Teacher Pensions Compared: TRS vs CalSTRS vs FRS

Understanding your pension formula is a critical step in retirement planning. While the basic structure is similar across states, a multiplier times your years of service times your salary, the specific numbers and rules vary significantly. These differences directly affect your future monthly benefit. This article compares the core pension formulas for teachers in Texas (TRS), California (CalSTRS), and Florida (FRS), and highlights the features you need to know.

How a pension formula actually works

A defined benefit pension, like those offered by TRS, CalSTRS, and FRS, calculates your lifetime retirement benefit using a set formula with three main components: the multiplier (or benefit factor), your total years of service credit, and your average salary base. The multiplier is a percentage that determines how much of your average salary you earn per year of work. For example, a 2% multiplier means you earn 2% of your average salary for each year you teach. That amount is multiplied by your total years of service, and the result is applied to your average salary, which is typically calculated from your highest-earning years.

Texas TRS at a glance

The Teacher Retirement System of Texas (TRS) uses a straightforward formula: 2.3% multiplied by years of service credit, multiplied by your average salary. For most current members, the average salary is based on the highest five years of earnings (the highest three years applies only to grandfathered members). Teachers vest after 5 years of service. Normal retirement follows the "Rule of 80," where your age plus years of service equal at least 80, with a minimum age of 62 for those who first joined on or after September 1, 2014.

A critical point for Texas educators is that most school districts do not participate in Social Security, so TRS teachers generally do not pay into Social Security on their teaching wages. That makes the TRS pension the primary source of guaranteed retirement income for many, alongside personal savings. Employee contributions are 8.25% for fiscal year 2024-25. TRS does not provide an automatic annual cost-of-living adjustment (COLA); Proposition 9 (2023) delivered the first statewide benefit increase in roughly two decades, paid beginning January 2024, but the absence of a recurring COLA means a fixed benefit can lose purchasing power over a long retirement.

California CalSTRS at a glance

The California State Teachers' Retirement System (CalSTRS) has two benefit tiers split by hire date, and the difference lives in the age factor. For members hired before January 1, 2013, the plan is often called "2% at 60." The base age factor is 2% at age 60 and rises to a maximum of 2.4% at age 63. Final compensation for this tier is the highest average over 12 consecutive months.

For members hired on or after January 1, 2013 (under the Public Employees' Pension Reform Act, or PEPRA), the plan is "2% at 62." The base age factor is 2% at age 62, increasing to a maximum of 2.4% at age 65, and decreasing to as low as 1.16% at age 55. Final compensation for this tier uses the highest average over 36 consecutive months. For both tiers, the formula is the age factor times years of service times final compensation, and vesting requires 5 years.

Like Texas, CalSTRS members do not participate in Social Security on their CalSTRS-covered work. Employee contributions are 10.205% for the "2% at 62" tier and 10.25% for the "2% at 60" tier (2024-25). CalSTRS provides a 2% simple (non-compounding) COLA, backed by a Supplemental Benefit Maintenance Account designed to keep purchasing power at or above 85% of the benefit's original value.

Florida FRS at a glance

The Florida Retirement System (FRS) Pension Plan, Regular Class, also tiers by hire date, which affects both the salary base and the vesting period. The benefit formula is 1.60% multiplied by years of service, multiplied by your average final compensation (AFC). For members hired before July 1, 2011, the AFC is based on the highest 5 years; for those hired on or after July 1, 2011, it is the highest 8 years. Vesting is 6 years for pre-2011 hires and 8 years for post-2011 hires. Normal retirement for post-2011 hires is age 65 with 8 years of service, or 33 years of service at any age.

A major distinction for Florida is that FRS members do participate in Social Security (and Medicare) in addition to the pension. Employee contributions to the pension plan are a flat 3%. The COLA is bifurcated: a 3% annual adjustment applies only to service credit earned before July 1, 2011, while service earned after that date receives no COLA. Florida also offers a defined-contribution alternative, the FRS Investment Plan, which vests in just 1 year compared with the 8-year pension vesting.

Side-by-side comparison

What these differences mean for your retirement

The multiplier is the most direct lever on your benefit. A Texas teacher with a flat 2.3% multiplier earns a higher percentage per year than a Florida teacher at 1.60%, assuming the same salary and service. California's age-based factor adds a timing variable: a post-2013 CalSTRS member retiring at 62 gets a 2% factor, but waiting until 65 raises it to 2.4%, which can meaningfully increase the final benefit.

The salary base matters too. Using the highest 5 years (Texas, and pre-2011 Florida) generally yields a higher average than the highest 8 years (post-2011 Florida), because it captures peak earnings with fewer lower-earning years mixed in.

The Social Security gap is the starkest difference: teachers in Texas and California generally do not earn Social Security through their teaching work, so the pension is their main source of guaranteed lifetime income. Florida teachers, by contrast, receive a Social Security benefit on top of their FRS pension. Finally, COLA provisions shape long-term security. No automatic COLA in Texas, and none on post-2011 Florida service, means a fixed benefit can erode with inflation over decades. California's 2% simple COLA offers some protection, though it may lag in high-inflation years.