The comparison is rarely as simple as a percentage versus a salary. The real question is total cost of collections — and what happens when your biller takes vacation.
What in-house billing really costs
A single experienced biller costs more than their salary. Add payroll taxes and benefits, practice management and clearinghouse fees, continuing education, coding reference subscriptions, workstation and software, and management time spent supervising.
Then add the costs nobody budgets: coverage gaps during vacation and turnover, the learning curve when a new hire arrives, and the concentration risk of one person holding all payer knowledge.
- Salary + 25–30% for taxes and benefits
- Clearinghouse and PM software seats
- Coding books, certifications, CEUs
- Recruiting and training on turnover
- Owner or manager supervision time
What outsourced billing costs
Outsourced RCM is typically 2.5–6% of collections depending on specialty, claim volume, and scope. Because it’s a percentage of what’s actually collected, cost scales with revenue instead of being fixed overhead — which matters most for practices with seasonal or growing volume.
The scope usually includes coding support, denial work, A/R follow-up, and reporting that would be separate line items in-house.
The metric that actually decides it
Compare total cost of collections: everything you spend to collect a dollar, divided by dollars collected. A cheaper in-house setup that collects 88% of allowable is more expensive than a 3% vendor that collects 97%.
Run the math on your own numbers: a practice collecting $2M with a 5-point improvement in net collection rate gains $100,000 — more than the entire vendor fee at most rates.
When in-house is the right answer
In-house works well when you have enough volume to employ two or more billers (so vacations and turnover don’t stop cash flow), a stable payer mix, and a manager who genuinely enjoys revenue cycle work and keeps current on payer policy.
When outsourcing wins
Outsourcing usually wins for solo and small groups, rapidly growing practices, specialties with complex coding, practices with a denial rate above 6% or A/R over 40 days, and any practice that has just lost its only biller.
Questions to ask any billing partner
Vendor quality varies enormously. Ask for specifics, not adjectives.
- What is your average first-pass acceptance rate, by specialty?
- Who works my account, and can I speak to them directly?
- How fast are denials triaged, and what's the appeal process?
- Will you work our legacy aged A/R?
- What reporting do we get, and how often do we meet?
- Are coders certified in our specialty?