Changing Jobs on an H-1B: The Porting Rules, the Money, and the One Date That Decides Everything

You have an offer from a better company. The pay is higher, the team is stronger, and the only thing standing between you and a yes is a question that keeps Indian H-1B holders awake at night: if I leave, do I lose my place in the green-card queue, and can I even start the new job before the paperwork clears? The honest answer is that a job change on an H-1B is one of the most well-trodden, well-protected moves in US immigration, and the law is mostly on your side. The trap is not the law. It is the handful of dates and documents that, if you get them wrong, turn a routine transfer into a gap in status or a lost priority date.

The 30-second answer: On an H-1B you can start work for a new employer the moment USCIS receives the new Form I-129 petition, not when it approves it. This is H-1B portability under AC21 (2000). Wait for the receipt notice (I-797C), then begin. The new employer files an LCA, then the I-129; add premium processing ($2,965 as of March 1, 2026) for a 15-business-day answer. Because you were already counted against the cap, no new lottery is needed. Your green-card priority date survives: a new employer files a fresh I-140 that recaptures your old priority date, and once an I-485 has been pending 180 days, AC21 portability lets you change to a same or similar role and keep it. The real risk is a denial after you have started, so file in valid status and keep evidence.

This guide is for the Indian professional on an H-1B who has an offer in hand, or is about to go looking, and wants to understand the mechanics before signing anything. We will walk through portability (the rule that lets you start early), exactly what the new employer files and when, premium processing, why your existing H-1B is a quiet advantage, how to keep your status and pay-stubs clean through the switch, and then the part most articles skip: the green-card consequences and the money you leave on the table when you walk out. There is a worked timeline so you can see the dates line up, an edge-cases section for the situations that break the simple rule, and an honest read at the end about when to move and when to wait.

H-1B portability: you start when the petition is filed, not approved

The rule that makes a mid-career job change possible is H-1B portability, written into law by Section 105 of the American Competitiveness in the Twenty-First Century Act of 2000, which everyone calls AC21. Before AC21, an H-1B worker had to wait for the new petition to be approved before starting the new job, which could mean months of unpaid limbo. AC21 changed that. A worker in valid H-1B status may begin employment with a new employer as soon as that employer files a non-frivolous Form I-129 petition with USCIS on the worker's behalf.

In practice, "files" means the moment USCIS receives the petition, and the proof of that is the receipt notice, Form I-797C, which carries the receipt date and a case number. The sensible thing is to wait for the I-797C before your first day, because that piece of paper is what the new employer's HR and your own records will rely on. The petition does not have to be approved. Your authorisation to work for the new employer continues for as long as the petition is pending, and only ends if the petition is denied.

Three conditions have to hold for portability to work cleanly. You must have been lawfully admitted to the US on H-1B. The new petition must be non-frivolous, meaning it has an arguable basis in law and fact, which any properly prepared employer filing will. And you must not have worked without authorisation since your last lawful admission. Meet those, and the new employer can file at any point and you can port. One practical point that trips people up: portability is for people who are physically present in the US when the petition is filed. If you are travelling abroad when the new employer files, the mechanics shift to consular processing and the early-start logic does not apply in the same way, so do not leave the country in the window between resigning and the new petition being filed.

What the new employer actually files, and in what order

The new employer carries the paperwork, not you, but you should know the sequence so you can tell whether your prospective employer's immigration team is competent and moving fast enough.

First comes the Labor Condition Application (LCA), Form ETA-9035, filed with the Department of Labor. The LCA is the employer's attestation that it will pay you at least the prevailing wage for your role and location and that hiring you will not harm US workers. The LCA must be certified before the I-129 can be filed, and certification normally takes about seven business days. The LCA is tied to a specific worksite and a specific wage level, which matters later when we talk about salary and level.

Then comes Form I-129, Petition for a Nonimmigrant Worker, filed with USCIS, with the certified LCA attached along with evidence of your degree, the job description, the company's ability to pay, and your existing immigration documents. This is the petition whose filing (receipt) triggers your portability. The employer can request premium processing at the same time, or later, by adding Form I-907.

