1. Expenses or costs that cannot be subtracted from income when calculating taxable income or tax liability.
Usage: Usually used in plural form; Tax/accounting context

Examples

• Personal entertainment expenses are nondeductibles for most taxpayers.
• The accountant identified which medical costs were nondeductibles under current tax law.
• Nondeductibles reduce the amount you can claim as a tax deduction.
• Many homeowners are surprised to learn that certain home improvement costs are nondeductibles.
• The IRS maintains a detailed list of nondeductibles for business expenses.
• Meals and entertainment have become increasingly classified as nondeductibles in recent tax reforms.