You have a medical billing company proposal on your desk, and one percentage sits near the top. If it looks low, you lean toward yes, and if it looks high, you lean toward no. That’s how plenty of owners decide, but it’s also how you can sign a "cheap" rate and still feel money leaking six months later.
Here’s the real medical billing company cost: the percentage is only the easy part. What that percentage multiplies, which jobs the contract leaves out, and what still sits on your own staff decide the number you actually pay. None of those three is printed in large type.
Owners who already got burned run those checks on one closed month before they compare rates, and you can too, before you sign.
The real cost in four layers
Rate tables online stop at the percentage, and that isn’t enough to decide. The honest answer has four layers the rate doesn’t show:
- The base – what the percentage multiplies
- The scope – which billing jobs it covers, and which it leaves out
- Fees outside the rate – setup, statements, clearinghouse, and other invoice lines
- Cost that never hits their invoice – your staff cleaning up what the rate quietly skipped
Add the three, and that’s the view that beats a rate table.
Easy claims fund their margin. Denials eat yours.
Here’s the trap that matters more than the rate.
A billing company makes most of its margin on claims that sail through with no one touching them. Visit to charge to claim to payment, with no denial, no chase, no phone call. That’s the happy path, and it’s cheap for them to run.
The real work, and the work that eats the hours, sits in the denials: a denial is an insurance company saying no, with a reason. Someone has to read it, fix it, appeal it, or prove why the visit should have been paid. That takes time, and it’s also where unpaid dollars sit, and where hard-earned profit can drain without a loud alarm.
Watch what happens next at companies that live on the happy path: they promise the world on denials in the sales call, and then the hard ones sit. Or they find a reason to write the balance off, because working that denial eats into the profit they already booked on the easy claims. Their percentage still looks fine, but your unpaid denials don’t.
So when you read a proposal, don’t only ask what percentage they charge. Ask how they work denials, how old a denial can get before they stop, who owns the ones that take real time, and how write-offs get approved. If the contract makes it easy to walk past the hard pile, the "cheap" rate is funding their happy path, not recovering your money.
Do this on one closed month
Hand this to whoever owns the billing decision:
- Run the proposed rate three ways: against charges, against collections, and against collections after refunds and takebacks. Write down how far the bill moves when only the base changes.
- List every job a real billing operation does. Mark which the contract covers and which it excludes. Put a bright mark on denials: how they’re worked, how old before they stop, and who approves a write-off.
- Add every fee that sits outside the percentage (setup, enrollments, statements, clearinghouse, projects).
- Add the two costs that never hit the invoice: hours your people spend before the claim, and hours a manager spends watching the vendor.
- Do the same math for the in-house option and for any second proposal. Put both on one page.
Take nine questions into the meeting, because the lower rate isn’t always the lower bill once the base, the fees, the excluded work, and the denial follow-through are in the same view.
Layer 1 – The percentage is taken from something
A rate means nothing until you know what it multiplies.
A company can take its cut of:
- everything you billed (charges)
- everything you collected
- or what you collected after refunds and takebacks (money an insurance company pulls back after it has paid)
The same rate on charges instead of collections bills you for money you never received, and the same rate before takebacks bills you on payments that later left.
Ask which base the percentage uses, in writing, because the base moves the bill more than a point or two on the rate ever will.
Layer 2 – What the percentage covers (and quietly does not)
Billing is five jobs bundled into one word:
- Turning visits into charges
- Sending claims
- Working denials
- Recording payments
- Following up with patients on what they owe
A percentage that covers the first four and stops at the fifth leaves patient follow-up on your front desk or on an extra charge.
Read the scope for the jobs it names and the jobs it doesn’t.
A denial worked is revenue, but a denial the contract sets aside after a certain age is money the company can walk past, while it still takes its cut of the easy claims.
