Section 125 Plan in Indiana: The 2026 Employer Guide.

Before an Eli Lilly clinical operations specialist in Indianapolis takes home a dollar from her benefit elections, Indiana has already claimed 2.9 cents and Marion County has claimed 2.02 cents more from every dollar she pays post-tax. Indiana's county income tax is the quiet levy that never appears in salary negotiations, never gets mentioned in benefit plan reviews, and almost never factors into the §125 analyses that most Indiana employers commission. But it is real money: $600 per month in post-tax benefit elections costs an Indianapolis employee $2,871 per year in combined federal, Indiana state, Marion County, and FICA taxes that a §125 cafeteria plan eliminates entirely. The full benefit stack every Benecor §125 participant receives is in the table below.

Cummins engineer paycheck: Indiana's real cost in full

Consider a Cummins Inc. systems engineer working at the Columbus, Indiana global headquarters, earning $76,000 per year in Bartholomew County. Single. Electing $450 per month in employer-sponsored medical premiums and $150 per month in dental and vision coverage through a §125 plan. Total monthly election: $600. Biweekly election: $300. Bartholomew County charges a 1.0% county adjusted gross income tax (CAGIT) in addition to Indiana's 2.9% state income tax.

This Cummins engineer takes home $201.30 more every month ($2,415.60 more per year) on identical gross compensation. The biweekly savings per paycheck: federal income tax saved $66.00, Social Security saved $18.60, Medicare saved $4.35, Indiana state income tax saved $8.70, Bartholomew County income tax saved $3.00, totaling $100.65 per paycheck. On the employer side, the $300 biweekly election generates $596.70 per year in employer FICA recapture on this single employee. A 200-person Cummins support workforce in Columbus at similar election levels generates $119,340 per year in employer FICA recapture.

Now consider the same employee in Marion County, Indianapolis. Marion County's 2.02% CAGIT rate replaces Bartholomew County's 1.0%. The county income tax savings jump from $3.00 per biweekly paycheck to $6.06 per biweekly paycheck, adding $72.72 per year in additional take-home improvement. An Eli Lilly employee in Indianapolis at the same wage and election level takes home $215 per month more than a Cummins employee in Columbus, and $255 per month more than a Texas employee at the same wage (Texas has no state income tax, but also no §125 state savings to capture). Indiana's county income taxes make Indianapolis one of the highest-ROI §125 markets in the Midwest.

"We assumed our existing benefit broker had already captured all the available tax optimization. When Benecor showed us the Marion County layer stacked on top of Indiana state and FICA, we realized we had been leaving $38,000 a year in employer FICA recapture on the table and our employees had been losing $200 a month in take-home pay that should have been theirs. We went live in five weeks."

Indiana's county income taxes: the quiet savings layer

Indiana's 2.9% flat income tax for 2026

Indiana levies a flat 2.9% income tax on all Indiana adjusted gross income for 2026. The rate is part of a scheduled reduction enacted by the Indiana General Assembly under House Enrolled Act 1002 in 2022, which set a declining rate schedule from 3.23% through 2022 down to 2.9% by 2026. The flat structure means every pre-tax §125 dollar saves exactly 2.9 cents in Indiana state income tax regardless of the employee's income level, from an IU Health patient care tech earning $36,000 to an Eli Lilly senior director earning $210,000. Indiana's 2.9% rate, while lower than Illinois' 4.95% or Michigan's 4.25%, is meaningfully compounded by the county income tax layer that applies in nearly every Indiana county.

County income taxes: Marion, Allen, Lake, and more

Indiana's county income tax system is unusual among major employer states. All 92 Indiana counties levy a county income tax on residents, either through the county adjusted gross income tax (CAGIT) or the county option income tax (COIT) framework. These rates are set by each county council annually and apply to Indiana adjusted gross income, which traces directly to the federal definition that excludes §125 pre-tax elections. The result: every §125 pre-tax dollar an Indiana employee elects reduces not just federal and state income tax, but also the county income tax for that employee's county of residence.

Indiana's county income tax rates are not trivial numbers. A Marion County employee electing $600 per month pre-tax saves $145.44 per year in county income tax alone, on top of $417.60 per year in Indiana state income tax savings and $549.00 per year in FICA savings. The combined Indiana state and county savings exceed the §125 state-income-tax savings available to employees in states like Pennsylvania (3.07%) for employees in the highest-rate Indiana counties.

