How Business Central's ledger, accounting periods, additional reporting currency, year-end close, intercompany and consolidation translate into D365 — identifying the genuine design decisions amid a landscape that is largely a reconfiguration exercise.
Chapter 1 established the chart-of-accounts and dimension-model translation. This chapter covers the remaining finance infrastructure: the ledger record itself, accounting periods and fiscal calendars, currencies and exchange rates, posting layers, the year-end close, intercompany accounting, consolidation and the reporting stack.
Business Central's General Ledger Setup defines the local currency code (LCY), rounding precision, application rules and various posting controls. Each company has one LCY — the accounting currency. An optional Additional Reporting Currency (ARC) maintains a second currency amount on every G/L Entry.
Business Central's Accounting Period table defines period boundaries and fiscal-year starts per company. Periods are created manually or generated, and each period carries a closed flag that prevents posting to prior periods.
Business Central has no posting-layer concept. Every G/L Entry posts without layer differentiation. D365 provides ten posting layers:
BC's year-end close uses the Close Income Statement batch job, which creates closing entries that transfer P&L account balances to a retained-earnings account. Options include posting to a specific journal, including dimensions on closing entries, and selecting which income-statement accounts to close.
BC's intercompany feature uses IC Partners linked to other companies, with an IC Chart of Accounts that maps each company's chart to a common intercompany chart. IC transactions flow through IC General Journal, IC Sales/Purchase documents, and auto-send/receive mechanisms.
BC consolidation pulls financial data from Business Units (other companies in the same database or imported from external files) into a consolidation company. Translation methods handle currency conversion; elimination journals remove intercompany balances.
BC provides financial reports (formerly Account Schedules) and Analysis Views for management reporting. Both combine account ranges, dimension filters and calculated rows/columns.
Business Central's ledger infrastructure translates into D365 with relatively few structural changes. Currencies map, periods map, journals map, consolidation maps. The genuine design decisions are narrow: confirm the two-currency model satisfies the reporting requirement, understand that posting layers are net new capability (BC has…