A good A/R days number for most medical practices sits between 30 and 40 days, and anything past 50 usually means money is stuck somewhere between the visit and the deposit. A/R days, also written AR days, counts how long it takes on average to collect what you are owed.
The number matters because it moves cash. Every extra day in A/R is another day payroll, rent, and supplies come out of a credit line or your own pocket.
This guide shows how to calculate your figure, what to compare it against, and where the days tend to leak. Then it walks through fixes in the order a claim travels, from the front desk to the payer to the patient statement. Grab your current A/R balance and last year’s charges before you start. The formula takes about two minutes.
Key Takeaways
- Most practices aim for 30 to 40 days in A/R, and the AAFP calls anything under 50 days the minimum standard.
- Divide your total A/R balance by your average daily charges to get your number.
- In a July 2026 MGMA Stat poll, 32% of practices said days in A/R were higher than a year earlier.
- An average can hide trouble, so also check how much of your balance is older than 90 days.
- Most lost days trace back to front-end data errors, slow follow-up, or denials that sit unworked.
- If your number stays above 50 after you fix your process, outside help or A/R recovery may pay for itself.
How to Calculate A/R Days
Days in A/R equals your total accounts receivable, minus any credit balances, divided by your average daily gross charges. Average daily charges are your gross charges for the past 12 months divided by 365. The AAFP revenue cycle guide uses this same formula.
Here is a quick example. Say your practice carries $210,000 in A/R and billed $2,190,000 over the past year. Daily charges come to $6,000. Divide $210,000 by $6,000 and you get 35 days.
Some teams use net revenue instead of gross charges, or a rolling three-month window so the number reacts faster. Any version works if you pick one and stick with it. Switching methods mid-year makes the trend meaningless.
What is a Good A/R Days Number?
Most practices aim for 30 to 40 days. The AAFP says days in A/R should stay below 50 at a minimum, with 30 to 40 preferable. Treat that as a starting point, because specialty, payer mix, and patient share all shift the target.
| Days in A/R | What it usually means |
|---|---|
| Under 30 | Strong. Make sure follow-up isn't being skipped or balances written off too early. |
| 30 to 40 | Healthy for most practices. |
| 41 to 50 | Acceptable, but drifting. Check aging buckets and denials. |
| Over 50 | Money is likely stuck. Find out where before it ages further. |
Those ranges are our rule of thumb, built on the AAFP guidance.
A radiology group that bills a handful of large payers will run a different number than a pediatric office where parents owe a share of every visit. Practices that depend on prior authorization or on patient balances often run longer, since both add steps before the money lands.
Direction counts as much as the level. In a July 2026 MGMA Stat poll with 203 responses, 43% of practices said days in A/R were about the same as a year earlier, 32% said higher, and 22% said lower. Respondents pointed to payer delays and rising initial denials. If your number crept up this year, you have company. That doesn’t make it harmless.
The same article described one practice that cut its days in A/R from 67 to less than 34. Big drops are possible when the cause gets found.
Why A/R Days Climb
A claim can stall at almost any step.
The usual culprits are easy to name.
- Registration and eligibility errors that send claims to the wrong payer or plan
- Missing prior authorizations or referrals
- Claims held back for incomplete documentation
- Follow-up that happens monthly, or not at all
- Denials that get written off instead of appealed
- Patient statements that go out weeks after the insurance payment posts
Pull ten slow-paying claims and trace each one back to its first mistake. A pattern shows up fast. Our post on billing issues that hit provider revenue covers more of the common ones.
Fix the Front End First
The cheapest claim to fix is the one that never goes wrong. Most front-end problems come down to bad data captured at scheduling or check-in.
Verify coverage before the visit, not after the claim bounces. That means active coverage, the plan type, the copay and deductible status, and whether the service needs authorization. Our guide to verifying insurance eligibility breaks the process into steps your staff can follow.
Get authorizations in hand early. A missing one can turn an otherwise clean claim into a denial weeks later.
Collect copays and known balances at the time of service. It’s much easier to ask a patient at the desk than to chase them by mail.
Get Claims Out Clean and On Time
Every rejected claim adds days. Scrub claims for errors before they leave, and submit them electronically within a day or two of the visit. Waiting a week to batch charges quietly adds a week to your number.
Your clean claim rate tells you how well this step works. It is the share of claims that pay on the first submission without rework. If it’s low, rework is eating your staff’s time and pushing cash back.
MGMA Stat also pointed to 7% to 8% as a benchmark for first-submission denials. Measure yours and compare. Documentation matters here too, since a claim built from an incomplete note is a denial waiting to happen. Our piece on medical billing workflow best practices covers how to tighten the handoff between the chart and the claim.
Work Claims Weekly Instead of Monthly
Follow-up is where most A/R days are won or lost.
Give one person ownership of unpaid claims. Log every claim, and set a check date. Many offices look at status about two weeks after submission, then weekly after that for anything still pending. Sort the list by payer, so you can see which ones consistently run slow and how many days their claims sit.
If a claim has no response after 30 days, escalate it. Call the payer and ask what is holding it. Record the answer, so the next person doesn’t start over.
Watch timely filing limits as well. Set an alert on claims that are aging toward a payer’s deadline, because a claim past the limit is usually gone for good.
Weekly is a rhythm. Thirty minutes a day of steady follow-up beats one frantic day a month.
Treat Denials Like a Pipeline
A denial that sits for 60 days is a denial that probably stays unpaid. Log each one the day it arrives, sort it by reason, and assign someone to work it.
Patterns pay off. If one payer keeps denying for medical necessity, or one code keeps failing edits, fix the cause once instead of appealing the same issue forty times. Keep appeal templates for the common cases, and attach the documentation the first time.
