Banks differentiate their services for personal accounts from business accounts by setting lower minimum balance requirements, lower fees, free checks, free ATM usage, free debit card (Check card) usage, etc. The term does not apply to any one service or limit the banks from providing the same services to non-individuals.
At the turn of the 21st century, many banks started offering free checking, a checking account with no minimum balance, a free check book, and no hidden fees. This encouraged those Americans who would otherwise live from check to check, to open their "personal" account at financial institutions. For businesses that issue corporate checks to employees, this enables reduction in the amount of paperwork.