CFR > Title 41 - Public Contracts and Property Management > SUBTITLE F—Federal Travel Regulation System > CHAPTER 301—TEMPORARY DUTY (TDY) TRAVEL ALLOWANCES (parts 301-1 to 301-76) > SUBCHAPTER B—ALLOWABLE TRAVEL EXPENSES (parts 301-10 to 301-31) > PART 301-11—PER DIEM EXPENSES > SUBPART D—Actual Expense (§301-11.300 to §301-11.306) > 301-11.304—What if my expenses are less than the authorized amount?