New Federal Incentive Lowers the Estimated Cost of Medicaid Expansion

10 Min Read

Apr 25, 2022


Phillip Steiner, M.A.,

Kari M. Bruffett

Key Points

    • An estimated 87,780 uninsured Kansans (about the combined populations of Salina and Hutchinson) who could be eligible for Medicaid if expanded under the terms of the Affordable Care Act (ACA) are currently in the so-called “Medicaid coverage gap” — they make too much to qualify for Medicaid and too little to qualify for subsidized coverage on the ACA health insurance marketplace.
    • Using data from before the COVID-19 pandemic, a total of 148,049 Kansans, including 108,800 adults and 39,249 children, are estimated to newly enroll in KanCare if Medicaid were to be expanded in January 2023.
    • Estimated new enrollment represents an increase of approximately 36.0 percent from the average monthly KanCare enrollment pre-pandemic. However, net state KanCare spending is projected to be just 1.4 percent higher (0.14 percent higher per year on average) over a 10-year period compared to projections based on the pre-pandemic trend.
    • The American Rescue Plan Act of 2021 would provide an estimated $418 million in savings to Kansas over two years if Medicaid were expanded to low-income adults under the terms of the ACA.
    • This estimate differs from state fiscal notes and some other estimates because it includes the indirect effect of expansion on enrollment of children and currently eligible adults.


An estimated 87,780 uninsured Kansans who could be eligible for Medicaid if expanded under the terms of the Affordable Care Act (ACA) currently make too much to qualify for Medicaid and too little to qualify for subsidized coverage on the ACA health insurance marketplace, falling into the so-called “Medicaid coverage gap.” Medicaid expansion would allow these uninsured Kansans to enroll in KanCare, the state program that provides Medicaid coverage. A new federal incentive has changed the financial equation for states that newly expand Medicaid coverage, but it is unclear whether this financial incentive will change the policy preferences of a majority of Kansas lawmakers.

This issue brief provides an updated estimate of the impact that expanding Medicaid coverage would have on KanCare enrollment and expenditures using the best available data on population, costs and savings. Expanding KanCare to all adults age 19-64 with family income at or below 138 percent of the federal poverty level (FPL, $38,295 per year for a family of four in 2022) has been a perennial issue for the Kansas Legislature since the U.S. Supreme Court made Medicaid expansion optional for states in 2012. Currently, Kansas adults are eligible for Medicaid if they are age 65 or older, blind or have a disability and meet income and resource requirements, or if they are a parent or guardian with family income below 38 percent FPL ($10,545 per year for a family of four in 2022).

In February 2022, Governor Laura Kelly and expansion supporters in the Legislature introduced new legislation, House Bill (HB) 2675 and Senate Bill (SB) 472, to expand KanCare effective January 1, 2023. Unlike expansion legislation introduced in 2021, which paired expansion with revenue from the legalization of medical cannabis, the 2022 bills are focused on expansion alone and hope to capitalize on a new federal incentive created by the American Rescue Plan Act of 2021 (ARPA), which would provide savings to the state that are similar to the initial incentive offered in the first six years of the ACA but would provide those savings over two years. In announcing HB 2675 and SB 472, the Governor noted that the state estimates net savings to the state general fund in the first fiscal year, which she proposed reallocating for a one-time investment in housing, child care and workforce development programs.

Federal Medicaid Expansion Financial Incentive

ARPA provides states that newly expand their Medicaid programs a five percentage point increase in the Federal Medical Assistance Percentage (FMAP) applied to spending on most currently eligible Medicaid enrollees for two years (eight quarters) after expansion. Adults newly eligible because of expansion would receive the standard 90 percent FMAP for expansion enrollees. In Kansas, the federal share of spending would effectively increase from 60 cents to 65 cents of each dollar spent on KanCare members currently enrolled in the qualifying groups. The KanCare program spends around $4 billion a year on benefits for those who would qualify for the increased FMAP resulting in about $200 million per year in savings if Medicaid were expanded.

Enrollment in Medicaid and the Children’s Health Insurance Program (CHIP) in Kansas has increased 21 percent during the pandemic due to changes in the economy and administrative policies adopted to prevent beneficiaries from being disenrolled. Those policies were required by the Families First Coronavirus Response Act as a condition for states to obtain a temporary 6.2 percentage point increase in the FMAP during the federal COVID-19 public health emergency (PHE). Barring new federal legislation, the 6.2 percentage point increase in the FMAP will last through the end of the quarter in which the federal PHE ends (the current declaration expires July 15, 2022).

This estimate assumes all beneficiaries who would no longer be eligible after the PHE ends would be disenrolled before January 1, 2023. After adjusting for spending and enrollment trends before the PHE, the ARPA incentive was estimated to be $205 million in 2023 and $213 million in 2024. The cost of expansion would be lower if the PHE were still in effect.

