Hospital Intelligence Brief
Why Higher Patient Volume Does Not Always Improve Hospital Financial Performance
A hospital can treat more patients, bring in more revenue and still finish the year with a weaker margin. Understanding why means looking past the volume headline.
Short answer
Higher patient volume improves a hospital’s margin only when each additional patient brings in more revenue than the extra cost of caring for them. If expenses grow faster than revenue, if new volume comes from poorly paid sources, or if capacity must be added to handle it, margin can fall even as volume rises.[1][2][3]
Why can volume rise while margin falls?
Leadership sees the signs of a good year: more patients, more revenue, full units. Then the financial statements arrive and operating margin has slipped. The instinct is to blame volume, or the wrong kind of volume, or simply to cut. But the arithmetic is straightforward. Operating margin is operating income divided by operating revenue, which means it declines whenever expenses grow faster than revenue, no matter how many patients are treated.[1]
Volume is a driver of both numbers. Each added admission or visit brings revenue, and it also brings supplies, drugs, nursing hours and sometimes new equipment or beds. If the revenue per patient is lower than the cost per patient, then more volume produces a larger loss, not a larger margin. A hospital can therefore be growing and weakening at the same time.
What does it cost to add a patient, and what does the patient bring in?
Think of three layers. The first is variable cost, such as supplies and drugs, which rise with every patient. The second is semi-variable cost, mainly staffing, which rises in steps: the 20th nurse on a unit may not be needed until the census reaches a certain level, and then a new shift or float pool is required. The third is fixed cost, such as the building and core equipment, which does not change until capacity is added.
The revenue side depends on who is paying. Medicare pays hospitals using prospectively set rates based on the patient’s diagnosis-related group, so a hospital that spends more than the rate on a case absorbs the difference.[4] MedPAC found that in FY 2024 fee-for-service Medicare payments were well below hospitals’ costs in aggregate, with a Medicare margin of −12.1 percent, although payments were close to costs for the median hospital MedPAC classed as relatively efficient.[2] A hospital whose growth comes mainly from Medicare patients is therefore adding volume at a thin or negative contribution unless its costs are well controlled.
Commercial payers typically pay more, but payer mix is not the only factor. The AHA reports that Medicare Advantage plans reimbursed hospitals only 49 percent of cost for patients held in observation status in 2024, a figure it drew from industry benchmark data, and that hospital reimbursement from Medicare Advantage fell 8.8 percent on a cost basis between 2019 and 2024.[3] These are industry assertions from a hospital trade association, and they should be read as such, but they illustrate why “where the volume comes from” matters as much as “how much volume there is.”
Are costs rising faster than revenue across the sector?
Several sources suggest expense growth is a sector-wide pressure, although they differ on how severe it is. The AHA’s 2025 Cost of Caring report says total hospital expense grew 5.1 percent in 2024, outpacing general inflation of 2.9 percent, and that Medicare’s net inpatient payment rates rose 5.1 percent between 2022 and 2024 while general inflation rose 14.1 percent.[3] The Kaufman Hall National Hospital Flash Report for August 2026 reported year-to-date operating margins of 2.5 percent including allocations and noted that non-labor expense per adjusted discharge was up 6 percent compared with 2025.[5]
MedPAC’s picture is more mixed. It reported that hospitals’ all-payer operating margin rose to 6.5 percent in FY 2024, up 1.3 percentage points from 2023 and close to the pre-pandemic 6.7 percent in 2019, partly because labor cost growth slowed to under 2 percent in 2024 from about 9 percent in 2023.[2] The commission also noted that about half of the increase in the 2024 margin came from one-time payments to offset earlier lower Medicare payments for drugs acquired under the 340B program.[2] The lesson for a single hospital is that sector averages hide wide variation. A quarter of hospitals had a margin below −2 percent while another quarter exceeded 12 percent.[2]
How can a leadership team test whether growth is helping?
Start with a simple comparison over several periods: revenue growth, expense growth and the change in margin, side by side. If expense growth exceeds revenue growth for several quarters, the issue is structural rather than a one-time event. Then break the expense growth into labor, supplies, purchased services and other categories to see which grew most.