Three-layer §125 savings for every Indiana employee

Every Indiana employee, in every county, benefits from three layers of §125 savings: federal income tax, Indiana state income tax (2.9%), and their county income tax (ranging from 0.345% to well above 2% in major employer counties). Indiana does not have city income taxes separate from the county system, so every Indiana municipality uses the county income tax framework. This makes Indiana's §125 savings layer structure simpler to administer than Ohio (which has separate city income taxes collected by different municipal agencies) while still delivering a meaningful county savings layer on top of state and federal. Indiana's three-layer savings are stronger per dollar elected than Texas or Florida (which have no state income tax and thus only two layers: FICA and federal).

What Indiana employees actually get: the full benefit stack

Indiana's manufacturing, pharmaceutical, and healthcare workforces operate in demanding conditions. Cummins assembly workers in Columbus pull rotating shifts. IU Health nurses in Indianapolis manage patient loads that leave no time for scheduling routine care appointments. Eli Lilly researchers in the Lilly Corporate Center navigate demanding development timelines. The benefit stack in a Benecor §125 plan addresses the barriers Indiana workers actually face, delivered from the first paycheck pre-tax dollars fund it.

• $0 Virtual Urgent Care, 24/7: A licensed clinician accessible at any hour from any device. For a Subaru Indiana assembly worker in Lafayette finishing a swing shift at 11 p.m. or a Rolls-Royce engine technician in Indianapolis dealing with a late-night injury, in-network urgent care clinics may be closed. Virtual urgent care at zero cost means immediate clinical assessment, appropriate care, and faster return to work. Indiana manufacturing employers consistently report fewer next-day absent-from-shift instances after this benefit goes live.
• $0 Virtual Primary Care: Routine visits, prescription renewals, and chronic condition management at no cost. Indiana's manufacturing and agricultural workforce has above-average rates of hypertension, musculoskeletal conditions, and diabetes. Zero-cost primary care removes the cost barrier to managing those conditions before they become missed shifts or expensive ER visits.
• $0 Mental Health Counseling: Licensed therapists accessible virtually at any hour. Indiana's mental health care access challenges are particularly acute in smaller manufacturing communities like Columbus, Kokomo, and Richmond. For workers in these communities, virtual mental health counseling at zero cost is frequently the first mental health resource they have accessed that did not require either a long drive or a high co-pay.
• 800+ commonly prescribed medications at $0, fully covered: The generics and maintenance medications that Indiana's manufacturing and healthcare workforce uses for hypertension, diabetes, pain management, and respiratory conditions, at no out-of-pocket cost. This is consistently the highest-rated benefit in Indiana post-enrollment surveys across every Benecor implementation.
• $0 Message a Specialist: Asynchronous specialist consultation for second opinions, dermatology, and triage. Particularly valuable for employees in smaller Indiana communities with limited local specialist access in Bartholomew, Tipton, or Madison counties.
• Procedures at 57% savings, specialist visits at 35% off, lab tests at 60% off, imaging at 75% off: Consistent network discounts across Indiana's major health system markets including IU Health, Franciscan Health, Parkview Health, and Community Health Network.
• Dental and Vision: Preventive dental and vision coverage for the employee and their family.
• Family coverage with 350,000+ doctors nationwide: The employee's spouse and dependents covered across Indiana's full statewide provider network including Indianapolis, Fort Wayne, South Bend, Evansville, and all Indiana communities.

Indiana industries with the highest §125 ROI

Pharmaceuticals: Eli Lilly, Cook Medical, Elanco

Indiana is home to one of the most important pharmaceutical company headquarters in the world. Eli Lilly and Company, founded in Indianapolis in 1876, employs approximately 12,000 Indiana workers across the Lilly Corporate Center in Indianapolis and manufacturing facilities in Branchburg and Lebanon. Lilly's Indiana workforce spans a wide wage range from manufacturing associates at $42,000 to principal scientists and senior directors at $180,000+. Cook Medical, headquartered in Bloomington (Monroe County), employs approximately 3,500 Indiana workers in medical device manufacturing and R&D. Elanco Animal Health (Indianapolis, spun off from Eli Lilly in 2018) employs approximately 2,500 Indiana corporate and research workers.

For Indiana pharmaceutical employers, the §125 nondiscrimination test design matters because their workforces are bimodal: manufacturing line workers earning $40,000 to $60,000 alongside PhD scientists and directors earning $120,000 to $250,000. A properly designed §125 plan passes all three nondiscrimination tests (eligibility, contributions and benefits, and key employee concentration) for both cohorts simultaneously. Benecor designs plans for bimodal wage workforces in every Indiana pharmaceutical and life sciences engagement. A 300-person Eli Lilly Indiana operations team with average wages of $88,000 and average monthly elections of $620 generates $172,634 per year in employer FICA recapture.

