Extended definition
Time to fill is the most quoted recruiting metric and the most often confused with its sibling, time to hire. Time to fill starts when the requisition is approved and ends when the candidate accepts the offer.
It captures everything in between — sourcing, screening, interviewing, offer process, negotiation. Because it begins at req approval, time to fill includes delays the recruiter can’t always control: hiring manager availability, scope ambiguity, executive sign-off, comp band debates.
It’s the cleanest metric for measuring the end-to-end hiring engine because it covers the full process, but for the same reason it’s a poor metric for assessing recruiter performance in isolation.
How to calculate time to fill
The standard formula is:
Time to fill = Date offer accepted − Date requisition opened
Calendar days, not business days. Measured per hire, then averaged across hires within a period (month, quarter, role family) for benchmarking.
Two common variants:
Median versus mean — Mean time to fill gets distorted by long outlier searches.
Median is usually a more representative number for ongoing performance. Most analytics tools surface both.
Time-to-fill by role family — Aggregate company time to fill is usually meaningless because it mixes 14-day customer service hires with 90-day VP searches. Benchmarking by role family — engineering, sales, ops, finance, executive — produces actionable numbers.
Industry benchmarks vary. Across general roles, 30-50 days is common; technical and senior roles often run 60-90+ days; volume roles can run under 14 days. The right benchmark for any company is its own historical performance trended over time, plus comparison to similar companies in similar markets — not generic industry averages that mix categories.
Time to fill is influenced by req approval delays, sourcing strategy, interview process design, decision speed, and offer-acceptance dynamics. Diagnosing where time to fill is bleeding requires breaking it down stage by stage, not just looking at the headline number.
Why time to fill matters
Time to fill drives multiple downstream costs. Open roles cost productivity (the work isn’t getting done), opportunity cost (revenue, projects, hiring momentum lost), and candidate cost (longer processes lose strong candidates to faster competitors).
For VPs of TA, time to fill is the rolled-up health metric for the whole hiring engine — when it’s trending up, something specific is breaking and the team needs to find what. For CFOs, time to fill correlates closely with productivity gaps and is one of the metrics most quoted in board discussions of hiring effectiveness.
Common mistakes and misconceptions about time to fill
- Confusing time to fill with time to hire — Time to fill starts at req opening; time to hire starts at first candidate contact. The first measures the full process; the second measures only the candidate-side journey. Mixing them produces benchmarks that are off by weeks.
- Reporting a single company-wide average — Aggregate numbers across role families are mostly noise. Engineering time to fill at 75 days and customer service at 12 days average to a number describing neither.
- Comparing internal numbers to generic industry benchmarks — Industry averages mix companies, sectors, and seniority levels in ways that don’t apply. The most useful comparison is against the company’s own trended history.
- Punishing recruiters for time to fill they don’t control — Req approval delays, hiring manager availability, and offer-stage executive review are not recruiter levers. Holding recruiters accountable for end-to-end time to fill without separating those drivers is a morale problem and a measurement error.
- Tracking only completed hires — Open requisitions that have been live for 200 days are part of the time-to-fill story. Reporting only on closed hires hides the worst-performing searches.
Frequently asked questions
What is time to fill?
Time to fill is the number of calendar days between a requisition opening and the successful candidate accepting the offer. It measures the recruiting process from authorisation to commitment — not from candidate application. Time to fill starts when the requisition is approved and ends when the candidate accepts the offer.
What's a good time to fill benchmark?
It depends entirely on role type. Volume roles often fill in under 14 days, mid-level roles in 30-50, technical and senior roles in 60-90+. The most useful benchmark is the company's own trended history by role family, not a generic industry average that mixes categories.
What's the difference between time to fill and time to hire?
Time to fill measures from requisition opening to offer acceptance — the full hiring process. Time to hire measures from first candidate contact to offer acceptance — only the candidate-side journey. Time to fill includes req-approval and pre-sourcing delays; time to hire excludes them.
How do you reduce time to fill?
Diagnose stage by stage rather than chasing the headline number. Common levers: faster req approval and intake, sharper sourcing briefs, tighter interview loop scheduling, faster decisions in debrief, faster offer turnaround. The dominant constraint varies by company, so the fix follows the diagnosis.
Should you measure time to fill in calendar days or business days?
Calendar days is the standard. Business-day measurement understates real elapsed time for candidates and obscures weekend-and-holiday delays in scheduling. Calendar days reflect the actual experience of the process for both the candidate and the hiring manager waiting for a hire.