One subsidiary invoices another for shared services, and the entry sits unmatched in both companies for three weeks before anyone notices — not because the transaction was wrong, but because nothing in the setup was actually designed to keep two separate companies' books synchronized on the same transaction in real time. Consolidation reporting, covered in more depth elsewhere on this site, solves the reporting-level problem. It doesn't solve this one.
Two Different Problems, Often Confused
Consolidation combines multiple companies' financials into one reported view at period-end. Intercompany transaction processing is a different, day-to-day problem: making sure a transaction recorded in one company automatically creates the corresponding, correctly matched transaction in the related company, without someone manually re-keying it twice and hoping both sides agree.
A company can have excellent consolidation reporting and still have a genuinely broken intercompany transaction process underneath it — the two are related but solve different problems.
What Proper Setup Actually Requires
Intercompany Partner Setup
Each related company needs to be set up as a recognized intercompany partner, with a defined chart of accounts mapping between them — since two companies rarely share an identical G/L structure, this mapping determines where a transaction posted in one company lands in the other.
Automatic Transaction Creation, Not Manual Re-Entry
Done properly, a transaction entered in Company A specifying Company B as the intercompany partner automatically generates the corresponding transaction in Company B, correctly mapped through the chart of accounts translation. Companies that skip this setup end up manually creating matching entries in both companies — a process that's slow and creates exactly the kind of unmatched, drifting entries described above.
Dimension Consistency Across Companies
If intercompany transactions need to be reported by department, project, or region, the Dimensions used need to be set up consistently across every company involved — the same problem covered in more depth in our multi-entity consolidation setup guide, but relevant here at the transaction level too, not just at reporting time.
Where This Typically Breaks
The most common gap is treating intercompany as purely a consolidation-time concern and never configuring the transaction-level automation at all — meaning every intercompany transaction throughout the year gets manually duplicated, with all the reconciliation risk that implies, and consolidation at period-end becomes an exercise in untangling a year's worth of manually matched entries rather than simply combining data that was already correctly linked from the start.
Where to Start
If your company has related entities and intercompany transactions currently get manually entered twice, once in each company, that's the specific gap worth closing first — before period-end consolidation, not as a consequence of struggling with it.