Economic Definition of planning period. Defined.
Offline Version: PDF
Term planning period Definition: The period of time in which a firm selects the profit-maximizing plant size in the long run when all inputs, especially capital, are variable. This is, in other words, another term for the long run, but applied to the adjustment using the long-run average cost curve.
Permalink: https://glossary.econguru.com/economic-term/planning+period