If you’re considering setting up a new 401(k) plan or amending your current one, it’s important to keep these key deadlines on your radar. Here’s a few important dates to keep in mind:
🔹 March 15, 2025 - Deadline for S-corps & partnerships to adopt a 2024 401(k) plan (assuming no filing extension).
🔹 April 15, 2025 - Deadline for C-corps & sole proprietors for a 2024 401(k) (assuming no filing extension).
🔹 October 1, 2025 - Last chance to adopt a safe harbor 401(k) for 2025.
🔹 December 2, 2025 - Deadline to amend traditional 401(k)s for 3% safe harbor or notify of 2026 match-based safe harbor conversion.
🔹 December 31, 2025 - Final deadline for 4% safe harbor amendment for 2024 plans.
With all the competing requirements of running a business, these deadlines can easily sneak up on you. Meeting them can ensure smooth operations and a better retirement experience for you and your team.
Reach out if you have questions on how to take full advantage of your retirement plan options!
Key 401(k) Deadlines for 2025