California Retirement Mandate: CalSavers or Your Own 401(k)

A founder I know runs a small studio in Oakland with four people on payroll. She treated a state letter as junk mail for most of a year. It was a registration notice for the retirement mandate, and by the time she asked me about it the penalty clock had already been running for months.

That is the shape of this rule. It does not arrive as an audit or a lawsuit. It arrives as a piece of mail telling you that because you pay somebody in California and do not sponsor a retirement plan, you now have to pick one of two paths, and picking neither is a per-employee fine.

What follows is who is actually covered, how the deadlines get assessed every spring, what noncompliance costs, how the state auto-IRA works down to the default deferral rate, and the real case for skipping the program and sponsoring your own 401(k). I build the people and records tooling for small businesses without a dedicated HR person at FirstHR. FirstHR is an onboarding and HR platform, not a payroll provider and not a retirement plan provider, and this is general information rather than legal or tax advice.

What the Law Requires

California gives an employer without a retirement plan exactly two compliant positions: sponsor a qualifying plan of your own, or register your workplace with the state program and run the payroll deductions. There is no third position where you decline both and wait.

The exemption language in the statute is broader than most owners expect and worth reading literally. An employer that provides an employer-sponsored retirement plan, including a defined benefit plan, a 401(k), a SEP, or a SIMPLE, or that offers an automatic enrollment payroll deduction IRA, is exempt from the program requirements (California Government Code 100032). The plan itself discharges the duty. Telling the state about it is a separate step that people skip.

None of this is unique to California, either. A widening group of states now run comparable auto-IRA programs, so an employer with staff in several states can be facing more than one registration with different rules attached. California was the largest program and is the furthest along in its rollout.

Who Has to Register

You are covered if you employ an average of one or more eligible employees in California and do not sponsor a qualifying retirement plan. That is the entire test, and the threshold reaching a single employee is what changed the picture for small businesses.

An eligible employee is age eighteen or older and receives W-2 wages for work in California. Part-time counts. Seasonal counts. Somebody who joined in November counts. The definition does not carve out short tenure or low hours, which is why the question of whether part-time staff are covered comes up so often and has such a boring answer here.

The exclusions are specific rather than general. Sole proprietors and partnerships with no employees other than the owners fall outside the mandate, as do government entities, religious organizations, and tribal organizations. Everyone else is either registered or exempt by certification, and the difference between those two states is a form, not a judgment call.

Employers using a professional employer arrangement or a staffing agency should confirm which entity reports the wages, because the obligation follows the entity filing the payroll returns. If you are working through the wider set of state duties that attach to a California workforce, the California compliance hub covers the neighboring rules that tend to arrive in the same envelope.

When Registration Was Due

The phased rollout is over. The statute set staged deadlines by employer size, and the final one, reaching employers with a single eligible employee, was December 31, 2025.

The rolling row is the one that still generates work. Each spring the program assesses employer status by averaging the four quarterly payroll filings you already submit to the Employment Development Department, then sends registration information to newly identified employers by mail or email. Those employers have until December 31 of that year to register or certify an exemption.

Which means a business that was genuinely outside the mandate last year can be inside it this year without doing anything differently. Hiring your first employee is the trigger. So is the first year your average headcount crosses a phase threshold, if you somehow missed the earlier waves.

What Ignoring It Costs

The penalty is per eligible employee and it escalates on a fixed schedule. An employer that fails, without good cause, to allow its eligible employees to participate is subject to $250 per eligible employee once noncompliance continues 90 days or more after the board serves a final notice of penalty application, plus an additional $500 per eligible employee if noncompliance continues 180 days or more (California Government Code 100033).

The phrase doing the most work in that provision is "after the board serves a final notice." The clock runs from the notice, not from the original deadline, so an employer who opens the mail and acts is in a completely different position from one who does not. Late is recoverable. Ignoring it is what converts a form into a bill.

How the Auto-IRA Works

The program enrolls employees automatically at a set deferral rate into a Roth IRA in their own name, funded from their own wages, and escalates that rate over time unless they intervene. Four defaults do almost all the work.

Contribution ceilings are the federal IRA limits, not plan limits, and that is the constraint that pushes ambitious savers elsewhere. The IRA limit rose to $7,500 for 2026 with a catch-up of $1,100 for savers age 50 and over, per IRS Notice 2025-67. Against a 401(k) deferral limit of $24,500 for the same year, the gap is roughly three to one.