Appeal anything you have a fair shot at winning. Writing off a winnable claim costs more than the hour it takes to appeal. A dedicated denial management process keeps this work from falling to whoever has a spare minute.
Collect From Patients Sooner
Patient balances are slow money. Many practices bill the patient only after the insurance payment posts, and then wait through a 30-day statement cycle. Shorten it.
Give estimates before the visit when you can, so the bill has no surprises. Keep a card on file with permission. Send the statement as soon as the payer’s response posts, and offer a payment link by text or email. For larger balances, a simple payment plan usually brings in more than a statement that gets ignored.
Train front-desk staff to talk about money without apology. A calm, practiced script raises collections at the window more than any software does.
Look Past the Average
A single average can hide a problem. A practice with 35 days in A/R could still have a pile of balances older than 90 days that the newer claims are covering for.
Break your A/R into buckets by age, such as 0 to 30, 31 to 60, 61 to 90, and over 90 days. Watch the share in the oldest bucket each month. A growing share is an early warning, even when the headline number looks fine.
Pair A/R days with your net collection rate. One tells you how fast you collect and the other tells you how much of what you were owed actually came in. A practice can be quick and still leave money behind. For a wider set of numbers, see key revenue cycle metrics for independent practices.
When Credentialing and Payer Delays Slow You Down
Sometimes the delay isn’t in your office at all. A payer can’t pay claims for a provider it hasn’t enrolled, so a new provider with pending enrollment can add weeks of claims that sit unpaid. Our medical credentialing work averages 85 days, which is why we tell practices to start well before a provider’s first day.
Slow payers are the other factor. Track average days to pay by payer. If one payer pays in 18 days and another takes 55, your blended number depends heavily on your mix. That is useful to know before you try to fix the wrong thing.
When to Bring In Outside Help
Some practices can fix this with a better routine. Others hit a wall.
Consider outside help if your number stays above 50 for two quarters after you have tightened your process. The same goes if staff turnover keeps resetting your follow-up habits, or if a backlog of old claims has grown past what your team can work. A revenue cycle consulting review can show where the days are going before you commit to anything.
If the problem is a pile of aged, denied, or underpaid claims, a focused A/R recovery effort can work those balances while your team keeps up with current claims.
Be honest about what a vendor can and can’t do. A billing company can’t fix bad registration data, and it can’t collect on claims that were never going to pay. It can work claims on a set schedule, chase denials, and report the numbers every month.
A 90-Day Plan to Lower Your A/R Days
Pick the order that fits your numbers, but this sequence works for most practices.
- Weeks 1 and 2. Calculate your A/R days and your aging buckets. Write the numbers down.
- Weeks 3 to 4. Trace ten slow claims back to the first error, and list the top three causes.
- Month 2. Fix the front end. Tighten eligibility checks, authorization tracking, and copay collection.
- Month 2. Start weekly follow-up with one owner and a clear list sorted by payer.
- Month 3. Build the denial log, write appeal templates, and clear anything older than 90 days.
- End of month 3. Recalculate. If the number hasn’t moved, decide whether you need help.
Expect the number to fall in steps, not all at once. New claims improve first, and older balances take focused work.
A/R Days FAQ
What is a good A/R days number for a medical practice?
Most practices aim for 30 to 40 days. The AAFP says days in A/R should stay below 50 days at a minimum. Your specialty and payer mix can move that target up or down.
How do you calculate A/R days?
Subtract credit balances from your total accounts receivable, then divide by your average daily gross charges. Average daily charges are gross charges for the past 12 months divided by 365. For example, $210,000 in A/R and $6,000 in daily charges gives 35 days.
What causes high A/R days?
Common causes include eligibility and registration errors, missing authorizations, unclean claims, slow follow-up, unworked denials, late patient statements, and slow payers. Tracing a sample of slow claims back to their first mistake usually shows which ones apply to you.
How fast can a practice lower its A/R days?
Front-end and follow-up fixes often start moving the number within a few months. Older balances take focused work, so expect the number to fall in steps instead of all at once.
What is the difference between A/R days and net collection rate?
A/R days measures how fast you collect. Net collection rate measures how much of the allowed amount you collect. A practice needs both, since it can be fast and still leave money behind.
What percentage of A/R should be over 90 days?
There is no single standard that fits every practice. Track the share of your balance older than 90 days each month and work to shrink it. A rising share is an early warning even when your average looks healthy.
Do A/R days differ by specialty?
Yes. Payer mix, prior authorization needs, and the share of patient-pay balances all change what is realistic. Compare yourself against practices in your own specialty when you can.
Can outsourcing billing reduce A/R days?
It can, when the company works claims on a set schedule, chases denials, and reports results every month. It can’t fix bad front-end data, so clean up registration and eligibility either way.
How often should I check A/R days?
Check them monthly, along with your aging buckets. Watching only the average can hide a growing pile of old claims.
Summary: Getting Your A/R Days Down With Medwave in Your Corner
A good A/R days number is one that stays in the 30 to 40 range and holds steady, with few balances aging past 90 days. Get there by fixing the front end, sending clean claims fast, working follow-up every week, and treating denials as a daily job.
Medwave handles medical billing, credentialing, and payer contracting for practices, and slow A/R often involves more than one of the three. A payer that hasn’t enrolled your provider can’t pay, and a weak contract rate can’t be fixed by faster follow-up. We have supported more than 15,000 providers and hold a 98% clean claim rate. You can read about our medical billing service.
Send us your A/R balance and last year’s charges, and we will tell you how your number compares and where the days are likely going. Book a consultation to get started.
Co-Founder and COO of Medwave, bringing more than 25 years of hands-on experience in healthcare revenue cycle management, payer contracting, and medical credentialing.