra's AI voice agent calls your overdue customers on day 3 past due, compliantly, on a success fee. You pay 10% only on what we recover.
Connect your books**Recovery rates by age (US average):** - Under 30 days past due: ~90% recovery rate with consistent follow-up - 30–60 days: ~75% recovery rate - 60–90 days: ~55% recovery rate - 90–180 days: ~30% recovery rate - 180+ days: ~10% recovery rate
**The evidence-based escalation timeline:**
**Day 1–3 past due:** Automated email reminder. Assume oversight.
**Day 7:** Phone call. Most invoices in the 1–30 day bucket resolve here.
**Day 14:** Second phone call + email. Note the conversation date and any payment promise.
**Day 21:** Formal demand letter (email + certified mail). State that failure to pay by [date] will result in collections referral.
**Day 30:** Escalate. This is when most businesses should involve a collections service — not day 90. By day 90, the debtor has fully deprioritized the debt.
**Exceptions where you should escalate earlier:** - Debtor stops responding after previously engaging - You receive information that the debtor is closing or changing ownership - The debtor disputes the invoice in bad faith (no specific objection, just delays)
**What "escalate" means:** A collections referral doesn't have to mean a third-party agency. AI voice collection tools call the debtor directly on your behalf, are much cheaper than agencies (10% of recovered vs. 25–40% for agencies), and are appropriate earlier in the timeline because they are non-confrontational.