Glossary

Full-Time Equivalent (FTE)

Definition

Full-Time Equivalent (FTE) is a standardized unit that represents the workload of a single full-time employee over a specific period (usually a year). It’s used to quantify total labor capacity regardless of how many part-time, contract, or temporary workers are on staff.

One FTE = one person working full-time.

Two part-timers working half-time each? Also equals one FTE.

Why FTE matters

Function Use Case
HR & workforce planning Compare staffing levels across teams, departments, or geographies
Finance & budgeting Forecast payroll costs, benefits, and headcount allocation
Project management Allocate people resources against timelines or deliverables
SaaS business ops Calculate revenue per FTE, cost per FTE, or team productivity
Investors Evaluate company efficiency (e.g., ARR per FTE, revenue per employee)

How to calculate FTE

Formula:

FTE = Total number of hours worked ÷ Number of hours for a full-time schedule

Example:

  • Full-time = 40 hours/week
  • Employee A: 40 hours/week → 1.0 FTE
  • Employee B: 20 hours/week → 0.5 FTE
  • Employee C: 10 hours/week → 0.25 FTE

Total = 1.75 FTEs

In HR planning terms:

Role Weekly Hours FTE
Full-time engineer 40 1.0
Part-time designer 20 0.5
Intern 10 0.25
Contract PM (30 hrs/wk) 30 0.75
Total - 2.5 FTEs

FTE vs Headcount

Metric Definition
Headcount Raw count of individuals employed, regardless of hours
FTE Adjusted count based on hours worked relative to full-time

A team of 10 part-timers could equal 5 FTEs.

FTE in SaaS efficiency metrics

Metric Why It Matters
ARR per FTE Measures revenue efficiency. It is used in fundraising and benchmarking
OpEx per FTE Tracks burn efficiency and cost of growth
Engineering or R&D FTE % Shows how much of your team is product-focused
Support tickets per FTE Tracks scalability and service burden

When FTE is critical

  • Workforce cost planning
  • Funding rounds or board reporting
  • Resource allocation for multi-team projects
  • Post-merger headcount rationalization
  • Government compliance (e.g., US ACA regulations)

Final takeaway

FTE gives you an apples-to-apples view of workforce capacity. Whether you’re scaling, budgeting, or reporting, it lets you plan and measure labor resources accurately, without getting misled by raw headcount.

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