Income tax is a tax on income from labor (wages), investments (dividends, capital gains, interest), and business operations. The US has federal income tax (graduated brackets 10-37%), state income tax (rates from 0% to 13.3%), and local income tax in some cities (NYC, Philadelphia). FICA tax (Social Security + Medicare) is separate. Federal income tax is filed annually via Form 1040 by April 15 (or October 15 with extension). Tax planning strategies — maxing 401(k), Roth conversions, tax-loss harvesting, charitable bunching — focus largely on income tax optimization. Effective rates are typically far lower than marginal rates for most filers.
Article
Alternative Minimum Tax
Alternative Minimum Tax (AMT) is a parallel tax system designed to ensure high-income taxpayers pay a minimum. Calculate…
American Opportunity Credit
The American Opportunity Credit provides up to $2,500 per student per year for the first four years of…
Bunching Deductions
Bunching deductions is the strategy of concentrating itemizable expenses into alternating years to exceed the standard deduction in…
Charitable Contribution Deduction
Charitable contribution deductions allow taxpayers who itemize to deduct cash donations to qualified 501(c)(3) charities up to 60%…
Child Tax Credit
The Child Tax Credit (CTC) provides $2,000 per qualifying child under 17, with $1,600 refundable as the Additional…
Deductible Business Expense
A deductible business expense must be both 'ordinary' (common in your industry) and 'necessary' (helpful to the business).…
Income Tax
August 22, 2026 · Aditya Gupta
Tax
Related terms
Alternative Minimum Tax
Alternative Minimum Tax (AMT) is a parallel tax system designed to ensure high-income taxpayers pay a minimum. Calculate…
American Opportunity Credit
The American Opportunity Credit provides up to $2,500 per student per year for the first four years of…
Bunching Deductions
Bunching deductions is the strategy of concentrating itemizable expenses into alternating years to exceed the standard deduction in…
Charitable Contribution Deduction
Charitable contribution deductions allow taxpayers who itemize to deduct cash donations to qualified 501(c)(3) charities up to 60%…
Child Tax Credit
The Child Tax Credit (CTC) provides $2,000 per qualifying child under 17, with $1,600 refundable as the Additional…
Deductible Business Expense
A deductible business expense must be both 'ordinary' (common in your industry) and 'necessary' (helpful to the business).…
