Fiscal period
An accounting period in Business Central or Dynamics 365 Finance — month, quarter, year — with control over what can post, close, and lock.
A fiscal period is an accounting period defined in Business Central's Accounting Periods or Dynamics 365 Finance's Fiscal calendars — typically a calendar month, with quarters and years aggregating. Each period has a start date, end date, and a status that governs posting behaviour: Open (transactions can post), On Hold (only privileged users can post), Closed (no further posting). Period close is the controlled sequence that moves a period from Open to Closed after all accruals, revaluations, reconciliations, and adjustments are complete. Multiple fiscal calendars can coexist (statutory, group, tax) with parallel periods. The fiscal year is typically the regulatory accounting year (matching tax / statutory reporting); some companies use non-calendar years (e.g. April – March, July – June).