Income tax systems compared across the United States, Canada and India differ first on who is taxed, and only second on the rates. The United States taxes its citizens and residents on worldwide income wherever they live. Canada and India tax residents on worldwide income and non-residents on income with a local connection. This page sets the three systems side by side for the 2025 filing season, shows how the rate ladders work with a small example and explains what that means if you live, work or invest in more than one country.
Income tax systems compared: who is taxed on what?
| Question | United States | Canada | India |
|---|---|---|---|
| Basis of tax | Citizenship and residence | Residence | Residence |
| Residents taxed on | Worldwide income | Worldwide income | Worldwide income (for those ordinarily resident) |
| Non-residents taxed on | U.S.-source income, with a flat 30% or treaty rate on some passive income | Canadian-source income, with withholding on many payments | Income received in or arising in India |
| Citizens living abroad | Still file a U.S. return | Cease to be taxed once non-resident | Cease to be taxed on foreign income once non-resident |
| Intermediate status | Dual-status year of arrival or departure | Deemed resident or deemed non-resident rules | Resident but not ordinarily resident (RNOR) |
| Return forms | Form 1040 or 1040-NR | T1 | ITR-1 to ITR-4 and others |
The citizenship rule is the biggest difference. A U.S. citizen in Toronto and a green card holder in Mumbai still file U.S. returns, while a Canadian who becomes a non-resident of Canada generally stops being taxed there on foreign income. India's status for NRIs and RNORs depends on day counts and look-back years; see the residency tests compared.
How do the 2025 rate structures compare?
| Feature | United States (federal, single) | Canada (federal) | India (new regime, FY 2025-26) |
|---|---|---|---|
| First tier | 10% to $11,925 | 14.5% to $57,375 | Nil to Rs 4 lakh |
| Second tier | 12% to $48,475 | 20.5% to $114,750 | 5% from Rs 4 to 8 lakh |
| Third tier | 22% to $103,350 | 26% to $177,882 | 10% from Rs 8 to 12 lakh |
| Fourth tier | 24% to $197,300 | 29% to $253,414 | 15% from Rs 12 to 16 lakh |
| Fifth tier | 32% to $250,525 | 33% above $253,414 | 20% from Rs 16 to 20 lakh |
| Higher tiers | 35% to $626,350; 37% above | None | 25% from Rs 20 to 24 lakh; 30% above Rs 24 lakh |
| Basic reduction | 2025 standard deduction $15,750 single, $31,500 joint | Basic personal amount credit | Rs 75,000 standard deduction for salaried people; rebate so no tax up to Rs 12 lakh of ordinary income |
| Extra layers | State tax; Illinois is a flat 4.95% | Provincial tax that varies by province | 4% health and education cess, plus surcharge at high incomes |
The U.S. figures are the 2025 single-filer brackets published by the IRS, and the standard deductions are from Publication 17. The Canadian lowest rate is 14.5% for 2025 because it fell from 15% to 14% on July 1, 2025 and the full-year rate blends the two. India's slabs are from the Union Budget 2025-26 announcement, where "no income tax payable up to income of Rs. 12 lakh" excludes special-rate income such as capital gains. India also lets taxpayers choose an older regime with deductions, and your CA runs both. India's Income-tax Act, 2025 started on April 1, 2026, so income from that date is a "tax year 2026-27" under the new law; check with your CA what changed for that year.
Returns and double-tax relief
| Item | United States | Canada | India |
|---|---|---|---|
| Main individual return | Form 1040 (1040-NR for nonresidents) | T1 | ITR-1 for simple resident cases, ITR-2, ITR-3 or ITR-4 otherwise |
| Foreign tax credit | Form 1116 and limits by income category | Foreign tax credit forms with the T1 | Claimed through a prescribed form and the return; your CA confirms the form under the 2026 Rules |
| Treaty with the other two | Treaties with Canada and India | Treaties with the U.S. and India | Treaties with the U.S. and Canada |
| Foreign asset reporting | FBAR, Form 8938 | T1135 | Schedule FA |
India's e-filing portal says ITR-1 (Sahaj) is for resident individuals, not RNORs, with income up to Rs 50 lakh from salary or pension, one house property and other sources, and that it cannot be used by people with foreign assets or foreign income. Treaties allocate taxing rights and set rates on dividends, interest, royalties and pensions, but a treaty generally does not stop the U.S. from taxing its own citizens. Read the U.S.-India treaty guide and foreign tax credits across three countries.
