January 8, 2018
2018 Calendar of Events For 401(k) and Profit Sharing Plans
Important due/action dates (e.g., year-end testing, contribution requirements, government filings, etc.) as it relates to your 2017 401(k)/Profit Sharing Plan.
1st and 2nd Quarter
| Jan 31 | IRS Form 1099-R must be mailed to all participants who received a distribution in 2017. These are prepared either automatically by your investment platform or, if using a brokerage account, The Benefit Practice, or your CPA. Please confirm that these forms are being prepared, if necessary. |
| Feb 2 | 2017 Plan Year data request packages are due back to The Benefit Practice. |
| Mar 15 | S-Corp. and Partnership taxes are due (without extension). For non-safe harbor 401(k) Plans, deadline for issuing failed ADP/ACP refund checks. These are processed by your investment platform or financial advisor. |
| Mar 31 | Summary Plan Description (SPD) must be given to new participants who entered the Plan on January 1, 2018. For non-safe harbor 401(k) Plans, excise taxes due for failure to make timely correction of failed ADP/ACP testing. |
| Apr 17 | C-Corp. and Individual income taxes are due (without extension). Deadline for Corrective Distributions for 402(g) Excess Deferrals. |
3rd and 4th Quarter
| Jul 2 | Eligible Automatic Contribution Arrangements (EACA), deadline for issuing failed ADP/ACP refund checks. These are processed by your investment platform or financial advisor. |
| Jul 31 | Must distribute updated Summary Plan Description (SPD) and Summary of Material Modifications (SMM) if any plan amendments became effective during the 2017 Plan Year. The Benefit Practice has filed IRS Form 5558 ‐ Extension for Filing IRS Form 5500. Deadline on electronic filing of 2017 IRS Form 5500 & related attachments for Calendar Year plans not placed on extension. For non‐calendar year plans, the initial IRS Form 5500 filing deadline is 7 months after the end of the plan year. (e.g. For a 7/1/2017 ‐ 6/30/2018 plan year: filing date is 1/31/2019.) |
| Sep 15 | 2017 EMPLOYER CONTRIBUTION DEADLINE (401(k) and Profit Sharing Plans) Exception – entities taxed as self-employed businesses (LP, LLC, etc.) can deposit employer matching and profit sharing contributions as late as October 15. Final deadline to file corporate or partnership tax returns on extension. Final deadline to file individual income tax returns on extension. |
| Sep 30 | Deadline for distributing Summary Annual Reports (SAR) to participants for plans that filed their 2017 IRS Form 5500 by July 31st. |
| Oct 15 | For profit sharing plans covering entities taxed as self-employed businesses, all contributions for the 2017 Plan Year are due. Extended deadline for electronic filing of 2017 IRS Form 5500 and related attachments. |
| Dec 1 | Deadline for distributing Safe Harbor Notices, Qualified Default Investment Arrangement Notices and Automatic Contribution Arrangement Notices. |
| Dec 15 | Deadline for distributing Summary Annual Reports (SAR) for plans that filed their 2017 IRS Form 5500 after July 31st and by October 15th. |
| Dec 31 | Corrective Distribution for failed ADP/ACP testing with 10% excise tax. |
