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Ameren Retirees Face ACA Premium Shock—Here’s How Others Are Responding

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'Ameren employees approaching retirement should recognize that proactive income and health care planning can make the difference between preserving subsidy eligibility and facing sharply higher ACA premiums.' – Paul Bergeron, a representative of The Retirement Group, a division of Wealth Enhancement.

'Ameren employees planning their retirement should consider how income levels influence ACA subsidies, as even small adjustments in taxable withdrawals can affect future health care affordability.' – Tyson Mavar, a representative of The Retirement Group, a division of Wealth Enhancement.

In this article, we will discuss:

How the expiration of enhanced ACA subsidies after 2025 could impact health care costs for retirees and early retirees.
Real-life case studies illustrating how different individuals are adjusting to rising ACA premiums.
Practical steps Ameren professionals can take before enrolling in 2026 Marketplace plans.

by Brent Wolf, CFP®, Wealth Enhancement

As open enrollment for 2026 Marketplace plans begins, many households are seeing dramatic shifts in their renewal letters. Rising base premiums and the possible end of enhanced subsidies after 2025 could mean significantly higher out-of-pocket costs for anyone purchasing coverage through the Affordable Care Act (ACA) exchange.

The Kaiser Family Foundation (KFF) estimates that if Congress does not extend enhanced premium tax credits, average net premium payments could more than double in 2026. ¹

“It feels like a second mortgage to pay this premium.”

Profile: A couple in their early 60s who retired a few years before becoming Medicare-eligible.

What changed: Their ACA premium had been manageable due to increased subsidies. Their renewal now indicates a rise of about $1,000 to $1,200 monthly if enhanced credits expire.

Decision pressure: They faced hard choices—drawing more taxable income from IRAs, going without coverage, or returning to the workforce for employer-based insurance.

Our response: We reworked their income plan to align with the ACA’s income-based subsidy structure. By controlling their Modified Adjusted Gross Income (MAGI) through smaller IRA withdrawals, use of cash reserves, and partial Roth conversions, we kept them eligible for key subsidies. Comparing a Bronze high-deductible plan with a health savings account (HSA) to a Silver plan revealed the Silver plan—thanks to cost-sharing reductions—was more economical given their expected medical treatments.

“I can’t risk losing coverage while battling an illness.”

Profile: A single client in her early 60s undergoing ongoing medical treatment.

What changed: Without enhanced subsidies, her premiums nearly tripled.

Decision pressure: Balancing affordability with the need to keep her care team and prescriptions consistent.

Our response: We prioritized staying with her provider network and controlling her out-of-pocket costs. A dedicated “medical reserve” fund—equal to one year’s maximum out-of-pocket limit—gave her a cushion without liquidating investments during market declines. We also worked with her physicians to identify lower-cost prescriptions through her plan’s formulary.

“The new premiums are hurting our business margins.”

Profile: A self-employed couple—one partner managing asthma and the other a cardiac rhythm condition.

What changed: Without subsidies, their net premiums are expected to rise sharply.

Decision pressure: Continue paying high premiums, choose a plan with a very high deductible, or seek W-2 employment for benefits.

Our response: We compared total annual costs for a Silver plan versus a Bronze option, factoring in frequent specialist visits and prescriptions. Once total medical costs were considered, the Silver plan proved more cost-effective. We also aligned their life and disability coverage and tailored their tax approach to reflect potential changes in premium tax credits.

“I’m young and healthy—do I even need full coverage?”

Profile: An independent contractor in their 20s with minimal expected medical use.

What changed: Premiums for mid- and high-tier plans nearly quadrupled.

Decision pressure: Choosing between a high-deductible Bronze HSA plan and catastrophic coverage.

Our response: We modeled three options—a Bronze HSA-eligible plan, a mid-tier plan, and catastrophic coverage. The Bronze HSA option offered the best mix of lower premiums and long-term tax benefits. Monthly automated HSA contributions build a future medical fund that can later be used for qualified health care expenses or Medicare premiums (excluding Medigap) after age 65.

Five Steps to Take Before You Enroll

1. Evaluate your total annual cost, not just the premium. Factor in deductibles, copays, and the possibility of reaching your out-of-pocket maximum.

