EB-1B and EB-1A are both first-preference green card categories, and researchers often qualify for one or both. The difference starts with who files. EB-1B is filed by "any United States employer desiring and intending to employ a professor or researcher who is outstanding in an academic field" (8 CFR 204.5(i)(1), 2025 edition). EB-1A can be filed by "an alien, or any person on behalf of the alien" (8 CFR 204.5(h)(1)).
As of October 23, 2026, the choice turns on three questions: do you have a qualifying employer and offer, how does your evidence map to each standard, and how much do you value independence from your employer. This guide compares the two side by side.
- EB-1B is filed by a US employer offering a tenured, tenure-track or permanent research position; EB-1A can be filed by the researcher or anyone on their behalf.
- EB-1B needs at least two of six criteria showing international recognition as outstanding in an academic field.
- EB-1A needs a one-time major international award or at least three of ten criteria showing sustained national or international acclaim.
- EB-1A's standard is being among the small percentage who have risen to the very top of the field.
- EB-1B also requires at least three years of teaching or research experience in the academic field.
- Both use the same first-preference queue and the same $715 I-140 fee, and both qualify for 15-business-day premium processing.
- EB-1B is a job-offer category, so a job change after filing an I-485 needs Supplement J; EB-1A does not.
How do EB-1B and EB-1A compare?
| EB-1B outstanding researcher | EB-1A extraordinary ability | |
|---|---|---|
| Who files | US employer | You, or anyone on your behalf |
| Job offer | Required: tenured, tenure-track or permanent research | Not required; clear evidence of US work plans |
| Evidence threshold | 2 of 6 criteria | Major award, or 3 of 10 criteria |
| Standard | Recognized internationally as outstanding in the academic field | Sustained acclaim; among the small percentage at the very top |
| Experience | At least 3 years teaching or research | No minimum |
| Comparable evidence | Allowed if criteria do not readily apply | Allowed if criteria do not readily apply |
| Job change after I-485 | Supplement J portability after 180 days | No Supplement J needed |
Sources: 8 CFR 204.5(h) and (i); USCIS, Supplement J Instructions.
The table hides one practical difference: control. With EB-1B, the employer decides whether and when to file, signs the petition and must keep the offer open. With EB-1A, you control the timing and the evidence, and the petition stays yours if your job changes.
How different are the evidence standards?
The count and the bar both differ. EB-1B requires evidence that the researcher "is recognized internationally as outstanding in the academic field," consisting of "at least two" of six criteria: major prizes, memberships requiring outstanding achievement, published material by others about the work, judging, original research contributions, and scholarly authorship in journals with international circulation (8 CFR 204.5(i)(3)(i)).
EB-1A requires "sustained national or international acclaim," shown by a one-time major international award "or at least three" of ten criteria (8 CFR 204.5(h)(3)). The regulation defines extraordinary ability as "a level of expertise indicating that the individual is one of that small percentage who have risen to the very top of the field of endeavor" (8 CFR 204.5(h)(2)).
Both use a two-step review: first whether the evidence meets the criteria, then a final merits determination on the whole record (USCIS Policy Manual, Vol. 6, Part F, Ch. 3; Ch. 2). For EB-1B, the Policy Manual notes that authorship of scholarly articles "regardless of the caliber" satisfies the criterion at step one, with quality weighed at step two (USCIS Policy Manual, Vol. 6, Part F, Ch. 3). Our guide to the Kazarian two-step explains how that review works for EB-1A.
What does EB-1B require from the employer?
A qualifying offer, which is often the deciding factor. The offer must be for a tenured or tenure-track teaching position or a permanent research position, from a US university or institution of higher learning, or from a private employer's research department, division or institute that employs "at least three persons full-time in research positions" and has documented accomplishments in an academic field (8 CFR 204.5(i)(3)(iv)). Government agencies generally do not qualify unless they are a US university or institution of higher learning (USCIS Policy Manual, Vol. 6, Part F, Ch. 3).
The researcher also needs "at least three years of experience in teaching and/or research in the academic field," with limits on counting work done during an advanced degree (8 CFR 204.5(i)(3)(iii)). Our guide to EB-1B for outstanding professors covers the employer side in more detail.
What does EB-1A require instead?
No offer, but proof of US plans. The regulation says "neither an offer for employment in the United States nor a labor certification is required," but the petition must include "clear evidence that the alien is coming to the United States to continue work in the area of expertise," such as letters from prospective employers, contracts or a detailed statement of plans (8 CFR 204.5(h)(5)). That independence is why EB-1A appeals to researchers who may change institutions or move to industry.
