DTAA tie-breaker rules: when both India and the US claim you as resident

In the year you move back from the US to India, both countries can tag you as a tax resident under their own rules. The US looks at calendar-year substantial presence. India looks at April-to-March stay under Section 6 of the Income-tax Act, 1961. Cross those calendars in the year of return and you can easily satisfy both. That is when the India-US treaty tie-breaker quietly does its job.

The treaty does not erase your domestic residency in either country. It just decides which side is your treaty residence for that period, which in turn governs how foreign tax credits and the distributive rules work. Knowing the order of the test before you file matters more than knowing the result.

1. Why both countries can claim you in the same year

The US substantial presence test has two prongs: at least 31 days of presence in the current calendar year, and a 183-day weighted total across the current year plus the prior two (current year days + one-third of last year + one-sixth of the year before). Anyone on H-1B who has been in the US for several years usually clears the weighted total in the year they leave, and clears the 31-day current-year prong if they were physically in the US at all in that year.

India's Section 6 test for the financial year (April to March) treats you as resident if you stay 182 days or more in India in that year, or 60 days or more in the year combined with 365 days or more across the four preceding years. The 60-day threshold gets substituted with 182 days for an Indian citizen leaving India for employment or as crew, and for an Indian citizen or PIO visiting India — but a person who is moving back to settle is not automatically "on a visit," so do not assume the relaxed limb applies to your facts. Where it does apply and your India-source income exceeds ₹15 lakh in the year, the substituted threshold is 120 days, not 182. Section 6(1A) separately deems an Indian citizen with India-source income above ₹15 lakh as resident if they are not liable to tax in any other country by reason of domicile, residence, or any similar criterion — note this turns on liability to tax, not on tax actually paid.

Two different calendars, two different tests. Both can come back yes for the same person in the same overlapping months. The treaty solves it.

2. Where the tie-breaker lives

Article 4 of the India-US Double Taxation Avoidance Agreement defines who is a "resident" of a contracting state. Article 4(1) says a person is resident of a state if they are liable to tax there by reason of domicile, residence, citizenship, place of incorporation, or any other criterion of a similar nature. That part will say "yes" for both sides in the year of move.

Article 4(2) then runs the tie-breaker, in this fixed order. You stop the moment one test gives a clean answer.

Test 1   Permanent home available to you
Test 2   Centre of vital interests (closer personal + economic relations)
Test 3   Habitual abode
Test 4   Nationality
Test 5   Mutual agreement procedure (competent authorities decide)

The order is not optional. You do not pick the test that gives the answer you prefer. The point of the hierarchy is to make the answer reproducible.

3. Test 1 — Permanent home

A "permanent home" is a dwelling available to you on a continuous basis, not a hotel, not a short-let. It can be owned or rented. If you have a home available in only one of the two countries, the analysis stops there and that country wins.

Where this resolves cleanly:

• You sold the US house, surrendered the US lease, and moved into the Bangalore flat your parents own. Permanent home is in India only. India wins under Test 1.
• You kept the US house, rented out the India property end-to-end. Permanent home is in the US only. US wins under Test 1.

Where it does not resolve:

• You kept the US house (vacant or occupied by family) and moved into a Bangalore flat. Homes available in both. Move to Test 2.

The lesson is that the disposition of the US dwelling on departure is a tax event, not just a logistical one. Holding the US house through the year of return is what most often forces the analysis into the harder tests.

4. Test 2 — Centre of vital interests

If permanent homes exist in both countries, the treaty asks where the centre of your personal and economic relations sits. Personal includes family, social ties, club memberships, religious and cultural affiliations. Economic includes employment, business, the location of investments and bank accounts that are actively used.

This is the test that does not run on a single number. The treaty text itself frames it as a facts-and-circumstances exercise. The OECD Model commentary, which is widely cited as persuasive interpretive background even though India and the US have their own treaty, treats it as a weighing exercise where personal relations carry significant weight, often more than the asset map alone.

A typical fact pattern:

• Spouse and kids land in India, kids enrolled in Indian school, you start a job with an Indian employer or run an Indian payroll, US 401k and brokerage accounts left in place. Centre of vital interests has shifted to India even if the US accounts are larger.
• Spouse and kids stay in the US, kids' school year unbroken, you commute back for short stints and operate from a US payroll. Centre of vital interests is still in the US even if you bought a flat in India.

If the personal and economic axes both point the same way, this test resolves. If they pull in opposite directions, the treaty drops to Test 3.

5. Test 3 — Habitual abode

Habitual abode is the country where you spend a more frequent and more regular pattern of stay across a sufficiently long observation period. A single year can be misleading because of one-off travel, and habitual abode is generally analysed as a comparative pattern that may need to be observed beyond a single abnormal year of move.

