tax-deductibility en · NOUN
Etymology
From tax-deductible + -ity.
Meanings
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(uncountable) The state of something being tax-deductible.
Is it your opinion that basing tax deductibility on that sort of certification is indeed a workable program in the United States ?
1977, United States, Congress, House, Committee on Ways and Means, "Tax Home" of State Legislators and Deductibility of Expenses Allocated to Use of Dwelling to Provide Day Care Services, Hearing Before the Committee on Ways and Means, House of Representatives, Ninety-fifth Congress, First Session ... March 28, 1977, page 121: