EMPLOYMENT TAX

Rev. Rul. 2006–56, page 874. Excess per diem allowances. This ruling provides that where an expense allowance arrangement has no mechanism or process to track allowances paid and routinely pays per diem allowances in excess of the federal per diem rates without requiring actual substantiation of all the expenses or repayment of the excess amount, all payments made under the arrangement will be treated as made under a nonaccountable plan.

Notice 2006–102, page 909. 2007 social security contribution and benefit base; do- mestic employee coverage threshold. The Commissioner of the Social Security Administration has announced (1) the OASDI contribution and benefit base for remuneration paid in 2007 and self-employment income earned in taxable years beginning in 2007, and (2) the domestic employee coverage threshold amount for 2007.