To keep your personal and business finances separate, you need to obtain an EIN, open a business bank account, use that account for all business expenses, and pay yourself through a payroll system. If you skip any of these steps, you could get in trouble if someone sues you or you get a notice from the IRS.
Someone starts a business, gets excited, and starts using their credit card for business expenses. Six months later, they are trying to sort out a year's worth of transactions from their checking account, which also paid their mortgage and bought groceries. It is a mess. It can be avoided.
This guide will show you how to keep your business finances separate from the start, how much it costs, what forms you need, and where business owners usually go wrong.
Why Mixing Your Finances is a Bad Idea
An LLC is supposed to protect your assets from your business's debts. This only works if you treat the LLC as a separate business. If you get sued and a judge finds out that your business bank account is really your personal account, you could lose your house and savings.
We have had clients who learned this the hard way. They had a problem with a vendor. It turned into a lawsuit. Their lawyer asked for six months of bank statements, which showed rent payments, Amazon purchases, and client invoices all mixed together.
Mixing your accounts also makes tax season very difficult. Your bookkeeper has to sort through hundreds of transactions, which costs you money or takes up a lot of your time.
Step 1: Get Your EIN Before You Open a Bank Account
You cannot open a business bank account without an EIN. This is the real first step in keeping your finances separate.
If you have a US Social Security Number or ITIN, you can apply online at IRS.gov. Get your EIN in about 15 minutes for free. If you are not a US resident, you must complete Form SS-4 and fax or mail it to the IRS.
As of August 2026, the IRS is processing faxed SS-4 applications in 4 business days. Mail applications take 4 weeks. There is also a phone number for applicants, through which the IRS can sometimes give you an EIN right away.
One common mistake we see is business owners filling out the form incorrectly or forgetting to sign it. This means the IRS will send it back and you have to start over.
How to Keep Your Finances Separate With the Right Bank Setup
Once you have your EIN, you need to open a business bank account that your business uses exclusively. This is the step that actually keeps your business finances separate.
For business owners who are not US residents, not all banks will work. Here is what we know as of August 2026:
| Platform | Do you need an SSN or ITIN? | Notes |
|---|---|---|
| Mercury | No, but you often need a US address | Works well with Stripe. Has strong approval standards |
| Relay | Usually yes | Has features for sub-accounts once you are approved |
| Wise Business | No | Not a bank. Gives you a real US routing number |
| Traditional banks like Chase or Bank of America | Usually yes, and you often have to visit in person | Not usually practical for business owners who work remotely |
You will typically need your Articles of Organization, your EIN confirmation, and a passport. The bank will usually not accept screenshots or a self-completed SS-4 as proof of your EIN.
For a non-resident business owner, it can take 2 to 8 weeks to get a funded business bank account from the time you form your LLC. The wait for your EIN is usually the longest part.
Step 2: Get a Business Credit Card
A business debit or credit card tied to your EIN, not a card you use for work, helps keep your finances separate. If you use a card for business expenses and reimburse yourself later, you create a paper trail that is hard to defend and annoying to sort out.
Most banks will give you a debit card right away, and some offer virtual cards you can use for specific vendors or projects. This makes it easier to track your subscriptions and ad spend.
Step 3: Pay Yourself the Right Way
This is where many single-member LLC owners make a mistake. If you are a single-member LLC, you pay yourself by transferring funds from your business account to your personal account, and you record it as an owner's draw rather than a business expense.
You should not pay your rent, car payment, or personal Amazon orders directly from your business account. You need to do these things after you have moved the money to your personal account.
If your LLC is taxed as an S-Corp, you have to run payroll for yourself, which is a different setup.
Mistakes That Put Your LLC at Risk
- Using your LLC's EIN to open an account. Banks will flag this. It defeats the purpose.
- Paying a spouse's or partner's personal expenses from the business account. Even if it is only once, a court can cite it as evidence that you are not keeping your finances separate.
- Not keeping your formation documents and operating agreement on file. Banks and courts want to see that your LLC is a business, and an operating agreement is part of that.
- Letting a bookkeeper sort it out later. The IRS and auditors care about records kept at the time, not those recreated later.
State-Specific Rules You Should Know
Some states have rules you should know about:
- California charges an $800 annual franchise tax, which should be paid from your business account.
- New York requires LLCs to publish a notice in approved newspapers within 120 days of formation, which can cost a few hundred to over a thousand dollars.
- Delaware LLCs owe a $300 annual franchise tax, which simplifies bookkeeping but does not eliminate the need for a separate account.
A Realistic Timeline If You Are Starting From Scratch
- Week 1: File your Articles of Organization. Confirm that your LLC is formed.
- Week 1-2: Apply for your EIN. If you are eligible, you can get it online right away. If you fax it, it takes 4 business days. If you mail it, it takes 4 weeks.
- Week 2-4: Apply for a business bank account once you have your EIN.
- Week 3-5: Get a business debit or credit card, set up a bookkeeping tool, and route all transactions through your business account.
If you already have an LLC and have been mixing your finances, do not try to fix a year's worth of history by memory. Pull your statements, sort out what you can, and start keeping your finances separate from now on. It is better to fix it than not to fix it at all. It is the strongest argument you will have if someone questions your finances.
FAQs
Do I need a business bank account if I am a single-member LLC? Technically, some states do not require it, but practically, yes. It is the proof that your LLC is a separate business, which matters for liability protection and taxes.
Can I use my EIN for a business account? You do not have an EIN personally. The EIN is for your business. It is what the bank uses to open your business account.
How long does it take to open a business account as a non-US resident? It can take 2 to 8 weeks, with the EIN application taking the longest.
What happens if I have already been mixing my business funds? Stop mixing your money now. Open an account if you haven't already, and go back through your recent bank statements to sort out what you can. This will not undo what has already happened, but it will prevent the same thing from happening again, and it shows you are trying to fix the problem if someone asks about it.
Get It Right From the Start
If you are starting a US Limited Liability Company and you want to get an Employer Identification Number, a registered agent, and a calendar to keep track of dates handled properly from the beginning, EasyFiling can help you set everything up so your business money is separate from your personal money, from the very start, instead of waiting until later.