A few documents you will be asked to provide to the new employer's lawyers, so gather them before you resign: your current I-797 approval notice, your most recent I-94, your passport and visa stamp, your degree certificates and transcripts (and an education evaluation if your degree is Indian and not previously evaluated), and recent pay-stubs from your current employer to show you have maintained status. Having these ready can shave days off the filing.

Premium processing: what it buys and what it costs

Premium processing is the upgrade that turns a months-long wait into a guaranteed answer, and for a job change it is almost always worth it. By filing Form I-907 alongside (or after) the I-129, the employer buys a USCIS decision within 15 business days. That decision is not necessarily an approval. It can be an approval, a denial, or a Request for Evidence (RFE), but you get a response inside the window.

As of March 1, 2026, the premium processing fee for an H-1B I-129 is $2,965, up from $2,805. The fee is paid separately from the base filing fees and is usually borne by the employer. One caution worth bolding: if USCIS issues an RFE, the 15-business-day clock resets once the employer responds, so premium processing guarantees speed only to the next government action, not to a final approval.

For a transfer, premium processing matters for two reasons. It gives you and the new employer certainty quickly, which is reassuring when you have already started work on a pending petition. And if you are inside the 60-day grace period after leaving a job, or close to your I-94 expiry, the 15-day answer can be the difference between a clean approval and an anxious wait. You can legally start work the day the petition is receipted whether or not it is filed premium, so premium processing is about certainty and speed of the decision, not about your right to begin.

The cap-exempt advantage of an existing H-1B

Here is the part that makes a job change on H-1B genuinely lower-risk than the first H-1B, and it is the thing first-timers underestimate. The H-1B has an annual cap of 65,000 regular visas plus 20,000 for US master's degree holders, and demand vastly exceeds supply, so entry is by a March lottery with selection odds that have hovered well below one in three in recent years. That brutal lottery is a one-time gate. Once you have been selected and have held cap-subject H-1B status, you are counted against the cap for the rest of your authorised stay, and any new employer can file a transfer petition for you at any time of year, with no lottery.

That is the cap-exempt advantage of an existing H-1B: you have already cleared the hardest filter, and your H-1B becomes portable across employers for the balance of your six-year term (longer if you have an approved I-140 or pending green-card case that lets you extend beyond six years). You are not gambling on a lottery; you are filing a transfer that is approved on its merits.

The one situation where this does not hold is narrow but real. If your only prior H-1B was with a genuinely cap-exempt employer, such as a university, an affiliated non-profit, or certain research organisations, and you were never counted against the regular cap, then a move to a cap-subject private employer can put you back into the lottery, because you never went through it. Most Indian professionals reading this came in through a cap-subject employer and were counted, so this exception will not apply to them, but if you have only ever worked at a university on H-1B, confirm your cap-count status with the new employer's lawyers before you resign.

Maintaining status and pay-stub continuity through the switch

The cleanest job changes share one feature: there is no daylight between the old job and the new petition. The principle is that you must maintain H-1B status continuously, and the evidence of maintained status is your pay-stubs. USCIS, when it adjudicates the new petition, looks back to confirm you were in valid status, which in turn means you were being paid by your H-1B employer up to a reasonable point before the transfer.

The practical rules I follow when advising on this:

Do not resign before the new petition is filed unless you have a plan for the gap. The safest sequence is to have the new employer file the I-129 while you are still employed, get the receipt, and only then give notice. If you must resign first, you have the 60-day grace period (a discretionary allowance, up to 60 consecutive days or your I-94 expiry, whichever is sooner) within which a new petition can be filed. But the 60 days is not a right to be relied on casually; it is a cushion, and the day after your last paid working day is day one.

Keep every pay-stub. From both employers. A short, explained gap between jobs (a week or two while you relocate) is usually fine, but an unexplained multi-month gap with no pay is what triggers questions. If there will be a gap, keep documentation of why.

