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Necessary

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Nontaxable Income Nonresident Alien Notice and Demand for Payment Nontaxable Exchange Negligence Necessary Net Operating Loss (NOL) Noncustodial Parent Nonbusiness Bad Debts Nontaxable Earned Income Nonrefundable Credit Nonrecourse Debt Nontaxable Distributions

Any expense that is required in order to operate or advance a business or investment.