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What NiSource Employees Should Know About 2025 and 2026 Federal Tax Brackets

Healthcare Provider Update: NiSource provides employees with a variety of health insurance options including PPO, HMO, and high-deductible plans with HSAs. Dental and vision coverage is available, along with FSAs for healthcare and dependent care. Life insurance equal to twice base pay is company-paid, with options to purchase additional coverage. Disability benefits, accident insurance, and paid sick leave are also included. Retirement benefits feature a 401(k) plan with matching, and employees may receive opt-out credits if they decline coverage 2. NiSource As ACA premiums rise, NiSources employer-sponsored plans and pre-tax savings accounts offer employees a more affordable and stable alternative to marketplace coverage. With insurers requesting double-digit increases and federal subsidies potentially expiring, employer-backed plans like NiSources help shield employees from steep out-of-pocket costs. Click here to learn more

'NiSource employees can benefit from understanding how progressive tax brackets influence long-term income planning,' explains Paul Bergeron, a representative of The Retirement Group, a division of Wealth Enhancement. 'That's why I encourage individuals to review these rules carefully and consult a qualified tax professional for guidance tailored to their situation.'

'NiSource employees can gain clarity in their retirement planning by recognizing how federal tax brackets shape income decisions,' says Tyson Mavar, a representative of The Retirement Group, a division of Wealth Enhancement. 'I encourage individuals to work with a qualified tax professional to evaluate how these rules may apply to their circumstances.'

In this article, we will discuss:

How federal tax brackets work and why they matter.
How taxable income is calculated for retirement planning.
Strategies that may help reduce taxable income.

Navigating taxes can feel more manageable when you understand how your income is allocated to various federal tax bands. Income tax is calculated by the IRS using seven brackets that adjust annually for inflation. You do not pay the same rate on every dollar you earn because income is taxed progressively. Instead, your taxable income is divided into ranges, each taxed at its own rate. NiSource employees can benefit from understanding how their tax brackets may change as they prepare for retirement income decisions.

Below are the IRS’s official 2025 and 2026 bracket tables, along with an explanation of how federal brackets work. The Retirement Group can help review how these rules may influence your long-term income strategy. You can reach us at (800) 900-5867 .

How Federal Tax Brackets Work

The seven federal income tax brackets in the United States are 10%, 12%, 22%, 24%, 32%, 35%, and 37% .

This progressive structure means that each additional portion of income is taxed according to the next bracket as taxable income increases, which may be important for NiSource employees reviewing future retirement income.

Your marginal tax rate applies to the last dollar of taxable income you earn. Your effective tax rate represents the overall percentage of income paid toward federal tax after all brackets are applied.

Your tax brackets also depend on the filing status you choose:

- Single
- Married filing jointly
- Married filing separately
- Head of household (single with a qualifying dependent)

The IRS adjusts these brackets every year to account for inflation.

How Your Taxable Income Is Calculated

To determine taxable income, start by adding all sources of taxable income, such as interest, qualifying pre-2019 alimony, tips, bonuses, and both employment and freelance earnings.

Next, subtract items already included on your W-2, such as contributions to a health savings account (HSA) or retirement plan contributions through your employer (401(k)).

Then subtract either your itemized deductions or the standard deduction—whichever applies. The remaining amount is your taxable income.

A Federal Effective Tax Rate Example

If a married couple with $150,000 in total income files jointly in 2025 and takes the standard deduction of $31,500 , their taxable income becomes $118,500 . Their federal tax calculation would look like this:

- 10% on the first $23,850 → $2,385
- 12% on $23,851 to $96,950 → $8,772
- 22% on the remaining amount up to $118,500 → $4,741

- Total federal income tax: $15,898

- Effective tax rate: approximately 10.6%

(All bracket values sourced from IRS inflation adjustment notices above.)

