Backdoor Roth on an H-1B, and what India does with it if you move back (2026)

Who can do a backdoor Roth on an H-1B?

Anyone with US compensation (W-2 wages, 1099 earnings) and a filing status other than married-filing-separately-living-together can do a backdoor Roth. H-1B holders who pass the Substantial Presence Test are US resident aliens for tax; they file Form 1040 and have compensation. Nothing in Publication 590-A or the Code limits IRA contributions by visa type.

The reason H-1B tech workers reach for the backdoor is simple: single filers phase out of direct Roth contributions between $153,000 and $168,000 MAGI in 2026, and MFJ couples between $242,000 and $252,000 (Notice 2025-67). A senior engineer in the Bay Area or Seattle, or a couple on H-1B/H-1B, is usually above those ceilings. The backdoor exists because the Code sets no income limit on either a non-deductible traditional IRA contribution or a Roth conversion.

Two situations where the backdoor doesn't apply or should wait:

• You're on F-1/OPT and still a nonresident alien. The IRA mechanics and deductibility for a nonresident alien filing Form 1040-NR are fact-specific; the simple move is to wait until you're a US resident alien before running the backdoor.
• You're on H-1B in your dual-status year of arrival. The pre-arrival portion is nonresident; make the contribution and conversion in the resident portion only.

The 2026 numbers you need

The IRS set the 2026 retirement figures in Notice 2025-67.

Context sentence: the IRA limit went up for the first time in several years. The last pre-2026 limit under section 219(b)(5)(A) was $7,000; it is "increased from $7,000 to $7,500" (Notice 2025-67).

How a clean backdoor Roth works, step by step

1. Open a traditional IRA and a Roth IRA at the same brokerage, if you don't already have them.
2. Contribute $7,500 non-deductibly to the traditional IRA for the tax year. Because your MAGI is over the deduction limit, the contribution is non-deductible by default; you only have to not claim a deduction on Schedule 1.
3. Convert the full balance to the Roth IRA within a few days. Many brokerages have an "convert to Roth" button.
4. File Form 8606 with your return: Part I reports the non-deductible contribution and your basis; Part II reports the conversion. The IRS instruction is explicit: "You made nondeductible contributions to a traditional IRA for 2025" is a trigger for Form 8606 (Instructions for Form 8606).

If you have no other traditional/SEP/SIMPLE IRA balance on 31 December of the conversion year, the whole $7,500 moves across with roughly zero tax (small earnings between contribution and conversion are taxed as ordinary income). That is the "clean" case.

The pro-rata rule, and why it ruins most H-1B backdoors

The pro-rata rule treats all your non-Roth IRAs as one pot. Publication 590-B describes the figuring in Worksheet 1-1: line 4 is "the value of all your traditional IRAs as of December 31, 2025 (include any outstanding rollovers from traditional IRAs to other traditional IRAs)", line 3 is your basis, and line 7 divides basis by the total pot to get the non-taxable fraction of any distribution or conversion (Publication 590-B).

The practical result for a typical H-1B worker who has rolled an old 401(k) into a traditional IRA:

Context sentence: at a 32% federal marginal rate plus 9.3% California tax, the conversion in row 3 can cost ~$3,000 on a $7,500 contribution. The backdoor only works if the pre-tax pot is empty on 31 December.

Two legitimate ways to empty the pot in advance of a backdoor:

• Roll the pre-tax balance into your current employer's 401(k), if the plan accepts rollovers in. 401(k) balances are not aggregated for pro-rata purposes. Publication 590-B treats "all your traditional IRAs" as the pot, not 401(k)s.
• Convert the whole pre-tax balance to Roth in one tax year, pay the tax, and have a clean pot going forward. Only sensible in a year when your marginal rate is unusually low (sabbatical, job gap, moving back to India mid-year).

Mega backdoor Roth via after-tax 401(k)

If your 401(k) plan allows after-tax (non-Roth) contributions and in-service distributions or in-plan Roth rollovers, you can route far more than $7,500 a year to a Roth. The 2026 total DC annual addition limit under section 415(c) is $72,000 (increased from $70,000; see Notice 2025-67). After the employee's $24,500 elective deferral and the employer match, the remainder up to that cap can be filled with after-tax contributions and then rolled to a Roth.

Notice 2014-54 is what makes this clean. It confirms that when a distribution with both pre-tax and after-tax amounts is split into direct rollovers to different destinations, "if the direct rollover is to two or more plans, then the recipient can select how the pretax amount is allocated" (Notice 2014-54). The commenters' example in the notice is exactly the mega backdoor: "the participant could roll over the pretax amounts included in the distribution to one destination, such as a traditional IRA. The remaining amount of the distribution would be after-tax, which the participant could either roll over into a Roth IRA or retain without incurring any tax liability" (Notice 2014-54).

