Opening a separate business bank account is the first and most important step. If your business income and expenses run through your personal checking account, every transaction requires you to think about whether it’s business or personal. A dedicated business account removes that friction. Business money goes in one account. Personal money stays in another.

Get a business credit card while you’re at it. Use it exclusively for business purchases. This gives you a clean record of business expenses without having to sort through mixed statements. Most banks offer business cards with decent rewards, and the annual fee is a deductible business expense.

The tricky part isn’t setting up separate accounts. It’s keeping them separate. That means resisting the urge to use your business card for a quick personal purchase because it’s the one in your hand. It means not pulling money from the business every time you need cash. Small exceptions add up and you end up with mixed transactions again.

Pay yourself consistently. For sole proprietors, this means regular owner’s draws into your personal account. For S-corps, it means payroll. Either way, transfer a set amount on a schedule instead of reaching into the business whenever you need personal funds. This creates a clear trail and makes monthly bookkeeping much simpler.

When mixing happens (and it will), record it correctly. If you accidentally use your personal card for office supplies, note it as an owner contribution. If you use the business card for groceries, record it as an owner draw. These entries keep your books accurate without pretending the mix-up didn’t happen.

Set ground rules for yourself. Some owners carry only their business card during work hours. Others put a sticky note on their personal card as a reminder. Whatever works for you. The goal is building a habit where separation becomes automatic.

Why does this matter beyond keeping clean records? Banks and lenders want to see business finances that stand on their own when you apply for credit. The IRS expects clear documentation of business expenses. If you’re structured as an LLC or corporation, mixing personal and business funds can weaken the liability protection you’re paying for. Most small business bookkeepers can help you set up a system that works from the start and stays organized with minimal effort on your end.