S

Reduces the income subject to tax and varies depending on filing status, age, blindness, and dependency.

For dependency test purposes, support includes food, clothing, shelter, education, medical and dental care, recreation, and transportation.

Self-employment income minus self-employment expenses, when self-employment income is greater than self-employment expenses.

Similar to Social Security and Medicare taxes. The self-employment tax rate is 15.3 percent of self-employment profit. The self-employment tax is calculated on Schedule SE—Self-Employment Tax.

If on the last day of the year, you are unmarried or legally separated from your spouse under a divorce or separate maintenance decree and you do not qualify for another filing status.

A tax on goods such as tobacco and alcohol.

Provides benefits for retired workers and their dependents as well as for the disabled and their dependents. Also known as the Federal Insurance Contributions Act (FICA) tax.

Develops software for the purposes of (1) formatting electronic tax return information according to IRS specifications, and/or (2) transmitting electronic tax return information directly to the IRS.

Self-employment income minus self-employment expenses, when self-employment income is less than self-employment expenses.

Compensation received by an employee for services performed. A salary is a fixed sum paid for a specific period of time worked, such as weekly or monthly.