Automotive: Subaru Indiana, Stellantis Kokomo, Allison Transmission

Indiana is the fourth-largest automotive manufacturing state in the United States. Subaru of Indiana Automotive (SIA) in Lafayette (Tippecanoe County) employs approximately 5,800 workers at annual wages ranging from $52,000 to $82,000, producing the Impreza, Legacy, Outback, and Ascent models. Stellantis operates major transmission and engine manufacturing plants in Kokomo (Howard and Tipton counties) employing over 10,000 workers, including the Kokomo Transmission Plant and the Tipton Transmission Plant. Allison Transmission, headquartered in Indianapolis, employs approximately 3,800 Indiana workers in automatic and hybrid transmissions for commercial vehicles.

Indiana's automotive sector carries wages and workforce sizes that generate substantial §125 ROI. A 400-person Subaru Lafayette workforce segment at average elections of $540 per month generates $199,584 per year in employer FICA recapture. Tippecanoe County's 0.5% CAGIT rate is among the lower county rates in Indiana, but the federal and state savings layers are unchanged. For Kokomo Stellantis employees in Howard County (1.9% CAGIT rate), the combined county and state savings at $600 monthly election levels reach $240+ per month per employee. Compare Ohio's automotive §125 story→ for the next-state perspective from the Midwest manufacturing corridor.

Healthcare: IU Health, Franciscan Health, Parkview

IU Health (Indiana University Health) is Indiana's largest health system, employing approximately 35,000 people across Indianapolis, Bloomington, Fort Wayne, and regional hospitals statewide. Franciscan Health (Mishawaka and Indianapolis) employs over 13,000 Indiana healthcare workers. Parkview Health (Fort Wayne, Allen County) employs approximately 11,000 people in Northeast Indiana. Community Health Network (Indianapolis) adds another 16,000. Together, Indiana's four largest health systems alone represent 75,000+ Indiana W-2 healthcare employees.

Indiana healthcare employers benefit from §125 across the full wage spectrum. An IU Health patient care tech in Marion County earning $36,000 and electing $400 per month pre-tax saves approximately $168 per month in combined federal, Indiana state, and Marion County income tax savings plus FICA. The Marion County 2.02% county income tax layer adds $96.96 per year in additional take-home improvement compared to a healthcare worker in Tippecanoe County at the same wage. For a 600-person IU Health nursing and clinical staff segment at average elections of $510 per month, the annual employer FICA recapture exceeds $283,338 per year.

Industrial and defense: Cummins, Rolls-Royce, Steel Dynamics

Cummins Inc., headquartered in Columbus, Indiana, is one of the world's largest manufacturers of diesel and natural gas engines, power generation products, and filtration systems. Cummins employs approximately 6,000 Indiana workers across its Columbus headquarters campus and regional facilities, at wages ranging from manufacturing technician to corporate executive. Rolls-Royce's North American defense manufacturing headquarters in Indianapolis employs approximately 3,000 workers producing power systems for military vessels and aircraft. Steel Dynamics, headquartered in Fort Wayne (Allen County), employs approximately 2,200 Indiana workers in steel production and processing at wages averaging $65,000 to $85,000.

Industrial employers in Indiana face the same workforce competition as every other state: skilled manufacturing workers have multiple employer options. A $200-per-month take-home improvement from §125 is frequently cited by Indiana manufacturing HR directors as the most impactful retention tool that did not require raising wages. A 150-person Rolls-Royce Indianapolis manufacturing segment at average elections of $560 per month generates $81,648 per year in employer FICA recapture. Review the full FICA recapture formula→ to model any Indiana workforce size and election level.

Indianapolis, Fort Wayne, Columbus: how Indiana's markets differ

Indianapolis: pharma, healthcare, and finance hub

Indianapolis is Indiana's largest city and the state capital, home to Eli Lilly, IU Health, Anthem/Elevance Health, Salesforce (Indiana operations center), Republic Airways, and the Indiana Pacers and Colts organizations. Marion County's 2.02% CAGIT rate is the highest in Indiana for a major employer county, making Indianapolis the state's highest combined §125 savings market. An Elevance Health (formerly Anthem) corporate employee in Indianapolis earning $85,000 and electing $620 per month pre-tax saves approximately $226 per month in combined federal, Indiana state, Marion County, and FICA savings. For Indianapolis employers, the §125 case writes itself: the county income tax layer alone delivers more annual savings than employers in Tippecanoe County receive from their entire county income tax savings stack.

