Bookkeeping in a Law Firm Is Not the Same as in Any Other Business Most businesses track revenue, expenses, and profit. Law firms do all of that, and then layer on trust accounting requirements, IOLTA compliance, complex billing structures, and the very real professional risk that comes from mishandling client funds. A bookkeeping error in most businesses is a financial inconvenience. In a law firm, it can trigger a bar complaint. This context changes what 'good bookkeeping'