Reading a budget you did not set

Most managers inherit a budget rather than build one, and are then held to it without anybody explaining how to read it.

The basic shape. A list of categories with a planned amount for the year, usually split by month or quarter, and an actual figure that accumulates against it.

Capital and operating spending are different. Buying equipment is capital and is treated differently from salaries and subscriptions, which are operating. Which pot something comes from changes what approval it needs and sometimes whether it is possible at all, and asking early saves a rejected request.

Committed and uncommitted. Money already contracted is gone even if it has not left the account, and a budget looking healthy with six months of committed spending ahead of it is not healthy.

Variance is the difference between planned and actual, and it is what you will be asked about. Both directions need explaining: overspending obviously, and significant underspending because it means the plan was wrong or something is not happening.

Phasing matters. A budget spread evenly across twelve months against spending that is seasonal produces alarming variances that mean nothing, and understanding your own phasing prevents a monthly conversation about a problem that does not exist.

Ask what the number was based on if you inherited it. Frequently it is last year plus a percentage, which means it encodes decisions nobody remembers making.