ABA Billing / Build vs Co-Source

The True Cost of In-House ABA Billing

If you run a 20-center ABA group and you are weighing whether to keep billing in-house or hand it to an ABA billing company to outsource, start here. The instinct to keep billing close is not wrong. Losing sight of authorizations and clinical data is a real risk. The answer is not "we are cheaper." The answer is co-source plus visibility.

ANSWER FIRST: Co-source the work, keep the control. You should never give up the two things you fear losing.

Here is the honest version most vendors will not tell you. The in-house objection is correct. Billing sits on top of authorizations and clinical data, and those two things are the beating heart of an ABA practice. So the real question is not "in-house or outsourced." It is: how do you get specialist throughput and daily visibility without handing over the wheel?

The number that fools everyone: the cost of collecting is not the cost of billing

A billing salary looks affordable on a spreadsheet. The salary is not the cost. The cost is everything it takes to actually collect the money, fully loaded. Below are clearly labeled illustrative industry benchmarks for a 20-center group, not any client's actuals.

Net Collection Rate

4-9 pts

Typical lift illustrative range when denials and AR are worked daily instead of monthly

Days in AR

-15 to -25

Illustrative reduction when clean-claim rate and same-day denial work improve

Auth-Unit Utilization

Weekly

Watched against the authorization, not discovered at month-end when units are already burned

Coding Accuracy

95%+

ASP-RCM adaptive-behavior coding accuracy benchmark; manual baselines commonly sit lower

Build vs Co-Source: the total cost of collecting

Same twenty centers. Two ways to pay for the same outcome. The riser on the left is what an in-house department truly costs once you load every component. The riser on the right is a percentage-of-collections co-source model, illustrative only.

Highertotal cost of collecting

BUILD / IN-HOUSEFully-loaded FTEs + clearinghouse + software + management + turnover

Lowerand variable with volume

CO-SOURCE% of collections, specialist team, daily rhythm, your control retained

The gap is not a discount. It is fixed cost you no longer carry when volume dips, plus the collections a daily worked queue recovers that a single overloaded biller quietly writes off. Bars are illustrative and to scale for comparison, not dollar figures.

The fully-loaded FTE cost model

"We already have a biller" hides the real math. A fully-loaded billing department is FTE cost plus clearinghouse plus software, plus the parts nobody budgets: supervision, PTO coverage, and the cost of turnover in a hard-to-hire role. Figures below are illustrative industry benchmarks.

Build / In-HousePer year, illustrative

Billing / AR FTEsfully loaded: salary + payroll tax + benefits$$$$

Clearinghouseper-claim + monthly platform fees$$

Billing / PM softwareper-provider or per-seat licensing$$

Supervision + coveragemanager time, PTO gaps, single-point-of-failure$$

Turnover + ramprehire, retrain, backlog while a seat is empty$

Fully-loaded cost of collectingFixed, whether claims flow or not

Co-Source% of collections

Specialist ABA billing teamcoders, AR callers, denial specialists includedincl.

Clearinghouse + softwarecarried by the partner, not your P&Lincl.

Coverage + redundancyno single-biller risk, no ramp gapsincl.

Daily reporting + dashboardsnet collection rate, days in AR, auth utilizationincl.

You keepauthorizations and clinical data ownershipyours

You pay only when you collectVariable with volume

The counter to the in-house objection

Control is not a reason to build. It is a reason to co-source correctly.

The fear behind "we want to keep it in-house" is almost always two things: losing control of authorizations, and losing control of clinical data. A good co-source model does not take either. You keep the authorization approvals and the clinical record. The partner runs the queue, works the denials, and shows you every number daily. You gained a team and lost nothing you were protecting.

The two feared stations, shown out loud

A serious partner does not bury the two stations you care about most. They put them first and make them visible every single day.

Feared Station 1

Authorizations stay under your roof

Authorization-unit utilization is tracked against the approved units, not discovered at month-end when the units are gone. You approve, you see the burn-down, and no session is delivered against an authorization that cannot be billed. The partner surfaces gaps early; the decision stays yours.

Feared Station 2

Clinical data never leaves your control

Session notes, BCBA supervision records, and RBT-delivered service logs remain your system of record. Billing reads from it under a clear boundary. No PHI is moved where it should not be, and the clinical team, your BCBAs and RBTs, keeps ownership of the documentation that drives every claim.

A daily worked rhythm, not a monthly surprise

Worked every business day The difference between a build that leaks and a co-source that collects is cadence. Monthly billing means denials age and authorizations burn unseen. Here is the daily rhythm, with the two feared stations gold-flagged at the front.