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Are Ghost Taxes Creeping Into Your USG Corporation Retirement Plan?

'Many USG Corporation 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 USG Corporation 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 USG Corporation employees and retirees.
Strategies to better understand and prepare for these tax implications.

How USG Corporation 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 USG Corporation.

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 USG Corporation 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.

How does the retirement plan structure at USG Corporation impact both final average earnings participants and cash balance participants, especially regarding their eligibility and benefits accrued over time? In what ways does the differentiation between these two categories influence the retirement outcomes for employees of USG Corporation?

Retirement Plan Structure: USG Corporation's retirement plan differentiates between Final Average Earnings Participants and Cash Balance Participants. Final Average Earnings participants, who joined before January 1, 2011, accrue benefits based on their final average earnings and years of service, which can result in higher benefits for longer-serving employees. Cash Balance participants, who joined after January 1, 2011, have their benefits calculated based on a cash balance account, which grows with contributions and interest credits. These differences affect retirement outcomes, as Final Average Earnings participants may see higher pension payments if they have longer service or higher wages, while Cash Balance participants have more predictable but potentially lower benefits based on their account balance(USG Corporation_Retirem…).

USG Corporation's Retirement Plan allows for different age-specific rules regarding early retirement. How do the "Rule of 90" and "Rule of 82" affect the financial planning of employees considering an early retirement option, and what should they consider regarding their long-term financial security?

Rule of 90 and Rule of 82: The "Rule of 90" allows employees to retire early without a reduction in benefits if their age plus years of service total 90, provided they retire at or after age 62. The "Rule of 82" permits early retirement with reduced benefits for those whose age and years of service total 82. Employees planning early retirement must consider these rules as they directly affect the amount of benefits they receive, making it important to assess how long-term financial security will be impacted, especially if they retire before age 62(USG Corporation_Retirem…).

Could you elaborate on the process through which employees at USG Corporation can change their beneficiaries within the retirement plan? What steps need to be taken, and what are the implications of these changes on the benefits received upon the participant's death?

Changing Beneficiaries: To change beneficiaries, USG Corporation employees must contact Your Benefits Resources™, where they can designate a primary and contingent beneficiary. If married, the spouse must provide notarized consent to name a different primary beneficiary. The process involves completing a form, and any changes affect who receives benefits upon the participant's death. Failing to update the beneficiary could result in benefits being paid to unintended individuals(USG Corporation_Retirem…).

As part of the retirement process at USG Corporation, how are pensionable earnings calculated? What factors are included in this determination, and how might they vary among different employees based on their roles within the organization?

Pensionable Earnings Calculation: Pensionable earnings at USG Corporation include regular pay, shift differentials, and bonuses but exclude items like nonqualified deferred compensation, severance, and stock awards. These earnings are used to calculate benefits based on formulas that take into account an employee’s service years and earnings over the 36 highest consecutive months of the last 15 years of participation(USG Corporation_Retirem…).

How does the automatic enrollment in the USG Corporation Retirement Plan work, and what options do employees have if they initially chose not to participate? What implications might this have for their retirement savings strategy?

Automatic Enrollment and Opting In: Employees at USG Corporation are automatically enrolled in the retirement plan unless they choose to opt out. If employees decide not to participate initially, they can enroll later by contacting Your Benefits Resources™. Failure to participate from the start could result in lower retirement savings due to fewer years of contributions(USG Corporation_Retirem…).

In the context of USG Corporation, what are the potential tax consequences for employees withdrawing their retirement benefits, especially regarding the mandatory withholdings? How might employees effectively manage these tax liabilities when planning for retirement?

Tax Consequences of Withdrawals: Employees withdrawing their retirement benefits from USG Corporation will face mandatory federal income tax withholdings, typically 20% for lump sum distributions, unless the distribution is rolled over into an IRA. Employees must plan for these taxes when withdrawing to avoid unexpected liabilities and ensure they maximize their after-tax retirement income(USG Corporation_Retirem…).

How do employees at USG Corporation access the necessary documents related to their retirement benefits, and what is the process for obtaining copies of these documents if needed? What are the responsibilities of the Plan Administrator in this process?

Accessing Retirement Documents: Employees can access documents related to their retirement benefits through Your Benefits Resources™ online or via phone. If additional copies are needed, employees can request them from the Plan Administrator for a small fee. The Plan Administrator oversees ensuring these documents are provided to participants as required by ERISA(USG Corporation_Retirem…).

What unique provisions exist for USG Corporation employees who experience a break in service? How do these provisions impact their accumulated benefit service and overall benefits upon reemployment?

Break in Service Provisions: USG Corporation allows employees who experience a break in service to retain their accumulated benefits if they are reemployed within one year. If reemployed after one year, their previous service may not count toward future benefits unless they were vested prior to termination. This can affect the total benefits an employee accrues if they leave and later return(USG Corporation_Retirem…).

What options do employees of USG Corporation have for managing their benefits if they return to work after retirement? How does this affect their pension benefits and the overall strategy for maximizing retirement income?

Returning to Work After Retirement: Employees returning to work after retirement at USG Corporation will have their pension payments suspended and recalculated based on additional years of service. This recalculation takes into account prior payments, meaning employees should consider the impact of returning to work on their long-term pension strategy(USG Corporation_Retirem…)(USG Corporation_Retirem…).

How can employees of USG Corporation contact their Benefits Resourcesâ„¢ for more information on their retirement plan options? Are there specific channels preferred for different types of inquiries, and what resources are available to assist them?

Contacting Benefits Resources™: Employees can contact Your Benefits Resources™ via the web or a toll-free number to inquire about retirement plan options. Different inquiries, such as changes to beneficiaries or requesting benefit estimates, can be handled through these channels. Resources such as detailed benefit estimates are available to help employees plan for retirement(USG Corporation_Retirem…).