The sliding fee scale, explained.
Discounted care isn't free care. It still has to be billed, documented, and reported correctly.
What is a sliding fee scale?
A sliding fee scale is a discount schedule that adjusts what a patient pays based on household income and family size, measured against the Federal Poverty Guidelines. HRSA requires every Health Center Program participant to maintain one: patients at or below 100 percent of poverty pay at most a nominal charge, patients up to 200 percent receive partial discounts, and the visit is still billed and documented rather than written off.
What the sliding fee discount program is
Health Center Program participants are required by HRSA to maintain a sliding fee discount program so that cost doesn't prevent people from getting care. Discounts are based on income measured against the federal poverty guidelines, applied through a schedule your center adopts.
The general structure is consistent across health centers:
- Patients at or below the poverty level receive the full discount, with at most a nominal charge
- Patients above that level receive partial discounts on a sliding scale as income rises
- Above the upper threshold, no discount applies
The federal poverty guidelines are updated annually, so your schedule has to be refreshed rather than set once. Confirm current thresholds and program requirements with HRSA.
How a sliding fee scale is created
The scale itself is a board-approved schedule the health center designs inside HRSA's rules. Building one comes down to five decisions:
- Anchor it to the Federal Poverty Guidelines. Eligibility is based on household income and family size only, measured against the FPG, which HHS updates every year. The scale has to be refreshed when the guidelines change.
- Set the tiers. HRSA requires a full discount for patients at or below 100 percent of poverty, with at most a nominal charge, and graduated partial discounts for patients between 100 and 200 percent. Above 200 percent, no discount is required. How many steps sit between those points is the center's design choice.
- Decide the nominal charge. If the center charges one, it must be a fixed, nominal amount a patient below poverty could realistically pay, and it isn't a copay or a deductible.
- Cover everything in scope. The schedule applies to all services within the health center's HRSA-approved scope of project, not just office visits.
- Write the eligibility policy. How income is assessed, what documentation is asked for, how often patients re-qualify, and what happens when a patient can't produce paperwork all belong in a board-approved policy, because that is what an operational site visit checks.
The current requirements live in HRSA's Health Center Program compliance manual; treat it as the authority when designing or updating a schedule.
How the discount is calculated
The calculation itself is simple: take the household's income and family size, work out where that lands as a percentage of the current Federal Poverty Guidelines, and read the discount tier off the schedule. At or below 100 percent of poverty the patient owes at most the nominal charge; between 100 and 200 percent they owe the discounted amount for their tier; above 200 percent they pay full charges.
Because the poverty guidelines change every year, the dollar thresholds behind each tier change with them, which is why we don't print figures here. Two operational details matter more than the arithmetic: the discount applies to the patient's responsibility, not to what insurance owes, and the visit is still billed at full charges with the discount applied afterward, so the encounter record stays intact for PPS, wrap-around, and UDS purposes.
The mistake that costs the most money
A sliding fee discount reduces what the patient owes. It doesn't mean the visit is unbillable.
If a patient has Medi-Cal, Medicare, or commercial coverage, that coverage is billed normally. The discount governs the patient responsibility portion, not the claim to the payer.
When a center treats discounted visits as charity care and never generates a claim, three things are lost at once:
- The insurance revenue the center was entitled to
- The encounter record, which matters for PPS, wrap-around reconciliation, and UDS
- Any patient balance that was genuinely owed under the schedule
None of it produces an error message. The visit simply never enters the revenue cycle.
Where sliding-fee billing goes wrong operationally
- Income information never captured. Without it, eligibility can't be determined and the default is often an incorrect one.
- The wrong discount tier applied. Usually a stale schedule that was not updated when the poverty guidelines changed.
- The self-pay balance never billed. The discount is applied and then nothing is issued to the patient at all.
- Discounts applied to insured patients incorrectly, which can create both revenue loss and compliance exposure.
- No documentation trail. The decision was reasonable but nothing supports it in a review.
