Bottom line
The basic annual standard annuity is service credit × average highest salary × 2.3%, before early-retirement or payment-option reductions.Key facts
- TRS uses a 2.3% multiplier
- Most members use five highest annual salaries
- Divide the annual result by 12 for a monthly estimate
The standard annuity formula
TRS Texas states the basic formula as years of service credit multiplied by average highest salaries multiplied by 2.3 percent. A member with 25 years and a $70,000 final average salary would have an illustrative annual standard annuity of $40,250, or about $3,354 per month.
This is a gross estimate. It does not subtract federal withholding, insurance premiums or other deductions, and it does not include a reduction for retiring early or choosing an optional survivor form of payment.
Which salaries are averaged
Most current members use the average of their five highest annual creditable salaries. Certain grandfathered members use three highest annual salaries. Creditable compensation, not simply the number printed on an employment contract, controls the calculation.
Salary growth near retirement can therefore change the estimate, but only to the extent the compensation is creditable and falls within the years used by TRS.
Why the official estimate may differ
TRS has the authoritative service record, membership category and salary history. Differences commonly come from partial service years, refunded service, grandfathered rules, an early-age reduction or a survivor option.
Use our calculator for scenario planning, then compare the result with the personalized calculator in MyTRS before making a retirement decision.
The formula has three inputs, but the inputs are not simple
The standard annuity starts with service credit multiplied by 2.3 percent and then multiplied by the applicable average of creditable salaries. The multiplier is straightforward; most estimate differences come from the service and salary records or from reductions applied after the formula.
TRS membership tiers use either an average of three highest annual salaries or five highest annual salaries. Do not assume that grandfathered status alone answers the salary-period question. Use the tier information maintained by TRS and the compensation that TRS recognizes as creditable.
| Average salary | Service | Replacement percentage | Annual estimate | Monthly estimate |
|---|---|---|---|---|
| $60,000 | 20 years | 46.0% | $27,600 | $2,300 |
| $75,000 | 25 years | 57.5% | $43,125 | $3,594 |
| $90,000 | 30 years | 69.0% | $62,100 | $5,175 |
Three-year versus five-year salary averaging
A shorter averaging period can produce a larger benefit when salary rises near retirement, but only if the member's tier uses that period and the pay is creditable. An employment contract, stipend or one-time payment should not automatically be treated as pensionable compensation.
For planning, calculate both a conservative average based on existing TRS records and a scenario using expected future creditable salaries. Then compare the result with the personalized MyTRS estimate. If the figures differ, identify the exact salary year or service entry causing the gap rather than adjusting the multiplier.
How an additional year changes the estimate
At a $75,000 average salary, one full year of additional service adds about $1,725 to the annual standard annuity before other changes: $75,000 × 2.3 percent. The actual gain can be larger when the new salary replaces a lower year in the average or when waiting removes an early-age reduction.
Compare the incremental annual benefit with the earnings, contributions and time required to work the additional period. This is not a simple break-even calculation because the pension is paid for life and may support a survivor benefit. Still, isolating each component makes the decision easier to audit.
What the standard formula leaves out
The formula result is not the amount deposited into a bank account. Early-age reductions, an optional survivor form, federal withholding, insurance premiums and other deductions can lower the payment. A disability benefit, partial lump-sum option or special service history can require a different calculation.
Use the standard formula for scenario planning, not as a filing quote. Request official estimates using the same retirement date and payment option so the comparisons are consistent. Keep the unreduced standard annuity visible because it helps explain every later adjustment.
Before you make a decision
- Identify whether the tier uses three or five salary years.
- Reconcile service credit with the annual statement.
- Calculate the unreduced standard annuity first.
- Add the exact early-age or payment-option reduction separately.
- Compare the result with a dated MyTRS estimate.
Frequently asked questions
What is the Texas TRS multiplier?
The standard service-retirement formula uses 2.3 percent for each year of service credit.
Does TRS use my final salary?
TRS uses an average of the applicable highest annual creditable salaries, not simply the last contract salary. The number of years in the average depends on the member's tier.
Is the calculator result before taxes?
Yes. A basic standard-annuity estimate is gross and does not subtract withholding, insurance or other deductions.
Why is MyTRS different from my hand calculation?
Common causes include partial service, a three-year versus five-year salary average, refunded or purchased service, an early-age reduction and a survivor payment option.
Official sources
Sources were reviewed on August 19, 2026. Rules and member records maintained by the retirement system control.
TRS Texas — Understand your benefitsOfficial source ↗TRS Texas — Benefit calculator FAQOfficial source ↗This article provides general educational information. It is not a benefit determination or financial, tax, or legal advice. Confirm account-specific information with the retirement system.