If your medical bill is in the thousands, you don't have to fight it alone — a growing number of services will investigate the charges and negotiate on your behalf. But they don't all work the same way, and the fee structures vary enough to matter. Here's an honest, head-to-head comparison of the leading medical bill negotiation services in 2026, including our own.
Quick answer
The best medical bill negotiation service depends on how you want to pay. mediloop charges a flat fee with a money-back guarantee — best when you want predictable, capped cost. Goodbill, Resolve, and CareRoute charge a percentage of the savings they win — no win, no fee, but a bigger cut on large reductions. Dollar For is free but only handles hospital charity-care applications, not general negotiation.
A quick note on honesty: mediloop is one of the services in this comparison, so we have a stake in it. We've tried to describe every option fairly and accurately — including where a competitor or a free option is the better fit for your situation. Fees listed are as advertised at the time of writing and can change, so always confirm the current terms directly with each service before you sign up.
How we compared them
Medical bill negotiation services mostly do the same core work: request the itemized bill, audit it for errors and overcharges, verify your insurance processed the claim correctly, apply legal protections like the No Surprises Act, and negotiate the balance with the provider. Where they differ — and what we focused on — is:
- Fee structure — flat fee vs. a percentage of savings, and whether there's a cap or deposit
- What bills they handle — hospital-only vs. physician, lab, imaging, and ambulance bills too
- Provider-side vs. insurer-side — negotiating the bill vs. appealing the insurance claim
- Risk to you — what you pay if they can't reduce the bill
Services compared at a glance
A side-by-side look at how the leading services price their work. Scroll horizontally on mobile to see every column.
| Service | Best for | Pricing model | Typical fee | Notes |
|---|---|---|---|---|
| mediloop | Predictable, capped cost on any bill | Flat fee | $69 / $129 / $499 | Flat — never a % of savings |
| Goodbill | Hospital bills + charity-care screening | % of savings | ~20% of savings | $1,000 cap |
| Resolve | Complex bills, incl. collections | % of savings | ~10–25% (tiered) | No cap; deposit required |
| CareRoute | Both provider- and insurer-side disputes | % of savings | ~18–25% of savings | $1,000 cap |
| Medical Cost Advocate | Long-established, employer/individual | % of savings | ~25–35% of savings | No published cap |
| Dollar For | Hospital charity care only (free) | Free (nonprofit) | $0 | Charity-care apps only |
Fees as advertised at the time of writing (June 2026) and subject to change. Confirm current terms with each provider.
The services, reviewed
mediloop — best for predictable, capped cost
mediloop charges a flat fee — $69 for an EOB review, $129 to negotiate a single bill, or $499/year for unlimited bills — and never takes a percentage of your savings. On a large reduction, that's a meaningful difference: save $8,000 and a 25% service keeps $2,000, while mediloop's fee stays $129. The per-bill plan carries a 100% money-back guarantee, so if your bill isn't reduced, you pay nothing. Agent Loop handles hospital, ER, surgery, ambulance, and out-of-network bills. Best for people who want to know their exact cost upfront.
Goodbill — best for hospital bills and charity-care screening
Goodbill focuses on hospital bills, reviews them for coding errors, and also screens you for nonprofit hospital charity-care (501(r)) eligibility. It charges roughly 20% of the savings it achieves, capped at about $1,000, with no fee if it can't save you anything. Strong choice for a large hospital bill if you're comfortable with a percentage model.
Resolve — best for complex bills, including collections
Resolve assigns a dedicated advocate and handles negotiation, insurance appeals, and financial-assistance applications — and it will work bills that have already gone to collections. It uses a tiered percentage (roughly 10–25%) with no hard cap and typically requires an upfront deposit (around $249–$499) that's credited against the fee. Good for messy, high-dollar situations.
CareRoute — best for working both sides of the bill
CareRoute pursues reductions on the provider side (errors, charity care, direct negotiation) and the insurer side (claim denials, underpayments, appeals), and covers physician, imaging, and lab bills, not just hospital bills. It advertises no upfront cost and a fee around 18–25% of savings capped near $1,000.
Medical Cost Advocate — best for a long track record
Operating since 2002, Medical Cost Advocate serves both individuals and employer payers and negotiates and settles bills on your behalf. It charges a percentage of savings (commonly in the 25–35% range, with no widely published cap). A solid, established option if longevity matters to you.
Dollar For — best free option (charity care only)
Dollar For is a nonprofit that helps you apply for hospital charity-care programs at no cost. It does not negotiate bills in general — its single, valuable focus is getting eligible patients' hospital bills reduced or wiped out through charity care. If your bill is from a nonprofit hospital and your income may qualify, start here before paying for anything.
Dealing with a bill right now?
Agent Loop investigates the charges, catches errors, and negotiates directly — so you don't have to make a single call. Average savings of 60–80%.
Flat fee vs. percentage of savings
This is the single biggest decision, so it's worth understanding the trade-off clearly.
- Percentage of savings means you pay nothing if nothing is saved — but your cost rises with your reduction. A 25% fee on a $10,000 savings is $2,500. A cap (like $1,000) limits the downside, but not every service has one, and some require a deposit.
- Flat fee means you know your cost before anyone starts. You keep all savings above the fee, which is most valuable on large reductions. The trade-off is that on a small saving the flat fee could be a higher share — which is why a money-back guarantee matters: if the bill isn't reduced, you shouldn't pay.
Rule of thumb: the larger your expected reduction, the more a flat fee works in your favor. For a deeper look at fees and when professional help pays off, see Is a medical bill advocate worth it?
How to choose the right one
- Tiny or simple bill (under ~$500)? Try it yourself first with our hospital bill negotiation guide.
- Nonprofit hospital and low/moderate income? Apply for charity care (free) via Dollar For or directly.
- Large bill and you want a known cost? A flat-fee service like mediloop.
- Comfortable with a percentage and want zero cost if it fails? Goodbill, Resolve, or CareRoute.
- Bill already in collections or highly complex? Resolve specializes here.
Whatever you choose, confirm three things before signing: the exact fee, whether there's a cap or deposit, and what happens if they can't reduce the bill.
Frequently asked questions
What is the best medical bill negotiation service?
There's no single winner for everyone. Choose a flat-fee service when you want a predictable, capped cost; choose a percentage service when you'd rather pay nothing unless they win; and start with a free charity-care nonprofit if you may qualify based on income.
Are these services worth it?
For bills over about $1,000 — especially hospital, surgery, ER, and out-of-network bills — they usually pay for themselves, because roughly 80% of bills contain errors and trained negotiators know where to look.
Will using a service hurt my credit?
No. Negotiating or disputing a bill doesn't affect your credit. (Medical debt reporting rules also changed in 2025 — see does medical debt affect your credit score.)
Was this article helpful?
Get new guides in your inbox
From Agent Loop — practical, no-fluff tips on fighting medical bills.
No spam, ever. Unsubscribe any time.