What this means in practice
- Citizenship follows you. A U.S. citizen with Indian or Canadian income files in the U.S. and also in the country of residence, then uses credits to avoid double tax.
- Residents of two countries. Both can claim you, and the treaty tie-breaker decides. See residency tie-breakers.
- Different tax bases. A rupee-denominated slab, a progressive Canadian bracket and a U.S. bracket measure different things, so compare after-credit results only.
- Provincial and state tax. Illinois adds 4.95% on top of federal tax, while Ontario, British Columbia and other provinces set their own ladders.
- Timing and currency. Income is reported in a different year and a different currency in each country.
A worked example of the bracket ladders
These examples use different currencies and are not equivalent; they show how the ladders work. A single U.S. filer with $100,000 of 2025 taxable income pays 10% on the first $11,925 ($1,192.50), 12% on the next $36,550 ($4,386.00) and 22% on the remaining $51,525 ($11,335.50), for $16,914.00 of federal tax. A Canadian with CAD 100,000 of 2025 taxable income pays 14.5% on the first $57,375 and 20.5% on the next $42,625, about CAD 17,058 of federal tax before credits and provincial tax. An Indian resident with Rs 20 lakh of taxable income under the new regime for FY 2025-26 pays 5% on Rs 4 lakh (Rs 20,000), 10% on Rs 4 lakh (Rs 40,000), 15% on Rs 4 lakh (Rs 60,000) and 20% on Rs 4 lakh (Rs 80,000), Rs 2,00,000 before cess. Now imagine one person earning in all three: the credits, not the headline rates, decide the final bill.
Mistakes to avoid
- Assuming that leaving the U.S. ends U.S. tax filing for citizens and green card holders.
- Comparing rate tables without the standard deduction, credits, cess and surtaxes.
- Ignoring state and provincial tax.
- Using ITR-1 when you have foreign assets or foreign income.
- Claiming a foreign tax credit without sourcing the income correctly.
How we can help
Our Aurora, Illinois firm prepares the U.S. side and coordinates with your Canadian CPA and Indian CA so credits and income line up. See cross-border tax services, individual returns for newcomers and NRIs and the Canada tax system overview. More three-country tables are on the comparisons hub.
Frequently asked questions
Does India tax U.S. citizens who live in the U.S.?
India taxes a non-resident only on income received in or arising in India. A U.S. citizen who is not an Indian resident is taxed in India on Indian-source income only.
Do I pay tax in all three countries on the same income?
Possibly, but credits and treaties relieve most double tax. The order of taxing rights depends on the type of income and your residency in each country.
Which country has the highest rates?
It depends on income, deductions, credits and the state or provincial layer. A headline rate comparison is rarely useful.
Is the Canadian rate really 14.5%?
For the 2025 return the CRA shows 14.5% as the lowest federal rate because the rate dropped on July 1, 2025. Provincial tax is added.
What is the new regime in India?
It is the default slab system with lower rates and fewer deductions. See the India tax system overview.
Official sources
- IRS: Tax inflation adjustments for tax year 2025
- IRS: Publication 17
- CRA: Tax rates and income brackets, 2025
- PIB: New regime rates under Union Budget 2025-26
- Illinois Department of Revenue: Income tax rates
- Income Tax Department (India): Salaried individuals for AY 2026-27
This page summarizes public guidance in plain language. If anything here differs from the official source, the official source controls.
General information only. It is not tax, legal, accounting or immigration advice for your situation, and rules change; confirm the current rules with the official source or a licensed professional in the relevant country.