F-1 OPT to H-1B Transition: Calculating Your Real Cumulative Odds Under the 2026 Multiplier System

The H-1B lottery is annual. Your OPT can give you up to three chances to enter it. But cumulative probability only climbs meaningfully if your wage level improves between attempts — and at a flat Level I across all three years, you still fail to reach H-1B selection roughly 61% of the time.

The most common framing of H-1B odds treats each lottery cycle as an independent event. This year, you have approximately 15% odds. If you fail, you try again next year. While that's statistically accurate per cycle, it misses the strategy question that actually matters: what is the probability that you are selected at any point across the entire STEM OPT window, and what single decision most dramatically changes that cumulative number?

The chart above answers that question with three scenarios. The math is simple arithmetic on independent probabilities, but the strategic implications determine whether you leave the US at the end of your OPT or stay.

📊 Reading the 2026 STEM OPT Cumulative Probability Matrix

The chart maps three OPT strategy routes across Year 1, Year 2, and Year 3 lottery attempts, plus the cumulative probability across all attempts. Reading each row left to right gives you the per-year selection odds, and the rightmost dark bar gives the number that actually governs your decision-making: the probability you are selected at least once during the full window.

Non-STEM OPT (1 Attempt): Year 1 at 15%, no further attempts, cumulative 15%. Non-STEM OPT lasts 12 months, which in practice usually covers only one H-1B lottery cycle. If that one lottery fails, your OPT expires and your status ends. You get exactly one shot.

STEM OPT (3 Attempts, No Promotion): Three consecutive lottery cycles at 15% each, cumulative 38.6%. STEM OPT extends your post-graduation work authorisation to 36 months total — covering three separate April lottery registration windows. But if your employer maintains your designation at Level I across all three years, every attempt carries the same 15% per-cycle rate.

STEM OPT + Promotion (Level II in Year 3): Years 1 and 2 at 15%, Year 3 at 31% (Level II designation), cumulative 49.8%. This is the chart's most important scenario because it shows what a single wage level increase — from Level I to Level II — does to your cumulative odds when timed correctly.

🔢 1. The Cumulative Probability Math

The cumulative probability of being selected at least once across multiple independent lottery cycles follows a straightforward formula:

Cumulative probability = 1 − (probability of failure in Year 1) × (probability of failure in Year 2) × (probability of failure in Year 3)

For STEM OPT at Level I across all three years:

1 − (1 − 0.15)³ = 1 − (0.85)³ = 1 − 0.614 = 38.6%

This means that even with the full 36-month STEM OPT window and three lottery attempts, an Indian graduate who remains at Level I has a 61.4% probability of never being selected for H-1B and having to leave the US without a work visa.

For the STEM OPT + Level II promotion scenario:

1 − (0.85)(0.85)(1 − 0.31) = 1 − (0.7225)(0.69) = 1 − 0.498 = 50.2%

The chart shows 49.8% due to rounding differences in the exact Level II probability applied. The practical message: moving from Level I to Level II in Year 3 closes approximately 11 percentage points of the cumulative gap — from 38.6% to roughly 50% — even though it's only one year's improvement.

⏱️ 2. The OPT Timeline and When Each Lottery Opportunity Exists

Standard post-completion OPT: 12 months from graduation date. A December 2024 graduate has OPT validity through approximately December 2025.

STEM OPT extension: 24 additional months, granted to graduates of STEM-designated programmes at ACCSC-accredited institutions. Three conditions must be met: your degree must appear on DHS's STEM Designated Degree Programme list, your employer must be enrolled in E-Verify, and you must file the I-765 extension with a completed Form I-983 Training Plan signed by your employer before your standard OPT expires.

The three lottery windows available to a STEM OPT holder:

Year 1 (standard OPT): The April lottery for positions beginning October 1. You register in March, results come in May. If selected, your change of status is filed before October 1 and you transition on your October 1 start date.

