When small practices compare in-house billing to outsourcing, the conversation often stops at one number: “A biller costs $X per year; a billing company wants Y% of collections.” That comparison is incomplete on both sides. It ignores burdened labor, software, coverage gaps, management time, and the cash you never see because denials aged out while someone was on PTO.
This article is a framework — not a sales script with invented savings percentages. Run your own numbers. Be honest about what your current process actually collects.
What “in-house” really costs
Start with cash compensation, then keep going:
- Wages and overtime for primary billing staff.
- Employer taxes and benefits — health coverage, retirement match, paid leave.
- Recruiting and ramp time when someone leaves. Billing knowledge is not free to replace.
- Software and clearinghouse fees if not already fully absorbed elsewhere.
- Manager attention — every escalation, payer call backlog, and month-end mystery lands on a physician-owner or office manager eventually.
- Coverage risk — illness, vacation, and resignation freeze follow-up unless you overstaff.
A solo biller who is excellent is a gift. A solo biller who is average — or overwhelmed — creates silent leakage that never appears as a line item named “we should have appealed that.”
What outsourcing really costs
Percentage-of-collections pricing aligns fees with posted cash, which is why many RCM firms use it. Still, evaluate:
- What counts as collections in the contract (insurance only? patient-pay? exclusions?).
- What is included — coding, denials, patient statements, credentialing, eligibility.
- Who owns old A/R at transition, and whether cleanup is a separate project.
- System access and security — BAA, access controls, audit expectations.
- Reporting cadence and whether you get denial root causes or only a production PDF.
- Exit terms — data return, notice period, and how claims in flight are handled.
Cheap percentage rates with shallow denial work are not a bargain. Expensive rates with transparent operations can still be rational if cash improves and owner time returns to clinic.
A simple comparison worksheet
Build two columns for the same trailing twelve months:
| Cost / outcome | In-house | Outsourced | |---|---|---| | Labor (burdened) | $ | n/a or reduced internal FTE | | Software / clearinghouse | $ | included or separate | | Billing vendor fees | $0 | % × collections (define base) | | Estimated leakage from unworked denials / aging* | $ | $ | | Owner/manager hours × value of time | $ | $ | | Total economic cost | $ | $ |
*Leakage is the hard part. Use denial reports and 90+ A/R as a proxy. You will not get a perfect number; you will get a better decision than salary-only math.
Qualitative factors that still count
Control. Some owners want a person down the hall. That is valid. Just price the control.
Specialty depth. A generalist biller may underperform on therapy units, OB globals, or behavioral health telehealth rules. Team-based RCM can spread specialty knowledge.
Growth. Adding a provider should not require a panic hire. Outsourcing scales more smoothly for many multi-site groups; excellent internal teams can also scale if you invest in process, not only headcount.
Culture. If your staff already drowns in payer portals, moving billing out can restore clinical capacity. If your biller is a cultural backbone who also runs front desk leadership, replacement is more than a job description.
Transition risk is real — manage it
Bad transitions lose claims. Good ones inventory open A/R, map payers, confirm enrollment, and set a go-live that does not orphan charges. Whether you switch vendors or bring billing back in-house later, demand a written handoff plan.
A decision rule that stays honest
Outsource when the total economic cost (including leakage and leadership time) is lower and you trust the operating model. Stay in-house when you have proven talent, redundant coverage, and denial metrics you would show a lender without flinching.
Do not decide from a homepage percentage alone — theirs or yours. Decide from your aging, your denial mix, and your capacity to supervise the work.
Medflux prices full-service billing as a percentage of collections, with no setup-fee theater and a free initial claims audit so you can see fit before you switch. Talk to us if you want a structured readout of your current process.
