Percentage medical billing can cost less in a slow month and more in a strong month. A flat fee reverses that trade-off: the invoice stays predictable, but the practice still pays it when collections fall. Compare medical billing service prices using the same work and collection assumptions before choosing either arrangement.
The useful question is where the two proposals cross over, then whether they include the same labor. Our billing fee model explanation covers the contract differences. The scenarios below show how to use them.
Percentage versus flat fee: three monthly cost scenarios
Suppose Company A charges 5% of eligible collections and Company B charges $2,500 monthly. These are illustrative figures, not advertised provider rates. Assume equal scope and no minimums or extras for this first calculation.
| Monthly collections | 5% billing fee | $2,500 flat fee | Lower invoice |
|---|---|---|---|
| $30,000 | $1,500 | $2,500 | Percentage by $1,000 |
| $50,000 | $2,500 | $2,500 | Equal |
| $70,000 | $3,500 | $2,500 | Flat fee by $1,000 |
Divide the flat monthly charge by the percentage expressed as a decimal: $2,500 ÷ 0.05 = $50,000. That is the break-even collection level. For an annual estimate, calculate each month separately if activity changes substantially rather than treating the busiest month as normal.
Check four contract details before trusting the comparison
- Eligible collections: define patient payments, older A/R, refunds and payer takebacks. A percentage applied to different receipts produces a different invoice.
- Monthly minimum: a 5% proposal with a $2,000 minimum would cost $2,000 in the $30,000 month above, rather than $1,500.
- Volume limits: a flat fee may cover a fixed number of providers or claims, with extra charges beyond that allowance.
- Included work: coding, appeals, statements, patient calls and old-balance recovery must be aligned.
Our medical billing cost guide helps identify additional charges. Ask for a sample invoice using your own practice data.
When a cheaper medical billing invoice leaves more work behind
Imagine the flat-fee provider leaves patient calls with your receptionist while the percentage provider includes them. The invoice comparison is still arithmetically correct, but it omits the staff capacity needed to operate the first arrangement. Add retained duties to your decision sheet. Do the same for unresolved denials and payment reconciliation.
Use our medical billing company checklist to request a consistent responsibility list. Do not assume a higher percentage buys better follow-up; have each finalist demonstrate it.
Build the annual medical billing comparison
Record twelve months of expected collections, the fee calculation, minimums, transaction charges and one-time setup costs. Show the service scope next to the total. A practice choosing between proposals can then see both the likely annual invoice and the work its own team retains.
Read the detailed medical billing cost answer, then compare prices with the same providers, specialty and responsibilities in every request.
