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When must a SIMPLE IRA plan be established for a given tax year?

In most cases, a SIMPLE IRA plan must be established by October 1 of the year it takes effect. This deadline ensures employees have sufficient time to enroll and begin making contributions before the end of the calendar year.

For example, if an employer wants a SIMPLE IRA plan to be active for 2026, the plan typically needs to be set up by October 1, 2026.

There is an exception for new businesses formed after October 1. These businesses may be allowed to establish a SIMPLE IRA plan as soon as they become operational.

WealthRabbit provides guidance and reminders on setup deadlines to ensure employers do not miss critical timeframes.