America 250- Income Taxes Present

 

As I noted in last week’s post, we are in the final stretch of 2025 income tax season and I am teaching a new class called Income Taxes: Past, Present, and Future on April 15 as a small part of the nationwide America 250 effort. Previously, I described past history of income taxes in America.

This post discusses class highlights relating to current income tax laws and policies.

 

Gross and Adjusted Gross Income (AGI)- Under current law, taxpayers start out with their gross (total) income from sources such as wages, dividends, taxable interest, business income, alimony received, and required minimum distributions from retirement plans. Adjustments to income, often referred to as “above the line deductions,” include educator expenses, student loan interest, 50% of self-employment tax, health insurance for self-employed workers, and retirement plan contributions.

 

Individual Income Tax Rates- The U.S. federal income tax system uses progressive tax rates, meaning higher levels of income are taxed at higher percentages. As of 2026, the tax brackets range from 10% to 37%. Each rate applies only to income within its bracket, so taxpayers pay gradually higher rates as their taxable income increases.

 

Long-Term Capital Gains- Long-term capital gains are taxed at preferential rates of 0%, 15%, or 20%, depending on taxable income and tax filing status. Long-term capital gains are calculated by subtracting the cost basis (usually the initial purchase price plus additional deposits such as reinvested dividends) from the selling price of an asset held longer than one year.

 

Standard Deduction- The standard deduction is a fixed amount that taxpayers can subtract from their AGI before calculating federal income tax. It reduces taxable income without requiring taxpayers to itemize individual deductions. For 2025 returns filed in 2026, the standard deduction is $15,750 for single filers, $31,500 for married couples filing jointly, and $23,625 for heads of household. Taxpayers age 65 or older or blind may claim an additional standard deduction amount.

 

Senior Tax Deductions- There is an additional standard deduction available to taxpayers age 65 or older that reduces taxable income beyond the regular standard deduction. For 2025 tax returns, the extra deduction is $2,000 for single filers and $1,600 per eligible spouse in married couples filing jointly. The bonus senior deduction under the OBBBA tax bill is an additional temporary increase to the standard deduction designed to reduce taxable income for income-eligible older adults.

 

Required Minimum Distributions (RMDs)- RMDs originated with the creation of individual retirement accounts in 1974. They are the minimum amounts that retirees must withdraw each year from most tax-deferred retirement accounts, such as traditional IRAs and employer savings plans. Under the SECURE 2.0 Act, RMDs generally begin at age 73. The required withdrawal is calculated using IRS life-expectancy tables based on age and account balance at the end of the previous year.