How campaigns set and stick to a budget
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Setting a budget means matching planned spending against realistically expected income, ideally with some built in caution rather than assuming the most optimistic funding scenario will actually come to pass exactly as hoped. Optimistic assumptions have a way of quietly becoming the default plan unless someone actively resists them.
Sticking to a budget requires regular review against actual spending, since a budget checked only once at the start of a campaign provides little real protection against gradual overspending that only becomes obvious once it is already too late to correct easily. Small, regular checks catch drift long before it becomes a crisis.
When circumstances genuinely require departing from a budget, documenting that decision and its reasoning, rather than quietly adjusting spending without comment, keeps the whole team accountable and preserves the budget's usefulness as a genuine planning tool going forward. Silent departures from a budget tend to erode its usefulness altogether.