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Since 2010, the Affordable Care Act has required every hospital facility operated by a 501(c)(3) nonprofit organization to satisfy four requirements under IRS Section 501(r) — on a facility-by-facility basis — or risk losing its tax-exempt status. Two of the four are what make charity care work in practice.

01

Community Health Needs Assessment

A formal assessment of community health needs, repeated at least every 3 years, with a public implementation plan.

02

Financial Assistance Policy

A written, board-adopted FAP and emergency-care policy, publicized and applied consistently to every patient.

03

Limit on amounts charged

FAP-eligible patients can't be charged more than the "amounts generally billed" to insured patients — never full chargemaster rates.

04

Billing & collections limits

Hospitals must make a reasonable effort to check FAP eligibility before pursuing aggressive collection actions.

A FAP isn't just a brochure. Under Treasury Regulation §1.501(r)-4, it has to spell out, in writing:

  • Exactly who is eligible, and whether that means free care, discounted care, or both
  • The method used to calculate what a FAP-eligible patient will be charged
  • How to apply, including what documentation is required
  • Whether the hospital grants "presumptive" eligibility based on outside information
  • What happens if a bill goes unpaid — the actions the hospital may take and the timeline for taking them

It also has to be widely publicized: posted in full on the hospital's website, available as free paper copies at the ER and admissions desk, and translated into any language spoken by at least 1,000 people — or 5% of the community the hospital serves, whichever is smaller.

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The AGB rule

"Amounts Generally Billed": how your discount is actually calculated

Hospitals' sticker prices — the chargemaster — are notoriously disconnected from what anyone actually pays. The AGB rule under Section 501(r)(5) exists precisely to stop FAP-eligible patients from being billed off that inflated number. A hospital must use one of two methods, described in its FAP, to set the ceiling:

MethodHow it works
Look-backOnce a year, the hospital divides the total dollar amount Medicare (and/or Medicaid) actually paid on claims over the prior 12 months by the gross charges for those same claims — producing an "AGB percentage" applied to your bill.
ProspectiveThe hospital estimates what Medicare (and/or Medicaid) would have paid for your specific care, using current billing and coding rules, and charges that amount instead of a percentage.

Either way, AGB is a ceiling, not your final price. If you also qualify for free or further-discounted care under the income tiers in the hospital's FAP, that applies on top of — and usually well below — the AGB amount.

Presumptive eligibility

Sometimes you don't have to apply at all

Hospitals are allowed to determine that you're FAP-eligible using information they already have or can obtain elsewhere — without you filling out a form. Common triggers for this "presumptive eligibility" include current enrollment in Medicaid, SNAP, WIC, subsidized school lunch programs, or other means-tested public benefits, as well as referrals from third-party eligibility-screening vendors many hospitals use.

If a hospital presumptively determines you qualify for less than its most generous assistance tier, it must tell you the basis for that determination and give you a reasonable amount of time to apply for more generous assistance before any collection action moves forward.

Extraordinary Collection Actions (ECAs) must pause

Before taking any of these steps, a hospital must give 30 days' written notice and a plain-language FAP summary, and must keep your application window open for at least 240 days from your first post-discharge bill: selling your debt to a collector, reporting it to a credit bureau, requiring payment before further care, or pursuing a lawsuit, wage garnishment, bank levy, or property lien.

Step by step

From ER visit to approved application

  1. You receive care

    Emergency or other medically necessary care is provided — eligibility isn't decided at the point of care.

  2. You get an itemized bill

    Request an itemized statement and check it for duplicate charges or services you didn't receive before doing anything else.

  3. Locate the hospital's FAP

    It must be posted on the hospital's website, usually under "Billing," "Financial Assistance," or "Patient Resources."

  4. Request the application & plain-language summary

    Available free, in person or by mail, including at the ER and admissions desk.

  5. Gather documentation

    Typically recent pay stubs, a tax return, or a benefits award letter. Hospitals can't deny you solely for omitting something the form never asked for.

  6. Submit within the application period

    At least 240 days from your first post-discharge bill — submit earlier if you can, especially if collection notices have started.

  7. Hospital reviews your application

    It may request more documentation, but must process what you submit by the end of the application period.

  8. You receive a written determination

    Approval should state your discount tier and the new balance; the hospital must refund any amount you already paid above what a FAP-eligible patient owes.

  9. Appeal if needed

    If you're approved for less than expected, you can typically submit more documentation and request a re-review before any deadline passes.

Not every hospital is the same

Nonprofit, for-profit, and government hospitals play by different rules

Hospital typeWhat's required
Nonprofit (501(c)(3))A written FAP under IRS 501(r) is mandatory as a condition of tax-exempt status. Most U.S. community hospitals fall here.
For-profitNo federal 501(r) mandate, but EMTALA still requires emergency screening and stabilization regardless of ability to pay. Some states require charity-care policies of all hospitals regardless of tax status — check your state guide.
Government / publicOften subject to separate state or county indigent-care laws and funding pools, in addition to or instead of 501(r) if they also hold 501(c)(3) status.

One more distinction worth knowing: EMTALA (the Emergency Medical Treatment and Labor Act) requires any hospital with an emergency department to screen and stabilize you regardless of insurance or ability to pay. That's a separate obligation from charity care — EMTALA guarantees the care happens; your hospital's FAP determines what you'll ultimately be billed for it.

Common mistakes

Mistakes that cost patients money

  • Paying before asking

    Once a bill is paid, getting a refund is possible but slower and less certain than applying first.

    Avoidable
  • Using a medical credit card to pay

    These often carry deferred-interest terms that can backfire — and don't reduce what you actually owed.

    Avoidable
  • Assuming insurance disqualifies you

    Many FAPs explicitly cover insured patients facing high deductibles or coinsurance.

    Common myth
  • Missing the application window

    The 240-day clock starts at your first post-discharge bill, not your discharge date.

    Avoidable
  • Not appealing a low offer

    A presumptive or partial approval usually isn't final — you can typically submit more documentation.

    Avoidable

This is general information, not legal advice

Federal rules set a floor; your hospital's actual FAP — and any state law that applies to it — controls your specific situation. See our editorial process or read a specific question in the FAQ.

Sources

Where this page's claims come from

  1. 1.IRS, "Requirements for 501(c)(3) Hospitals Under the Affordable Care Act – Section 501(r)" — irs.gov
  2. 2.IRS, "Financial Assistance Policies (FAPs)" — irs.gov
  3. 3.IRS, "Limitation on Charges – Section 501(r)(5)" — irs.gov
  4. 4.IRS, "Billing and Collections – Section 501(r)(6)" — irs.gov
  5. 5.Congressional Research Service, "Legal Requirements for Section 501(c)(3) Hospitals" — congress.gov