Possible Strategies to Lower Taxable Income

These approaches may help reduce taxable income and potentially push you into a lower tax bracket:

- Contributing to traditional IRAs or employer retirement plans
- Adding funds to an HSA if enrolled in a qualifying high-deductible health plan
- Using tax-loss harvesting in taxable brokerage accounts
- Considering the timing of controlled income, such as bonuses or freelance payments

Starting in 2026, taxpayers who do not itemize may deduct up to $1,000 (single filers) or $2,000 (married filing jointly) for eligible cash charitable contributions.

Do You Have Questions About How Taxes Influence Retirement?

Federal tax brackets play a key role in retirement planning, especially when reviewing withdrawal timing, Social Security decisions, and income sources. NiSource employees can explore how tax rules fit into their broader retirement planning with guidance from The Retirement Group .

For personalized retirement discussions, call us at (800) 900-5867 .

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Sources:

1. Internal Revenue Service. Revenue Procedure 2024-40. 22 Oct. 2024,
https://www.irs.gov/pub/irs-drop/rp-24-40.pdf . Accessed 8 Dec. 2025.

2. Tax Policy Center. “How Do Federal Income Tax Rates Work?” Tax Policy Center Briefing Book , Jan. 2024,
https://www.taxpolicycenter.org/briefing-book/how-do-federal-income-tax-rates-work . Accessed 8 Dec. 2025.

3. Financial Industry Regulatory Authority (FINRA). “Retirement Accounts.” FINRA for Investors ,
https://www.finra.org/investors/investing/investment-accounts/retirement-accounts . Accessed 8 Dec. 2025.

4. Adams, Hayden. “Using Tax Brackets to Manage Your Taxable Income.” Charles Schwab , 12 Feb. 2025,
https://www.schwab.com/learn/story/using-tax-brackets-to-manage-your-taxable-income . Accessed 8 Dec. 2025.

5. Vanguard. “Year-End Tax-Savings Tips.” Vanguard Investor Resources & Education , 26 Aug. 2025,
https://investor.vanguard.com/investor-resources-education/article/year-end-tax-tips . Accessed 8 Dec. 2025.

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Eligibility Criteria for Niagara Mohawk Pension Plan: Employees of Niagara Mohawk Power Corporation who are represented by Local Union 97 of the IBEW and work at least 20 hours per week or accumulate 1,000 hours in a Pension Plan year are eligible. Participation begins automatically on the first day of employment. These criteria directly impact retirement planning by determining when employees begin accruing pension benefits and how much they will receive at retirement(National_Grid_2023_Niag…).

Within the framework of the National Grid Pension Plan, how does the cash balance formula work in calculating retirement benefits, and what implications does this have for employees of Niagara Mohawk Power Corporation when considering their long-term financial outlook?

Cash Balance Formula: The National Grid Pension Plan for Niagara Mohawk employees uses a cash balance formula that provides monthly pay-based credits (starting at 4% and increasing with years of service) and interest credits. These accumulate in a hypothetical account, growing until retirement, allowing employees to track their retirement benefits much like a savings account. This formula impacts financial outlook by providing predictable growth tied to service and pay(National_Grid_2023_Niag…).

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How do pension benefits work for Transition Group Employees specifically within National Grid's framework, and what unique provisions apply to them under the Pension Plan as compared to regular employees of Niagara Mohawk Power Corporation?

Pension Benefits for Transition Group Employees: Transition Group Employees under the National Grid Pension Plan have benefits calculated using both the former final average pay formula and the cash balance formula, with the greater benefit being paid out. This differs from regular employees who only receive benefits calculated under the cash balance formula(National_Grid_2023_Niag…)(National_Grid_2023_Niag…).

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Impact of Vesting Requirements: Employees must complete three years of service to become vested in the Niagara Mohawk Pension Plan. If they leave before vesting, they lose all accrued pension benefits. Understanding vesting requirements is crucial for career and retirement planning, as it ensures employees retain their pension benefits if they meet the criteria(National_Grid_2023_Niag…).

As a current employee at National Grid, what does the termination of the Pension Plan imply for accrued benefits under the Niagara Mohawk Pension Plan? Specifically, how do federal protections through ERISA and the Pension Benefit Guaranty Corporation come into play for employees seeking assurance regarding their retirement funds?

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