Why this matters
Mixing business and personal money is the fastest way to lose track of whether you are actually profitable, and if you formed an LLC, commingling funds can undermine the liability protection you formed it for. Come tax season, untangling a year of mixed transactions costs real accountant hours. One separate account from day one costs almost nothing and prevents all of it.
What "done" looks like
- A checking account in the business's legal name is open
- Every business dollar in and out flows through it
- A business debit or credit card exists for expenses
- Your personal account no longer touches business transactions
How to do it
- Gather your paperwork, formation documents, tax ID, and personal ID are what banks ask for.
- Compare two or three options, local banks and credit unions win on cash deposits and relationships; online business banks win on zero fees and fast setup.
- Read the fee schedule, avoid monthly fees you cannot waive and transaction limits below your expected volume.
- Open the account and reroute everything, payment processors, subscriptions, and suppliers all switch over the same week.
- Pay yourself by transfer, one clean owner's draw or salary per period, not ad-hoc spending from the business card.
Common mistakes
- "I'll separate accounts once revenue starts", retroactive bookkeeping costs far more than the account ever will
- Buying personal things on the business card because it happened to be in your wallet
- Choosing an online-only bank when your business handles physical cash daily
Real-world examples
- Mixing personal and business money, "commingling", is one of the documented ways courts "pierce the corporate veil" and hold the owners of an LLC or corporation personally liable for business debts. A separate business account is the first, cheapest line of that legal protection.
- Beyond liability, a dedicated account is what your bookkeeping, tax prep, and most lenders and payment processors quietly assume you already have; opening it right after you register the business keeps every later step clean.
- The practical rule most advisors give is strict and simple: no personal expenses paid from the business account, and no business revenue deposited into a personal one, including money you set aside for taxes.
From a founder's point of view
This is one of those unglamorous early tasks that quietly prevents a mess later. When business and personal money share one account, every tax season and every "how are we actually doing?" question becomes an archaeology project. Separating them from day one costs an afternoon and buys you clean books, real liability protection, and the ability to see your business as its own thing.
Rule of thumb
If you can compute this month's profit by reading one account's statement, you are done.