Watch the start date on the new LCA and petition. The new employer states an employment start date. If that date is after your last day at the old job, there is a window where you are not being paid by either, and while a short window is normal, you want it short and explainable.

Do not travel internationally in the gap between filing and approval if you can avoid it, because re-entry on a pending change-of-employer petition is legally workable but adds risk and complexity. If you must travel, talk to the lawyers first.

The green-card implications: this is where the real money sits

For most Indian H-1B holders, the H-1B is not the prize. The green card is, and the Indian employment-based backlog means the priority date you are sitting on may represent years of waiting that you do not want to forfeit. A job change can be done without losing any of that, but only if you understand the two distinct portability rules at work, because they are easy to confuse.

Rule one: I-140 priority-date retention. The green-card process for most H-1B holders runs PERM (labour certification) to I-140 (immigrant petition) to I-485 (adjustment of status) or consular processing. Your priority date is set when the PERM is filed, and it is your place in the queue. Once an employer has an approved I-140, that priority date belongs to you, and it survives a job change. When a new employer sponsors you, they run a new PERM and file a new I-140, and that new I-140 can recapture (re-use) the earlier priority date. You move your old place in the queue to the new petition. The catch: an approved I-140 generally stays valid for priority-date retention even if the old employer later withdraws it, provided the withdrawal happens more than 180 days after approval. If the old employer withdraws (or USCIS revokes) the I-140 within 180 days of approval and before you have a pending I-485, you can lose the ability to keep that priority date. So the timing of the old I-140's approval relative to your departure matters.

Rule two: AC21 job portability after 180 days. This is the later-stage rule and a different animal. Once your I-485 adjustment of status has been pending for 180 days or more, INA Section 204(j) (added by AC21) lets you change jobs, even to a different employer, and keep the underlying approved I-140 and priority date, as long as the new job is in the same or a similar occupational classification. The old employer can withdraw the I-140 and it does not sink you, because the petition is deemed valid for portability once the I-485 has been pending past 180 days. You formalise the new job by filing Form I-485 Supplement J. USCIS judges "same or similar" on actual duties, skills, education and experience requirements, and the wage level, not on the job title, so a software engineer moving to a senior software engineer role at a new company is clearly fine, while a software engineer moving into pure people-management may invite scrutiny.

The honest framing: if you are early in the green-card process (you have an approved I-140 but no I-485 on file yet, which is the position of most Indians given the backlog), you rely on rule one, priority-date recapture, and you want the old I-140 to have been approved for more than 180 days before any withdrawal. If you are late in the process with a long-pending I-485 (rare for India, but it happens for those who filed when dates were briefly current), you rely on rule two and the same-or-similar test. Know which one applies to you before you move.

The money side of leaving: RSUs, sign-on, 401k, and the salary question

The immigration mechanics are only half the decision. The other half is the money you forfeit by walking out and the money you negotiate on the way in, and for a senior H-1B holder the forfeited equity often dwarfs the salary bump.

RSU forfeiture is the big one. Restricted stock units vest on a schedule, commonly over four years with a one-year cliff. Anything unvested on your last day is almost always forfeited. If you have, say, 400 units left to vest worth $80,000, leaving before the next vest date means you walk away from that $80,000. The standard play is to time your departure just after a vest date, and to ask the new employer to make you whole on what you forfeit, usually through a sign-on bonus or a one-time RSU grant sized to your forfeited equity. Get the make-whole offer in writing and understand its own vesting schedule, because a sign-on grant that vests over four years is not the same as cash today.

Sign-on and relocation. A sign-on bonus is taxable as ordinary US income in the year received and usually carries a clawback (you repay a portion if you leave within 12 months), so read that clause. Relocation assistance, if the move involves one, may be partly taxable. None of this is unique to H-1B holders, but the clawback interacts badly with visa risk: if your petition is denied and you have to leave, you may owe back a sign-on you have already spent.