2. Manage your MAGI carefully. ACA subsidies depend on income. Coordinate Roth conversions, capital gains, and IRA withdrawals strategically.

3. Verify your doctor and prescription coverage. Always confirm your plan’s provider network and formulary before enrolling.

4. Maintain a medical reserve fund. Hold six to 12 months of premiums plus a portion of your maximum out-of-pocket in cash or short-term Treasuries.

5. Finalize your plan by December 15. Open Enrollment for 2026 coverage ends on December 15, with plans effective January 1.

If Affordability Is a Concern

Choosing to go without insurance can expose you to serious financial strain in case of illness or accident. Consider the most affordable Bronze plan that still meets ACA minimum coverage requirements. If your income decreases during the year, you may become eligible for Medicaid or CHIP and qualify for a Special Enrollment Period. ²

How The Retirement Group Supports Ameren Professionals

For Ameren employees approaching or already in retirement, the intersection of rising health care costs and income planning can be complex. The Retirement Group focuses on helping clients navigate ACA subsidy rules, tax-efficient withdrawal strategies, and health care cost planning during retirement transitions.

To speak with an advisor about aligning your retirement income and health care planning, call (800) 900-5867 today.

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Sources:

1. Cox, Cynthia, et al. “ACA Marketplace Premium Payments Would More Than Double on Average Next Year if Enhanced Premium Tax Credits Expire.” Kaiser Family Foundation (KFF) , 2025, pp. n.p., https://www.kff.org/affordable-care-act/aca-marketplace-premium-payments-would-more-than-double-on-average-next-year-if-enhanced-premium-tax-credits-expire/ .
2. Centers for Medicare & Medicaid Services. ' Understanding Special Enrollment Periods. ' June 2025.
Other resources:
1. “When Can You Get Health Insurance? | Dates & Deadlines.” HealthCare.gov , U.S. Centers for Medicare & Medicaid Services, n.d., https://www.healthcare.gov/quick-guide/dates-and-deadlines/ .
2. Publication 969: Health Savings Accounts and Other Tax-Favoured Health Plans. Internal Revenue Service, 2024, pp. 8–9, https://www.irs.gov/pub/irs-pdf/p969.pdf .
3. “Silver vs. Bronze Plan Selection: Cost-Comparison Scenarios.” Centers for Medicare & Medicaid Services (CMS) , 23 Dec. 2024, pp. 1–3, https://www.cms.gov/files/document/silver-vs-bronze-cost-comparison-scenario-resource.pdf .
4. Murphy, Tom. “Expect Health Insurance Prices to Rise Next Year, Brokers Say.” AP News , Associated Press, 24 Aug. 2025, https://apnews.com/article/health-insurance-drug-costs-2026-rates-c4d865ec09c7088ecc6b55dc520f3566 .

How does the Ameren retirement plan design ensure that employees' benefits under the Union Cash Balance Plan grow over time, and what specific features contribute to this growth? Discuss how amortization methodologies and interest credits are determined for Ameren employees, particularly in relation to age and years of service.

Growth of Benefits: Ameren’s Union Cash Balance Plan ensures growth through annual interest credits and regular credits based on the employee’s age and pensionable earnings. Interest credits are applied at a rate of 5%, subject to change yearly based on Treasury rates plus an additional 1%. Employees also receive regular credits that increase with age, ranging from 3% to 8% of pensionable earnings(Ameren_Corporation_Sept…).

In what ways can employees of Ameren leverage the various payment methods available to them upon retirement? Elaborate on how the choice between lump-sum payments and annuities impacts their financial planning post-retirement.

Payment Methods: Ameren offers employees flexibility in receiving benefits as a lump sum or annuity. Lump sum payments provide immediate access to all benefits, which can be rolled over into other retirement accounts, while annuities provide steady income for life. Choosing between these affects financial planning by balancing immediate liquidity versus long-term income security(Ameren_Corporation_Sept…).

What are the implications of leaving Ameren before reaching retirement age, particularly in regard to vesting and benefit access? Discuss the conditions that affect an employee's eligibility and the importance of completing the required years of service.

Leaving Before Retirement: If an employee leaves Ameren before reaching retirement age but has completed three years of service, they are vested and entitled to their full cash balance account. If an employee leaves before vesting, their account is forfeited. Completing the required years of service is critical for retaining benefits(Ameren_Corporation_Sept…).

