Planning Horizon

The planning horizon is the amount of time an organisation will look into the future when preparing a strategic plan. Many commercial companies use a five-year planning horizon, but other organisations such as the Forestry Commission in the UK have to use a much longer planning horizon to form effective plans.
See more at Wikipedia.org...

The length of time a model projects into the future.

the total timespan covered by a firm's marketing plans; the length of the planning horizon is commonly determined by the degree of uncertainty in the environment.