Final average salary is the pay figure your pension formula multiplies. It is rarely your last salary. Instead, each plan averages a set number of your highest-paid years, and that choice can move your pension by several hundred dollars a month.
How many years are averaged
The shorter the period, the higher the average, because your best years usually come at the end of your career. Plans fall into a few groups.
| Averaging period | Examples |
|---|---|
| Highest 12 months | CalSTRS 2% at 60 members with 25 or more years |
| Highest 3 years (36 months) | CalSTRS, CalPERS PEPRA, NYSTRS |
| Highest 4 years | Illinois TRS Tier 1 (best 4 consecutive of the last 10) |
| Highest 5 years | Texas TRS, STRS Ohio, Florida FRS Tier 1 |
| Highest 8 years | Florida FRS Tier 2, Illinois TRS Tier 2 (best 8 consecutive of the last 10) |
Some plans require the years to be consecutive and some do not. Texas TRS, for example, uses your five highest annual salaries wherever they fall, which helps someone who took a lower-paid role late in their career.
Why the averaging period matters
Picture a teacher whose salary rises 3% a year and ends at $80,000. A three-year average comes to about $77,700. A five-year average is about $75,500, and an eight-year average is about $72,300. With 30 years at 2%, those averages produce pensions of roughly $3,885, $3,775 and $3,615 a month. Same career, about $270 a month apart, purely because of the averaging rule.
That is also why the last years before retirement carry so much weight. A promotion to department head or assistant principal three years before you retire can raise your pension more than a decade of earlier raises.
What pay counts
Plans count your base salary and usually stipends written into your contract, such as coaching or department chair pay. Many exclude or cap overtime, one-time bonuses, unused sick leave payouts, car allowances and pay for work outside the normal school year. Rules differ a lot, so check your handbook’s definition of “creditable compensation” before counting on a stipend.
Anti-spiking rules
Because a short averaging period rewards a late jump in pay, most plans limit it. Common rules include:
- Raise caps. Pay increases above a set percentage in the final years may not count in full, or the employer must pay the extra cost.
- Annual salary caps. CalPERS PEPRA and Illinois TRS Tier 2 cap the salary that can count each year, and the cap rises with inflation.
- Consecutive-year rules. Requiring consecutive years stops members from picking scattered peaks.
None of these rules stop normal raises or a genuine promotion. They target large increases granted mainly to lift a pension.
Using it in a decision
If you are deciding whether to work one or two more years, look at how your salary average would change, not only your service. A final year at a higher step can replace an older, lower year in the average, so the pension grows from both directions. Run the pension estimate twice, once with today’s average and once with the higher figure you expect, to see the full effect.