Updated October 30, 2026. Quick answer: The Teachers’ Retirement System of Oklahoma pays a member whose first creditable service is on or after November 1, 2011 an annuity of 2% of the average of the five consecutive highest-paid years for each year of creditable service. Computed for 25 years and a $60,000 average, that is $30,000 a year (computed), or $2,500 a month (computed), once the member is 65, or 60 with age and service totaling 90. Retiring earlier uses a TRS reduction table that this page links and does not retype. Enter your own numbers below; the figure is the standard annuity, before any payment option.
Calculate your Oklahoma TRS annuity
This page applies the standard retirement formula in the Oklahoma Statutes to your service, age and average pay. It runs on this page and sends nothing anywhere. It covers a member whose first creditable service is on or after November 1, 2011, a group TRS describes this way: “Those who joined TRS on or after 11/1/11 may retire at age 65 or when the member’s age is at least 60 and years of creditable service total at least 90 points (i.e., age 60 + 30 service years = 90 points).” Pick the start-date group, enter your service credit from your TRS record in years and months, and the age you will be on your retirement date.
For a decision, use TRS itself: its member portal and counselors price a retirement date, starting from oklahoma.gov/trs. This page is the published formula, shown so you can see the arithmetic.
The formula, as the statute and the handbook print it
Section 17-116.2 of Title 70 sets the allowance for a member who joined after the mid-1990s: “if the member becomes a member after June 30, 1995, and was not eligible to become a member prior to July 1, 1995, in an amount equal to two percent (2%) of the member’s average salary upon which member contributions were made, multiplied by the number of the member’s years of creditable service”. The TRS handbook puts it in one line: “Benefits are calculated using a defined retirement formula: 2% x (service years) x (final average salary) ÷ 12 = monthly benefit.” The calculator shows the yearly amount and the monthly amount.
The average is not your final salary. Section 17-101 defines it, for a member who joined after June 30, 1992, as “for those members who join the System after June 30, 1992, shall mean the average of the salaries for five (5) consecutive years on which the highest contributions to the Teachers’ Retirement System of Oklahoma were paid”. The handbook repeats it: “The highest consecutive five contributory salaries are used to calculate their benefit in the retirement formula.” Section 17-101 limits the average with pre-1995 salary caps, and its definition of the maximum compensation level counts “the full amount of regular annual compensation for service authorized and performed on or after July 1, 2007” for the schedule it quotes, so for a member whose service all falls after November 1, 2011 the calculator uses the salary you enter, with no cap.
Worked example, calculated for 25 years of creditable service and a $60,000 average: 2% x 25 = 50% of $60,000 = $30,000 a year (computed), $2,500 a month (computed). At 10 years and the same average the annuity is $12,000 a year (computed).
When the annuity is not reduced
Section 17-105 sets the retirement date for the group: “Any person who becomes a member on or after November 1, 2011, who attains the age of sixty-five (65) years or who reaches a normal retirement date pursuant to subparagraph d of paragraph 22 of Section 17-101 of this title having attained a minimum age of sixty (60) years may be retired upon proper application for retirement”. The handbook turns that into points: age 60 or older, with age and years of creditable service adding to at least 90. The calculator adds age and service in months, so 59 years and 11 months plus 30 years does not count as 90.
A member must also be vested. Section 17-105 says a member who joined “after July 1, 1967, through October 31, 2017, shall be employed by the public schools, state colleges, or universities of Oklahoma for a minimum of five (5) years and be a contributing member of the Teachers’ Retirement System of Oklahoma for a minimum of five (5) years to qualify for monthly retirement benefits”, while one who joined “on or after November 1, 2017, shall be employed by the public schools, state colleges or universities of Oklahoma for a minimum of seven (7) years and be a contributing member of the Teachers’ Retirement System of Oklahoma for a minimum of seven (7) years to qualify for monthly retirement benefits”. That is why the calculator asks which group you are in. The handbook adds that vesting counts membership service, and that unused sick leave and purchased service may not count as vested service (purchased adjunct higher-education service is an exception). The calculator tests vesting against the service you enter, so a member whose total includes sick leave or purchased service should confirm vesting with TRS.
Years of service needed at each age to reach 90 points, and the annuity that service buys at a $60,000 average:
| Age at retirement | Years of service needed for 90 points | Annual annuity | Monthly annuity |
|---|---|---|---|
| 60 | 30 (computed) | $36,000 (computed) | $3,000 (computed) |
| 61 | 29 (computed) | $34,800 (computed) | $2,900 (computed) |
| 62 | 28 (computed) | $33,600 (computed) | $2,800 (computed) |
| 63 | 27 (computed) | $32,400 (computed) | $2,700 (computed) |
| 64 | 26 (computed) | $31,200 (computed) | $2,600 (computed) |
From age 65 the points test no longer matters: a vested member can retire at 65 with any vested service.