Are the costs and timelines different?
Not at USCIS. Both use Form I-140 at $715 on paper, and both qualify for premium processing at $2,965 (USCIS, Form G-1055, edition 10/16/26) with a 15-business-day clock, which USCIS lists for most I-140 categories including E11 and E12 (USCIS, How Do I Request Premium Processing?). The Asylum Program Fee differs by filer: $300 for a self-petitioner or small employer, $0 for a nonprofit such as many universities, and $600 for other employers (USCIS, Form G-1055).
Both share the EB-1 queue, so the wait for a visa number is the same for the same country of chargeability. Our analysis of EB-1A and NIW wait times for India covers the queue.
Should you file both?
Sometimes. Each petition stands on its own, and the green card can proceed on whichever is approved and current. A common pattern is an employer-filed EB-1B, which fits the academic criteria well, alongside a self-filed EB-1A that travels with you if you leave. Because EB-1B is a job-offer category, a job change after filing an I-485 requires Supplement J portability once the I-485 has been pending 180 days, while EB-1A applicants "do not need to file Supplement J" (USCIS, Supplement J Instructions). Our guide to filing two petitions discusses the trade-offs.
What this means for you
- If your employer offers a permanent or tenure-track role and will sponsor, EB-1B is often the more natural fit for a strong academic record.
- If you may change employers, move to industry or lack a qualifying offer, focus on EB-1A.
- Map your evidence to both lists; judging, publications and original contributions often count toward both.
- Consider filing both when the cost of a second petition is small relative to the security it adds.
Where to start
Our free evaluation at /evaluate/ maps your record against the EB-1A criteria and the NIW standard, and Frank, our AI assistant at /frank, finds real opportunities for the criteria you are missing. Petitions are reviewed and filed by our partner law firm, Lai & Turner.
Sources
All checked October 23, 2026.
- 8 CFR 204.5(h) and (i) (govinfo, 2025 edition). Who may file; EB-1A definition, criteria and US work evidence; EB-1B criteria, experience and offer requirements.
- USCIS Policy Manual, Volume 6, Part F, Chapter 2 and Chapter 3 (current as of October 2, 2026). Two-step review; EB-1B authorship at step one; government agencies.
- USCIS, Instructions for I-485 Supplement J (edition 09/18/26). Job-offer categories; EB-1A exemption; 180-day portability.
- USCIS, Form G-1055 Fee Schedule (edition 10/16/26). I-140, Asylum Program Fee and premium processing fees.
- USCIS, How Do I Request Premium Processing? (updated 03/23/2026). 15-business-day timeframe for E11 and E12.
Frequently asked questions
Is EB-1B easier than EB-1A for researchers?
The evidence threshold is lower in count: EB-1B needs two of six criteria and international recognition as outstanding, while EB-1A needs three of ten and acclaim placing you among the small percentage at the very top of the field. But EB-1B adds requirements EB-1A does not have: a qualifying US employer, a permanent or tenure-track offer and three years of experience. Which is easier depends on your employer as much as your record.
Can I file EB-1B and EB-1A at the same time?
Yes. Nothing in the rules prevents an employer-filed EB-1B and a self-filed EB-1A for the same person, and both carry the same EB-1 priority date queue. Some researchers do this to hedge: EB-1B relies on the employer's offer and stronger fit to the academic criteria, while EB-1A stays with you if you change employers. Each petition needs its own fees.
Do I need a job offer for EB-1A?
No. The regulation says neither an offer of employment nor a labor certification is required for EB-1A, but the petition must include clear evidence that you are coming to the United States to continue work in your area of expertise. That evidence can be letters from prospective employers, contracts or a detailed statement of your plans.
What happens to EB-1B if I change jobs?
Because EB-1B requires a job offer, a change of employer matters. If your I-485 has been pending at least 180 days, you may be able to port to a new job in the same or a similar occupation using I-485 Supplement J. Before that point, a new employer generally needs to file a new petition. EB-1A applicants do not file Supplement J because the category is not tied to a job offer.
Does a postdoc count toward EB-1B's three years of experience?
Research experience after your degree, such as a postdoc, generally counts. Experience gained while working on an advanced degree counts only if you obtained the degree and either had full responsibility for the classes you taught or your research toward the degree was recognized as outstanding in the field. The offered EB-1B position itself, however, must be permanent or tenure-track, not a fixed-term postdoc.
Green Card Guide AI is not a law firm and this article is not legal advice. It describes evidence-building strategy in general terms; your attorney determines what belongs in your petition and how it's argued.
