Specifically, rolling OIS is the OIS that will be implemented when the firm’s traditional budget is discontinued. It also eliminates the traditional rolling forecast and all its problems.The rolling OIS is developed during the OIS implementation phase when both the traditional budget and OIS are installed at the client.

Continuing with the rolling OIS process description, at the end of the first quarter of the Year 1, a quarterly OIS will be developed for the first quarter of Year 2 extending OIS back to a 4 quarter model. This process continues for the next three quarters

Then, at the end of Year 1, if the CFO/CEO aren’t yet ready to discontinue the traditional budget, the 4 quarters of the rolling OIS are replaced by the budget for Year 2  and the processes described in OIS Phase II (b) and OIS Phase II (c) repeat themselves.