US-India DTAA: The Numbers That Matter
- •Article 11 of the US-India tax treaty caps Indian TDS on interest at 10% for bank/financial institution deposits (like NRO FDs) and 15% for other interest — versus the standard ~31.2% TDS with no treaty certification.
- •The treaty rate only applies if you file a Tax Residency Certificate (TRC) from the IRS plus Form 10F (Form 41 from FY 2026-27) with your Indian bank.
- •The US Foreign Tax Credit (Form 1116) is capped by the Section 904 limitation: (foreign-source taxable income ÷ total taxable income) × total US tax liability — not simply whatever India withheld.
- •If you paid more Indian tax than the limitation allows, the excess isn't lost — it carries back 1 year and forward up to 10 years.
- •A de minimis exception lets you skip Form 1116 entirely if total foreign tax is $300 or less (single/MFS) or $600 or less (MFJ) — but you give up carryover rights for that year.
The Real Problem This Solves
Most NRIs know India taxes their NRO interest and the US taxes their worldwide income, and vaguely know "the DTAA prevents double taxation." What almost nobody works out ahead of time is that the US Foreign Tax Credit doesn't simply refund whatever India withheld — it's capped by a specific formula, and overpaying Indian TDS beyond that cap doesn't come back as cash, it becomes a carryforward credit you may or may not ever use.
This calculator runs the actual Section 904 limitation against your real numbers, so you can see exactly how much of your Indian tax is creditable this year, whether filing a Tax Residency Certificate to unlock the lower treaty rate is worth the paperwork, and whether you'll need Form 1116 at all.
How the Foreign Tax Credit Limitation Actually Works
The credit isn't "Indian tax paid, refunded dollar for dollar." It's the lesser of the Indian tax you paid, or the US tax attributable to that same income — calculated as (foreign-source income ÷ total taxable income) × total US tax before credits.
Example: Priya has $8,000 in NRO interest this year, $150,000 in total taxable income, and $28,000 in total US tax before credits. Her FTC limitation is ($8,000 ÷ $150,000) × $28,000 = $1,493.
If she filed a TRC and Form 10F, her bank withheld the treaty rate of 10%: $800 in Indian tax. Since $800 is under her $1,493 limitation, it's fully creditable — she still owes $693 in additional US tax on this income, but nothing is wasted.
If she hadn't filed the TRC, her bank would have withheld the standard 31.2%: $2,496. Her limitation is still $1,493 (it doesn't depend on how much India withheld), so only $1,493 is creditable this year — she owes $0 additional US tax, but the remaining $1,003 becomes a carryforward credit that's only useful if she has excess foreign-source tax capacity in a future year. In practice, filing the TRC trades a small amount of additional US tax due now for avoiding a much larger amount of Indian tax that's tied up as an uncertain future credit.
| Scenario | Indian Tax Paid | FTC Allowed | Additional US Tax Due | Excess Credit (carryforward) |
|---|---|---|---|---|
| TRC + Form 10F filed (10% treaty rate) | $800 | $800 | $693 | $0 |
| No TRC filed (31.2% standard TDS) | $2,496 | $1,493 | $0 | $1,003 |
Frequently Asked Questions
Does the DTAA mean I pay zero tax on my Indian income?
No — the treaty and the Foreign Tax Credit together prevent the same income from being taxed twice at the full rate in both countries, but you generally still end up paying tax at whichever country's rate is higher, just once instead of twice.
How do I actually get the lower 10%/15% treaty rate instead of standard TDS?
File a Tax Residency Certificate (TRC) from the IRS, along with Form 10F (Form 41 from FY 2026-27), with your Indian bank before the interest is paid. Without it, the bank is required to withhold at the standard rate regardless of the treaty.
What if my bank already withheld the standard 31.2% and I didn't file a TRC in time?
You can still claim the treaty benefit by filing an Indian income tax return and claiming a refund of the excess TDS, though this takes longer than avoiding the overwithholding in the first place through your bank.
Do I need to file Form 1116 every year?
Only if your total foreign tax exceeds the de minimis threshold ($300 single/MFS, $600 MFJ) or you're carrying forward excess credit from a prior year. Below that threshold, with all passive foreign income, you can claim the credit directly without the form — but you lose the ability to carry any excess forward for that year.
What happens to excess credit I can't use this year?
It carries back 1 year (you can amend a prior return) or forward up to 10 years, applied against future years' foreign tax credit limitation in chronological order. If it's never used within that window, it expires.
Does this apply to NRE account interest too?
No — NRE interest is entirely tax-exempt in India, so there's no Indian tax withheld and nothing to credit. This calculator is specifically for taxable Indian-source income like NRO interest, where India withholds tax that the US Foreign Tax Credit then needs to offset.