Roth income limits apply too, because these are ordinary Roth IRAs. For 2026 the phase-out range runs from $153,000 to $168,000 for single filers and from $242,000 to $252,000 for married couples filing jointly, per IRS Notice 2025-67. Savers above those ranges have to recharacterize to a traditional IRA or opt out, and that is their problem to solve, not yours to spot.

Savers carry the program costs. Per the program fee schedule effective May 1, 2026, the total annualized asset-based fee runs between 0.225 percent and 0.39 percent of the account balance depending on fund choice, plus a fixed account fee of $3.50 per quarter. Employers pay nothing. The program has grown to 629,324 funded accounts as of March 31, 2026 according to the participation snapshot published by the California State Treasurer, up from 599,352 at the end of 2025.

Your Payroll Role, and Where It Stops

Your obligations are administrative and they are short. You register, you keep a roster current, and you move money that belongs to your employees. Everything past that belongs to the state.

The fiduciary point is the one worth internalizing, because it inverts the instinct most owners bring from anything labeled retirement. The statute states that employers are not fiduciaries over the trust or the program, and are not liable for an employee's decision to participate or opt out, for investment decisions, for investment performance, or for program design and administration (California Government Code 100034).

That protection has an edge to it. It covers the program, not your payroll hygiene. The program regulations give you seven business days from the date of the deduction to get the money across, and money withheld from a paycheck and left sitting is your failure regardless of who is fiduciary of the account. It is the single operational risk in an otherwise low-risk obligation.

There is also a soft cost nobody puts on the sheet: fielding the questions. Employees see a new deduction and ask you about it. The correct answer is to point them at the program, and the practical answer is to prepare one paragraph for your benefits materials and one for the onboarding packet so you write it once rather than eleven times.

Registering, Step by Step

Registration itself takes a short sitting once you have the access code. The sequence below is the whole obligation, start to finish.

Sponsoring a 401(k) Instead

Sponsoring your own plan discharges the mandate completely and changes what you are offering from access into compensation. It also moves you from a state-administered arrangement with no employer duties into an ERISA plan where you are the sponsor and the fiduciary.

What you gain is capacity and control. The employee deferral limit for 2026 is $24,500 with a catch-up of $8,000 at age 50 and over, and a higher catch-up of $11,250 for savers age 60 through 63, per IRS Notice 2025-67. You can make employer contributions, attach a vesting schedule to them, and allow loans and rollovers. None of that exists in the state program.

What you take on is real. An ERISA plan brings an annual Form 5500 filing, participant disclosures, and genuine fiduciary duty over plan investments and fees.

It also brings annual nondiscrimination testing, which is exactly where small employers get caught. When the owners defer heavily and nobody else does, the plan fails and the correction is a taxable refund to the people who most wanted to save.

Two design choices soften that. A safe harbor design trades a mandatory, immediately vested employer contribution for automatic satisfaction of the main tests. And SECURE 2.0 requires most newly established 401(k) plans to enroll employees automatically at a rate between 3 and 10 percent, escalating annually, with exemptions for the smallest and newest businesses. If you were going to auto-enroll anyway, that requirement costs you nothing.

How to Choose Between Them

The decision is not about which is the better retirement vehicle. It is about whether retirement saving is something you want to pay for.

Run the test in this order. Do you or your senior people want to defer more than the IRA limit? If yes, the state program cannot do it and a plan is the answer. Do you want retirement to work as compensation in hiring conversations? If yes, you need an employer contribution, which again means your own plan.

The last item on the right is underrated. Every additional mandate state means another registration, another portal, and another remittance rhythm. One plan sponsored federally satisfies all of them at once, which changes the arithmetic for a distributed team in a way it never does for a single-state business.

Where Employers Get This Wrong

Five patterns, and the first one is the expensive one.

Treating the notice as junk mail is first. The penalty schedule runs from service of the final notice, so the envelope is the thing that starts the clock and opening it is the thing that stops it.

Assuming a 401(k) makes the paperwork disappear is second. Sponsoring a plan removes the duty to run deductions, not the duty to certify the exemption, and the notices keep arriving until you do.

Believing part-time or seasonal staff do not count is third. The eligible employee definition turns on age and California W-2 wages, not on hours or tenure, so a summer hire counts the same as a full-year one.

Holding withheld contributions is fourth. The seven business day window applies to money already taken out of wages, and it is the one place in this obligation where an ordinary payroll delay becomes a real problem.

And treating registration as a one-time event is last. The state reassesses employer status annually from payroll filings, so a business that was outside the mandate can be inside it the following year without anything changing on its side except a hire.

Frequently Asked Questions