Nondeductible

adj, noun

adj, noun ·5 syllables ·Rare ·Advanced level

Definitions

Noun
  1. 1
    Any expense that cannot be deducted for income tax purposes.
Adjective
  1. 1
    That cannot be deducted for income tax purposes, and that tax has to be paid on. not-comparable

    "Since you fund a nondeductible IRA with already-taxed dollars, you might figure you wouldn't pay any income taxes on the conversion."

Adjective
  1. 1
    not allowable as a deduction wordnet

Example

More examples

"Since you fund a nondeductible IRA with already-taxed dollars, you might figure you wouldn't pay any income taxes on the conversion."

Etymology

From non- + deductible.

Related phrases

income tax

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.