Deadline for processing corrective distributions for failed 2017 ADP/ACP test with 10% excise tax penalty.
Deadline for correcting a failed 2017 ADP/ACP Test with qualified nonelective contributions (QNECs).
Deadline for amending plan for discretionary changes implemented during plan year (certain exceptions apply, e.g., adding salary deferrals, cutting back accrued benefits).
Required Minimum Distributions due under IRC Section 401(a)(9)
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Earlier Event: December 1
Deadline for distributing annual participant notices
Later Event: January 31
Send eligible participants Form 1099-R