A short, early estimate of the period's key results, issued days after period end, before the books are fully closed.
A flash report gives leaders the headline numbers, such as revenue, gross margin, cash and bookings, within a few days of period end, long before the full close and management reporting package. It trades precision for speed and should say which figures are actuals and which are estimates.
Take actuals from systems that close fast (billing, bank, orders), estimate what is still open (accruals, late invoices), and show each figure against budget and last period, flagged as actual or estimate.
On day three after month end, the flash shows revenue of $1,240,000. The final close lands at $1,252,000, a difference of $12,000, under 1% of the final figure, which is within the tolerance most teams set.
Estimates that are never compared with the final numbers, so the same bias repeats every month, and a flash that grows into a second full pack. The full guide is flash report.