Three checks before you count on the mega backdoor:

• Confirm your plan document permits after-tax (non-Roth) contributions on top of elective deferrals. Many plans don't.
• Confirm the plan permits in-service distributions of the after-tax account or an in-plan Roth rollover of after-tax amounts.
• Model the actual after-tax contribution limit after your match, since the $72,000 annual addition limit includes your deferral and employer contributions.

The 5-year rules you have to track

Two different 5-year clocks run on a Roth IRA.

The qualified-distribution 5-year clock starts the first year you contribute to any Roth IRA you own. A qualified distribution is one "made after the 5-year period beginning with the first tax year for which a contribution was made to a Roth IRA set up for your benefit" and that meets one of four event tests (age 59½, disability, death, up to $10,000 for a first home) (Publication 590-B).

A separate 5-year conversion clock runs for each conversion. "If, within the 5-year period starting with the first day of your tax year in which you convert an amount from a traditional IRA or roll over an amount from a qualified retirement plan to a Roth IRA, you take a distribution from a Roth IRA, you may have to pay the 10% additional tax on early distributions" (Publication 590-B). The 10% recapture applies to the part of the converted amount that you had to include in income on the conversion — not to the non-deductible basis portion. For a clean backdoor Roth where the entire conversion was basis, the 10% doesn't apply on an early distribution of that principal; it still applies to any earnings and to any taxable conversion from pre-tax IRA money.

Practical consequence for H-1B workers: if you convert pre-tax IRA money (for example, cleaning out a legacy 401(k) rollover) in 2026 and distribute that amount in 2029, you pay the 10% recapture on the taxable portion, unless an exception applies. Plan around the 5-year clock when you time a move back to India.

What India does with your Roth when you move back

The US-India tax treaty, Article 20(1), says: "Any pension, other than a pension referred to in Article 19 (Remuneration and Pensions in Respect of Government Service) or any annuity derived by a resident of a Contracting state from sources within the other Contracting state may be taxed only in the first-mentioned Contracting state" (US-India Treaty). Article 20 only reaches periodic pensions and annuities; a lump-sum Roth IRA withdrawal is not clearly a "pension" or "annuity" under the treaty definition, and would typically fall under Article 23 (Other Income) which also assigns the taxing right to the state of residence. Either way, once you're resident in India, India can tax your private US retirement income.

Three things flow from that:

1. There is no Roth-specific carve-out in the treaty. Neither Article 20 (pensions and annuities) nor Article 23 (other income) says "amounts tax-free in the source country stay tax-free in the resident country". The US doesn't tax a qualified Roth distribution; India is not bound to follow that choice.

2. During RNOR, foreign-source income you don't receive in India is outside the Indian tax net. See our page on RNOR status for returning NRIs (2026). Section 6(6) of the Income-tax Act defines a resident as not ordinarily resident if "non-resident in India in nine out of the ten previous years preceding that year, or has during the seven previous years preceding that year been in India for a period of, or periods amounting in all to, seven hundred and twenty-nine days or less" (Income-tax Act §6). Most Indians who worked in the US on H-1B for 5+ years and then moved back get an RNOR window of 2–3 years. Roth withdrawals during that window that stay in your US accounts are foreign-source and not received in India.

3. After RNOR ends, India taxes your Roth distributions as ordinary income, with no foreign tax credit because the US charged nothing. This is the trap: the whole point of a Roth is tax-free withdrawals, but tax-free in the US does not mean tax-free in India. A $100,000 Roth withdrawal taken as a resident-and-ordinarily-resident in India can be taxed at Indian slab rates up to 30% plus surcharge and cess, with no US tax to credit against it.

A separate point worth noting: your US IRAs held at a US brokerage are US accounts, not foreign accounts, so FBAR and Form 8938 never applied to them in the first place. What does start, once you become a resident of India, is Indian reporting of your US retirement accounts on Schedule FA of the Indian ITR. That reporting is addressed in Schedule FA after moving back to India (2026).

How we handle this at Lesser

For H-1B clients who are still a few years from a move-back decision, the usual plan is: do the backdoor every year, do a mega backdoor if the 401(k) plan allows it, and keep the IRA pot clean by rolling any legacy pre-tax IRA into the current employer's 401(k) before December 31. The parallel question for 401(k) balances is covered in US 401(k) and moving back to India, and for employer equity in Selling RSUs before moving back to India (2026). For clients who have already decided to return to India, we model the alternative of taking qualified Roth distributions during US residence or during the RNOR window, versus leaving the money to grow and paying Indian tax on withdrawal years later. Which is better depends on the US gain between now and then and the client's expected Indian slab rate at withdrawal; it is not a one-answer question.