Calculate full-time equivalent employees and total hours for staffing, capacity management, and business planning.
Calculate total FTE for HR, staffing, and workforce planning. This calculator uses the standard 40-hour workweek as the baseline — one FTE equals 40 full-time hours per week.
full-time equivalents
A full-time equivalent (FTE) is a standardized unit of measurement that converts part-time and variable-hour employee schedules into a comparable full-time number. Counting heads inflates workforce size when part-time employees are included. FTE measures actual labor capacity instead.
One FTE equals the hours one full-time employee works in a given period. For most HR and staffing purposes, that baseline is the 40-hour workweek, or 2,080 hours per year. A part-time employee working 20 hours per week contributes 0.5 FTE. Two such employees together equal one FTE.
Business owners, HR teams, and financial planners use FTE to compare workforce size against industry benchmarks, estimate labor costs, set staffing baselines, and plan for headcount changes without being misled by the raw number of employees on payroll.
The FTE formula
Headcount is a raw count of the number of employees on payroll, regardless of how many hours each one works. It is the simplest possible workforce metric, and often the most misleading one.
Consider two businesses each reporting 50 employees. The first has 50 full-time staff working 40 hours per week, for a total of 2,000 labor hours. The second has 25 full-time and 25 part-time employees averaging 20 hours each — just 1,500 labor hours. Same headcount, very different capacity.
FTE normalizes the comparison. The first business has 50 FTE. The second has 37.5 FTE. That difference shows up in every downstream calculation: revenue per employee, cost per FTE, and PPP loan calculations.
When to use FTE vs headcount
| Use case | Use FTE | Use headcount |
|---|---|---|
| ACA / ALE compliance | ✓ | |
| Budgeting & labor costs | ✓ | |
| Revenue per employee benchmarks | ✓ | |
| Payroll processing | ✓ | |
| Benefits enrollment tracking | ✓ | |
| Org chart / reporting lines | ✓ | |
| PPP loan calculations | ✓ |
ACA compliance
The Affordable Care Act (ACA) uses FTE to determine whether an employer is an Applicable Large Employer (ALE). This classification carries significant obligations, and the FTE calculation for ACA purposes differs from the general HR formula most businesses use day-to-day.
Under the ACA, a full-time employee is one who works at least 30 hours per week or 130 hours per month, compared to the 40-hour standard used for general HR purposes. Part-time FTE is calculated by dividing total monthly hours worked by all part-time employees by 120, not 160.
ALE status for the current year is based on FTE data from the preceding calendar year. A new business that did not exist for all 12 months uses only the months in which it operated.
ALE — 50+ FTE
Subject to employer shared responsibility provisions. Must offer affordable health coverage to full-time employees or face potential penalties. Required to file IRS Forms 1094-C and 1095-C. Open enrollment and health benefits decisions become compliance obligations, not optional perks.
Non-ALE — under 50 FTE
Not subject to the employer mandate or ACA reporting requirements. May still be eligible for the Small Business Health Care Tax Credit if offering health benefits through the SHOP Marketplace. Fewer than 25 FTE may qualify for the full credit.
A business has 40 full-time employees (working 32+ hours per week, qualifying under the 30-hour ACA threshold) and 20 part-time employees who each work 60 hours per month. In a given month:
If this pattern holds across all 12 months, the annual average FTE is 50, right at the ALE threshold. This employer is an ALE and is subject to the employer mandate. The same workforce calculated under the general 40-hour formula would show a lower FTE, but that figure is irrelevant for ACA compliance.
Source: IRS — Determining if an Employer is an Applicable Large Employer
Important: ACA compliance is a complex legal and regulatory area. The information above is provided for general educational purposes only and does not constitute legal, tax, or benefits advice. Always consult a qualified tax advisor, employment attorney, or benefits specialist before making any compliance decisions based on FTE calculations.
Practical applications
FTE shows up across multiple business contexts beyond ACA compliance. Knowing which calculation applies to each use case prevents errors in budgeting, forecasting, and reporting.
FTE is the standard unit for describing workforce size in any context where raw headcount would mislead. When forecasting labor needs for a project, a department, or a growth plan, FTE tells you how much actual labor capacity you have and how much you need.
If a project requires 3,200 hours of work over a quarter, and each full-time employee contributes 520 hours in that period (13 weeks × 40 hours), you need approximately 6.15 FTE. Whether those are 6 full-time employees and one part-timer, or 12 people each working half-time, the FTE requirement is the same.
FTE-based budgeting gives more accurate labor cost projections than headcount alone. Total labor cost = Total FTE × average annual salary per FTE. This includes the cost of part-time employees converted to their full-time equivalent basis, making it easy to compare staffing costs period over period even when the mix of full-time and part-time employees changes.
The Paycheck Protection Program (PPP) used FTE to determine loan forgiveness eligibility. Borrowers needed to maintain FTE levels relative to a reference period to qualify for full forgiveness. PPP FTE used a 40-hour baseline, with employees working fewer than 40 hours per week counted as a fraction. While PPP lending has ended, FTE remains the method used for workforce comparison in similar programs.
Many industry benchmarks express performance in terms of revenue per FTE rather than revenue per employee. Using headcount would distort this ratio whenever a business employs a significant share of part-time workers. Comparing your revenue per FTE to industry baselines gives a more reliable signal of whether your workforce is operating efficiently.
For employers close to the 50 FTE ACA threshold, tracking actual hours worked against the ACA FTE formula throughout the year is essential. An employer at 45 FTE in January who hires seasonal workers in summer may breach the threshold mid-year and change their ALE status for the following year. Health benefits decisions, open enrollment planning, and 1095-C reporting all depend on maintaining accurate monthly FTE data.
Non-ALE employers with fewer than 25 FTE may qualify for the Small Business Health Care Tax Credit when offering health insurance through the SHOP Marketplace. The credit is calculated based on FTE count and average wages — not headcount. Businesses with fewer than 10 FTE and average wages below a set threshold may qualify for the full credit amount.
Toggl Track is built around voluntary time tracking — no screenshots, no activity monitoring, no surveillance. Just accurate hours data that makes your FTE calculations reflect reality.
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