Substitute teaching may count toward a Texas TRS pension, but working enough days is only the first step. You need eligible service, employer verification, TRS approval and payment of the required purchase cost.
Quick answer: TRS says substitute service of at least 90 actual workdays in one school year may qualify for purchase. Days from more than one district can be combined within that same year. Use TRS 22S to verify the work and meet both verification and payment deadlines. Credit is not automatic or free.
Already retired and asking how much you can substitute without affecting your pension? That is a different question. Read the Texas TRS return-to-work rules. This article concerns buying credit for eligible service performed before retirement.
Does substitute teaching count toward Texas TRS?
The TRS purchase chart identifies substitute service as a purchase category. Treat it as an opportunity to establish credit, rather than a promise that every year of substitute work already appears in your account.
Start by making a list of school years, employers and actual days worked. Keep each year separate. A work-history total spanning several years does not establish that any particular year meets the requirement.
| Work history | What the day count tells you | What remains to be checked |
|---|---|---|
| 95 actual substitute days in one school year | Exceeds the 90-day minimum | Eligible work, verification, deadlines and cost |
| 55 days in one district and 40 in another, same year | Combined count is 95 days | Verification from the relevant employers |
| 60 days one year and 35 the next | Cannot combine these years to reach 90 for one year | Whether either year qualifies under the applicable rules |
| 90 calendar days since starting | Does not establish 90 actual workdays | Actual substitute service records |
Takeaway: Count qualifying work by school year. Do not substitute elapsed time for recorded days of work.
Why 90 days does not automatically create a pension year
TRS 22S says TRS determines whether the service is eligible for purchase. Submission of the form is not a guarantee of credit.
A useful way to organize the process is to track four separate statuses: documented, submitted, approved and paid. Do not mark a year as part of your pension plan merely because the first two are complete.
If the current record looks wrong, distinguish this purchase from correcting missing membership service. If an earlier refund canceled credited service, use the withdrawn-service reinstatement guide instead. Different problems require different evidence and cost rules.
How to prepare TRS 22S
The official form is completed by an authorized reporting official at the district or open-enrollment charter school where the substitute service occurred. It asks for the school year, days, position and gross salary. Verification must come from records created at or near the time of service; a recollection-based affidavit is insufficient.
The employer returns the completed form to you, and you submit it to TRS. Follow the full current form, including its signature and certification requirements. Do not send an unsigned table of estimated days and assume it replaces the form.
| Step | Your task | Keep a copy of |
|---|---|---|
| Identify employers | List each school year and relevant district | Work-history worksheet |
| Request verification | Send the official form to the appropriate reporting office | Request and employer response |
| Check completeness | Review school year, days, salary and certification | Completed TRS 22S |
| Submit to TRS | Follow the current submission instructions | Submission and receipt evidence |
| Review TRS's decision | Resolve discrepancies and obtain the cost statement | Approval and quote |
| Complete the purchase | Meet the payment conditions TRS gives you | Payment and final credit confirmation |
For multiple districts, ask each reporting office to verify its own records and ask TRS how to assemble the submissions. Do not ask one employer to certify another employer's history from memory.
Watch the verification deadline and the payment deadline
These are separate requirements. The TRS unreported-service guidance states that qualifying service on or after September 1, 2011 must be verified by August 31 of the fifth year following the year of service, subject to the earlier date benefits become payable. Older service had a separate August 31, 2016 deadline. Finding an old payslip does not restart the clock.
TRS 22S also says verification cannot be accepted after retirement once the first annuity has been issued. The purchase chart supplies a retirement/application-month deadline, while TRS separately requires full payment before the first annuity is issued or due. Read those conditions together.
| Requirement | What to confirm with TRS |
|---|---|
| Employer verification | The actual receipt deadline for each school year |
| Approval | Whether the submitted service has been accepted as eligible |
| Purchase completion | The deadline shown in your case and how the first-benefit constraint applies |
| Final posting | That purchased credit appears in the record used for your retirement |
Takeaway: Do not wait until the first pension deposit to deal with a substitute-service purchase. Ask for a written deadline calculation while there is still time to act.
How much does substitute service credit cost?
TRS bases this purchase on the actuarial present value of the additional benefit associated with the credit, using its adopted tables. There is no single price per substitute day that applies to everyone.
Get a TRS cost statement. Do not reuse the military-service or withdrawn-service pricing formula, and do not assume the purchase equals missed payroll deductions.
Your comparison needs more than the price. Request estimates with and without the eligible purchase using the same retirement date and payment option. Our TRS estimate checklist explains how to keep those comparisons consistent.
Is buying the year worth it?
Here is an intentionally hypothetical screening calculation. Suppose an actual quote were $12,000 and comparable estimates showed an additional $125 a month:
| Item | Hypothetical amount |
|---|---|
| Purchase cost | $12,000 |
| Monthly pension increase | $125 |
| Simple recovery period | 96 months |
| Equivalent period | 8 years |
The arithmetic is $12,000 ÷ $125. Neither figure is a published TRS price or benefit promise. This simple calculation ignores taxes, the time value of money, payment timing, survivor elections and future benefit changes.
Use it to frame questions, not to decide automatically. Ask whether the purchase changes eligibility, only the benefit amount, or both in your case. An earlier retirement date could create a separate financial comparison; so could needing the cash for other essential expenses.
Under Government Code Section 823.002, service in one school year cannot produce more than one service year. Do not assume work for two employers creates two purchasable years.
Before paying the quote
Check the accepted school years, the amount due, the payment deadline and how the credit will affect your official estimates. Preserve the cost statement and ask how TRS will confirm completion.
If retirement is close, coordinate this with the application and first-payment timeline. A purchase enquiry is not itself a completed service purchase or a retirement application.
Frequently asked questions
Is substitute service credit automatic after 90 workdays?
No. You still need eligibility review, verification and payment of the required purchase cost.
Can I combine days from two school districts?
TRS permits eligible substitute days from more than one district to meet the minimum within the same school year. Have the relevant employers verify their records.
Can I combine days from different school years?
Not to satisfy the 90-day minimum for a single school year. Keep each year's actual days separate.
Who completes TRS 22S?
The employer's authorized reporting official completes the service verification. Follow the full official form and its certification requirements.
Is there a fixed purchase price?
No universal substitute-service price is published in the purchase chart. Request the cost statement for your eligible service.
Can I finish everything after my first pension payment?
Do not assume so. TRS imposes verification and payment restrictions tied to retirement and the first annuity. Resolve the timing directly with TRS before benefits become payable.
Key takeaways
Document actual substitute days by school year, use the correct form, meet the receipt deadline and obtain an individualized price. Compare the proposed credit with equivalent pension estimates before paying.
Official sources
- TRS Service Credit Purchase Chart, substitute-service row.
- TRS 22S: Verification of Substitute Service and Salary, both pages and member instructions.
- TRS: Unreported Service and Compensation, verification and first-benefit constraints.
- TRS: Purchasing Service Credit, purchase-category overview.
- Texas Government Code, Chapter 823, annual-credit limitation in Section 823.002.
