What Is the Green Card Substantial Presence Test?
U.S. Green Card Residents Pay Tax on Their Worldwide Income
An Overview of the U.S. Federal tax System
Tax Deductions and Credits
The federal tax works sort of a mathematics formula that appears one thing like this:
Total financial gain minus deductions = taxable financial gain.
Taxable financial gain increased by the relevant tax rates = the federal tax.
Federal tax minus tax credits = net federal tax.