Last verified: August 31, 2026. Deadline: October 15, 2026 (extended). Not tax or legal advice.
If you filed Form 4868 for an automatic six-month extension on your 2025 US individual tax return, your final deadline is October 15, 2026. For NRIs with cross-border complexity — Indian rental, capital gains on Indian mutual funds, foreign tax credits, FBAR obligations — this is the day the return must be complete, not just paid.
Here is the cross-border NRI filing guide for the October 15 extended deadline.
What Extension Actually Bought You
Filing Form 4868 by April 15 extended the filing deadline to October 15. It did NOT extend the payment deadline. If you owed tax on April 15 and did not pay, penalty + interest have been accruing since April.
If you overpaid via withholding or extension estimate: no penalty, and your refund is safe.
If you underpaid: file the return as accurately as possible now to stop the failure-to-pay penalty from accruing further.
What Needs to Be on the Return
1. Worldwide income
US residents (green card holders, citizens, resident aliens under substantial-presence test) report worldwide income:
- US W-2 wages + self-employment income
- US interest, dividends, capital gains
- Indian rental income (net of Indian expenses, in USD)
- Indian capital gains (shares, mutual funds, real estate — separately)
- Indian dividend, interest (NRE, NRO, FCNR, PPF interest if applicable)
- Cryptocurrency gains from any exchange
2. Foreign Tax Credit (Form 1116)
Claim credit for Indian taxes actually paid on the same income. Fill out Form 1116 for each income category:
- Passive (rental, dividend, interest, capital gain)
- General category (salary, business)
- Section 951A (GILTI — usually only for business owners)
3. Foreign Bank Account Report (Form 8938 / FATCA)
If total foreign financial assets exceeded $200,000 at year-end 2025 (single filer overseas), or $50,000+ at year-end 2025 (single filer in US), Form 8938 goes with the 1040. See our separate FBAR guide for the separate Treasury filing.
4. Passive Foreign Investment Company (PFIC) treatment
Indian mutual funds are generally classified as PFICs under US tax law. This is the single most common cross-border trap for NRIs. PFIC treatment options:
- QEF election: requires the fund to provide qualifying data — usually not available for Indian funds.
- Mark-to-market election: report gains as ordinary income annually.
- Default excess-distribution regime: highly punitive; treats all gains as accumulated over holding period and taxes at highest rates + interest.
File Form 8621 for each Indian mutual fund holding. A single missed 8621 filing on an active PFIC creates a permanent audit trail.
5. Cryptocurrency reporting
All crypto transactions — sale, exchange, spend — go on Form 8949 + Schedule D. Indian exchange holdings that moved to US wallets are still US-reportable at the transfer basis.
NRI-Specific Traps
Indian PPF interest
The IRS considers PPF interest US-taxable each year, even though it accrues within a locked account you cannot access. Report accrued interest annually on Schedule B.
Indian mutual fund SIP monthly investments
Each monthly SIP is a separate PFIC transaction. If you have a 12-month SIP + 6-month SIP + 3-month SIP across multiple funds, you may owe 20+ separate Form 8621 disclosures. Consult a cross-border CPA.
Rental property depreciation
US tax law requires depreciation on Indian rental property to be tracked. When you eventually sell, recapture applies. If you have not been depreciating, you cannot skip it going forward — it's deemed taken whether claimed or not.
Section 962 election for business owners
If you own more than 10% of an Indian company (LLP, Pvt Ltd), Subpart F and GILTI apply. This is deep water — a specialist is required.
What to Do This Week (Sept 1-7)
- Compile complete 2025 income documentation for all Indian sources — bank statements, mutual fund statements, real estate rental records, TDS certificates.
- Convert all figures to USD using the year-end exchange rate (published by US Treasury; roughly 82.5-85 INR/USD for December 2025).
- Identify every Indian financial account for FBAR + Form 8938 checklist.
- Identify every PFIC holding for Form 8621 checklist.
- Schedule a CPA appointment by September 15 at the latest.
What to Do the Week of October 15
- Review the completed return line-by-line with your CPA.
- Confirm Form 1116 (foreign tax credit) reflects actual Indian taxes paid.
- Confirm Form 8621 filed for each PFIC.
- Confirm Form 8938 filed if applicable.
- Confirm FBAR filed separately by October 15 (Treasury filing).
- E-file the 1040 by 11:59 PM local time October 15.
What If You Cannot Complete by October 15
There is no second automatic extension for individuals. If your return is not ready:
- File the return with your best-available data. You can amend later.
- Pay any tax owed to stop the failure-to-pay penalty.
- Do NOT file zero and skip — the failure-to-file penalty is more severe than any amendment cost.
Common Mistakes
- Missing PFIC Form 8621 filings for Indian mutual funds.
- Not depreciating Indian rental property.
- Not converting to USD at the correct rate.
- Confusing FBAR (Treasury) with Form 8938 (IRS) — filing one but not the other.
- Assuming Indian TDS eliminates US tax — TDS provides a credit, not an exemption.
Companion Reading
- US NRI Money & Compliance Hub 2026
- NRI Tax Filing 2026: The US-India Calendar, RNOR Rules and the Mistakes That Cost You
- October 15, 2026 US FBAR Deadline: What NRIs Must Report
- September 15, 2026 US Q3 Estimated Tax Deadline: NRI Filer Guide
This is a procedural overview, not tax or legal advice. Cross-border US-India tax situations are among the most complex individual tax scenarios; a licensed CPA with NRI experience is warranted for anything beyond a simple W-2 return.