Its important to separate your checking and savings accounts.
Two reasons. First, you should be putting your emergency fund into a separate savings or money market account. This is important because you need a safe place to stash your reserves where it won’t get raided to pay for daily expenses.
Second, if you are doing anything entrepreneurial, you’ll need to account for the income and expenses of your business endeavors. Having separate checking and savings accounts is an important facilitator of this processes. The worst thing that can happen when you are trying to make money and build wealth through a side business (or full time business) is not having everything in order if you were to be audited.