If you see a line labeled PERA on your paycheck, it’s a mandatory contribution to your state’s Public Employees’ Retirement Association, a pension plan for people who work for state agencies, public schools, counties, or municipalities. Colorado, Minnesota, and New Mexico each run their own PERA system. The money comes out before taxes, you can’t opt out, and in exchange the system promises you a monthly check for life once you retire and meet the service requirements.
PERA is a defined benefit plan. That means your eventual retirement check is set by a formula based on your salary and years of service, not by how your investments performed. A board of investment officers manages the pooled contributions from thousands of members to fund those promised benefits, and each association operates as a legal trust with a fiduciary duty to its members.1Justia. Colorado Revised Statutes Section 24-51-101 – Definitions
How Much Is Coming Out
The percentage is set by state law and depends on which system you’re in and which division you belong to. In Colorado, employee contribution rates effective January 2026 are 11% of gross pay for the State, School, DPS, and Judicial divisions, 9% for Local Government, and 13% for safety officers.2Colorado Public Employees’ Retirement Association. Colorado PERA Contribution Rates A Colorado state employee earning $5,000 a month would see a $550 PERA deduction. Minnesota’s General Employee plan runs around 6.5%, with higher rates for police, fire, and correctional plans. New Mexico PERA rates vary by salary level and plan tier.
The contribution is pre-tax. If you earn $60,000 a year and 11% goes to PERA, your taxable income drops by $6,600 for the year, which is roughly $1,452 less in federal tax for someone in the 22% bracket. You’ll owe income tax on the money when it comes back to you as a pension, but the deferral lets the full amount work in the meantime.
What Your Employer Pays on Top
Your employer contributes a separate amount that doesn’t show up on your stub. In Colorado’s State Division, the total employer contribution for 2026 is 21.65% of payroll; the Judicial Division’s rate reaches 24.91%.3Colorado PERA. Employer Contribution Rates It’s part of your total compensation even though you never see it as a line item.
Why There’s No Social Security Deduction
If PERA is on your paycheck but Social Security (OASDI) isn’t, that’s by design. Public employees covered by a qualifying retirement system like PERA are generally exempt from the 6.2% Social Security tax unless their state has separately opted their position into coverage.4Internal Revenue Service. Topic No. 751, Social Security and Medicare Withholding Rates States bring specific groups of workers under Social Security through what’s called a Section 218 Agreement, and while every state has one, they don’t automatically cover every employee.5Social Security Administration. Section 218 Agreements – State and Local Government Employers If your position wasn’t swept in, PERA is standing in for Social Security as your primary retirement program.
Medicare is a different story. Federal law has required Medicare coverage for all state and local government employees hired after March 31, 1986, regardless of whether they pay into Social Security or a public pension.6Social Security Administration. Mandatory Medicare Coverage So expect to see the 1.45% Medicare tax on your stub next to the PERA line.
WEP and GPO Are Gone
For decades, two federal rules reduced Social Security benefits for people who also earned a government pension. The Windfall Elimination Provision cut Social Security retirement checks for workers who split careers between PERA-covered employment and private jobs where they paid Social Security tax, and the Government Pension Offset cut spousal and survivor benefits by two-thirds of the government pension amount. The Social Security Fairness Act, signed January 5, 2025, repealed both. December 2023 was the last month either applied; the Social Security Administration began adjusting payments in February 2025 and issued retroactive lump sums covering the increase back to January 2024.7Social Security Administration. Social Security Fairness Act – Windfall Elimination Provision and Government Pension Offset If you’ve worked both public and private jobs, this matters: the old pension-based reductions no longer apply.
What You Get in Return
The deduction buys you two things: an account balance made up of your contributions, and, once you’ve put in enough years, the right to a lifetime monthly benefit.
Vesting
Vesting is when you lock in the right to a pension. Your own contributions always belong to you, but the monthly pension requires minimum service:
- Colorado PERA: five years of service credit across all divisions.8Colorado PERA. Leaving Employment
- Minnesota PERA Coordinated Plan: three years of service for full vesting.
- Minnesota Police and Fire and Correctional plans: graduated vesting starting at 50% after five years and reaching 100% after ten.9Minnesota Public Employees Retirement Association. Pension Plans
How the Pension Is Calculated
The Colorado formula for a full-service, single-life benefit is:
Highest average salary × 2.5% × years of service = monthly benefit
Highest average salary is usually based on your top-earning consecutive period, often three to five years depending on the plan and hire date. A Colorado member with 25 years of service and a highest average salary of $6,000 a month would get $6,000 × 2.5% × 25 = $3,750 a month. The multiplier and averaging period differ between states and divisions, and members hired after certain dates may fall into different tiers with modified formulas.
If You Leave Before Retirement
When you separate from a PERA employer, your options depend on whether you’ve vested.
Any departing member can take a refund of their own contributions plus interest. Colorado credits interest at a rate set by the PERA Board, currently 3%, a rate held steady since 2009.10Colorado PERA. Interest on Member Accounts Colorado members who have reached retirement eligibility also receive a 100% employer match on top of their account balance when they take a refund, while those who leave before eligibility receive no match or a partial match depending on the plan.11Colorado PERA. Member Contribution Interest Rate
Taking the refund as cash is expensive. The plan must withhold 20% for federal income tax, and anyone under age 59½ faces a 10% early withdrawal penalty from the IRS unless an exception applies.12Colorado PERA 401(k). Special Tax Notice About Your Withdrawal A direct rollover into an IRA or a new employer’s 401(k) avoids both hits and keeps the money tax-deferred.
If you’ve vested and reached your plan’s minimum retirement age, you can skip the refund entirely and elect a monthly pension for life. Most PERA systems also let you choose a reduced benefit that continues paying a spouse or other beneficiary after you die.
One Other Thing Worth Knowing
PERA benefits are marital property and can be divided in a divorce, but the system doesn’t accept the Qualified Domestic Relations Order used for private-sector 401(k)s. Colorado PERA requires a Domestic Relations Order drafted to its specifications, and getting the language right the first time is worth hiring an attorney familiar with governmental pensions.13Colorado PERA. PERA Benefits and Divorce
Otherwise, the short version is this: the PERA deduction is forced retirement savings into a pension that will pay you for life, your employer is putting in considerably more alongside it, and in most cases it’s replacing Social Security rather than stacking on top of it. Keep records of your service dates, especially if you change agencies, because the years are what unlock the benefit.