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Are Ghost Taxes Creeping Into Your Oneok Retirement Plan?

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'Many Oneok employees underestimate how much “ghost taxes” can erode retirement income. Understanding these hidden thresholds today can help you make more thoughtful decisions for tomorrow’s financial well-being,' — Michael Corgiat, a representative of The Retirement Group, a division of Wealth Enhancement.

'Many Oneok employees are surprised by how quickly hidden taxes like AMT, NIIT, and IRMAA can reduce retirement income, making it important for retirees to stay informed and thoughtfully plan so these costs don’t catch them off guard.' — Brent Wolf, a representative of The Retirement Group, a division of Wealth Enhancement.

In this article, we will discuss:

The five “ghost taxes” that may unexpectedly impact retirement income.
How these taxes can affect Oneok employees and retirees.
Strategies to better understand and prepare for these tax implications.

How Oneok Employees Can Prepare for the Five “Ghost Taxes” That Could Haunt Retirement

There are several lesser-known surcharges and thresholds that may unexpectedly increase your tax bill in retirement, even if you already understand federal, state, and local tax obligations. These include the Alternative Minimum Tax (AMT), the Net Investment Income Tax (NIIT), the Medicare Income-Related Monthly Adjustment Amount (IRMAA), the Social Security “tax torpedo,” and the new senior deduction. Because many of these thresholds are not adjusted for inflation, they increasingly impact retirees, including those from Oneok.

1. AMT: Alternative Minimum Tax

The AMT is a parallel tax system designed to make sure higher-income individuals pay at least a minimum amount of taxes. It has its own tax brackets, forms, and rules, with a top rate of 28%. ¹ Some deductions available under the traditional tax system are limited under AMT rules.

For 2025, the AMT exemptions are:

- $88,100 for single filers (phasing out at $626,350)
- $137,000 for married couples filing jointly (phasing out at $1,252,700)

High income, exercising incentive stock options, large capital gains, or numerous itemized deductions may trigger AMT. Even though long-term capital gains receive preferential tax treatment, they can still reduce your AMT exemption. If AMT is paid in one year, a tax credit may be available in future years when AMT is not owed.

2. NIIT: Net Investment Income Tax

The NIIT applies a 3.8% tax on net investment income when modified adjusted gross income (MAGI) exceeds:

- $200,000 for single filers
- $250,000 for married couples filing jointly ²

This tax applies to dividends, interest, rental income, gains from home sales, and capital gains beyond exclusion limits. Withdrawals from 401(k)s and traditional IRAs are not directly taxed by NIIT, but they may increase MAGI and cause other investment income to be taxed.

Strategies to limit exposure include contributing to traditional retirement accounts, using health savings accounts (HSAs), and tax-loss harvesting. For instance, tax-loss harvesting allows you to use up to $3,000 in capital losses annually to offset ordinary income. ³

For individuals age 70½ or older looking to reduce MAGI, qualified charitable distributions (QCDs) may help. QCDs allow you to donate to qualified charities on a tax-free basis directly from your IRA, satisfying required minimum distribution (RMD) rules without bringing distributions into income. In 2025, up to $108,000 may be donated tax-free. ⁴

3. IRMAA: Income-Related Monthly Adjustment Amount

IRMAA adds a surcharge to Medicare Parts B and D premiums for higher-income retirees and is based on MAGI from two years prior.

For 2025, IRMAA applies when MAGI exceeds:

- $106,000 for single filers
- $212,000 for married couples filing jointly

Even a small increase above these limits can place retirees in a higher premium bracket. Tax-exempt interest from municipal bonds is included in MAGI for IRMAA purposes. Premiums and IRMAA can be deducted from Social Security payments or paid directly. Social Security allows individuals experiencing major life changes, such as retirement or death of a spouse, to request revised IRMAA calculations.

4. The Social Security “Tax Torpedo”

Social Security benefits may be taxable depending on “provisional income,” which includes:

- Adjusted gross income
- Non-taxable interest
- One-half of Social Security benefits

If provisional income exceeds:

- $34,000 for single filers
- $44,000 for married couples filing jointly

...then up to 85% of Social Security benefits may be taxable. ⁵

Delaying Social Security up to age 70 increases benefits by 8% per year beyond full retirement age.

5. The 2025–2028 New Senior Deduction

From 2025 to 2028, individuals age 65 and older may qualify for a new senior deduction:

- $6,000 for single filers
- $12,000 for married couples filing jointly

This deduction phases out at:

- $75,000 MAGI for single filers
- $150,000 MAGI for joint filers

This is separate from the standard senior deduction, which currently adds $2,000 for individuals or $3,200 for married couples age 65 or older.

Need Help Navigating These Taxes?

Understanding how AMT, NIIT, IRMAA, Social Security rules, and senior deductions affect retirement income can be complex, especially for Oneok retirees managing pensions, 401(k)s, and other investments. The Retirement Group can help you better understand how these tax considerations relate to your retirement planning. Call (800) 900-5867 for guidance.

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Articles you may find interesting:

Sources:

1. Tax Foundation. “ 2026 Tax Brackets .” 9 Oct. 2025.

2. Gravelle, Jane G., and Don J. Marples. The 3.8% Net Investment Income Tax: Overview, Data, and Policy Options . Congressional Research Service, 30 June 2023, crsreports.congress.gov/product/pdf/R/R41413.

