SIMPLE IRA Contribution Deadlines: Deposits, Setup, and Notices

SIMPLE IRA contribution deadlines split into two tracks. Employee salary deferrals must be deposited into each participant’s IRA no later than 30 calendar days after the end of the month they were withheld from pay. Employer matching or nonelective contributions have a longer runway: they’re due by the business’s federal income tax filing deadline for that year, including extensions.1Internal Revenue Service. SIMPLE IRA Plan Two other dates matter alongside those: the plan must exist by October 1 to cover the current year, and the annual employee notice must go out before the November 2 election period.

When Employee Deferrals Must Be Deposited

The 30-day rule is an outer boundary, not a target. The underlying standard from the Department of Labor is that withheld employee money must be deposited as soon as it can reasonably be separated from the employer’s general assets.2U.S. Department of Labor. SIMPLE IRA Plans for Small Businesses For most SIMPLE IRA sponsors, that “as soon as possible” language, not the 30 days, is the real obligation.

Plans with fewer than 100 participants get a safe harbor. If you deposit deferrals within seven business days of the payroll date, the deposit is automatically treated as timely.2U.S. Department of Labor. SIMPLE IRA Plans for Small Businesses Almost every SIMPLE IRA falls under 100 participants, so the seven-business-day mark is the practical benchmark. Faster is better, and slower isn’t necessarily late, but seven business days is the line that guarantees you’re clear.

What Happens If a Deferral Deposit Is Late

A late deposit is treated as a prohibited transaction. The IRS charges a 15% excise tax on the amount involved for each year or partial year the money sat outside the participant’s account, reported and paid on Form 5330.3Internal Revenue Service. Instructions for Form 5330 Leave it uncorrected and the penalty escalates to 100% of the amount involved.4Internal Revenue Service. 401(k) Plan Fix-It Guide – You Haven’t Timely Deposited Employee Elective Deferrals

You also owe lost earnings to the affected employees, calculated by compounding interest from the date the deposit was due through the date it was actually made.5Internal Revenue Service. Form 5330 Phone Forum Questions and Answers Dollar amounts on small deposits are usually modest; the paperwork and audit exposure are the bigger cost.

The IRS Employee Plans Compliance Resolution System can’t clean up a prohibited transaction on its own. The Department of Labor’s Voluntary Fiduciary Correction Program does that piece, and filing through VFCP provides conditional relief from certain excise taxes.6U.S. Department of Labor. Voluntary Fiduciary Correction Program The correction itself is straightforward: deposit the missed amount plus lost earnings, then file.4Internal Revenue Service. 401(k) Plan Fix-It Guide – You Haven’t Timely Deposited Employee Elective Deferrals

When Employer Contributions Are Due

The employer’s matching or nonelective contribution is due by the business’s federal income tax return deadline for the year the contribution applies to, including any extension.1Internal Revenue Service. SIMPLE IRA Plan The specific date depends on how the business is structured:

Two things worth flagging. First, the contribution has to be clearly designated as applying to the prior tax year, or the deposit gets treated as a current-year contribution. Second, a filing extension truly does extend this deposit deadline. Extensions of time to file don’t extend time to pay taxes, but because the employer SIMPLE IRA contribution deadline is pegged to the filing due date rather than the payment due date, an extension buys you the extra months.2U.S. Department of Labor. SIMPLE IRA Plans for Small Businesses

The October 1 Plan Setup Deadline

You can only make contributions to a SIMPLE IRA for a given year if the plan document was in place in time. A SIMPLE IRA can be established effective any date between January 1 and October 1, as long as neither you nor a predecessor employer previously maintained one. Miss October 1 and the earliest effective date shifts to the following January 1.11Internal Revenue Service. Retirement Plans FAQs Regarding SIMPLE IRA Plans

Businesses that came into existence after October 1 get one exception: they can establish the plan as soon as administratively feasible after the business begins operating.11Internal Revenue Service. Retirement Plans FAQs Regarding SIMPLE IRA Plans No exception exists for existing businesses that simply missed the date.

Annual Notice Deadline: Before November 2

Each year, employers must give eligible employees a written notice explaining their right to make or change salary deferral elections and identifying which employer contribution formula applies for the coming year.1Internal Revenue Service. SIMPLE IRA Plan The notice has to go out before the election period begins on November 2, which practically means a November 1 deadline.12Internal Revenue Service. SIMPLE IRA Plan Fix-It Guide – Annual SIMPLE IRA Plan Notification Requirements Weren’t Followed The election period then runs 60 days, from November 2 through December 31, giving employees time to set deferral amounts for the upcoming calendar year.

Missing the notice deadline can require corrective action under the IRS fix-it procedures and may obligate the employer to make additional contributions. It’s one of the most commonly missed steps because it recurs every year even when nothing about the plan has changed.

If you use the 3% match and want to reduce it (down to as low as 1%), the annual notice is where that reduction gets disclosed. The reduction is only allowed in two calendar years out of any rolling five-year window.1Internal Revenue Service. SIMPLE IRA Plan

You Can’t Terminate Mid-Year

One boundary worth knowing about the calendar: a SIMPLE IRA can’t be shut down in the middle of the year. Once the plan is in effect for a given year, it runs through December 31, and you have to fund every contribution the annual notice promised.11Internal Revenue Service. Retirement Plans FAQs Regarding SIMPLE IRA Plans

To end the plan effective the following January 1, notify employees within a reasonable time before November 2, and tell the financial institution and your payroll provider that no contributions will be made for the next year. The IRS doesn’t need to be notified. A late-year decision to terminate can push the effective end date more than a full year out.