by Gregory J. Cook, EA, CPA
Accredited Tax Advisor
If you deposit all of your income into this account and pay all of your expenses from this account, this will serve as a foundation for your books. You should keep your business account separate from your personal checking account.
Do not comingle personal and business by paying personal expenses directly from the business account. Comingling can defeat an LLC or corporate veil. If you have a federal or state audit, you may have to provide these banking records.
Consider using a checkbook that allows enough space to identify the source of deposits as business income, personal funds, or loans.
If you must write a check for cash to pay a business expense, include the receipt for the cash payment in your records. If you cannot get a receipt for a cash payment, you should make an adequate explanation in your records at the time of payment.