State Apportionment user guide

ONESOURCE State Apportionment is a web-based apportionment management system that centralizes the collection, sourcing, and management of state apportionment data, tax rules, and positions. It also calculates division and partnership rollups. With State Apportionment, you can collect, consolidate, source, compute, and report apportionment data for use in tax returns and other systems.
Learn more with this user guide.