Planning premises means systemic and logical estimate for the future factors affecting planning.
According to Dr. G. R. Terry, ”planning premise is the assumptions providing a background against which the estimated events affecting the planning will take place”.
Koontz and O’Donnel, “a key part of planning is the establishment of clear planning premises. To assure co-ordination among all managers who make plans in organization, these premises should be used by all concern persons premises guides planning".