Commitments and obligations are in dollars, based on an estimate of the foreign exchange rate at the time of payment. FCOs should allow for potential differences from fluctuations in exchange rates. Personnel compensation and benefits differences . Payroll costs are estimated and committed based on prior payroll amounts. Actual payroll costs reported as obligated usually will differ.
Apportionments expire at the end of the fiscal year.
Since allotments must be within the ceilings of amounts apportioned, allotments also expire at the end of the fiscal year. 2.Allotted funds are available for new obligations only within the fiscal year of the allotment. Unobligated balances are carried over, and may be reallotted in the new fiscal year after OMB apportionment. Limitations 1.Appropriated funds are subject to purpose limitations specified by law and GAO guidance. FCOs are responsible for reviewing commitment documents to ensure appropriate and authorized expenditures b.