Year 2 (Year 1 of STEM OPT): Same April window the following calendar year. Your STEM OPT is now active and you file another registration for the same October 1 start date the following fiscal year.

Year 3 (Year 2 of STEM OPT): Third and final April lottery registration. If this fails, your STEM OPT window is typically approaching its expiry and you have no further automatic lottery access.

Each year's lottery is independent. Losing in Year 1 does not affect your odds in Year 2. The annual registration is a fresh draw.

📈 3. Why the Level II Promotion is the Highest-Leverage Decision in Your STEM OPT Window

The chart's most striking feature is the gap between the Year 3 bars in the bottom two rows: 15% for STEM OPT with no promotion versus 31% for STEM OPT with Level II in Year 3. That 16-percentage-point difference in a single lottery cycle is the entire difference between a 38.6% and a ~50% cumulative outcome.

For an Indian software engineer completing their second STEM OPT year, there is no single action that improves H-1B selection probability more than securing a legitimate Level II wage reclassification before the Year 3 lottery.

What Level II actually requires in 2026:

DOL prevailing wage compliance. Your employer must pay at or above the DOL Level II prevailing wage for your specific SOC code in your specific metropolitan statistical area. A software developer (SOC 15-1252) at Level II in the San Francisco-Oakland-Hayward MSA, for example, requires a base salary consistent with the 34th percentile of occupational wages in that area as published in the OEWS survey. The number varies significantly by geography — the same SOC code in Austin or Denver has a meaningfully lower Level II floor than in Bay Area or Seattle.

Documented job responsibilities matching Level II criteria. USCIS cross-checks the wage level designation against the job duties described in the Labour Condition Application. Level II is defined as requiring a worker who has attained the skills for routine performance of the occupation — including theoretical and practical experience — and who functions with only general supervision. If your I-129 petition describes a role requiring constant supervision and guidance, a Level II designation will attract scrutiny.

The employer's LCA and petition must be internally consistent. If your employer wants to designate your role at Level II for lottery purposes but your current position description, title, and compensation history are clearly Level I, the petition must genuinely reflect the promotion — not just assert it.

USCIS consistency review. The wage-weighted lottery rule explicitly empowers USCIS to compare the wage level at registration against the wage level at petition filing. An employer who registers at Level II but files at Level I because the salary was never actually increased will see a request for evidence or denial.

🚫 4. What Happens When STEM OPT Expires Without Selection

If all three lottery cycles fail and STEM OPT expires, you must leave the US or transition to a different visa status. There is no further automatic OPT extension and no grace period beyond the standard 60-day departure window following OPT expiry.

Options at that point:

Re-enroll in a new degree programme. Starting a new F-1 programme resets your OPT clock. A graduate starting a second master's degree at a STEM institution can access another 12-month OPT period plus 24-month STEM extension — effectively three more lottery attempts, though your total US time and career continuity costs are significant.

Switch to an O-1A visa. The extraordinary ability visa has no annual cap and no lottery. It requires demonstrating sustained national or international recognition in your field through publications, awards, high salary relative to peers, or press coverage. This is the subject of the Week 2 cluster in this series.

Return to India and pivot to a different market. The European pathways, the UAE, and the Canadian market don't have the same lottery exposure. Given the Irish CSEP's 24-month Stamp 4 track and Germany's Blue Card's 21-month PR timeline, the cumulative probability comparison across geographies is worth making explicitly before committing to three years of STEM OPT uncertainty.

🎯 5. The Critical STEM OPT Validation Requirements

The STEM OPT extension is not automatic — it requires active employer participation that some companies don't realise they're signing up for:

E-Verify enrollment. The sponsoring employer must be actively enrolled in the DHS E-Verify programme before the STEM OPT extension begins. Employers not enrolled in E-Verify cannot sponsor STEM OPT. Many smaller startups are not E-Verify enrolled and discover this only when the student raises the extension.

