Full-time equivalent (FTE) expresses workforce size as capacity rather than as a count of people. One FTE equals one person working a full standard schedule, so someone working half that schedule counts as 0.5 FTE. Headcount answers how many individuals are employed; FTE answers how much working capacity those individuals represent.
Divide each person's contracted hours by the organization's standard full-time hours, then add the results. Take a team of seven people. Four work the full standard week and count as one FTE each. One works four days out of five, which is 0.8. Two colleagues share a single role, each working half the standard week, so together they contribute 1.0 while adding two to headcount. The team's headcount is seven and its capacity is 5.8 FTE. The arithmetic is simple; the definitions are where teams disagree. Whether the standard week is 35, 37.5 or 40 hours changes every figure, and comparing FTE across countries or business units without first agreeing that baseline produces numbers that look precise and mean very little. Write the standard down before anyone builds a model on it.
Whenever people work anything other than a full standard schedule, which happens more often than budget models assume. Part-time contracts, job shares, phased retirement, reduced hours after parental leave, term-time working and employees splitting time across two entities all open a gap between the number of people and the capacity available. Long-term absence is a judgment call: the person stays employed and counted in headcount, but their capacity is not there, and organizations differ on whether to reflect that. Fixed-term staff and interns count in both measures while engaged. Contractors and agency workers usually sit outside employee headcount entirely, which is why a team can feel larger than either number suggests. Divergence is not a data fault to be corrected. A widening gap between the two figures is telling you the shape of the workforce is changing.
Budgets in FTE, requisitions in positions, and never the two words used interchangeably in the same document. Finance plans in FTE because cost tracks capacity: two half-time employees cost roughly what one full-time employee costs in salary, even though they add two people to the payroll and to every per-person expense such as equipment or software licenses. Recruiters work in positions, because nobody hires 0.6 of a person. You open a role with a defined working pattern. The translation between the two has to be explicit. An approval for 3.0 FTE might mean three full-time roles or four part-time ones, and a requisition raised without stating the pattern produces offers that break the budget. Record the working pattern on the requisition itself so nobody has to reconstruct it later.
It sets the ceiling requisitions are checked against, so errors there surface as blocked or reworked roles weeks after the fact. A workforce plan written in FTE must be converted into countable positions before recruiting can act, and that conversion is where part-time roles, job shares and staggered start dates need decisions rather than assumptions. Timing matters as much as volume. An approval for a role starting in the final quarter contributes only part of an FTE to that year, which is why annualized plans and calendar approvals so often disagree. Keeping the plan, the position list and the open requisitions in one view avoids the familiar argument about whether a role was already approved. Tracking this beside your [recruitment metrics](/recruitment-metrics) shows how much approved capacity is genuinely filled.
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