You've probably heard that 30 to 40 days is the "good" number for days in AR. But that days in AR benchmark was written for a pediatrician's office, not a therapy practice juggling prior auths and Medicaid programs.

So when you look at your own number, you're left guessing. Is 50 days fine? Is it a crisis?

In 2025, accounts receivable days for behavioral health practices climbed industry-wide, which makes comparing yourself to the wrong number even riskier.^[1] You can walk away falsely reassured or needlessly alarmed.

Here's the benchmark that actually fits behavioral health, how to calculate your own number, and how to tell whether yours signals a real problem.

What Days in AR Actually Measures

Days in AR is the average number of days between delivering a service and getting paid for it. That's it.

It's a cash flow metric more than a billing metric. Every day a balance sits unpaid is revenue you've earned but can't spend. For a busy practice, that gap can quietly add up to months of payroll sitting in limbo.

Think of it as a speedometer, not a report card. The point isn't to hit one perfect number on one day. It's to watch the trend and notice when it starts climbing.

There's also a hard truth underneath the metric: the longer a balance ages, the less likely you are to collect it. A claim worked at 30 days is far easier to resolve than one rediscovered at 120.

Picture a solo LCSW in Duluth with a full caseload who still feels behind on money every month. The schedule is packed, the work is real, but the cash never quite shows up on time. Days in AR is the number that finally explains that gap, and good A/R management in mental health billing starts with measuring it.

How to Calculate Your Days in AR

The formula is simple, and you can run it in a few minutes.

Days in AR = Total AR ÷ Average Daily Charges

Start with your total outstanding AR. That's everything owed to you across all payers plus patient balances. Subtract any credit balances so you're not inflating the number.

Next, find your average daily charges. Take your total charges over a recent period, say the last 90 days, and divide by the number of days in that period.

Then divide your total AR by that daily charge figure. The result is your days in AR.

Here's a clean example. A small group practice carries $90,000 in outstanding AR and bills about $3,000 in charges per day. That's $90,000 ÷ $3,000, or 30 days in AR.

A few common mistakes throw the number off:

Using collected payments instead of billed charges in the denominator
Picking too short a window so one slow week skews the average
Forgetting to net out credit balances from your total AR

Most practice management systems can pull this for you. If yours doesn't surface it, ask whoever handles your billing to run the days in AR formula each month.

What's a Good Benchmark? Target vs. Typical

This is where most articles mislead behavioral health practices. They quote one number and move on.

The honest answer has two parts: the target you want, and the typical you'll see.

For general medical practices, the standard benchmark is under 40 days, with under 30 considered strong.^[2] The behavioral health target lands in a similar place: under 40 days is healthy, and 30 to 35 is excellent.^[3]

But the typical reality is different. Some industry estimates put average accounts receivable days for behavioral health at roughly 65 to 75 days in 2025, up from 50 to 55 the year before.^[1] Tighter prior authorization rules and heavier documentation review have pushed payment timelines out.

So if you're sitting at 50 to 55 days, you're mid-pack right now, not failing. You still have clear room to work toward 40, but you're not the outlier you might have feared.

Behavioral health runs higher than general medicine for real reasons: prior authorization delays, longer payer processing windows, high session-based claim volume, and the layered documentation that community programs require.

A quick way to read your own number:

Under 40 days: strong, keep it up
40 to 60 days: watch it, look for patterns
Over 60 days: act now, something is backing up

One Number Isn't Enough: Read Your AR Aging

A single days in AR figure can hide a serious problem. Two practices can both report 45 days and be in completely different shape.

That's why you read your AR aging buckets, not just the headline number. Aging sorts your outstanding balances by how old they are:

0 to 30 days
31 to 60 days
61 to 90 days
90+ days

The 90+ bucket is the one to watch. When it grows past roughly 20% of your total AR, collectability drops fast and your overall number is about to spike.^[2] A clean AR aging report shows you that risk before it lands.

Aging also turns the metric into a diagnosis. If most of your aged balances are stuck before submission, you have a claims problem. If they're sitting after submission, you have a follow-up problem. If they're denials, you have a different fix entirely.

So picture those two 45-day practices again. One has its balances spread evenly and well-managed. The other has 25% of its AR frozen in the 90+ bucket, much of it unworked denials. Same number, very different futures. Consistent tracking of denials is often what separates the two.

When Your Benchmark Should Be Different

Not every practice should chase the same target, and holding yourself to the wrong one causes needless stress.

Program type matters. Intensive outpatient and partial hospitalization programs tend to run longer than standard outpatient therapy, because concurrent review and authorization cycles build delay right into the payment timeline. Holding them to a sub-30 target isn't fair.

Medicaid community programs carry their own rhythms too. ARMHS, CTSS, and EIDBI come with documentation and authorization steps that commercial plans don't have. A practice heavy in those programs shouldn't measure itself against a private-pay commercial clinic.

Payer mix and practice size shift the target as well. A solo therapist billing two commercial payers will look different from a group running six payers across two states.

Think of a Twin Cities practice that's heavy in CTSS and ARMHS, beating itself up for running 55 days while a private-pay clinic down the road sits at 35. That comparison isn't fair, and it isn't useful. The better question is whether your own number is trending the right direction over time, and whether the cost of handling billing in-house is quietly dragging it higher.

The rule is simple: benchmark against practices like yours, and against your own past, not a generic average.

Know Your Number, Then Watch It

The right days in AR benchmark for behavioral health is under 40, with 30 to 35 as a strong target. But the number that matters most is your own, tracked over time and read alongside your AR aging.

If you've never calculated yours, start there. The formula takes a few minutes, and the result tells you a lot about the health of your practice.

This is exactly what we do for the practices we serve. We track days in AR every month and review it with you in person, so the number turns into action instead of sitting forgotten in a report. When it starts to climb, you'll know why, and you'll have a plan to reduce your days in AR before small delays become 90-day problems.

If you'd like a clear read on where your practice stands, BreezyBilling is here to help.

Sources

Behavioral Health Billing: Reduce AR Days & Denials — CloudRCM Solutions, 2025
Days in AR in Medical Billing: Calculation, Benchmarks & Optimization — MediBill RCM, 2025
Behavioral Health Billing Metrics & KPIs: Best Practices for 2025 RCM Success — ICANotes, 2025

What's a Good Days in AR Benchmark for a Behavioral Health Practice?