In practice, day-counts pulled from passport stamps, airline records, and (for non-citizens entering India) FRRO travel-history extracts are the kind of evidence assessees rely on, though Indian tax authorities have not prescribed a single standard evidence set for treaty habitual-abode analysis. The test is comparative, not absolute. A returnee who spent 200 days in India and 80 days in the US in the year of move clearly has habitual abode in India. A 150 / 150 split with three short trips each way is the case where the analysis is uncomfortable and the next test is needed.

6. Test 4 — Nationality

If habitual abode does not resolve the tie, the treaty uses nationality. For an Indian citizen who has not naturalised as a US citizen, this test resolves to India. For a US citizen returnee who retains US citizenship under Indian rules permitting OCI, this test resolves to the US.

This is also where the treaty quietly catches the OCI-card holder who is technically a foreign citizen of Indian origin. OCI is not citizenship. If your US naturalisation is final, your nationality for treaty purposes is United States, and Test 4 will tag you as US even after you physically move to India.

7. Test 5 — Mutual agreement procedure

If none of the above resolves, the two competent authorities settle it under MAP. For India this is the Joint Secretary (FT&TR) in the Foreign Tax & Tax Research division of the Central Board of Direct Taxes, and a resident assessee invokes MAP by filing Form 55 online under Rule 121. For the US the competent authority function is split between the IRS Advance Pricing and Mutual Agreement (APMA) programme and the Treaty Assistance and Interpretation Team (TAIT); residence and tie-breaker matters generally sit with TAIT rather than APMA.

In practice almost no returnee's facts get this far. The earlier tests resolve the vast majority of cases. MAP is a real lever, but it is a multi-year process and is overkill for most returnees' Article 4(2) questions.

8. What the result actually changes

The tie-breaker decides treaty residence. From there:

Treaty residence    Foreign tax credit flows
India              FTC for US-source tax claimed in India return
US                 FTC for India-source tax claimed in US return

Treaty residence does not eliminate the duty to file in the other country. A US citizen generally still files Form 1040 on worldwide income — the saving clause in the treaty preserves that filing obligation regardless of treaty residence, subject to the usual gross-income filing thresholds. An Indian resident files an Indian return on worldwide income when the Section 139 filing thresholds are crossed; the scope of what is taxed turns on Section 5 read with the resident-but-not-ordinarily-resident (RNOR) status under Section 6(6), which protects most foreign-source income for the limited RNOR window. The tie-breaker just determines which side gets the residence-country taxing rights on items where the treaty's distributive articles defer to residence.

The most common returnee benefit of getting the call right is foreign tax credit ordering. Claim FTC in the wrong country and the credit can be denied for procedural reasons even when the underlying tax was paid.

9. The paperwork side

Claiming treaty benefits in India requires a Tax Residency Certificate (TRC) from the other country under Section 90(4) of the Income-tax Act. Section 90(5) read with Rule 21AB then requires Form 10F only for prescribed particulars not already contained in the TRC — in practice most TRCs are missing one or more of those particulars, so Form 10F is filed electronically on the Income-tax portal alongside the TRC. The US issues TRCs as Form 6166 via Form 8802 application; the IRS asks applicants to file Form 8802 at least 45 days before the certification is needed, and current processing status is published separately on the IRS site.

The mistake is filing the Indian return without the TRC and Form 10F in hand and then trying to claim treaty positions retrospectively. Plan the paperwork before the filing window opens, not after.

10. The working summary

Before you assume DTAA "just sorts itself out," walk the order of Article 4(2) on a single sheet for your own facts:

1. Where is a permanent home available to me?
2. If both — where are my family + economic ties closer?
3. If unclear — where do I actually spend more time, in pattern?
4. If still unclear — what passport do I hold?
5. If still unclear — invoke MAP via Form 55 (rare)

Stop at the first clean answer. Document the facts you used. Keep the TRC and Form 10F in the file. Hand the sheet to your CA. The tie-breaker is mechanical once you accept that the order is not negotiable.

A note on what this is. This article is one returnee's working notes, not personalised advice. Numbers age. Rules change. The only person who can sign off on your specific case is a qualified cross-border chartered accountant looking at your full facts. Use this as a checklist of questions to take to that conversation, not as the answer.

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Sources:

• India-US Double Taxation Avoidance Agreement, Article 4 — definition of resident and tie-breaker rule. Treaty document index (IRS — India Tax Treaty Documents)
• Income-tax Act, 1961 — Section 6 (residential status), Section 6(1A) (deemed residence), Section 6(6) (RNOR), Section 90(4) and 90(5) (TRC and Form 10F) (India Code PDF)
• US substantial presence test (IRS)
• US tax treaties overview — IRS Publication 901 (IRS PDF)
• Form 8802 — Application for US Residency Certification (Form 6166) (IRS)
• Income-tax e-portal for Form 10F filing (eportal.incometax.gov.in)
• Income-tax Department India (incometaxindia.gov.in)