401(k) Plan Setup and Funding Calendar




Entity* Month(s) Task Description Responsibility Due Date** Notes
CC SC P SP
November Request Retirement Plan Proposal Submit initial census, employer information and funding goals Employer / Advisor November 1
November-December Design Retirement Plan Provide various contribution scenarios and recommended plan design to optimize funding goals. Prepare plan documents. TPA November - December
November-December Open Retirement Accounts Vendor forms completed and submitted to establish 401(k) retirement accounts Advisor November - December
December Execute Plan Documents Last day to execute 401(k) Plan Documents Employer December 31
December Fund final deferral contributions Owner's final deferral contributions run through payroll Employer December 31 Should be deposited by January 7
January - February Submit census information Complete census information submitted Employer / Advisor February 15
March Fund Employer Contributions Last day to fund ER Contributions Employer March 15*** Form 1065 and 1120S Return deadline
January - March Submit census information Complete census information submitted Employer / Advisor March 15
April Fund Employer Contributions Last day to fund ER Contributions Employer April 15*** Schedule C and Form 1120 Return deadline
April Fund Deferral Contributions Last day to fund Owner's Employee Deferral Contributions Employer April 15*** Form 1040 deadline
January - August Submit census information Complete census information submitted Employer / Advisor August 15
September Fund Employer Contributions - On Extension Last day to fund ER Contributions if company return is on extension Employer September 15*** Form 1065 and 1120S Return extended deadline
January - September Submit census information Complete census information submitted Employer / Advisor September 15
October Fund Employer Contributions - On Extension Last day to fund ER Contributions if company return is on extension Employer October 15*** Form 1120 and Schedule C extended deadline
October Fund Deferral Contributions - On Extension Last day to fund Owner's Employee Deferral Contributions Employer October 15
November Request Estimated Calculations Estimate employer contribution scenarios for current year Employer / Advisor November 1


* CC = C-Corp | SC = S-Corp | P = Partnership | SP = Sole Proprietor
** Dates shown assume a January 1 – December 31 plan year and calendar year tax years.
*** IRS deadline extended to the next business day if due date falls on weekend or legal holiday (Internal Revenue Code Section 7503)


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