Alliant Energy Corporate Services 401(k) match, vesting and fees
What Alliant Energy Corporate Services' 401(k) plan says about matching contributions
Plan features
Match, vesting and enrollment details have not been published from this plan's audit report yet. The figures below come from the structured filing.
| Recordkeeper | Empower Annuity Ins Co of America | Schedule C ↗ |
| Independent auditor | Deloitte & Touche LLP (unmodified opinion) | Schedule H ↗ |
| Plan type and status | 401(k) · Active | Form 5500 ↗ |
| Late participant contributions | Reported on the filing | Schedule H ↗ |
How the plan compares
Plan year 2024 medians for 87 defined-contribution plans in utilities with 1,000 to 4,999 participants.
| Alliant Energy Corporate Services: employer contribution per participant | $7,374 | |
| Peer median | $5,188 |
| Alliant Energy Corporate Services: average balance | $334,128 | |
| Peer median | $183,243 |
| Alliant Energy Corporate Services: admin expenses ÷ assets | 0.07% | |
| Peer median | 0.09% |
Admin expenses are the plan's reported administrative expenses divided by its assets; they do not include fund expense ratios.
Plan history
Plan assets went from $1.3B at the end of plan year 2023 to $1.4B at the end of plan year 2024.
| Plan year | Participants | Assets | Employer contributions | Per participant | Admin expense ratio | Match formula | Filing |
|---|---|---|---|---|---|---|---|
| 2024 | 4,222 | $1.4B | $31.1M | $7,374 | 0.07% | Not published | Form 5500 ↗ |
| 2023 | 4,517 | $1.3B | $29M | $6,456 | 0.07% | Not published | Form 5500 ↗ |
Other Alliant Energy Corporate Services plans (1)
Each plan files its own Form 5500. Figures are from each plan's latest filing.
Alliant Energy Cash Balance Pension Plan
Plan features
Match, vesting and enrollment details have not been published from this plan's audit report yet. The figures below come from the structured filing.
| Independent auditor | Coleman & Williams Ltd (unmodified opinion, limited scope) | Schedule H ↗ |
| Plan type and status | Pension (defined benefit) · Active | Form 5500 ↗ |
Common questions
Does Alliant Energy Corporate Services match 401(k) contributions?
The match terms for the Alliant Energy Corporation 401(k) Savings Plan have not been published from its filing yet. The plan year 2024 filing reports $31.1M in employer contributions, about $7,374 per participant. That total includes any match and profit-sharing; it is not a match formula.
When is the Alliant Energy Corporate Services 401(k) match vested?
The vesting schedule for the Alliant Energy Corporation 401(k) Savings Plan is not in the data published so far. Your Summary Plan Description states it.
Who manages the Alliant Energy Corporate Services 401(k)?
The recordkeeper listed on Schedule C of the plan year 2024 filing is Empower Annuity Ins Co of America. The plan administrator is Benefit Plans Committee of Alliant Energy Corporation.
I left Alliant Energy Corporate Services. How do I find my old 401(k)?
Your account stays in the plan until you move it. Contact the plan administrator (Benefit Plans Committee of Alliant Energy Corporation, (608) 458-3311) or the recordkeeper, Empower Annuity Ins Co of America. The Alliant Energy Corporate Services old 401(k) page lists the contacts from every plan filing. Find an old Alliant Energy Corporate Services 401(k)
Data from the public Form 5500 annual reports Alliant Energy Corporate Services filed with the U.S. Department of Labor (plan years 2023 and 2024) and, where noted, the attached independent auditor's report. Plan terms may have changed since the filing; check your current Summary Plan Description. PlanFacts is not affiliated with Alliant Energy Corporate Services. Not financial advice. Report a correction · Methodology