Question

when are rolling budgets appropriate and inappropriate? what other factor must be considered when adopting a policy for using them?

Answer 1

A rolling budget is continually updated to add a new budget period as the most recent budget period is completed. Thus, the rolling budget involves the incremental extension of the existing budget model. By doing so, a business always has a budget that extends one year into the future.
This approach has the advantage of having someone constantly attend to the budget model and revise budget assumptions for the last incremental period of the budget. The downside of this approach is that it may not yield a budget that is more achievable than the traditional static budget, since the budget periods prior to the incremental month just added are not revised.