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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