Layer 3 – Charges that sit outside the rate
The percentage is rarely the whole invoice, and these can each carry their own line:
- Setup
- Insurance enrollments (the paperwork that lets your claims and payments move electronically with each insurance company)
- Statement printing and postage
- The clearinghouse fee (the charge for the middleman service that carries claims to insurance companies)
- Special projects
None of these is a trick on its own: the trap is comparing one company's bare percentage to another company's percentage-plus-fees, and thinking you compared the same thing.
Layer 4 – Cost that is not on any invoice
Some of the cost of outsourced billing never appears on the company's bill: it stays inside your building.
Someone has to own the steps before the claim: the visits that never became charges, and the claims built and never sent, because the company can’t bill what never reaches it.
Someone has to read what the company reports and decide whether it’s working, and that’s a standing draw on a manager's week.
And you have to build your own view of what’s stuck, because a monthly pack of totals tells you the size of a problem and never where it sits. That view is the real price of managing a vendor from a distance.
Why a cheap rate can be the most expensive
A low percentage earns attention, and it can hide the highest cost of all, especially the happy-path trap above.
A rate that looks cheap may be:
- taken from a base that inflates the bill
- paired with fees that make up the difference
- or written so the company banks the no-touch happy-path claims and soft-pedals the denials (the work that eats the hours), including write-offs that protect their margin instead of your cash
The claims a company declines to chase don’t stop existing: they pass the filing deadline (the insurance company's cut-off for accepting a claim) and turn into money that’s simply gone.
Where a billing company sits on the path
Here’s the path, in plain words, so the "before the claim / after the claim" split is clear:
- A visit happens.
- Someone turns it into a charge (the visit written up as a billable line).
- The charge becomes a claim, the bill sent to the insurance company.
- The insurance company answers with a payment or a denial (a refusal to pay, with a reason code).
- Someone records the answer, and the patient pays their share.
A billing company earns its percentage on the part of that path that starts once a claim exists. The steps before the claim stay inside your practice, and so does the work of knowing whether the company is doing its job.
If you haven’t yet worked out whether your delay even sits where a billing company can reach it, start there, because this piece is about the cost once you have.
What this means for you
You now have the four layers, the happy-path trap, the five-step check, and the reason a low rate can still hurt, so run the check on one closed month before you sign. Put every proposal on the same page, press hard on denials, then decide.
Grab 30 minutes with us. Prep nothing. You will see the full cost of your billing arrangement: the parts on the invoice and the parts that never reach it.
Questions people ask
How much does a medical billing company cost?
Billing costs about 5% of what a practice collects, in-house or outsourced, by an MGMA rule of thumb from June 2025. What the percentage is taken from matters more than the rate: what you billed, what you collected, or what you kept after refunds gives three different bills. Expect that fee to cover the hard work, the denials (claims an insurer refused), not just the easy claims.
Is the percentage the only thing a medical billing company charges?
No. Setup, insurance enrollments, statements and postage, the clearinghouse fee, and special projects can each be billed on top of the rate. The clearinghouse is the middleman that carries claims to insurance companies. Two more costs never reach their invoice: your staff’s hours on the steps before the claim, and a manager’s time checking whether the company is doing its job.
What does a medical billing company not do?
It doesn’t touch anything before a claim, the bill sent to the insurance company, exists. A visit that never became a charge, or a claim built and never sent, stays inside your practice, because the company can’t bill what never reaches it. Some contracts also stop before patient follow-up, which leaves that job on your front desk. Read the scope for the jobs the percentage doesn’t name.
Why can a cheaper medical billing rate cost more?
Because a low rate can be taken from a base that inflates the bill. It can also be paired with fees that make up the difference, or written so the company profits on claims nobody has to touch. Those contracts go soft on denials, the insurance company’s refusals to pay. Denials nobody chases pass the filing deadline and turn into money that’s simply gone.
How do I compare two medical billing company proposals?
Run both against the same closed month, on one page. Apply each rate to the same base, add every fee outside the percentage, and mark which jobs each contract leaves out, especially denials. Ask how write-offs get approved. Then add the costs that stay with you either way, because the lower rate isn’t always the lower bill.