Your 401k. Changing jobs is the moment to deal with your old 401k. You have three sane options. Leave it where it is if the old plan allows it and the funds are good. Roll it into the new employer's 401k if that plan accepts rollovers. Or roll it into an IRA, which usually gives the widest fund choice. The one move to avoid is cashing out, which triggers ordinary income tax plus a 10% early-withdrawal penalty if you are under 59 and a half, and as an Indian who may one day return home, preserving the tax-deferred wrapper matters. A direct trustee-to-trustee rollover avoids withholding and is the clean route. If a return to India is on the horizon, read the retirement planning across two countries guide before you touch the account, because the India-US treatment of a 401k is not symmetrical.

The salary and level question. Because the new employer files an LCA, your new salary must meet or exceed the prevailing wage for the role, level, and location. This is usually a floor, not a ceiling, but it has a quiet consequence: the level at which the new role is classified (Level 1 entry, up to Level 4 senior) affects the prevailing wage and can affect both your green-card category and how robust the petition looks. If a new employer lowballs the level to save on the prevailing wage, that can come back to bite you when the green-card PERM is filed. Ask what level the role is and what occupational classification (SOC code) the LCA will use, because that determines your EB-2 versus EB-3 path, and for Indians the gap between EB-2 and EB-3 final action dates can be years.

A worked timeline: from offer to start date, with the priority date intact

Numbers make this concrete. Take Arjun, a software engineer on his second H-1B (so already cap-counted), with an approved I-140 from his current employer dated September 2023 and a priority date of March 2021. He has an offer from a new company with a $35,000 higher base and a sign-on to cover forfeited RSUs.

• Day 0, January 12, 2026: Arjun accepts the offer in principle but does not resign. He gives the new employer's immigration team his I-797, I-94, passport, degree documents, and last three pay-stubs.
• Day 5, January 17: The new employer files the LCA (ETA-9035) with the Department of Labor.
• Day 12, January 24: The LCA is certified.
• Day 13, January 25: The new employer files Form I-129 with premium processing (I-907), fee $2,965. Arjun is still employed and being paid by his current employer, so his status is unbroken.
• Day 14, January 26: USCIS issues the receipt notice (I-797C). This is the date Arjun's portability begins. He could legally start the new job now.
• Day 15, January 27: With the receipt in hand, Arjun gives two weeks' notice. He times his last day for February 13, two days after an RSU vest on February 11, so he banks that vest rather than forfeiting it.
• Day 29, February 9 (within 15 business days of filing): USCIS approves the I-129. New validity dates issued.
• February 16: Arjun starts the new job. There is a short, explained gap (Feb 14 to 15, a weekend) between employers, and he keeps pay-stubs from both sides showing continuous status.

On the green card: Arjun's new employer starts a fresh PERM, and when they file the new I-140, they recapture his March 2021 priority date. Because his old I-140 was approved in September 2023, more than 180 days before he left, the priority date is safe even after the old employer withdraws the petition. Arjun does not go to the back of the queue. He changes jobs, banks his vest, gets a higher salary, and keeps his place in line. The whole thing turned on one date: he filed before he resigned, so his portability and his status were never in question.

Now the counterfactual. Had Arjun resigned first on January 12 and only had the new employer file on, say, February 20, he would have been relying on the 60-day grace period, his status would have depended on a discretionary allowance, and any RFE could have pushed the decision past his cushion. Same outcome if it worked, far more risk if anything slipped. The difference is sequence, not luck.

Edge cases

I-140 portability and the 180-day rule. The two portability rules genuinely confuse people, so to restate the trap: priority-date recapture (rule one) needs an approved I-140 and works through a new employer's new petition. AC21 job portability (rule two) needs an I-485 pending 180+ days and a same-or-similar job, filed via Supplement J. If your old I-140 was approved fewer than 180 days before the old employer withdraws it, and you have no pending I-485, you can lose the priority date. So if you are job-hunting and your I-140 was approved recently, either wait until it crosses 180 days from approval, or ask the old employer not to withdraw, or accept that you may be recapturing from a petition that could be revoked. This is the single most expensive thing to get wrong.

