income taxesTaxes on income, both earned (salaries, wages, tips, commissions) and unearned (interest, dividends).
independent contractorPerforms services for others. The recipients of the services do not control the means or methods the independent contractor uses to accomplish the work.
indirect taxA tax that can be shifted to others, such as business property taxes.
infant industryA new or developing domestic industry whose costs of production are higher than those of established firms in the same industry in other countries.
InflationA condition of increasing prices. Inflation is generally measured by the Consumer Price Index.
InterestThe term interest is used to describe the cost of using money, a right, share, or title in property.
interest incomeThe income a person receives from certain bank accounts or from lending money to someone else.
Intermediate Service Provider (ISP)Assists in processing tax return information between the ERO (or the taxpayer, in the case of online filing) and the Transmitter.
Investment IncomeThe equity dividends, bond interest, and/or cash interest paid on an investment.
IRS e-fileRefers to the preparation and transmission of tax return information to the IRS using telephone lines or a computer with a modem or Internet access.