Simplified per-diem increase for post-Sept. 30, 2018 travel. An employer may pay a per-diem amount to an employee on business-travel status instead of reimbursing actual substantiated expenses for away-from-home lodging, meal and incidental expenses (M&IE). If the rate paid doesn’t exceed the IRS-approved maximums, and the employee provides simplified substantiation, the reimbursement isn’t subject to income- or payroll-tax withholding and isn’t reported on the employee’s Form W-2. Instead of using actual per-diems, employers may use a simplified “high-low” per-diem, under which there is one uniform per-diem rate for all “high-cost” areas within the continental U.S. (CONUS), and another per-diem rate for all other areas within CONUS. The IRS released the “high-low” simplified per-diem rates for post-Sept. 30, 2018, travel. Under the optional high-low method for post-Sept. 30, 2018 travel, the high-cost-area per diem is $287 (up from $284), consisting of $216 for lodging and $71 for M&IE. The per-diem for all other localities is $195 (up from $191), consisting of $135 for lodging and $60 for M&IE.

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