- Inconsistent application across sites. Two locations of the same center applying the schedule differently is a genuine audit risk.
Why this is a billing issue and not just a front-desk issue
Sliding fee is usually treated as an intake responsibility, and intake is where the information originates. But the consequences land squarely in billing and reporting:
- Eligibility data drives whether a claim is built correctly
- Encounter capture drives PPS payment and wrap-around reconciliation
- Income data drives your UDS reporting
- Documentation drives whether any of it survives review
A billing partner who understands health centers should be flagging sliding-fee capture problems back to you, because they see the downstream symptoms first, in denials, missing encounters, and reporting gaps.
Keeping it clean
- Refresh your sliding fee schedule when the federal poverty guidelines update
- Capture income information consistently at every site
- Bill insurance normally, and apply the discount to patient responsibility
- Issue the patient balance that the schedule actually produces
- Keep documentation that shows the schedule was applied consistently
- Reconcile discounted encounters against your billing so none disappear entirely
This page is general information, not legal or compliance advice. Confirm current Health Center Program requirements with HRSA and review your own policy with your compliance advisors.
Primary sources
- HRSA Bureau of Primary Health Care: Health Center Program requirements, sliding fee discount program, and UDS reporting.
- California Department of Health Care Services (DHCS): Medi-Cal FQHC reimbursement, per-visit rates, reconciliation, and scope-change policy.
- Centers for Medicare & Medicaid Services (CMS): The FQHC Prospective Payment System, including the base rate CMS updates each year.
Common questions.
Does the sliding fee discount mean we can't bill insurance?
No, and this is the most costly misunderstanding. The sliding fee discount applies to what the patient owes. If a patient has Medi-Cal, Medicare, or other coverage, that coverage is still billed normally. The discount governs patient responsibility, not the claim.
Who qualifies for a sliding fee discount?
Eligibility is based on income measured against the federal poverty guidelines, applied through your center's approved sliding fee schedule. Patients at or below the poverty level generally receive the full discount with at most a nominal charge, and partial discounts phase out as income rises. HRSA sets the framework and your center documents the application of it.
Do we still have to collect the nominal charge?
HRSA doesn't force you to collect it; whether and how to charge the nominal fee is your center's board-approved policy decision. What HRSA does expect is a consistent, documented policy and to apply it uniformly, while never denying care to a patient who can't pay. What creates risk is inconsistency, not the amount, because inconsistent application is difficult to defend in a review.
How does sliding fee affect our UDS reporting?
Significantly. Your UDS report reflects who you served and their income levels, which is drawn from the same eligibility information the sliding fee program relies on. Sloppy income capture at the front desk shows up later as a reporting problem, not just a billing one.
What is the most common sliding-fee billing mistake?
Treating a discounted visit as unbillable and never generating a claim or a patient balance at all. The visit disappears from billing entirely, which loses both the insurance revenue and the encounter data your center needs for reconciliation and reporting.
How do you calculate a sliding fee scale discount?
Determine the household's income and family size, express that as a percentage of the current Federal Poverty Guidelines, and read the tier off your board-approved schedule. At or below 100 percent of poverty the patient owes at most a nominal charge; from 100 to 200 percent they receive a graduated partial discount; above 200 percent they pay full charges. The thresholds shift every year when HHS updates the guidelines.
How do you create a sliding fee scale?
Anchor it to the Federal Poverty Guidelines, set a full-discount tier at or below 100 percent of poverty with at most a nominal charge, build graduated tiers up to 200 percent, apply it to every service in your HRSA scope of project, and put both the schedule and the eligibility policy through board approval. HRSA's compliance manual carries the current requirements.
Do sliding fee scales require proof of income?
The health center decides how income is verified in its board-approved policy. Many centers ask for recent pay stubs or a tax return, and HRSA expects a reasonable assessment of income and family size, but it also expects the process not to become a barrier to care. A written policy for patients who can't produce documentation is part of a compliant program.
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