Petition denial after you have started. Portability lets you work on a pending petition, but if USCIS denies the new I-129, your authorisation under that filing ends and you must stop working for the new employer. You do not automatically revert to the old employer's H-1B (they may have moved on, and the old petition is still valid only if you can return to it). A denial after you have already resigned the old job and started the new one is the real downside risk of porting. Mitigate it by filing in valid status, using premium processing so you learn fast, choosing an employer with a clean immigration record, and ideally not burning the old relationship entirely until the new petition is approved. If you are within 60 days of the denial and still in a grace period, you may be able to file again or change status, but plan for the possibility before you leap.

RSU forfeiture timing. Unvested equity is forfeited on departure in almost all standard plans, so the timing of your last day relative to your vest schedule is real money. If a vest is three weeks away and worth $40,000, it is usually worth delaying your start date to capture it, and a reasonable new employer will accommodate a start date set after a known vest. Get the make-whole grant in writing and read its vesting schedule; a four-year make-whole grant does not replace a vest you forfeit next month.

The cap-exempt corner case. If your entire H-1B history is with a cap-exempt university or non-profit and you were never counted against the regular cap, moving to a cap-subject private employer can drop you back into the March lottery, which means you cannot simply transfer and start. Confirm your cap-count status before resigning. Conversely, if you have ever been cap-counted, you carry that with you and no new lottery applies, which is the normal case for Indian professionals who entered through IT and product employers.

Concurrent H-1B. You can hold H-1B status with two employers at once (a concurrent H-1B), which is occasionally used to de-risk a move: keep a part-time role with employer A while employer B files. It is more relevant for the cap-exempt-to-cap-subject bridge than for a standard transfer, but it exists if you need a belt-and-braces approach.

The closing read

A job change on an H-1B is, for most Indian professionals, far less dangerous than the anxiety around it suggests. The law was written specifically to let you move: you can start the new job the day the petition is filed, you do not re-enter the lottery, and your green-card priority date follows you to the new employer through recapture or AC21 portability. The system assumes you will change jobs, and it protects you when you do.

The honest read is that the risk is almost entirely about sequence and timing, not about the law. File before you resign so your status is never in question. Time your last day just after an RSU vest so you do not gift your old employer your equity. Make sure your old I-140 is more than 180 days past approval before anyone withdraws it. Get the make-whole grant and any clawback in writing. And know which of the two portability rules applies to your stage of the green-card process, because confusing them is the one mistake that costs years. Do those five things, and a job change is exactly what it should be: a raise, a better team, and a priority date that did not move an inch.

If the new role is a stepping stone to leaving the US entirely or to a return home, the calculus shifts, and the losing your job abroad and moving savings when you relocate guides cover the exit side. But if you are staying and simply upgrading, the path is clear and well-lit.

Related guides

• H-1B to green card for Indians: the full path
• The US green-card backlog for India: EB-2 and EB-3 in 2026
• EB-1 for Indians: extraordinary ability and priority workers
• EB-2 NIW: the national interest waiver for Indians
• Green card versus US citizenship: the decision
• H-4 EAD: spouse work rights on H-1B
• L-1 intra-company transfer visa for Indians
• Losing your job abroad: the visa clock and the money runway
• Health insurance between jobs abroad
• Negotiating an expat package
• Notice period and relocation timing
• RSU and ESOP taxation for NRIs
• Retirement planning across two countries
• Social security totalisation agreements

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This guide explains general H-1B portability and AC21 green-card rules as they stand in early 2026 and is not legal advice. US immigration rules and fees change, adjudication is discretionary, and individual cases turn on their facts. The 2025-2026 period has seen active rulemaking on fees and on certain overseas visa issuances, so confirm current fees and policy before you act. Have a qualified US immigration attorney review your specific situation, particularly the timing of any I-140 withdrawal and which portability rule applies to your green-card stage, before you resign or file.