Reading it

Unbilled is billable time not yet stamped by Bill a period. That is the number that is worth money to you today.

⚠ Non-billable time is counted separately and is never in the amount. It is shown because knowing how much unbillable work an engagement absorbs is the point of tracking it at all.

⚠ The amount is computed at the engagement's CURRENT rate, not the rate in force when each hour was logged — the rate lives on the engagement, not on the entry. If you raised your rate mid-engagement, this revalues old unbilled hours upward. Open an engagement says how to avoid that: a second engagement.

⚠ Money is rounded once, here, to two decimals. Minutes are stored exactly; nothing accumulates rounding across entries because the conversion happens on the total, not per row.

⛔ This groups by task and rounds per group exactly as bill-period does, so the figure here is the figure you will bill. Rounding once on the grand total instead would make this preview disagree with the invoice by a penny or two — which is worse than either rule on its own, because you would not know which one was wrong.

⛔⛔ THE HOURS AND THE ENTRY COUNT ARE COMPLETE; THE MONEY BREAKDOWN COVERS THE ENTRIES FETCHED. They come from two different places on purpose. The totals are computed by the store over every matching row (entry.unbilled_rollup), so they do not silently shrink when you have more unbilled work than one page holds — which is exactly what a page-derived total used to do, and it was understating money owed. The per-task breakdown still needs the rows themselves, so it shows what the limit fetched.

⚠ When the two disagree the card says so and warns. Raise the limit and re-run to make the amount complete. A quiet smaller number is the failure worth avoiding here: you would invoice it.