The main difference between a flexible budget and a static budget is that the static budget is not adjusted for changes in the level of activity.

Flexible Budget

A budget that adjusts or flexes with changes in volume or activity levels, used to compare actual performance against what should have occurred at the actual level of activity.

Static Budget

A fixed budget that does not change with the level of activity or production volume, often used for planning purposes.

Level Of Activity

A measurement of the volume of production or operations within a business, which can affect various costs and efficiency metrics.