The exact day-by-day calculation for when your PERM must begin to secure an approved I-140 before year-6 max-out.
Starting PERM at the wrong time is the single biggest avoidable mistake in the H-1B green card journey. In 2026, the math is unforgiving: PWD takes 3-4 months, recruitment 2-3 months, PERM review 503 days, and I-140 another 30-180 days. Total: approximately 2.5 years. Miss the window and you face the year-6 max-out without an approved I-140 — the worst possible outcome. This calculator gives you the exact start date for your situation.
| Start Month | I-140 Approved By | Safety Margin |
|---|---|---|
| Month 1 (day one) | Month 31 | 41 months safe |
| Month 12 (year 1 end) | Month 42 | 30 months safe |
| Month 24 (year 2 end) | Month 54 | 18 months safe |
| Month 36 (year 3 end) | Month 66 | 6 months safe |
| Month 42 (year 3.5) | Month 72 | 0 margin |
| Month 48+ (year 4+) | Post-year 6 | Max-out risk |
Information Gain: The 2026 timeline assumes no audit. If your PERM is audited (23% of cases), add 270 days to the timeline. This shifts the safe latest-start date from month 24 to month 18. Our data shows audits are more common for: IT staffing firms, roles with unusual requirements, and cases with prior employer violations. Budget for audit risk if your sponsor has any of these characteristics.
Pro Tip: AC21 three-year extensions are available once your I-140 is approved, provided you are the beneficiary of a PERM filed at least 365 days earlier (before year 5). Start PERM by month 24 to comfortably qualify. Starting at month 36+ creates AC21 eligibility issues even if I-140 is eventually approved.
Green zone (months 1-18): Any start date here is safe. I-140 will be approved before year 4 with full AC21 eligibility. This is the optimal window.
Yellow zone (months 19-30): Still safe under normal processing, but audited cases create tight margins. Avoid unless employer has clean audit history.
Red zone (months 31+): Significant max-out risk. Any audit or RFE can push I-140 approval past year 6. Consider changing employers to reset the clock if you are already in this zone.
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Search H-1B Sponsors on Wisa →Month 24 (end of year 2) is the latest safe start under normal processing. Starting by month 18 is recommended to accommodate audit risk. With PWD at 503 days, recruitment 60-90 days, DOL processing 120-180 days, and I-140 approval 30-180 days, total timeline is 28-36 months.
Audits add 270 days to the timeline and occur in approximately 23% of cases. If audited, the safe latest start shifts from month 24 to month 18. If your employer has a history of audits or files in an audit-prone category, plan for the longer timeline from day one of H-1B status.
AC21 extensions require a PERM filed at least 365 days before the six year max-out date. If your PERM is filed in year 5, you may not qualify for the three-year extension based on PERM alone (though you may qualify based on approved I-140). Starting PERM by month 24 ensures full AC21 eligibility.
You must leave the US at the end of year 6 unless you have a pending I-140 filed at least 365 days earlier (allowing one year extensions under AC21). If your PERM is still in progress with no I-140 approval and less than 365 days pending, you face immediate departure requirement.