Cross-Border Taxes & DTAA
The Calendar Mismatch Nightmare
The single biggest headache for returning expats in their first two years is the total misalignment of tax calendars between the US and India. You will be forced to prorate your income mathematically.
🇺🇸 US Tax Year
January 1st to December 31st.
You file your IRS Form 1040 by April 15th of the following year. Income is based strictly on the calendar year.
🇮🇳 Indian Financial Year (FY)
April 1st to March 31st.
You file your ITR (Income Tax Return) by July 31st. The year is denoted as FY (e.g., FY 2026-27) or Assessment Year (AY 2027-28).
What this means: When you file your US taxes, you cannot simply hand your CPA an Indian "Form 16" (W-2 equivalent) because it spans April to March. You must calculate exactly how many Indian paychecks fell between Jan 1 and Dec 31.
Double Taxation Avoidance Agreement (DTAA)
How it Protects You
The US and India have a comprehensive DTAA treaty. The fundamental rule is: You pay taxes first to the country where the income was generated, and you claim a credit for those taxes in your country of citizenship/residence. You do not pay taxes twice on the same dollar.
IRS Form 1116 (Foreign Tax Credit)
If you are a US Citizen/Green Card holder living in India, you will pay Indian taxes on your Indian salary. When you file your US 1040, you declare that Indian salary, calculate the US tax owed, and then use Form 1116 to apply a credit for the taxes you already paid to the Indian government. Since Indian tax brackets are generally higher than US brackets, your US tax liability on that income usually drops to $0.
IRS Form 2555 (FEIE)
Alternatively, you can use the Foreign Earned Income Exclusion (FEIE) to simply exclude the first ~$120,000 of your foreign-earned salary from US taxation entirely. Discuss with your CPA whether FTC or FEIE is mathematically better for your specific situation.
The State Tax Trap (California, NY, NJ)
WARNING: The US-India DTAA treaty only applies to Federal Taxes (IRS). It does not bind individual US states.
- If you move to India from a high-tax state like California, the Franchise Tax Board (FTB) may still consider you a California resident if you maintain "ties" to the state (e.g., keeping a CA driver's license, voting registration, or property).
- If they deem you a resident, California will attempt to tax your worldwide (Indian) income, and they will not honor the DTAA tax credits.
- Action Step: Sever all legal domicile ties to high-tax states before moving. Use a virtual mailbox in a no-income-tax state (like Texas, Florida, or South Dakota) as your final US address.