Financing
You can size a source from the budget it finances, and know which reference survives a budget being edited.
Financing is nearly always a proportion of cost. A source amount that references the budget stays right when the budget changes — which it will, repeatedly.
**Every one of these resolves against the linked budget**, not against the plan. That is the whole point: the plan reads the budget it finances. A different three functions total the plan's **own** sources instead — see [aggregate financing sources in a formula](/kb/article/aggregate-financing-sources-in-a-formula).
| Function | What it is | | -------- | ----------------------------------------------------------------- | | `NPC` | net production costs — the sum of the categories, without markups | | `GT` | the grand total — the bottom line of the budget |
Use these for anything defined against the size of the film: *20% of the net production costs*, *a gap financier taking the remainder of the grand total*.
`ACCOUNT("3.01")` is the total of a single budget account.
Use it when a financier funds a specific thing — an equipment subsidy against the camera account, a regional grant against local crew.
`SUM_COMPANY("Firma A")` totals everything in the budget assigned to that company. `SUM_TAG("regional")` totals everything carrying that tag.
These are the strongest tools for subsidy work, because a regional fund's rule is almost exactly a tag: *spend in this state*. Tag the accounts once in the budget, and the fund's amount writes itself.
`COUNT_COMPANY` and `COUNT_TAG` count rather than sum, for a rule expressed per item.
Work Phases, Subtotals and your own variables are the linked budget's — see [use variables in a financing plan](/kb/article/use-variables-in-a-financing-plan).
References resolve **by name or number**, so what breaks them is renaming.
- **`ACCOUNT` is by number, and renumbering rewrites numbers.** Renumbering the budget can therefore break financing formulas that point into it — check the plan afterwards. - **`SUM_TAG` and `SUM_COMPANY` are by name.** Renaming a tag in the budget orphans the formula. - **Prefer a tag to a list of accounts.** `SUM_TAG("Bayern")` survives accounts being added, split and renumbered; `ACCOUNT("3.01") + ACCOUNT("3.02") + ACCOUNT("3.03")` does not, and worse, it silently stops counting anything new.
Copying a plan onto a different budget copies formulas **as text** — they are not rewritten. A reference to an account the new budget does not have resolves blank.
The copy warns you up front how many such references there are, but it cannot fix them. Afterwards, turn on the fx view and work through the blanks — see [relink a plan to another budget](/kb/article/relink-a-plan-to-another-budget).
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