Federal Contracting Glossary
Period of Performance & Option Years
The time span over which a contractor must perform, typically structured as a base period plus government-exercisable option years.
Definition
The period of performance (PoP) is the time frame during which a contractor must deliver under a contract. Federal contracts are commonly structured as a base period (often one year) plus option years that the government may, at its sole discretion, choose to exercise — for example a "1 base + 4 option" structure giving a potential five-year total.
Options are exercised by the government, not the contractor, and only if it is in the government's interest and funds are available. The PoP structure affects pricing and evaluation: solicitations usually require offerors to price each option year, and the price evaluation often totals the base plus all options.
How this affects your proposal
Price every option period exactly as the schedule requires — the evaluation usually totals base plus all options, so an omitted or mispriced option can sink your price score. Don't book option-year revenue as certain.
Common questions about period of performance & option years
Who decides whether an option year is exercised?
The government, at its discretion. The contracting officer exercises an option only if it is in the government's interest, funds are available, and the option clause requirements are met.
Are option years included in the price evaluation?
Usually yes — agencies commonly evaluate the total of base plus all option periods even though options are not guaranteed, so all priced option CLINs must be completed. Confirm in Section M.
Related terms
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