Calculators · Therapy productivity
Physical therapy (PT) productivity calculator
This physical therapy productivity calculator shows PTs and PTAs their percentage, the minutes still to bill and the latest time they can leave.
Your numbers
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Result
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The formula
Productivity % = treatment minutes ÷ paid minutes × 100
Paid minutes is the shift with the unpaid break taken out. Some outpatient clinics measure in billed units instead of minutes. Under the US Medicare 8-minute rule a unit is 15 minutes, and the first one needs at least 8 minutes of timed treatment.
Worked example
An outpatient PT works 08:00 to 16:00 with a 30-minute unpaid lunch: 450 paid minutes. By 15:00 they have 360 treatment minutes, which is 80.0% of the 450 paid minutes. Against an 85% target they need 383 minutes, so 23 more would close the gap. If no more patients come in, 360 ÷ 0.85 = 423.5 paid minutes. Add the 30-minute break to the 08:00 start and the latest they could leave is 15:33, rounded down so they stay at 85%.
Common questions
Is a PT’s productivity calculated differently from an OT’s?
No. The arithmetic is the same: treatment time divided by paid time. What differs is the setting and how your employer counts time, for example billed units against actual minutes, or scheduled hours against hours worked.
Do PTAs have a different target?
Your employer sets the target, and it can differ for assistants. Targets vary from employer to employer. Use the number in your job description or productivity report.
What is the KX modifier threshold?
In US Medicare Part B, a patient’s outpatient therapy charges for the year can exceed a yearly threshold. After that, claims carry the KX modifier to confirm the care is medically necessary. For 2026 the threshold is $2,480 for PT and speech-language pathology combined. It replaced the old therapy caps, which were repealed in 2018.
Longer explanation: How to calculate productivity for therapists, and why yours never matches