How does the Ameren Corporation balance contributions to the retirement plan with the need to comply with IRS regulations, specifically with the aim of avoiding a "top heavy" classification? Analyze how this impacts employee benefits and the strategies used by Ameren to ensure compliance.

Compliance with IRS Regulations: Ameren ensures compliance with IRS “top heavy” rules by monitoring the allocation of contributions to avoid excessive benefits going to key employees. If more than 60% of benefits are allocated to key employees, Ameren must provide minimum benefits to non-key employees, impacting overall contributions and plan design(Ameren_Corporation_Sept…)(Ameren_Corporation_Sept…).

What are the survivor benefits options available under Ameren's Union Cash Balance Plan, and how are these benefits calculated for spouses and non-spouse beneficiaries? Provide details on how varying age differences between an employee and their beneficiary affect these calculations.

Survivor Benefits: Under the Union Cash Balance Plan, a spouse beneficiary receives survivor benefits either as a lump sum or lifetime annuity. Non-spouse beneficiaries receive a lump sum. The calculation of survivor benefits adjusts based on the age difference between the employee and the beneficiary(Ameren_Corporation_Sept…).

How do the changes in IRS limits for retirement accounts in 2024 potentially affect employees of Ameren when planning for retirement? Discuss the strategic considerations Ameren employees should take into account in relation to contribution limits and catch-up provisions.

IRS Limits and 2024 Changes: Changes to IRS contribution limits in 2024 may affect employees by altering the maximum they can contribute to retirement accounts, including catch-up provisions for those over 50. Ameren employees should monitor these changes to maximize their retirement savings strategies(Ameren_Corporation_Sept…).

In what ways does the Ameren Corporation's retirement plan administration ensure transparency and participant rights, particularly under ERISA? Explore the various rights employees have regarding access to plan documents and the recourse available in the event of a benefit claim denial.

ERISA Rights and Transparency: Ameren ensures transparency and adherence to ERISA, giving employees the right to access plan documents, including the SPD and financial reports. In case of benefit claim denials, employees can appeal and, if necessary, pursue legal action(Ameren_Corporation_Sept…).

How can Ameren employees contact the company to learn more about their retirement benefits and navigate the complexities of the Union Cash Balance Plan? Discuss the available resources and support channels for employees to gain clarity on their benefits.

Contact for Plan Information: Ameren employees can contact the company through its pension benefits line at 877.7my.Ameren for details on retirement benefits and support with navigating the Union Cash Balance Plan. Online resources like myAmeren Pension Benefits also provide account information and assistance(Ameren_Corporation_Sept…).

What specific factors influence the calculation of interest credits in the Union Cash Balance Plan, and how do these credits affect the overall retirement savings of Ameren employees? Analyze the importance of understanding these factors in relation to future financial security.

Interest Credits: Interest credits are determined based on a fixed rate (5%) or the sum of Treasury Constant Maturity rates plus an additional percentage, ensuring steady account growth. Understanding how these credits accumulate is essential for predicting future retirement savings(Ameren_Corporation_Sept…).

How does the flexibility provided in the Ameren retirement plan enhance employee satisfaction and encourage long-term retention? Discuss the impact of features such as portability of benefits and options for account growth on employee engagement.

Flexibility and Retention: The portability of benefits and the ability to choose between lump sum or annuity payments enhances employee satisfaction and retention. Employees can take their vested account balance if they leave Ameren, encouraging long-term engagement(Ameren_Corporation_Sept…).

With the current political climate we are in it is important to keep up with current news and remain knowledgeable about your benefits.

News: Ameren has announced a major restructuring plan involving the reduction of its workforce by 5% and a review of its pension benefits structure. The company is also implementing changes to its 401(k) plan, including reducing matching contributions to align with cost-saving measures.
Importance: Addressing this news is crucial due to the current economic uncertainty, which affects investment decisions and tax planning. The reduction in benefits and pensions could impact employees' retirement planning and financial stability, making it essential to stay informed about these changes. Additionally, the restructuring may influence Ameren's stock performance and investor sentiment in the broader market.

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For more information you can reach the plan administrator for Ameren at 1901 Chouteau Avenue St. Louis, MO 63103; or by calling them at (800) 755-5000.