Is the bank liable if they deposit a business check into a personal account?

Yes, a bank can be liable if it deposits a business check into a personal account without proper authorization. This action typically violates banking regulations and the terms of the account agreements. The bank has a responsibility to ensure that checks are deposited correctly, and failing to do so can lead to legal repercussions and financial losses for the business. However, the specific circumstances and local laws will also play a significant role in determining liability.