Abandoned call
Definition
Abandoned call: what it means and how to measure it
An abandoned call is any inbound call the caller ends before reaching a live agent, usually while on hold or inside the IVR menu. Contact centres track it as a core KPI because a rising rate flags staffing gaps, poor routing, or a broken customer experience.
Every abandoned call is a lost interaction — a sale that didn’t close, a support issue left unresolved, or a customer likely to escalate through email, social, or a competitor’s line.
Most industry benchmarks put the healthy range at 5-8% of total inbound volume, with anything above 10% flagged for immediate review. In 2021, Talkdesk’s Global Contact Centre KPI Benchmarking Report logged a 5.91% average across the 4,000+ centres it sampled, a figure most subsequent industry surveys still cluster around.
The metric cuts across industries. Retail hotlines during a Black Friday surge, healthcare provider lines during flu season, and financial services during tax-filing windows all see abandonment spikes tied to predictable volume peaks.
For outsourced call centres, this KPI feeds straight into service-level agreements. It’s usually paired with average speed of answer and first-call resolution to give clients a full read on queue health.
Key takeaways
- An abandoned call is any inbound call terminated by the caller before an agent picks up.
- The industry-accepted healthy range sits at 5-8%; over 10% signals a staffing or routing issue.
- Standard formula: (abandoned calls ÷ total inbound calls) × 100, usually excluding drops in the first 5-10 seconds.
- Long hold times, over-layered IVR menus, and understaffed shifts are the three biggest causes.
- BPO service-level agreements almost always cap the abandonment rate as a contractual KPI.
How it works
Abandoned calls are counted the moment a caller ends the connection before an agent answers. Most platforms — Genesys, Five9, NICE CXone — exclude calls dropped inside a short grace window (typically 5-10 seconds) to strip out misdials.
The formula is straightforward.
Abandonment rate (%) = (abandoned calls ÷ total inbound calls) × 100
So a centre that logged 340 abandoned calls out of 6,200 total inbound calls last week ran at 5.48%, comfortably inside the industry norm.
| Rate band | Status | Typical trigger |
|---|---|---|
| Under 3% | Excellent | Overstaffing or low volume |
| 3-5% | Healthy | Well-balanced queue |
| 5-8% | Acceptable | Industry standard band |
| 8-12% | Warning | Staff shortage or peak spike |
| Over 12% | Critical | Routing failure or systemic issue |
Contact centres pull the raw counts from their automatic call distributor (ACD), the software layer that queues and routes inbound calls to the next available agent. Reports usually break the number down by half-hour interval, so team leaders can spot the shifts where callers give up.
The rate is reviewed weekly against the SLA target and daily during peak seasons. Managers watch two secondary signals alongside it: how long the average call sat in queue before it was abandoned (short hangs suggest IVR friction, long hangs suggest hold-time frustration), and whether the same phone numbers keep re-dialling within 24 hours (a strong tell that abandonment is masking unresolved intent).
Examples
Real-world abandonment rates swing wildly by sector and by how tightly the operation is staffed. Here’s how three well-known operators have publicly framed the problem.
Klarna (Swedish fintech, 2024): in February 2024, Klarna announced its OpenAI-powered assistant was handling two-thirds of customer service chats within its first month, per the company’s official press release. Diverting simpler enquiries out of the voice queue reduced the volume feeding into it, the exact mechanism most contact centres now chase for pulling abandonment down.
Concentrix (US-based global BPO, 2024): the firm regularly publishes healthcare and telecom case studies where abandonment rates dropped from double digits into the 4-6% band after client work moved to Philippine and Indian teams with extended-hours coverage. Concentrix operates over 440,000 staff across 70+ countries per its FY24 filings.
Foundever, formerly Sitel Group (global BPO, 2022 onward): during the 2020-2022 pandemic volume peaks, several Sitel telecom clients saw abandonment spike above 25% before offshoring overflow volume to Manila and Bacolod. Foundever, the merged parent brand since 2022, still runs those queues today.
Related terms
Abandoned calls sit inside a cluster of contact-centre KPIs. These are the ones you’ll see quoted alongside it in nearly every operations review.
- Average handle time: how long an agent spends on each call, including wrap-up work.
- First call resolution: the share of enquiries closed without a callback.
- Interactive voice response: the automated menu that routes calls before an agent picks up.
- Call abandonment rate: the percentage expression of this same metric.
- Service level agreement: the contract that usually caps how high the rate can climb.
- Average speed of answer: how quickly the queue moves before callers start dropping.
- Outbound call: the flip side of inbound, where the centre initiates contact.
FAQ
What counts as an abandoned call?
Any inbound call the caller ends before an agent answers, excluding drops inside the first 5-10 seconds (which get treated as misdials). This covers calls given up during hold, mid-IVR, or after transfer but before the next agent picks up.
What’s a good abandonment rate?
Most industry benchmarks put the healthy band at 5-8%, with SQM Group’s contact-centre benchmark research placing world-class performance at under 3%. Anything above 10% is flagged for immediate operational review.
How do I calculate the abandonment rate?
Divide abandoned calls by total inbound calls, then multiply by 100. So 340 abandoned out of 6,200 total = 5.48%. Most ACD platforms report this figure automatically by half-hour interval, split by queue and by agent shift.
Why do callers abandon?
The three most common causes are long hold times, confusing or over-layered IVR menus, and understaffed shifts during peak volume. Poor hold-music design, missing estimated-wait-time announcements, and repeated transfers between departments also push the number up in most surveys.
How is an abandoned call different from a missed call?
An abandoned call reaches the queue but the caller hangs up before an agent picks up. A missed call never enters the queue, usually because it was dialled outside business hours or the line was already at capacity. They’re tracked separately in most ACD reports.
Does outsourcing reduce abandoned calls?
Usually yes, when the vendor is properly staffed. Offshoring overflow volume to Philippine or Indian BPOs adds coverage during peaks and overnight — the two windows where local staffing typically breaks down. Firms like Concentrix and Foundever routinely bring client abandonment rates from double digits into the 4-6% band.
If your abandonment rate is drifting above 8% and you’re weighing extra headcount against an outsourced overflow team, get a free quote from a vetted BPO partner to see what capacity relief looks like at your volume.
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