Fort Wayne: the manufacturing and healthcare corridor

Fort Wayne is Indiana's second-largest city and the economic center of Northeast Indiana. Parkview Health, Lutheran Hospital, Steel Dynamics, North American Van Lines, and Vera Bradley are among the major Fort Wayne employers. Allen County's 1.48% CAGIT rate adds a meaningful county savings layer on top of Indiana's 2.9% state rate. A Parkview Health RN in Fort Wayne earning $62,000 and electing $520 per month pre-tax saves approximately $198 per month in combined savings. Fort Wayne's manufacturing sector, which includes Lincoln Financial Field, Dana Inc., and multiple automotive Tier 1 suppliers, carries wage levels that produce strong §125 employer FICA recapture. A 120-person Fort Wayne healthcare employer at average elections of $520 per month generates $57,254 per year in employer FICA recapture.

Columbus and Lafayette: Cummins and Subaru country

Columbus, Indiana (Bartholomew County, 1.0% CAGIT) is the unlikely architectural gem of the Midwest and the global headquarters of Cummins. The Cummins workforce in Columbus, spanning engine design, powertrain engineering, and operations, earns wages that generate strong three-layer §125 savings even at Bartholomew County's relatively modest 1.0% CAGIT rate. Lafayette (Tippecanoe County, 0.5% CAGIT) is the home of Subaru of Indiana Automotive and Purdue University. Subaru's manufacturing workforce represents a high-concentration §125 implementation opportunity: 5,800 employees, stable wages, and a workforce that enrolls at high participation rates when enrollment is communicated in both English and Spanish. Even at Tippecanoe County's lower 0.5% rate, the three-layer savings (federal + Indiana 2.9% + county 0.5%) for a Subaru assembly worker still exceed the two-layer savings (federal + FICA only) available in Texas.

Indiana compliance: IDOR, county income tax collectors, ERISA

Indiana Department of Revenue and §125 conformity

Indiana's Department of Revenue (IDOR) uses Indiana adjusted gross income, which begins with federal adjusted gross income, as the basis for Indiana taxable income. Pre-tax §125 elections reduce the federal Box 1 wage, which flows through to reduce Indiana state income tax withholding automatically when payroll deduction codes are properly classified. Indiana employers do not need to file separate IDOR notifications or obtain state-level approval to implement a §125 plan. The Indiana state withholding calculation is handled correctly by all major payroll systems, ADP, Paychex, Paylocity, Gusto, when the §125 deduction code is classified as a pre-tax benefit election.

Indiana employers should confirm that their payroll system correctly reduces Indiana state income tax withholding, not just federal income tax withholding, from the same §125 pre-tax deduction code. A deduction code that reduces federal withholding but is not configured to also reduce Indiana state withholding costs every participating employee 2.9 cents per pre-tax dollar. Benecor audits this configuration before every Indiana go-live.

County income tax: payroll configuration specifics

Indiana county income taxes are withheld by employers based on each employee's county of residence as of January 1 of the tax year, not the county of the employer's worksite. An Allen County resident who works in Marion County pays Allen County's income tax rate (1.48%), not Marion County's (2.02%). This means Indiana employers with employees distributed across multiple counties must maintain county-of-residence records and apply the correct county rate per employee to the §125 pre-tax deduction.

Most Indiana payroll systems support county-level withholding, but the §125 pre-tax deduction code must be configured to reduce county income tax withholding in addition to state and federal withholding. The county withholding reduction is not always automatic even when the state reduction is configured correctly. Benecor verifies county withholding configuration for every employee county in scope during the Week 4 configuration, running a test payroll to confirm that federal, state, and county tax withholding are all correctly reduced before the first live pre-tax payroll.

The non-compliant §125 market: what Indiana employers must know

Indiana employers evaluating §125 benefit providers should be aware that a significant portion of the market for §125 tax optimization services does not sell genuinely compliant plans. Vendors marketing "wellness benefit plans," "supplemental medical reimbursement arrangements," or "pre-tax benefit platforms" under names like simple reimbursement programs or supplemental insurance programs may be offering structures that do not meet the statutory definition of a qualified benefit under IRC §125. The IRS Office of Chief Counsel has issued guidance in 2023 specifically addressing employer arrangements that claim §125 pre-tax treatment for benefits that do not qualify under the statute. Employers who rely on these arrangements face severe consequences if audited.

