Tax Glossary

Tax Glossary

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There are currently 13 Definitions in this directory beginning with the letter I.
Identity Protection PIN
There is a new field next to spouse's occupation at the bottom of Form 1040 labeled Identity Protection PIN. This is designed to help prevent refunds from being issued to an identity thief. It the taxpayer has been a victim of identity theft, verify the special PIN (6 digit IPPIN) is correct using CP01A Notice or see Form 1040 Instructions for more information.

Income Taxes
Taxes on income, both earned (for example, salaries, wages, tips, commissions) and unearned (for example, interest and dividends). Income taxes can be levied both on individuals (personal income tax) and businesses (business and corporate income taxes).

Independent Contractor
People who are in an independent trade, business, or profession in which they offer their services to the general public are generally independent contractors. The general rule is that an individual is an independent contractor if the payer has the right to control or direct only the result of the work and not what will be done and how it will be done. The earnings of a person who is working as an independent contractor are subject to self-employment tax.

Individual Retirement Arrangement (IRA)
A tax-sheltered retirement savings plan set up by the taxpayer.

Individual Taxpayer Identification Number (ITIN)
Income a person receives from certain financial accounts or from lending money to someone else.

Injured Spouse Relief
A provision of tax law that allows a taxpayer to get back his or her share of a joint overpayment when the overpayment was used to pay one spouse's past-due federal tax, state income tax, child support, spousal support, or federal non-tax debt, such as a student loan.

Innocent Spouse Relief
A provision of tax law that allows a taxpayer to be relieved of responsibility for paying tax, interest, and penalties if the taxpayer's spouse (or former spouse) improperly reported items or omitted items on a joint tax return.

Intake and Interview sheet
Form 13614-C used to conduct the initial interview and screen the taxpayer.

Interest Income
Income a person receives from certain financial accounts or from lending money to someone else.

Investment Income
Investment Income includes taxable interest and dividends, tax-exempt interest, capital gain net income, net income from rents and royalties not derived from a trade or business, and net income from passive activities

IRA
Individual Retirement Arrangement - A tax-sheltered savings plan set up by the taxpayer, generally for retirement income.

Itemized Deductions
Itemized deductions allow taxpayers to reduce their taxable income based on specific personal expenses. If the total itemized deductions are greater than the standard deduction, it will result in a lower taxable income and lower tax.

ITIN
Individual taxpayer identification number, issued by the IRS to individuals who are not eligible for a social security number.