Chiming in. The accounts and the transactions used will depend on the type of transactions you're talking about. If you're doing actual buying and selling between the subsidiaries then yes, use interco sales orders/purchase orders. Therefore, you'll set up interco AR and interco AP accounts. But if you're just moving cash, using interco SO/PO's are overkill. Use the advanced interco journal transaction instead. And then create either an other current asset account or an other current liability account that will hold the due to/due from. But use an interco AR and interco AP account (while still using adv interco journals) if you must have things show up on an AR/AP aging report.