The AR Haircut Is Wrong in Both Directions

The house AR haircut missed by 14 points in one deal and 12 in another, in opposite directions. The status-level cut replaces the rule of thumb with a count.
Updated August 2026

Somewhere in every model is a haircut. The target’s receivables come in, an associate applies the house discount, 15 or 20 percent depending on the shop’s scar tissue, and the model moves on. It’s a rule of thumb doing a job that has an exact answer.

Both failure modes cost you

We’ve run the status-level version of that cut against the rule of thumb, and the rule misses in both directions.

In one review, the status sort showed 34 percent of the balance dead or dying: denied and untouched, unruled with no follow-up, or aging past filing deadlines. The house haircut of 20 percent would have overpaid for working capital by a seven-figure amount, and the write-off would have surfaced in year one as an operating problem instead of surfacing in the model as a price.

In another, the same sort showed 8 percent impaired. The receivables were clean, worked, and collectible, and a standard haircut would have priced the seller’s discipline as if it were the market’s sloppiness. That deal, a sharper bidder wins, or a well-advised seller walks.

Why the exact answer is available

The rule of thumb exists because aging reports are the only cut most diligence ever sees, and age genuinely doesn’t tell you much. Status does. Every claim in the balance is in a knowable state, recorded in the remit trail the payers themselves produce: paid, denied and worked, denied and abandoned, never ruled, expired. Sorting on it turns the haircut from a house average into a claim-level count. This isn’t hygiene. It’s deal math, and it’s sitting in data the seller already has.

What it does to the thesis

Quality of revenue is usually argued from payer mix and reimbursement trend. The status cut adds the dimension those miss: how much of booked revenue actually converts, and how much of the conversion failure is structural versus one bad quarter. A conversion problem you can fix operationally is margin you get credit for at exit. A conversion problem you didn’t find is the next buyer’s diligence finding, priced against you. Conversion is the operating half of what a sponsor is actually underwriting, and it is the half a model built on aging buckets cannot see.

One more test belongs in the same pass, because the seller’s own metrics are built to hide the answer. The days-to-pay figure management quotes is computed on paid claims only. Claims that stalled or died never enter the sample, so deteriorating conversion makes the quoted metric look better, and each payer counts once regardless of dollars. The check takes an afternoon: dollar-weight the figure and put open claims on a running clock. If the weighted number sits more than a few days off the quoted one, the revenue quality story has a survivorship problem, and the gap between the two is a rough sizing of it.

Where it lands in the model is specific. The status cut sets the working capital peg, and pegs built on aging buckets inherit the aging report’s blindness, which surfaces later as a net working capital true-up argument nobody enjoys. It reaches earnouts too: any earnout built on collections inherits whatever conversion error the diligence missed, so a misjudged AR base misprices the deal twice, once at close and once at every measurement date after. The cut costs days. The true-up fight costs a quarter.

Run it on one practice you’re evaluating or one you own. Seven days. If the status cut lands within two points of your house haircut, you’ve validated the rule. It usually doesn’t. Ask us to run it.

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