Retiring earlier: why this page prints no figure
The handbook says “Reduced benefits are available for members who have not reached full retirement eligibility under regular retirement. Reduction factors vary depending on age and date of membership when joining TRS”, with a separate factor table for members who joined after October 31, 2011 that begins at age 60. Section 17-105 opens with “Any member who has attained age fifty-five (55) or who has completed thirty (30) years of creditable service”, but its last sentence gives a member who joined on or after November 1, 2011 the age 65, or age 60 with 90 points, test, so this page does not say whether a member of this group can retire under 60. Ask TRS. The factors are a table by age in the handbook, at the TRS member handbook. This page does not retype that table, so for a member who has not reached 65, or 60 with 90 points, it shows the formula amount before reduction and says the reduction is TRS’s.
Worked reference, calculated for 25 years and a $60,000 average: the amount before any age reduction is $30,000 a year (computed). Multiply it by the handbook factor for your age to read the reduced annuity.
What to do next
1. Get TRS’s own number. The member portal and the handbook above are the system’s figures; this page is the printed formula.
2. The rest of the TRS decisions. Payment options, the cost-of-living increase and buying service are on the Oklahoma TRS retirement decisions page, and the latest increase is on the Oklahoma TRS COLA page.
3. Tax. Oklahoma’s treatment of pension income is on the Oklahoma pension tax page. Federal tax applies too: “The taxable part of your pension or annuity payments is generally subject to federal income tax withholding.” The withholding form is described on the IRS page for Form W-4P: “so your payer can withhold the correct amount of federal income tax from your periodic pension, annuity”.
Where this calculator stops
It prices one slice of TRS: a member whose first creditable service is on or after November 1, 2011. Members who joined earlier are under other ages, point tests and averaging periods, and the calculator does not price them. It leaves out the reduction for retiring before the unreduced date (the handbook table), disability and survivor benefits, cost-of-living increases, purchased service and its cost (the pension buyback calculator covers purchases in general), and the rules for working after retirement. It reads service and age as you enter them; TRS decides how part years are credited. One reading to know: the opening words of Section 17-116.2(A)(2) are written for a member with no higher education service on or after July 1, 1995, and the calculator applies the 2% to every member of the group, so a member who worked for a state higher education institution should confirm the figure with TRS.
How it was checked: a second, independent engine (exact fractions, with the percentage, ages, points and vesting years read from the archived statute text) agreed with this page’s engine on 300,000 random combinations of group, service, age and pay, and the shipped script was driven in a browser on a grid of cases against both. The rules were read from Title 70 of the Oklahoma Statutes and the TRS member handbook.
Common mistakes
- Using your final salary. The statute averages your five consecutive highest-paid years.
- Expecting a full annuity at 60. A member of this group needs age 65, or age 60 with age and service totaling 90.
- Applying the vesting years of the wrong group. Seven years apply to a member who joined on or after November 1, 2017.
- Assuming a reduced annuity is a fixed percentage. TRS reduces by a table that depends on age and start date.
Related: Oklahoma TRS retirement decisions, public pension decisions by system, single life versus joint and survivor, and Oklahoma retirement taxes.
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Answer againSources
- Oklahoma Statutes, Title 70, Sections 17-101, 17-105 and 17-116.2 (Teachers’ Retirement System of Oklahoma): https://www.oklegislature.gov/OK_Statutes/CompleteTitles/os70.rtf
- Teachers’ Retirement System of Oklahoma, Member Handbook (FY2027): https://oklahoma.gov/content/dam/ok/en/trs/documents/FY2027.Member.Handbook.ADA.pdf
- Teachers’ Retirement System of Oklahoma, home page: https://oklahoma.gov/trs.html
- IRS, Topic no. 410, Pensions and annuities: https://www.irs.gov/taxtopics/tc410
- IRS, About Form W-4P, Withholding Certificate for Pension or Annuity Payments: https://www.irs.gov/forms-pubs/about-form-w-4p
Read from the system publications linked above on October 30, 2026. General information, not legal or tax advice, and not an estimate from the retirement system. Your own facts decide the outcome, and your retirement system, your plan administrator or a benefits advisor is the right place to confirm anything consequential.