A dedicated business bank account is one of the cheapest, highest-leverage steps in setting up an ecommerce business properly — and it's easy to postpone because nothing forces you to do it before your first sale.
Why it matters beyond "good practice"
- Protects your liability shield. If you've formed an LLC, mixing personal and business funds (commingling) is one of the most common ways a court can disregard the LLC's separateness in a dispute — undermining the very protection you formed the LLC to get.
- Makes bookkeeping dramatically simpler. Every business transaction lives in one place, which makes tax time, profitability tracking, and simply knowing how the business is actually doing far easier than untangling business activity from a personal account after the fact.
- Required for marketplace payouts in practice. Most marketplaces pay out to a bank account tied to your seller account, and increasingly expect that account to match your registered business name, especially once you're past initial small-scale testing.
What most banks require to open one
- Business formation documents — Articles of Organization (or equivalent) for an LLC, or nothing formal if opening as a sole proprietor under a DBA in jurisdictions that allow it.
- EIN (or SSN if operating as a sole proprietor without one) — see Do You Need an EIN.
- A DBA filing, if operating under a name different from your own legal name or your LLC's registered name.
- Personal identification for the account signer(s).
- An initial deposit, amount varies by bank.
Choosing where to open the account
Options include traditional banks, credit unions, and online-only business banking services built specifically for small/ecommerce businesses (some of which integrate directly with marketplace and accounting tools). Compare on: monthly fees and minimum balance requirements, transaction limits, integration with your bookkeeping software (see Bookkeeping Basics), and how quickly funds are available after a marketplace payout deposits.
A simple pre-opening checklist
- Confirm your business structure and have formation documents ready (if applicable).
- Get your EIN (or confirm you're using your SSN as a sole proprietor).
- Decide which bank/provider fits your needs (fees, integrations, physical branch access if that matters to you).
- Gather personal ID and any DBA filing.
- Fund the account with the required minimum initial deposit.
- Update your marketplace seller account(s) with the new account's routing and account number for payouts.
What to do immediately after opening
Route all business income and expenses through this account exclusively from day one — including reimbursing yourself properly (a documented transfer, not an ad hoc withdrawal) rather than paying personal expenses directly from the business account. This discipline is what actually preserves the liability-protection and bookkeeping benefits described above; opening the account is only the first half of the job.
Common mistakes
- Delaying opening the account until "the business is more real," then having months of transactions to untangle from a personal account.
- Occasionally paying a personal expense directly from the business account "just this once," which erodes the clean separation over time.
- Choosing a bank purely on brand recognition without checking transaction limits or fees relevant to marketplace payout volume.