You don't legally have to have one, but you should get one anyway
A sole proprietorship is not a separate legal entity from you as a person. The IRS treats your business income as your personal income. That means you could technically run your business through your personal checking account, and the government would not stop you.
But doing so creates real problems. The IRS expects you to keep business and personal money separate on your tax return, even if they flow through the same account. Your accountant will spend more time untangling transactions. You lose the paper trail that protects you if someone sues. And you make it harder to prove to a bank or lender that your business is actually profitable, because your personal spending is mixed in with your business spending.
A business checking account costs money—usually $10 to $30 per month—but it solves all of these problems at once. It is the cheapest insurance you can buy against a messy tax season and a clearer picture of what your business actually makes.
Key Takeaways
- The IRS does not require a sole proprietor to have a separate business checking account, but the agency expects you to track business and personal money separately on your tax return.
- A business checking account creates a clear record of income and expenses, which makes tax filing faster and gives you proof of what your business earned.
- If you are sued, a business account shows that you kept business money separate from personal money, which can protect your personal assets in some situations.
- Most business checking accounts cost $10 to $30 per month and come with features like unlimited transactions and merchant services that personal accounts do not offer.
- You will need an Employer Identification Number (EIN) from the IRS to open a business account, even if you have no employees.
What the IRS actually requires you to track
The IRS does not care which account holds your money. It cares that you can prove what you earned and what you spent. On your Schedule C tax form (the form sole proprietors file), you list all business income and all business expenses. The IRS wants to see that those numbers match your bank records.
If your business money and personal money are in the same account, you have to go through every transaction and mark which ones are business and which are personal. A $200 withdrawal could be a business supply purchase or a personal grocery trip—you have to remember or guess. A business checking account removes that guesswork. Every transaction in that account is business by definition.
The IRS will not audit you for using a personal account. But if you are audited, a mixed account makes the audit longer and more expensive, because your accountant has to spend hours sorting transactions that a business account would have sorted automatically.
How a business account protects your personal assets
A sole proprietorship does not shield your personal assets the way an LLC or corporation does. If someone sues your business and wins, they can go after your house, your car, and your savings. That is the trade-off of being a sole proprietor—simpler taxes, less protection.
A business checking account does not change that legal reality. But it does create evidence that you treated your business as separate from your personal life. If you ever convert to an LLC or corporation later, or if you end up in court, that separation matters. A judge or lender will see that you kept business money in a business account and personal money in a personal account, which shows you took your business seriously.
This is not a may provide of protection. It is a piece of evidence that works in your favor. The more you can show that you ran your business like a real business—separate account, separate records, separate tax filing—the harder it is for someone to argue that you were just using it as a personal piggy bank.
What you need to open a business checking account
Most banks will ask for an Employer Identification Number (EIN) before they open a business account. An EIN is a nine-digit number the IRS assigns to businesses. You can get one for free from the IRS website in about 15 minutes, even if you have no employees. You will need your Social Security number and the date you started your business.
You will also need to bring a government-issued ID, proof of your business address (a utility bill or lease works), and your Social Security number. Some banks ask for a business license, but most do not require one for a sole proprietorship—it depends on your state and your industry.
A few banks will let you open a business account with just your Social Security number instead of an EIN, but most have moved away from that. Getting an EIN takes 15 minutes and costs nothing, so do it first. It also signals to the IRS that you are running a real business, which is useful if you are ever audited.
How much a business checking account costs
Monthly fees range from $0 to $30, depending on the bank and the account type. Some banks charge nothing if you keep a minimum balance—often $500 to $2,500. Others charge a flat monthly fee regardless of your balance. A few charge per transaction after a certain number of free transactions per month.
Most business accounts come with features that personal accounts do not: unlimited check writing, merchant services (the ability to accept credit cards), invoice tools, and accounting software integration. If you are just starting out and do not need those features yet, a low-cost account at an online bank might be enough. As your business grows, you may want to move to a bank that offers more tools.
The cost is small compared to the time you save at tax time. One hour of accountant time costs $150 to $300. A business account at $20 per month pays for itself in one hour of sorting transactions.
When you might not need a business account yet
If your business is very new and you have not earned much money yet, you might wait a few months before opening a business account. But the moment you start taking money from customers or clients, open one. Do not wait until tax season.
If you are running a side business and your income is under $400 per year, you do not have to file a Schedule C at all—the IRS does not require it. But if you are earning more than that, you need to track it, and a business account makes that tracking automatic.
The only real reason to delay is if you cannot afford the monthly fee. In that case, use your personal account but keep meticulous records of which transactions are business. Write down the date, amount, and purpose of every business transaction. Your accountant can still file your taxes, but it will take longer and cost more.
How to set up your account to work with your taxes
When you open your business checking account, ask the bank whether they offer integration with accounting software like QuickBooks or Wave. Many do, and it means transactions read automatically into your accounting system instead of you entering them by hand.
Set up a separate savings account for taxes if you can. As you earn money, move a percentage into that savings account—usually 25 to 30 percent of your profit, depending on your tax bracket. That way, when taxes are due, the money is already set aside and you are not scrambling.
Keep your business account for business only. Do not use it for personal expenses, and do not use your personal account for business expenses. The cleaner the separation, the easier your life becomes at tax time.
Frequently Asked Questions
Can I use my personal checking account and still file taxes correctly?
Yes, but you will have to manually sort every transaction and prove to the IRS which ones are business and which are personal. A business account does this automatically. If you are audited, a mixed account makes the audit take longer and cost more in accountant fees.
Do I need an EIN if I am a sole proprietor with no employees?
No, the IRS does not require it. You can use your Social Security number on your tax return instead. But most banks require an EIN to open a business account, and getting one is free and takes 15 minutes. It also makes it clearer to the IRS that you are running a real business.
What happens if I mix business and personal money in one account?
Nothing illegal happens, but you create extra work for yourself and your accountant. You lose the automatic record of what your business earned. You also lose the evidence that you kept your business separate from your personal life, which matters if you are ever sued or if you convert to an LLC later.
Can I open a business checking account online, or do I have to go to a bank branch?
Most online banks let you open a business account entirely online. You upload your ID, EIN, and proof of address, and the account opens in a few days. Some traditional banks require you to visit a branch in person. Online accounts usually have lower fees but fewer in-person services.
What if my business name is just my own name?
You can still open a business checking account. Tell the bank your business name (which can be your personal name) and your EIN. The account will be registered as a business account even though the name is the same as your personal name.