An underwriter looking at a practice file will often open the accounts receivable aging before the profit and loss statement. That order is deliberate. The P&L is a summary somebody prepared; the aging is a raw record of who owes the practice money and how long they have owed it. It is harder to dress up, and it answers a question the P&L cannot: does this practice convert the work it performs into cash, reliably, without heroics.
Payer mix is the second half of that picture. A practice collecting $1.4 million from a broad base of commercial contracts and patient payments is a different credit from one collecting $1.4 million where a single carrier is 60 percent of the total. The dollars are identical. The risk is not. This piece covers how both sets of signals get read, what a strong version looks like, and which weaknesses are fixable inside a quarter.
Net collection rate: the number that matters
Net collection rate is collections divided by net production, where net production is gross production less contractual adjustments. It answers the only question that counts: of the money the practice was actually entitled to under its contracts, how much did it get.
Gross collection rate (collections over gross production) is the number practices quote most and lenders trust least, because it moves whenever the fee schedule changes. Raise your posted fees by ten percent with no change in contracts and your gross collection rate drops while nothing real has happened. Net collection rate is insulated from that.
A net collection rate in the mid-nineties is generally read as a well-run revenue cycle. Materially below that invites questions: are claims being denied and not reworked, are patient balances being written off quietly, is somebody not following up. The specific threshold varies by specialty, payer mix and lender.
Days in accounts receivable and the aging buckets
Days in AR is total receivables divided by average daily net production. It converts a balance into a duration, which is what an underwriter wants: a $190,000 receivable balance means nothing until you know whether it represents three weeks of production or three months.
| Bucket | What it usually represents | How it is treated |
|---|---|---|
| 0 – 30 days | Normal claim and statement cycle | Full credit; expected to be the largest bucket |
| 31 – 60 days | Slower payers, first statement cycle on patient balances | Normal, watched for growth |
| 61 – 90 days | Denials being reworked, patient balances not yet resolved | Discounted; concentration here signals a process gap |
| 91 – 120 days | Claims with a real problem | Heavily discounted in any borrowing base |
| Over 120 days | Usually uncollectible in practice | Generally excluded; should already be written off |
The treatment column is illustrative and varies by lender and program. What is consistent is the direction: value falls fast with age, and a large over-120 bucket that has never been written off is read as an accounting problem rather than an asset.
Payer mix: four categories, four risk profiles
Payer mix describes where collections come from. Underwriters group it coarsely, because the fine distinctions matter less than the timing and predictability of the cash.
| Category | Cash timing | Predictability | Principal risk |
|---|---|---|---|
| Commercial insurance | Weeks, contract-dependent | High once contracted rates are known | Contract renegotiation and credentialing lapses |
| Government programs | Generally predictable but rate-dependent | High on volume, lower on rate | Reimbursement policy changes outside your control |
| Patient responsibility and self-pay | Immediate at point of service, or slow if billed | Depends entirely on collection discipline | Bad debt and economic sensitivity |
| Membership or subscription plans | Recurring and immediate | Very high while enrollment holds | Churn, and the cost of honoring the plan |
None of these is inherently good or bad for a credit file. What matters is whether the mix is stable, whether it is documented, and whether any one line is large enough that losing it would break coverage.
Concentration is the risk nobody volunteers
Ask a practice owner about payer risk and the answer is usually about reimbursement rates. Ask an underwriter and the answer is about concentration. A single payer at 55 or 60 percent of collections means a contract renegotiation, a network change or a delayed credentialing renewal is a solvency event rather than a bad quarter.
Concentration is not always fixable, particularly in specialties where one carrier dominates a region. It is, however, always explainable. A practice that knows its exposure, has the contract terms and renewal dates on hand, and can describe what it would do about a rate cut is treated differently from one that has never looked.
Credentialing as a revenue continuity issue
Credentialing is administrative until it is not. A lapsed enrollment with a significant payer stops that payer's claims from paying, and reinstatement is rarely fast. Timelines vary considerably by payer and state. For a lender, an unmanaged credentialing calendar is a signal about operations generally.
It matters most in two situations. First, when a new provider joins: production begins immediately, collections do not, and the gap has to be funded. Second, in an acquisition, where the buyer's enrollment is separate from the seller's and the transition can interrupt cash for weeks. Both are foreseeable and both should be in the working capital plan.
Adjustments, denials and what the write-off line says
The adjustment line on a practice P&L is a mixture of two very different things: contractual write-downs, which are the price of being in network and are entirely expected, and everything else: denied claims never reworked, courtesy discounts, bad debt. Underwriters want them separated, because the first is structural and the second is a management signal.
A denial rate that runs into the double digits with no rework process behind it means the practice is doing work it does not get paid for. That shows up eventually as a lower net collection rate, but it shows up first in the detail, which is why the detail gets requested.
