Internal hire rate: the formula, what counts as internal, and the backfill chain behind every internal move

Internal hire rate is the share of filled requisitions that went to people who already worked for you: internal hires ÷ all hires in the period × 100, where internal hires are promotions and transfers into open roles. Report rehires and converted temporary workers on their own lines rather than as internal, and read the rate next to the backfills it creates, because one internal move usually opens another requisition. We found no original, methodologically described benchmark as of October 2026.

Internal vs external recruitment covers when to fill a role from inside, and the internal job posting template covers how to post it. This page is the measure: the formulas, the counting rules, a worked quarter and the backfill chain in numbers.

What are the formulas?

Internal hire rate         = requisitions filled by current employees
                             ÷ all requisitions filled × 100

Internal fill rate (level) = internal fills at a level ÷ fills at that level
Internal applicant success = internal hires ÷ internal applicants
Internal mobility rate     = employees who changed role in the period
                             ÷ average headcount × 100   (workforce measure)

The first three are recruiting measures and share a denominator of filled requisitions or applicants. The fourth is a workforce measure: it includes promotions in place that never had a requisition, and its denominator is everyone employed. Do not put the two on the same chart without saying so.

What counts as an internal hire?

These choices move the number a lot, which is why the report should list them. In the example below, counting converted temps as internal raises the rate from 25.0% to 33.3%.

Worked example: one quarter

Invented data, to show the arithmetic. 48 requisitions were filled in Q3.

The level split is the useful part. A 25% company-wide rate hides a pattern where most leadership roles go to insiders and most individual contributor roles do not, which may be exactly what you want, or may mean junior employees cannot see a way to move sideways.

How do you count the backfill chain?

Every internal hire leaves a seat behind. When the backfill is filled internally too, it leaves another. A company-wide internal hire rate counts each link as a hire, so a single departure can produce several "internal hires" and one new person.

Continuing the example: the 12 internal moves led to 10 backfill requisitions (2 roles were absorbed by the team). Of those 10 backfills, 3 were filled internally during the quarter (they are among the 12 internal hires), 4 were filled externally, and 3 were still open at quarter end.

Track one more number per chain: the days from the first vacancy to the day the last backfill is accepted. In one chain from the example, a director left on July 1, a manager was promoted on July 20, a senior analyst was promoted into the manager's seat on August 10, and an external analyst accepted on September 25. Three moves, one external hire, and 86 days before the chain closed, with a seat empty somewhere in the team for all of them. The cost of vacancy applies to every link. Raise each backfill the day the internal offer is accepted; the backfill request template includes a chain version.

Which fields do you need to calculate it?

Most ATS and HR systems can produce the basic rate. The chain needs two fields that are often missing, so add them before the quarter starts:

• Fill type on every filled requisition: promotion, transfer, rehire, conversion, intern conversion or external. One required field, with fixed values, so nobody types "internal-ish".
• Previous employee ID for anyone who already worked for you, to link the hire to the seat they left.
• Parent requisition on every backfill: the requisition whose internal fill created it. With this one field, a chain is a simple lookup, and its length and closing date can be counted automatically.
• Dates: requisition opened, offer accepted, and start, for each link in the chain.

How should you segment it?

• Level and function. As above; the company-wide rate is the least informative cut.
• Posted internally or not. Roles filled internally without an internal posting are worth checking against your own posting policy.
• Location. Remote employees may be less visible to hiring managers in head office.
• Hiring manager. A manager who never hires internally, or only does, is worth a conversation.
• Employee groups. Compare internal selection rates across groups in the same way you would for external hiring; the four-fifths rule page shows the calculation. Keep the records: the EEOC's rule at 29 CFR 1602.14 requires records having to do with hiring, promotion and transfer to be kept for one year from the record or the action, whichever is later (as of October 2026; this is not legal advice).

What should you do when the rate is off?

When it is lower than you want:

1. Check employees can see the roles. An internal posting window and a simple way to apply come first; see the internal job posting template.
2. Check internal applicants get a real conversation. If internal applicant success is low and most internal applicants are declined without an interview, the process, not the talent pool, may be the barrier.
3. Check the requirements. Requirements that name outside experience ("five years at an agency") screen out employees who could do the job.
4. Close the loop with those who were not chosen. Tell them in person, before any announcement, and say what would strengthen a future application.

When it is higher than you want:

1. Count the chains. A high rate with long chains means a lot of movement and few new people.
2. Check internal candidates face the same assessment. The same competencies, questions and scale as external candidates; see interviewing internal candidates.
3. Read it next to outcomes. Compare first-year performance and retention of internal and external hires in the same roles before concluding either way.

How does it relate to the neighboring metrics?

• Requisition fill rate counts internal fills as filled; the internal hire rate shows how many of those fills came from inside.
• Source of hire should carry "internal" as its own source, with promotions and transfers as sub-sources.
• Cost per hire is usually calculated on external hires; counting internal moves as hires understates it.
• Temp-to-hire conversion rate covers the converted workers this page counts as external.

How should you report it?

INTERNAL HIRING, Q3 (example)
Internal = promotions and transfers into open requisitions. Rehires and
converted workers counted as external, shown separately.

Filled 48 · Internal 12 (25.0%) · Rehires 3 · Conversions 4 · Other external 29
Manager and above 60.0% (6/10) · Individual contributors 15.8% (6/38)
Internal applicants 40 · hired 12 (30.0%)
Chains 9 · backfills raised 10 · filled internally 3 · externally 4 · open 3

Longest chain to close: 86 days (director → manager → senior → analyst).
Action: raise backfills on the day an internal offer is accepted.