Running a Law Office means managing your cash flow.
The reality is you have to front capital for disbursements and overhead before invoicing your clients. Some firms may get paid right away, but usually you may have to wait for your money.
Cash flow exposure can be assessed by your WIP (work in progress), A/R (accounts receivable) and disbursements still unbilled. This is simply work you have done and not been paid for yet, plus any amount of money you have advanced