A minister's housing arrangement has two halves. For SE tax, an approved Form 4361 exemption reaches only ministerial earnings; a side business stays in SE tax. For income tax, a rental or parsonage allowance is excluded only up to the smallest of three figures: the amount actually used for housing, the amount officially designated, and the fair rental value including furnishings and utilities. Any designated amount above the smallest is an excess allowance in wages, and the excess test runs against the smallest of reasonable salary, fair rental value plus utilities, and amount actually used. Housing treated this way still allows mortgage-interest and tax deductions as itemized deductions.
Worked example
Rev. Cole's reasonable salary is $40,000, above the housing figures. He is designated $18,000, spends $17,000, with rental value of $17,500. The exclusion is $17,000, the smallest. The $1,000 excess over amount used stays in wages. Under an approved exemption, the ministry-related base leaves SE tax while a $4,000 non-ministerial profit remains subject to SE tax.