FICA Alternative Retirement Plan: Contributions, Payouts, and Rules

A FICA alternative retirement plan is an individual retirement account that a state or local government uses in place of Social Security for part-time, seasonal, and temporary employees. Federal law requires every public worker to have some form of retirement coverage, so when a government employer leaves those workers out of its main pension, it must either pay Social Security tax on their wages or run a qualifying substitute. The substitute has to put at least 7.5% of each paycheck into an account in your name.¹

Who Gets Enrolled

Enrollment is automatic and mandatory. If your part-time, seasonal, or temporary position at a state or local government agency qualifies, payroll flags you at hire and contributions start with your first check. You can’t opt out. The IRS treats participation as a condition of employment for workers who meet the criteria.

Most full-time government employees never see one of these plans because they’re already in the employer’s primary pension. The alternative fills the gap for everyone else: part-time administrative staff, seasonal recreation workers, temporary project hires, and often student workers at public colleges and universities. Section 3121(b)(7)(F) of the Internal Revenue Code, added by the Omnibus Budget Reconciliation Act of 1990, is what put this in place; before then, some part-time and seasonal public employees had no retirement coverage at all.²

One boundary worth flagging up front: student employees working for the school where they’re enrolled are generally exempt from FICA and from these substitute plans. More on that at the end.

What Comes Out of Your Paycheck

The rule sets a floor, not a ceiling. Total contributions to your account must be at least 7.5% of your compensation each pay period.¹ Some employers take the full 7.5% out of your pay. Others split it, contributing a share themselves. Either structure is allowed.

For comparison, Social Security takes 12.4% overall, 6.2% from you and 6.2% from the employer.³ So the numbers on your pay stub can look higher than a Social Security deduction depending on how your employer splits the cost, but the money is going into an account with your name on it instead of into the national trust fund.

Contributions go in pre-tax, which lowers your taxable income for the year. You’ll owe income tax on the money when you withdraw it later, not now. That’s a real difference from Social Security tax, which comes out of after-tax pay.

Plans define “compensation” using your employer’s base pay. They’re allowed to exclude overtime, bonuses, and severance, and they can disregard pay above the Social Security wage base ($184,500 in 2026).⁴ Not every plan uses that cap, so it’s worth checking your plan document.

The Account Is Yours from Day One

For part-time, seasonal, and temporary workers, every dollar deposited is 100% vested immediately. No waiting period. No vesting schedule.¹

Your money sits in a limited menu of investments the employer or plan administrator picked. Many plans default to conservative choices like stable value or money market funds that focus on preserving principal rather than growing it. Others offer stock, bond, and balanced fund options through a platform like Fidelity or VOYA. Two categories of cost eat at returns: a flat administrative charge, often deducted quarterly, and the expense ratios built into each investment option. The regulation requires that the account earn a reasonable rate of return after those expenses.

One rule catches people off guard: while you’re still employed, you generally can’t take loans or hardship withdrawals from the account. The money is locked until you separate from service.

401(a) or 457(b) — and Why the Difference Matters

FICA alternative plans aren’t a single account type. Government employers can use any qualifying retirement vehicle, but the two common structures are 401(a) defined contribution plans and 457(b) deferred compensation plans.¹

Contribution and vesting rules are essentially identical. The two places they diverge are annual contribution ceilings and early withdrawal penalties. A 457(b) has an annual deferral limit of $24,500 in 2026; a 401(a) sits under the higher Section 415(c) limit of $72,000.⁵ At a 7.5% contribution rate, neither cap matters for most part-time or seasonal workers unless you also make voluntary deferrals into a separate 457(b) with the same employer, in which case those share the $24,500 limit.

The penalty difference is where it gets consequential. Keep reading.

Getting Your Money When You Leave

When your employment ends, you can access the full account balance. You submit a distribution request to the plan administrator, and most are processed within 30 to 90 days after your separation is official. Two basic options:

Roll it over. A direct rollover into an IRA or another eligible employer plan keeps the money tax-deferred and avoids any immediate tax hit. This is usually the right move if you don’t need the cash now.
Take the cash. The administrator withholds 20% for federal income tax before sending you the check, and you settle up the actual tax owed on your return.

Now the plan type. If your FICA alternative is a governmental 457(b), there is no 10% early withdrawal penalty regardless of your age. You can cash out at 25 or at 45 after separating and owe only ordinary income tax.⁶ That’s one of the biggest reasons many governments use the 457(b) structure.

If your plan is a 401(a), the standard early withdrawal rule applies. Cashing out before age 59½ triggers a 10% additional tax on top of income tax unless a specific exception applies.⁶ On a $5,000 balance, that penalty is $500 you don’t get back. Confirm the plan type before you request a distribution.

A caveat for 457(b) participants: rolling into a traditional IRA or a 401(k) means the receiving account’s rules take over, and you lose the penalty-free early access. If you might want the money before 59½, leave it in the 457(b) or roll into another governmental 457(b).

Required Minimum Distributions

Like other tax-deferred accounts, these plans eventually force you to start withdrawing. The current age is 73. You must begin required minimum distributions by April 1 of the year after you turn 73 if the money is in the plan or in a traditional IRA.⁷

Still working for the same government employer past 73? You can generally delay RMDs from the workplace plan until the year you actually retire. Once you separate or roll into an IRA, the age-73 schedule kicks in.⁷

What Happens If You Die First

The balance goes to the beneficiary you named at enrollment. Your beneficiary can take a lump-sum cash distribution, taxable in the year received, or roll it into their own IRA to stretch out the tax impact.

The beneficiary form the plan administrator has on file controls, not your will. If you’ve been through a divorce, remarriage, or another life change since enrolling, update the designation. Otherwise the money can go somewhere you didn’t intend.

Effect on Your Social Security

Because these contributions replace Social Security tax, no Social Security credits build up from that job. You need 40 credits, roughly 10 years of covered work, to qualify for Social Security retirement benefits. If your whole work history is in FICA alternative positions, you won’t qualify. A mixed history of covered and non-covered work can leave your credit total lower than you expect.

Two provisions used to further shrink Social Security benefits for people with non-covered government pensions. The Windfall Elimination Provision applied a less favorable formula to your own retirement benefit, and the Government Pension Offset cut spousal or survivor benefits by two-thirds of the government pension amount.⁸

That changed. The Social Security Fairness Act, signed into law on January 5, 2025, eliminated both WEP and GPO. The repeal applies retroactively to benefits payable from January 2024 forward, and the Social Security Administration is issuing one-time retroactive payments to affected beneficiaries.⁹ Participants in a FICA alternative plan who also qualify for Social Security through other work no longer face those reductions.

If You’re a Student, You May Not Belong in the Plan

Federal law exempts student employees from FICA tax when education is the primary purpose of the relationship, not employment.¹⁰ The IRS uses a safe harbor: you generally qualify if you’re at least a half-time student, undergraduate or graduate, at the school employing you, and your normal work schedule is under 40 hours a week. Working 40 or more hours weekly disqualifies you no matter your course load.¹¹ The 1990 statute that created the FICA alternative requirement also expressly excluded students working for the school they attend.²

If you think you’ve been enrolled by mistake, raise it with HR. Fixing the classification affects your take-home pay now and your Social Security credits later.

1
eCFR. 26 CFR 31.3121(b)(7)-2 – Service by Employees Who Are Not Qualified Participants
2
Internal Revenue Service. Revenue Procedure 91-40
3
Internal Revenue Service. Topic No. 751 – Social Security and Medicare Withholding Rates
4
Social Security Administration. Contribution and Benefit Base
5
Internal Revenue Service. Notice 2025-67 – 2026 Amounts Relating to Retirement Plans and IRAs
6
Internal Revenue Service. Retirement Topics – Exceptions to Tax on Early Distributions
7
Internal Revenue Service. Retirement Plan and IRA Required Minimum Distributions FAQs
8
Social Security Administration. Program Explainer – Windfall Elimination Provision
9
Social Security Administration. Social Security Fairness Act – Windfall Elimination Provision and Government Pension Offset
10
Internal Revenue Service. Student Exception to FICA Tax
11
Internal Revenue Service. Revenue Procedure 2005-11