The most common red flags in non-compliant §125 offerings:

• No written plan adoption agreement: IRC §125(d) requires a written cafeteria plan. A vendor who does not provide a formal, ERISA-compliant plan adoption agreement is not operating a §125 plan regardless of how they market it.
• No annual nondiscrimination testing: §125 plans must pass three nondiscrimination tests annually. A vendor who does not perform or document these tests annually is operating a non-compliant arrangement that exposes the employer to disallowance of all pre-tax treatment.
• The "qualified benefit" is not licensed insurance: A wellness membership, a cash reimbursement arrangement, or a supplemental payment structure that does not involve a licensed insurance product from a carrier licensed in Indiana is not a §125-qualified benefit. If the benefit does not transfer actuarial risk, it is not insurance and it is not §125-eligible.
• The administrator cannot cite the specific IRC section: A compliant §125 administrator can identify, by statute number and Treasury regulation citation, exactly why each benefit election qualifies as a §125 benefit. "It's pre-tax because we say so" is not a compliance answer.
• No ERISA counsel reviewed the plan: A plan adoption agreement that was not drafted or reviewed by independent ERISA counsel is an unvetted document that may not withstand IRS scrutiny.

The consequences of a failed IRS audit on a non-compliant arrangement are severe: all pre-tax deductions for every employee for every period the arrangement was active are recharacterized as taxable wages. The employer owes back FICA, back federal income tax withholding, and back Indiana state and county income tax withholding for every affected payroll, plus IRS penalties and interest. For Indiana employers with Marion County employees at the 2.02% county rate, the county income tax exposure compounds the total back-tax liability compared to employers in states without local income taxes.

Benecor operates on a different standard. Every §125 plan Benecor implements is built on a written plan adoption agreement and summary plan description drafted by independent ERISA counsel. Annual nondiscrimination testing is performed by credentialed benefits professionals. Benecor's compliance architecture has been reviewed by former senior IRS officials with direct employer benefit plan examination experience, and every Benecor plan structure is supported by leading CPA firms with IRS tax controversy and examination practices. When an Indiana employer asks what happens if they get audited, Benecor's answer is a complete documentation package: written plan, election records, payroll configuration audit trails, annual nondiscrimination test results, and ERISA filings. That is what compliance looks like. It is not what most of the non-compliant vendors in this market can produce.

ACA employer mandate in Indiana

Indiana employers with 50 or more full-time equivalent employees are subject to the ACA employer mandate and must offer minimum essential coverage at minimum value to full-time employees. Indiana has not established a state-level ACA exchange with additional employer reporting requirements beyond the federal standard. The §125 plan is fully compatible with ACA mandate compliance, pre-tax payroll deductions for ACA-compliant health coverage reduce employer FICA and employee taxable wages without ACA conflict. Indiana employers using Benecor's §125 structure do not face any additional state ACA compliance steps.

Launching a §125 plan in Indiana: 5 weeks

Indiana's §125 implementation timeline is five weeks from signed engagement to first pre-tax payroll. The county income tax mapping step, verifying each employee's county of residence and applying the correct CAGIT rate to the payroll configuration, adds three to five hours to Week 4 for employers with employees in multiple Indiana counties. For single-county employers, particularly Indianapolis (Marion County) employers, the configuration is straightforward.

1. Week 1: Benecor models your Indiana payroll through the multi-layer tax recapture analysis: federal FICA, Indiana 2.9% state income tax, and each employee's county CAGIT rate by county of residence. You receive a signed projection showing every layer separately. You select your benefit menu: medical, HSA, dependent care FSA, dental, vision, accident, and critical illness.
2. Week 2: ERISA counsel drafts the plan adoption agreement and summary plan description with correct Indiana wage and county income tax treatment. You review and sign both documents before the first pre-tax payroll.
3. Week 3: Employee education rollout. Digital enrollment packets, live Q&A sessions, and Spanish-language materials for Indianapolis, Fort Wayne, and South Bend employers with bilingual workforces. Indiana manufacturing employers see 72-86% enrollment participation within 48 hours of receiving the enrollment packet when the take-home math is presented clearly.
4. Week 4: Election data transmitted to payroll. Deduction codes configured for federal, Indiana state, and county income tax withholding reduction by employee county. County withholding treatment verified per county. Test payroll run confirms all three layers are correctly reduced before go-live.
5. Week 5: First pre-tax payroll. Federal income tax savings, Indiana state savings, county income tax savings, and FICA savings appear on the same paycheck for both employer and employee.