Can you use gta online money in story mode?

Grand Theft Auto Online, the multiplayer component of Grand Theft Auto V, has its own separate economy. Players earn in-game currency while completing missions, heists, or other activities in the online world. The available evidence from a Wikipedia entry on GTA Online does not mention any mechanism or official support for transferring this money into the single‑player story mode of GTA V. As such, based on the current verified information, you cannot use GTA Online money within the story mode.