Form I-983 Training Plan. The employer must complete and sign a formal training plan documenting the professional goals of the STEM OPT period, the specific skills the student will develop, and the supervision structure. This is a legally significant document — it is reviewed by USCIS if the STEM OPT is audited.

Annual self-evaluation and employer attestation. At the midpoint of the STEM OPT extension (typically month 12 of the 24-month period), the student must submit a self-evaluation and the employer must provide an updated attestation confirming the training plan is being followed. Missing this is a compliance violation.

Reporting requirements within 10 days of material changes. If you change employers during STEM OPT, move to a different location, or experience any significant change in the training plan structure, you must report to your Designated School Official within 10 days. Late reporting can affect STEM OPT validity.

Our Recommendation

Model your STEM OPT as a structured three-year campaign, not a passive waiting period. In Year 1, focus on establishing yourself in the role and gaining the performance track record you'll need to justify promotion. In Year 2, initiate the salary and title review conversation with your employer explicitly in the context of the Year 3 lottery reclassification — most employers don't connect these dots themselves. In Year 3, ensure your Level II designation is supported by a genuine salary increase, updated job description, and LCA consistent with that level before registration opens in March.

If after Year 3's lottery attempt your STEM OPT window is expiring and you haven't been selected, don't treat the O-1A as a consolation prize — treat it as the parallel preparation you should have been building since Year 1. GitHub contributions, speaking at industry conferences, salary documentation establishing peer comparison, and press coverage of your work are all O-1A evidentiary building blocks that compound over the same three-year window.

🖇️ Helpful Links

• Level I vs. Level IV: the full wage-multiplier breakdown and what your DOL wage level actually means for your lottery odds.
• The O-1A Founder Hack: bypassing the H-1B lottery entirely — the Week 2 cluster for entrepreneurial talent and exceptional specialists.
• The 2026 US Tech Paywall: the hub article covering how the wage-weighted lottery, the $100,000 fee, and the combined policy landscape interact.

📚 Official Sources & Data Verification (2026)

All wage-tier multipliers, lottery mechanics, and fee litigation statuses are verified against the active 2026 directives of the Department of Homeland Security (DHS) and federal court dockets:

• Wage-Weighted Selection: Following the finalized USCIS modernization rules (effective Feb 2026), the H-1B registration process prioritizes selections based on the OES prevailing wage level. Level IV wages receive 4 entries; Level I receives 1 entry.
• The $100,000 Presidential Surcharge: Imposed via a September 2025 Presidential Proclamation on new petitions requiring consular processing.
• Current Legal Injunction (July 2026): On July 24, 2026, the U.S. Court of Appeals for the First Circuit denied the federal government's request to stay a lower court ruling. Consequently, the $100,000 fee is currently invalidated and legally unenforceable while the government's appeal proceeds.

Frequently Asked Questions

Q: Does the STEM OPT extension require the same employer as the original OPT? 

A: No. You can change employers during STEM OPT, provided the new employer is E-Verify enrolled and willing to complete the I-983 Training Plan. The new employer essentially steps into the STEM OPT sponsorship role. You must report the employer change to your DSO within 10 days and file an updated I-983.

Q: If I'm selected in the Year 1 lottery but my OPT expires before October 1, what happens? 

A: OPT automatically extends through the end of the period of authorized status if an H-1B petition is pending or approved with a future start date. This is commonly called the "cap-gap" provision. As long as your change-of-status petition was filed before your OPT expired and lists an October 1 start date, you are authorised to remain and work in the US through September 30 under the cap-gap rules.

Q: Can I do any travel outside the US during STEM OPT? 

A: Yes, with appropriate documentation — an unexpired EAD card, a valid F-1 visa stamp, and a STEM OPT Travel Signature from your DSO on your I-20 dated within 6 months. However, as covered in the previous article in this cluster, if an H-1B change-of-status petition has already been filed and is pending, any departure from the US converts that petition from change-of-status to consular processing, triggering the $100,000 Presidential Proclamation fee. Plan all international travel before your H-1B petition is filed, not after.