Engineering License from Illinois to Oklahoma: Does It Transfer? (2026)
Last verified: 2026-07-21 · source: Oklahoma State Board of Licensure for Professional Engineers and Surveyors ↗
A PE license transfers from Illinois to Oklahoma by endorsement — there is no automatic reciprocity, but you do not start over. Apply to the Oklahoma State Board of Licensure for Professional Engineers and Surveyors, verify your Illinois license, and meet Oklahoma's endorsement requirements. FE and PE exam results transfer through your NCEES Record and are not retaken; Oklahoma requires no state jurisprudence exam for a base PE comity license (only the P.E./S.E. structural-engineer designation requires additional NCEES structural examinations).
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Verdict
Licensure by endorsement
Oklahoma grants PE licensure by comity, so a Professional Engineer licensed in Illinois does not start over — but does file a full Oklahoma application. Your Illinois license, ABET degree, qualifying experience, and FE and PE results reach the Oklahoma State Board of Licensure for Professional Engineers and Surveyors through your NCEES Record; the board's task is to confirm they meet Oklahoma's practice act, not to re-test you. FE and PE exam results transfer through your NCEES Record and are not retaken; Oklahoma requires no state jurisprudence exam for a base PE comity license (only the P.E./S.E. structural-engineer designation requires additional NCEES structural examinations). Two things govern your timeline: keeping your Illinois license active and unencumbered while the Oklahoma application is pending, and clearing any Oklahoma-specific exam or statutes review before the license issues.
What changes, Illinois → Oklahoma
| Illinois (current) | Oklahoma (destination) | |
|---|---|---|
| Application fee | $100 ($100 Professional Engineer license application fee (68 Ill. Adm. Code 1380.275; the same single application fee applies to endorsement); renewal is $30 per year. Request that NCEES transmit your Record to Illinois — NCEES charges $175 first board / $100 each additional, paid separately) | $250 (Comity (Engineer) application fee per Oklahoma Administrative Code 245:2-1-18 (single fee; no separate certificate fee in the schedule). Transmitting an NCEES Record costs $175 for the first board and $100 for each additional board, paid separately to NCEES.) |
| Processing time | IDFPR does not publish a guaranteed endorsement turnaround; the board's PE FAQ states that using an NCEES Record may shorten processing time | No published comity turnaround; comity applications meeting Model Law criteria are reviewed by the Executive Director or the board's designee. |
| Licensing authority | Illinois Department of Financial and Professional Regulation (IDFPR), Division of Professional Regulation — Board of Professional Engineers | Oklahoma State Board of Licensure for Professional Engineers and Surveyors |
The destination column is what you must satisfy — Oklahoma sets the rules for this move.
Step by step
- Confirm Oklahoma's current requirements on the Oklahoma State Board of Licensure for Professional Engineers and Surveyors website (linked below) — rules change.
- Submit the endorsement application to the Oklahoma State Board of Licensure for Professional Engineers and Surveyors (application linked below).
- Arrange license verification from your current state via the verification system.
- Hold an active PE license in good standing in at least one U.S. jurisdiction.
- Submit an NCEES Record (Form A comity path); non-NCEES-Record holders (Form B) must supply Verification of Licensure and Experience Verification forms.
- Hold an EAC/ABET-accredited engineering degree with qualifying progressive experience (commonly four years).
- Meet NCEES Model Law Engineer criteria or other standards set by board statute, rule and policy (reviewed by the Executive Director or the board's designee).
- Pay the fees ($250 (Comity (Engineer) application fee per Oklahoma Administrative Code 245:2-1-18 (single fee; no separate certificate fee in the schedule). Transmitting an NCEES Record costs $175 for the first board and $100 for each additional board, paid separately to NCEES.)) and allow No published comity turnaround; comity applications meeting Model Law criteria are reviewed by the Executive Director or the board's designee..
Official links
Related guides
Frequently asked questions
Does Oklahoma accept a Illinois PE license?
A PE license transfers from Illinois to Oklahoma by endorsement — there is no automatic reciprocity, but you do not start over. Apply to the Oklahoma State Board of Licensure for Professional Engineers and Surveyors, verify your Illinois license, and meet Oklahoma's endorsement requirements. FE and PE exam results transfer through your NCEES Record and are not retaken; Oklahoma requires no state jurisprudence exam for a base PE comity license (only the P.E./S.E. structural-engineer designation requires additional NCEES structural examinations).
Do I retake the FE or PE exam moving from Illinois to Oklahoma?
FE and PE exam results transfer through your NCEES Record and are not retaken; Oklahoma requires no state jurisprudence exam for a base PE comity license (only the P.E./S.E. structural-engineer designation requires additional NCEES structural examinations).
What does the Illinois-to-Oklahoma comity application cost?
$250 (Comity (Engineer) application fee per Oklahoma Administrative Code 245:2-1-18 (single fee; no separate certificate fee in the schedule). Transmitting an NCEES Record costs $175 for the first board and $100 for each additional board, paid separately to NCEES.).
Can I keep my Illinois PE license after I'm licensed in Oklahoma?
Yes — PE licenses stack. Keep the Illinois license active (its renewal and continuing-education/PDH clock run separately) and you hold both. Engineers working near state lines or nationally routinely carry several PE licenses at once, all sourced from a single NCEES Record.
Sources
Primary sources only — official boards and compact commissions. Data last verified 2026-07-21.
- Oklahoma PELS - Comity Professional Engineer License ↗ (accessed 2026-07-21)
- Oklahoma Admin. Code 245:2-1-18 - Fees and penalties ↗ (accessed 2026-07-21)
- NCEES - Records Program (comity licensure) ↗ (accessed 2026-07-21)
- IDFPR — Professional Engineering Frequently Asked Questions (endorsement pathway, FE/PE requirement, NCEES Record, PE vs SE) ↗ (accessed 2026-07-21)
- Ill. Admin. Code tit. 68, § 1380.275 — Fees (Professional Engineer license $100) ↗ (accessed 2026-07-21)
- IDFPR — Professional Engineering (Practice Act, rules, application forms) ↗ (accessed 2026-07-21)
Reviewed by Billy Reiner, Editor · verified against primary sources 2026-07-21
How we verify · All sources · spot an error? [email protected]