How to separate personal and business finances

If there's one piece of bookkeeping advice worth doing today instead of someday, this is it. Mixing personal and business money makes everything else — taxes, decisions, liability, eventually selling — harder than it needs to be.

Why it actually matters

• Liability. If you have an LLC or corporation, mixing funds (called "piercing the corporate veil") can let creditors come after your personal assets in a lawsuit. The legal protection only holds if you treat the business as separate in practice, not just on paper.
• Taxes. Every personal swipe on the business card is a transaction your bookkeeper has to chase down and reclassify. Multiply by hundreds and tax prep becomes either expensive or wrong.
• Clean reports. A P&L littered with groceries and gas isn't telling you anything useful about the business.
• Future-you. Selling, raising, applying for a loan, or bringing on a partner all require books that don't include your Netflix subscription.

The basic setup

You don't need anything fancy. You do need a few accounts with one job each:

• A business checking account, separate from personal.
• A business credit or debit card used only for business expenses.
• If you have an LLC or corporation, accounts opened under the business EIN — not your SSN.
• A consistent way of paying yourself: owner draws (sole prop / single-member LLC) or payroll (S-corp).
• A consistent way of putting money in: owner contributions, tracked on the books.

Owner draws and contributions, briefly

Money moving from the business to you isn't an expense — it's an owner draw, which lives on the Balance Sheet. Money moving from you to the business isn't revenue — it's an owner contribution, also on the Balance Sheet. Coding either one as an expense or as income silently distorts everything. This is the most common bookkeeping mistake for solo founders, and it's the easiest to fix once you know the pattern.

If you've already mixed things

You're not the first. The fix isn't dramatic: open the separate accounts now, start running everything through them going forward, and have your bookkeeper untangle the historical mix as part of a cleanup. Every month from now on is one fewer month to untangle later.

If you'd like help getting set up cleanly from the start — or untangling what's already there — let's talk.