Keep It Separate
It takes an afternoon, it costs nothing, and skipping it is the single most expensive administrative decision a new business owner makes.
You did some work. Someone paid you. It went into your ordinary current account, alongside the groceries and the school fees, and it felt like a good day.
That is how almost every woman-owned business starts, and it is the one early habit worth breaking immediately.
What mixing them actually costs
Your time, in February. Reconstructing a year of business expenses out of a personal account is genuinely miserable work. Every line has to be judged. Most people give up partway and simply do not claim things they were entitled to claim, which is a real cash cost on top of the hours.
Deductions you will not take. Not because you were not allowed them — because you could not prove or find them.
Your liability protection, if you have any. This is the one people do not see coming. If you form an LLC precisely to separate business risk from personal assets, and then run everything through one account, you have undermined the thing you paid for. Courts look at whether the separation was real.
Credibility. An accountant, a lender, a landlord, or eventually a buyer all want to see a business that has its own financial life.
And in a divorce or an audit, clarity. If either of those is even distantly possible, a clean line between business and household money is worth a very great deal.
The afternoon version
One business bank account. A plain business current account. It does not have to be at your own bank, and it does not need to be sophisticated.
One card used only for business. Even a second personal card kept strictly for business is better than mixing, though a genuine business card is better still.
An EIN. An Employer Identification Number is free, direct from the IRS, and takes minutes. You do not need employees to have one.
Two reasons it matters more than it sounds. Many banks want one to open a business account. And it means you can put an EIN rather than your Social Security number on every W-9 you hand to a client — which, when you are sending your details to strangers who will store them badly, is a meaningful privacy improvement.
One rule, from day one. Business income in, business expenses out, and nothing else through that account.
Paying yourself
This is where people get confused, so here is the simple version.
You do not "not pay yourself". You move money from the business account to your personal account, deliberately, on some rhythm — weekly, monthly, whatever fits. That transfer is your pay.
What you are avoiding is buying the weekly shop from the business account because that is the card in your hand.
The transfer leaves a clean record. The grocery shop leaves a question for February.
The percentage that goes nowhere
One more account, or at least one more envelope inside the business account: tax.
Nobody is withholding anything for you now. A common starting point is setting aside somewhere in the region of a quarter to a third of what you net, but the right figure depends on your situation and belongs with a CPA.
The important part is the habit: money that arrives is not all yours, and the portion that is not yours should stop being visible immediately. It is very hard to give back money you have already counted.
If you have been mixing for a while
Nothing here requires starting over.
Open the account now. Move the business activity across as of a clean date — the first of a month is fine. Do not attempt to retroactively untangle three years; tell your accountant when the line begins and work forward from it.
Starting the separation today is worth far more than a perfect reconstruction of last year.
What this article deliberately does not do
It does not tell you what to claim, what your tax will be, or what structure to trade under. Those are a CPA's answers and they depend on facts no article can see.
What it does is make sure that when you sit down with one, the picture in front of you is legible.