Next, compare revenue per case and cost per case. If revenue per case is flat while cost per case is rising, the hospital is absorbing inflation. If revenue per case is falling because of payer mix or observation-status patterns, the issue is on the revenue side. An invented example illustrates the point: a hospital grows from 10,000 to 10,800 cases (8 percent), revenue from $200 million to $212 million (6 percent) and expenses from $190 million to $206 million (8.4 percent). Operating margin drops from 5.0 percent to 2.8 percent even though volume rose. The numbers are illustrative, not from any real hospital.
Finally, look at capacity. MedPAC reported that hospital occupancy was about 71 percent in aggregate in FY 2024, with some hospitals below 13 percent and others above 90 percent.[2] A hospital with spare beds can often absorb additional patients cheaply. One running close to capacity may need new staff, beds or equipment, which changes the economics of each additional patient.
What should leaders do next?
Treat volume as a hypothesis, not a result. Before celebrating or cutting, determine what the incremental patient contributes after variable and step-fixed costs, which payers are driving growth, and whether capacity limits are about to force new investment. Many hospitals discover that a small number of service lines or payer categories explain most of the margin gap, which makes the response much more targeted than a general cost reduction.
The interactive example at the end of this page lets you vary volume, price and cost to see how margin responds. It uses invented figures for illustration only.
Frequently asked questions
Can a hospital lose money while treating more patients?
Yes. Operating margin falls whenever expenses grow faster than revenue, so added volume that brings less revenue than cost reduces margin.[1]
Do Medicare patients make hospitals money?
On average, no. MedPAC reported a fee-for-service Medicare margin of −12.1 percent in FY 2024, though payments were near costs for relatively efficient hospitals.[2]
What is a good hospital operating margin?
There is no single standard. MedPAC reported a 6.5 percent all-payer operating margin in FY 2024, and Kaufman Hall reported 2.5 percent year to date through August 2026, using different samples and methods.[2][5]
What drives hospital expense growth?
Labor is the largest category, at 56 percent of hospital costs according to the AHA, and non-labor costs such as supplies and drugs have also risen faster than volume per Kaufman Hall.[3][5]
How do I know if my volume growth is profitable?
Compare revenue per case with cost per case by service line and payer, and check whether capacity limits will require new investment.
What to do next
- Put revenue growth, expense growth and margin change side by side for the last eight quarters.
- Break expense growth into labor, supplies and other categories.
- Compare revenue per case with cost per case by service line.
- Check whether growth is pushing against capacity.
Optional · interactive example
See it in an interactive example.
Hospital Financial Investigator: a working dashboard, scenario simulator, evidence-linked answers from APIS, and a sample executive brief, all on synthetic data.
The experience below is a working model of the investigation described above. It is built on the synthetic hospital, so you can explore freely. Three things to try:
- Find the driver. On the Dashboard, compare FY26 with FY25 and click the largest bar in the expense chart. Then open a quarter by clicking a point on the trend line.
- Ask APIS. Ask which expense categories explain the change, then click the evidence under the answer to open the underlying figures.
- Test a decision. In the Scenario tab, raise volume by 5% and watch what happens to the margin. Then change the labor rate and compare the two.
Explore Your Hospital’s Opportunities
Two Pillars can help hospital leadership investigate market, financial, operational and strategic questions using relevant organizational data, public information and a structured assessment process. A good first step is a short financial performance review that places revenue, expense, volume and margin side by side and shows where the pressure actually sits.
Sources
- Flex Monitoring Team, Briefing Paper No. 7: Financial Indicators for Critical Access Hospitals (May 2005). Accessed October 2026.
- Medicare Payment Advisory Commission (MedPAC), Report to the Congress, March 2026, Chapter 3: Hospital inpatient and outpatient services. Accessed October 2026.
- American Hospital Association, The Cost of Caring: Challenges Facing America’s Hospitals in 2025. Accessed October 2026.
- Centers for Medicare & Medicaid Services, Acute Inpatient PPS. Accessed October 2026.
- Kaufman Hall (Vizient), National Hospital Flash Report: August 2026 Data (October 13, 2026). Accessed October 2026.
Sources checked October 2026. This guide is general information for healthcare leaders and is not legal, financial, clinical or compliance advice. Figures and rules are cited to the sources below and may have changed since they were accessed, so confirm anything you rely on against the current source. Two Pillars & Co is independent of the organizations cited. See our editorial policy.