While other policy changes that ultimately were adopted during the 2022 legislative session — such as extending Medicaid benefits for pregnant women to one year post-partum — may impact the number of new enrollees and cost, the end of the 6.2 percentage point increase is the only policy change other than Medicaid expansion assumed in this estimate.

Enrollment Estimate

As in previous KHI estimates, the estimate in this brief represents all those who are expected to enroll if Medicaid is expanded. This assessment differs from other estimates of Medicaid expansion enrollment, including state fiscal notes, because it includes potential indirect effects of expansion, such as currently eligible children and adults who might newly enroll in an expanded Medicaid program.


The estimate of 148,049 additional enrollees includes 108,800 adults and 39,249 children. Of the 108,800 new adult enrollees (Figure 1), 64,957 are newly eligible adults who are currently uninsured, 1,904 are adults who are currently eligible but uninsured, and 41,939 are adults who might switch to KanCare from another insurance source.

This brief also considers that some adults already enrolled in KanCare could shift to the expansion group, which is estimated to reduce state costs as discussed in the next section. Approximately 7,696 current KanCare members who might otherwise have enrolled in pre-expansion eligibility categories could instead become eligible in the new expansion group. That effect would increase the adult enrollment in the expansion group but not the total enrollment, so the group is not included among the 108,800 estimated “new” adult enrollees.

Expanding Medicaid would not change the eligibility levels for children, but it is assumed that more currently eligible children who are not enrolled would enroll in KanCare as outreach efforts following expansion reached more people, particularly if their parents were to newly enroll.

Chart on Projected Kansas Adults in Medicaid Expansion

The estimate of 39,249 newly enrolled children (Figure 2) includes 16,495 currently uninsured children and 22,754 children who might switch to KanCare from other coverage.


This estimate assumes expansion would be implemented on January 1, 2023. The estimated net cost to the state includes new revenues, savings from adults who would enroll in the new expansion group (with a federal match rate of 90 percent) rather than another eligibility group with a less favorable match rate (regular match rate of 60 percent), and additional administrative costs from new enrollment. The resulting estimated costs are presented in Figure 3.

Estimated new annual revenues associated with new KanCare enrollees include managed care privilege fees, increased drug rebates collected by the state, and additional CHIP premiums collected. The estimated savings each year from expansion are associated primarily with enrollees becoming reclassified into different eligibility groups, such as women who would become pregnant while already enrolled in the expansion group as well as those moving to the expansion group who would have qualified as Medically Needy, who would have enrolled in the entirely state-funded MediKan program or who may otherwise have been eligible through Supplemental Security Income. State savings also are estimated to account for inmates who could be eligible for Medicaid in the case of a hospital admission longer than one day.

Figure 2 projected kansas children
Figure 3 estimated direct

The estimated state net costs do not include the projected effects on the workforce or the overall state economy. A February 2021 analysis by John Leatherman, a professor in the Department of Agricultural Economics at Kansas State University, suggested that expanding Medicaid would increase economic output, thus generating each year additional state tax revenue of between 3.1 percent and 3.9 percent and local tax revenue of between 2.3 percent and 2.9 percent of the federal cost of new enrollees. This cost estimate does not assume the state would reduce funding for other programs that currently provide services for uninsured Kansans, including safety net clinics and community mental health centers.


Because data collection issues during the pandemic made 2020 data not comparable to previous years, this analysis uses data from the U.S. Census Bureau’s 2019 American Community Survey (ACS) as the basis for the population estimates. Additional information from IPUMS USA was incorporated to more closely reflect the KanCare program’s family definitions and eligibility requirements based on immigration status. Policies implemented in response to the COVID-19 pandemic also resulted in a significant increase in Medicaid enrollment and spending in 2020 and 2021. Thus, this estimate does not use fiscal year 2021 as the basis for all cost and savings projections; instead, the fiscal year that most closely reflects expectations for cost and savings after the PHE ends was used. The details of each assumption are provided in a technical supplement.


The American Rescue Plan Act of 2021 created an estimated $418 million financial incentive for Kansas to expand Medicaid to low-income adults under the terms of the Affordable Care Act. It remains to be seen if that incentive will persuade Kansas or the 11 other states that have not yet expanded Medicaid to do so. None of the non-expansion states have adopted expansion since ARPA was enacted (Missouri and Oklahoma implemented expansion in 2021 but had adopted expansion in 2020). In the meantime, Kansans who remain in the coverage gap have few alternatives for comprehensive affordable health insurance.

Access additional publications in the Documents & Downloads section.

About Kansas Health Institute

The Kansas Health Institute supports effective policymaking through nonpartisan research, education and engagement. KHI believes evidence-based information, objective analysis and civil dialogue enable policy leaders to be champions for a healthier Kansas. Established in 1995 with a multiyear grant from the Kansas Health Foundation, KHI is a nonprofit, nonpartisan educational organization based in Topeka.

Learn More About KHI