Running the business through your personal account: what it costs you later

You can, but the bill comes due later

Many sole owners do start by running business money through a personal account, and for a very small side business it may be workable for a while. But the IRS's own guide for new businesses says one of the first things you should do is open a business checking account and keep it separate from your personal one. Mixing the two makes your tax records harder to defend, makes it much harder to qualify for business credit, and for an LLC or corporation can undercut the separation between you and the company that the entity was formed to create.

My work at Frost Bank covers business deposits and lending for small and mid-size companies, and some of the hardest credit conversations I have are with owners whose business is healthy but whose money is tangled up with their household. The business may be doing well; the problem is that nobody, including the owner, can prove it from the bank records.

Why owners start this way

It usually begins innocently. The first customer pays before the business has a name, let alone an account. A freelancer gets a few checks and deposits them at the same branch as the paycheck. A husband and wife start a side business and use the joint account because it is already there. Opening a business account feels like a formality for later, and later keeps getting pushed back.

By the time the business is real, years of transactions are mixed together. Personal groceries and business supplies come out of the same card. Customer payments land next to a tax refund and a birthday check. Untangling it becomes a project, so it keeps waiting, and the cost of waiting grows.

The tax problem: proving what is business and what is not

The IRS expects you to be able to back up the income and deductions on your return, and its recordkeeping guidance says you may use any system that clearly shows your income and expenses. A dedicated business account is the simplest way to do that. When everything flows through one personal account, your accountant has to sort every line, deciding which deposits are business income and which payments are deductible, and you have to be able to support those decisions if asked.

That sorting takes time, and time costs money at tax season. It also creates risk in both directions: personal deposits counted as business income, or legitimate business expenses missed because they were buried among personal ones. If your records are already months behind, a bookkeeper can help catch up; how a small business catches up on months of books describes what that process looks like.

The lending problem: a bank cannot see your business

When a business applies for a line of credit or an equipment loan, the bank looks at how much cash the business generates and how reliably. Business bank statements are one of the clearest pieces of evidence. If the business has no account of its own, there is nothing clean to review, and the bank has to rely on tax returns and the owner's explanations. That usually slows the process and can limit what the bank is able to offer.

Mixed accounts also blur the picture in a different way. A deposit pattern that includes a spouse's paycheck, transfers from savings and customer payments tells an underwriter very little about the business. A separate account with a year or two of steady business deposits tells a clear story. If credit is anywhere in your plans, my earlier guide on when a line of credit beats a loan explains what banks look for.

There is a timing point here too. Banks generally want to see a history, not a new account opened the week before an application. If you think you might want a line of credit or an equipment loan in the next year or two, separating your accounts now is one of the most useful things you can do to prepare, because it gives the business its own track record by the time you ask.

The liability problem for LLCs and corporations

If you formed an LLC or corporation, you did it at least partly to keep the business's obligations separate from your personal assets. Running the company's money through your personal account works against that. Courts can look at whether owners treated the company as truly separate, and commingled funds are one of the things that can come up. I am not an attorney, and how this applies to your situation is a question for one; a business attorney such as Steven Besly can explain how Texas courts look at it and what records help.

From the banking side, the practical point is simple: if the company is a separate legal entity, its money should be in an account in the company's name, opened with the company's tax identification number. That is also what most banks will require before they will lend to it.

Deposit insurance works differently for a sole proprietor

One detail surprises owners. According to the FDIC, accounts held in the name of a sole proprietorship are not insured as a separate business category. They are insured as the owner's own single-account deposits and added to the owner's other single accounts at the same bank. Accounts owned by a corporation, partnership or unincorporated association, by contrast, are insured separately from the owners' personal deposits, provided the entity exists for a real business purpose.

For most small businesses this will not matter, because balances are well under the insurance limit. But if a sole proprietor keeps substantial personal savings and business cash at the same bank, it is worth understanding how the coverage adds up. The FDIC's standard coverage is at least 250,000 dollars per depositor, per ownership category, at each insured bank.

Separating the money without a big disruption

You do not need to fix years of history overnight. The goal is to draw a clean line from a specific date forward, then let your accountant handle what came before. Here is the order I suggest to owners who are ready to separate.

Keep the personal account open while the change settles in. Some customers will keep paying the old way for a month or two, and some automatic payments will take a cycle to move. When a business payment lands in the personal account after the start date, transfer it to the business account promptly and note it, so the trail stays easy to follow. After two or three months, the old habits are usually gone and the new account carries all of the business activity.

• Get an employer identification number if your business needs one; the IRS issues them free online
• Open a business checking account in the business's legal name, with its tax ID
• Pick a start date and route all customer payments to the new account from that day
• Move recurring business expenses and subscriptions to the business account or a business card
• Pay yourself by transfer from the business account to your personal one, not by spending business money directly
• Tell your accountant the start date so the books can be split cleanly

What to bring to the bank

What a bank asks for depends on how the business is organized. A sole proprietor operating under a name other than their own will usually need an assumed name certificate in addition to personal identification. An LLC or corporation will need its formation documents and tax ID, and the bank will ask about the people who own and control it. I cover the Texas specifics in my guide on opening a business bank account in Texas.

Do not be surprised if the bank asks questions about what the business does, how customers pay and how much activity to expect. Those questions are a normal part of opening any business account, and clear answers help the bank set up the right account type from the start.

Habits that keep the line clean once it is drawn

Separating accounts helps only if the separation holds. The most common slip is paying a personal expense from the business account because it was convenient, or the reverse, covering a business bill from personal funds in a tight week. When it happens, record it as what it is, an owner draw or an owner contribution, so your accountant can follow it.

Set up a regular pay-yourself schedule, even a simple one, so you are not reaching into the business account at random. Keep the business debit card in a different place from your personal one. And review the business statement monthly, which takes a few minutes when only business transactions are on it. Owners in Dallas who make these small habits routine find tax season, loan applications and conversations with their accountant noticeably easier.

Where to go from here

If you are still running the business through a personal account, the best time to separate is before you need a loan, before an accountant has to untangle another year and before anyone questions where the company ends and you begin. Opening a business account is a modest task; the habits around it are what make it work.

If you would like help choosing the right account and setting it up so customer payments, vendor payments and your own pay all flow cleanly, I am glad to talk with owners anywhere in Dallas–Fort Worth. Treat what you read here as general information; your accountant and, for entity questions, your attorney should guide the decisions specific to your business.

Questions people ask me