The point-of-service question
How much of the patient-responsibility portion is collected at the time of service is a fast proxy for revenue cycle discipline. Practices that collect co-pays and estimated patient portions before the patient leaves carry lower receivables, shorter days in AR and less bad debt. It costs nothing but policy and training, and it is visible in the aging within a couple of months.
Assembling the collections file
What to pull before a lender asks
- Production, adjustments and collections by month for 24 months, by provider.
- Accounts receivable aging by standard buckets as of the most recent month end.
- Insurance AR and patient AR shown separately.
- Payer mix report: collections by payer or payer category, with percentages.
- Write-off report for the trailing 12 months, split between contractual and other.
- Denial detail if your system produces it, with the rework process described in a paragraph.
- Credentialing status by payer with renewal dates, including any provider in process.
- Contracted fee schedule summary and any renegotiation dates you know about.
- Point-of-service collection percentage if tracked, or the policy if not.
Handing that set over with the application does two things. It removes several rounds of back-and-forth, and it signals that the practice measures itself, which is not scored formally anywhere but affects every judgment call in a file.
What is fixable inside a quarter
Some of this moves quickly. Writing off genuinely uncollectible balances is immediate and improves the readability of everything else. Tightening point-of-service collection shows up in the aging within two months. Reworking the 61-to-90 bucket, where claims usually have a specific and fixable problem, converts real dollars.
Payer mix is the slow one. Adding or dropping contracts, building a membership plan, or shifting toward a different case mix takes several quarters and changes the practice, not just the reporting. If concentration is your weak point and the capital need is near-term, the better play is usually to document the exposure honestly and let the structure account for it.
What net collection rate do lenders want to see?
There is no universal number and it varies by specialty and payer mix, but the mid-nineties is broadly regarded as healthy for a well-run revenue cycle. What matters more than hitting a specific figure is that the rate is stable across months and that any decline has an explanation attached to it.
Can I borrow against my accounts receivable?
Some structures allow it, and availability, advance rates and eligibility rules vary considerably by lender and program. Expect aggressive discounting by age, exclusion of anything past 90 or 120 days, and possible exclusion of certain payer types. Most practice loans are underwritten on cash flow with receivables as supporting collateral rather than the primary basis.
Does a high share of government payers hurt my file?
Not by itself. Those programs pay predictably, which underwriters value. The concerns are rate exposure to policy changes and, in some regions, concentration. A practice with a heavy government share and a demonstrated ability to run at that reimbursement level is a perfectly ordinary credit.
I am adding an associate. How should I plan the cash gap?
Assume production starts before collections do, and that credentialing with each payer runs on its own timeline that you do not control. Budget salary, benefits and supplies for the ramp period, plus a buffer, and have that funded before the start date rather than after. Lenders view a documented ramp plan far more favorably than a surprise dip in the operating account.
Should I write off old receivables before applying?
Generally yes, if they are genuinely uncollectible. Underwriters discount aged balances close to zero regardless, so keeping them on the books buys you nothing and distorts your days in AR and collection rate. Clean books read as managed books.
My days in AR spiked for two months. How much does that hurt?
Much less than a sustained trend, provided you can explain it. Software conversions, a billing staff departure and a payer system change are all common causes and all get accepted with a short written explanation. What gets penalized is a spike nobody in the practice noticed.
How is payer mix verified?
Usually from your own practice management reports, cross-checked against deposits and the tax return. Underwriters are not typically contacting carriers, but they will notice if the reported mix does not square with the deposit pattern in the bank statements, and that discrepancy will need resolving.
Does going out of network improve my collections metrics?
It changes them rather than improving them. Contractual adjustments shrink, which lifts the gross collection rate, but patient-responsibility balances grow and those are harder to collect. Net collection rate is the honest comparison, and the transition period usually looks worse before it looks better.
Where to start
Run one report: production, adjustments and collections by month for the last twenty-four months. Compute net collection rate for each month and put the twenty-four numbers in a row. A flat line in the nineties is a strong file. A sawtooth is a conversation you want to have prepared for, and a downward slope is something to fix before you apply rather than explain after.
Then pull the aging and total the over-120 bucket. If that number is meaningful and has been sitting there for years, write it off now. It is the cheapest improvement available to a practice file.
Qualified Commercial Underwriting Desk
Credit and capital markets
The Qualified Commercial underwriting desk reviews commercial real estate, dealer and Main Street files daily. The Academy is written from that work (how files are actually read, priced and declined) rather than from a rate sheet.
Educational content only. Nothing here is a commitment to lend, an offer of credit, or tax, legal or accounting advice. Program terms, timelines and thresholds vary by lender, file and market conditions, and any figures shown are illustrative.