3. IRS. ' Topic no. 409, Capital gains and losses .' 12 Sep. 2025.

4. Wealth Enhancement. ' 7 Tax Moves to Consider Before The End of The Year ,' by Mary Taliaferro, CFP. Nov. 5, 2025.

5. Investopedia. ' Provisional Taxes: What They Are and How They Work ,' by Julia Kagan. 4 Sep. 2025.

What specific factors does ONEOK, Inc. consider when determining an employee's eligibility for retirement benefits, and how do these factors align with commonly understood retirement planning principles in the context of the ONEOK, Inc. Retirement Plan?

Eligibility Factors: ONEOK, Inc. considers several factors when determining eligibility for its retirement plan, such as date of hire, age, and participation in certain programs like the Profit Sharing Plan. Employees must have been hired before January 1, 2005, and must meet the minimum age of 21 to be eligible(ONEOK_Inc_Retirement_Pl…). These factors align with common retirement planning principles, such as ensuring long-term employment and participation in benefit programs.

How does the structure of the ONEOK, Inc. Retirement Plan impact the financial planning strategies of employees who are nearing retirement age, particularly in relation to their final average earnings and years of credited service?

Plan Structure and Financial Planning: The ONEOK Retirement Plan uses a formula based on Final Average Earnings and Years of Credited Service. This structure impacts employees' financial planning, as it encourages maximizing years of service and optimizing earnings in the final years before retirement(ONEOK_Inc_Retirement_Pl…). Employees nearing retirement should focus on maximizing both variables for a stronger financial outcome.

In what ways can changes to the IRS limits in 2024 affect the retirement planning of employees participating in the ONEOK, Inc. Retirement Plan, and how can they adapt their strategies to accommodate these changes?

IRS Limits and Impact on Planning: Changes to IRS limits, such as increases in contribution caps or income thresholds, could affect employees’ ability to defer taxes and maximize savings(ONEOK_Inc_Retirement_Pl…). Employees can adapt by adjusting their contributions to their 401(k) or other retirement accounts in line with new limits, ensuring they stay within allowable tax advantages.

For employees considering early retirement, what are the implications of selecting this option under the ONEOK, Inc. Retirement Plan compared to waiting for normal retirement benefits, and what should they consider regarding potential reductions in benefits?

Early Retirement vs. Normal Retirement: Opting for early retirement under the ONEOK Plan can lead to a reduction in benefits, as payments are reduced based on the Early Retirement Benefit Reduction Schedule(ONEOK_Inc_Retirement_Pl…). Employees should consider their financial needs and health before making this decision, as waiting until normal retirement age results in higher monthly benefits.

How does the process for applying for retirement benefits at ONEOK, Inc. work, and what specific documentation and timelines should employees be prepared to navigate in order to ensure a smooth transition into retirement?

Retirement Application Process: Employees must request a retirement estimate online or through HR, and submit retirement forms and documentation to initiate benefits(ONEOK_Inc_Retirement_Pl…). Timely submission is key to ensure a smooth transition, and benefits usually begin the first of the month after retirement.

What options are available to employees of ONEOK, Inc. if they wish to change their designated beneficiaries in the retirement plan, and how can they ensure that these changes are executed properly?

Changing Beneficiaries: Employees can change their designated beneficiaries by submitting a pre-retirement death beneficiary form(ONEOK_Inc_Retirement_Pl…). Spousal consent is required for changes that involve someone other than the spouse, and notarization is needed to ensure proper execution.

How does ONEOK, Inc. manage the investment of its retirement plan assets, and what guidelines are in place to ensure that participants' funds are invested prudently and in alignment with their retirement goals?

Investment Management: ONEOK manages its retirement plan assets in a trust, with investments overseen by plan fiduciaries following an investment policy(ONEOK_Inc_Retirement_Pl…). This policy ensures that funds are invested prudently, balancing risk and returns in alignment with participants' retirement goals.

In terms of employee rights under ERISA, what recourse do employees of ONEOK, Inc. have if they believe their benefits are being mismanaged or if they encounter issues when filing claims related to their retirement benefits?

ERISA Rights and Recourse: Employees have rights under ERISA, including the ability to file claims and appeals if they believe their benefits are being mismanaged(ONEOK_Inc_Retirement_Pl…). If claims are denied, they can appeal and ultimately take legal action under Section 502(a) of ERISA if necessary.

What procedures does ONEOK, Inc. have in place for communicating changes to the retirement plan, and how can employees stay informed about updates that may affect their benefits or retirement planning?

Plan Updates and Communication: ONEOK communicates changes to its retirement plan through electronic and physical notices(ONEOK_Inc_Retirement_Pl…). Employees are encouraged to stay updated by regularly reviewing these communications and contacting HR if they need clarification.

How can employees of ONEOK, Inc. reach out for additional information regarding the retirement plan, and what are the best practices for utilizing the resources available for retirement planning assistance?

Accessing Retirement Information: Employees can contact ONEOK HR Solutions or access the Employee Self-Service platform for detailed information about their retirement plan(ONEOK_Inc_Retirement_Pl…). Best practices include regular consultations with HR to stay informed and plan effectively for retirement.