Definition starting with I

The IRS Publication 939 definition is the Internal Revenue Service's guide to the General Rule for Pensions and Annuities, which explains how to split each payment you receive into a...

IRS Publication 561 donated property value rules center on one core idea: the fair market value (FMV) of any non-cash item you give to a qualified charity on the date...

The credit for the elderly or the disabled is a federal tax credit that can reduce the tax you owe if you are age 65 or older, or if you...

IRS Publication 501 definition is the IRS guide for dependents, standard deduction, and filing information for tax returns. It is the official resource that helps you determine who must file...

According to the IRS Publication 17 definition, it is the IRS's general guide for filing a federal individual income tax return. The current 2025 version, posted on January 21, 2026,...

The definition of IRS Form 4868 is the official IRS document you file to request an automatic extension of time to submit your U.S. individual income tax return, giving you...

An irrevocable beneficiary is a person or entity named on a life insurance policy whose designation cannot be changed or removed without that beneficiary’s written consent. This irrevocable beneficiary definition...

An irrevocable letter of credit (ILOC) is a bank’s definite, written commitment to pay a beneficiary a stated amount, provided the beneficiary presents the required documents or demand before the...

Irrational exuberance is a term used to describe excessive investor optimism that pushes asset prices above levels justified by fundamentals. It represents a state of market euphoria where enthusiasm, rather...

Investment income tax treatment in the U.S. depends on the type of income you receive, interest, dividends, capital gains, and rental or royalty income, and each type has its own...

Intangible personal property is property with value that is not physical; the value comes from rights, claims, or legal interests rather than something you can touch. In personal finance and...

An insurance score is a credit-based number insurers use to estimate the likelihood of future insurance losses or claims, distinct from a traditional credit score used for lending. This score...