Definition. The total sum of money due for the purchase of a good or service that must be paid by the set due date. In relation to taxes, the money owed to the government when required tax amount totals a greater number than total tax payments previously made.efinition. The total sum of money due for the purchase of a good or service that must be paid by the set due date. In relation to taxes, the money owed to the government when required tax amount totals a greater number than total tax payments previously made.
The Internal Revenue Service has set the special per diem rates starting Oct. 1, 2015, which taxpayers can use to substantiate the amount of expenses for lodging, meals, and incidental expenses when traveling away from home.
The IRS has set the special per diem rates for substantiating certain business expenses taxpayers incur when traveling away from home in 2013 and 2014. The per diem rates went into effect October 1, 2013.IRS Notice 2013-65 includes special transportation industry meal and incidental expenses rates, the rate for the incidental expenses-only deduction, and the rates and list of high-cost localities for purposes of the high-low substantiation method.he IRS has set the special per diem rates for substantiating certain business expenses taxpayers incur when traveling away from home in 2013 and 2014. The per diem rates went into effect October 1, 2013.