US Federal Income Tax Calculator for Non-Residents (2026/2027)
Calculate your Form 1040-NR tax liability for Effectively Connected Income (ECI) from US operations, software, or physical trade.
$45,000
Income generated from US trade, physical presence, or US employees.$10,000
Server costs, advertising, contractor fees, and operational overhead.Form 1040-NR Tax Summary
Gross US ECI Income:$45,000
Less Business Deductions:-$10,000
Net Taxable Income:$35,000
Effective Federal Tax Rate:11.3%
Estimated Form 1040-NR Tax Due
$3,968
Net After-Tax Income:$31,032
Real-Time Mathematical Audit
Live Step-by-Step Form 1040-NR Federal Tax Audit
Line-by-line proof of IRS 1040-NR progressive tax brackets and net take-home calculation.
Step 1: Gross ECI & Expense Deductions$35,000 Net
Gross ECI Revenue: $45,000 USD
Allowable Deductions: -$10,000 USD
Net Taxable Base: $35,000 USD
Step 2: Progressive IRS Brackets (10%-32%)11.3% Effective
10% Bracket ($0–$11.6k): $1,160
12% Bracket ($11.6k–$47.1k): $2,808
22%+ Higher Brackets: $0
Step 3: Total Form 1040-NR Tax LiabilityTax Due
Total Federal Tax Owed: $3,968 USD
IRS ITIN / SSN Obligation: Form W-7 ITIN Required
Step 4: Net After-Tax Take-Home IncomeNet Income
Net After-Tax Income Kept: $31,032 USD
Filing Deadline: June 15 (Form 1040-NR)
IRS 2026/2027 Non-Resident Alien Tax Brackets (Form 1040-NR)
| Tax Bracket | Single Non-Resident Income Bracket | Base Tax Owed | Marginal Tax Rate |
|---|---|---|---|
| 10% Bracket | $0 to $11,600 | $0 + 10% of amount | 10% |
| 12% Bracket | $11,601 to $47,150 | $1,160 + 12% over $11,600 | 12% |
| 22% Bracket | $47,151 to $100,525 | $5,426 + 22% over $47,150 | 22% |
Knowledge Base
Frequently Asked Questions (US Federal Income Tax)
ECI is income derived from a US trade or business, such as having physical employees in the US, maintaining a US warehouse/office, or providing in-person services inside the US. ECI is taxed at progressive US federal tax rates (10% to 37%) via Form 1040-NR.
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