Can I use my personal bank account for my business?

Separate business and personal finances: what the IRS says

The IRS advice is short and plain: open a business checking account and keep it separate from your personal account. The same publication asks owners to deposit all daily receipts in the business account and mark each deposit's source as business income, personal funds or a loan, and to pay themselves only as a recorded withdrawal for personal use. None of that is a legal requirement for a sole proprietor. It is the recordkeeping the IRS expects to see when it asks how a number on a return was reached.

Excite Tax's reason is practical. When one account holds only business activity, the bank statement is most of the bookkeeping: every deposit is income, a loan or an owner contribution, and every payment is an expense, an asset, a loan payment or an owner draw. When the account also pays the mortgage and the groceries, each line has to be judged by someone who remembers what it was, and that memory fades by tax season.

Who owns the money depends on the entity

The answer changes with the tax entity, because the entity decides whether the owner and the business are one taxpayer or two.

Can I deduct expenses paid from my personal account?

For a sole proprietor, the account a cost was paid from does not decide the deduction; the cost does. A business expense must be both ordinary and necessary to be deductible, and when a cost is partly personal, the personal part is separated out and is generally not deductible. What the personal account does change is the proof: the receipt has to show a business purchase, because the statement it appears on is a household one.

For an S-corp owner, paying a business cost personally and never being repaid loses the deduction. The owner is an employee of the corporation when providing more than minor services and receiving, or being entitled to, compensation, and an employee outside four listed categories cannot deduct unreimbursed employee business expenses. The corporation did not pay the cost, so it has nothing to deduct either. The fix is to repay the owner, properly.

How an accountable plan works

An accountable plan is a written reimbursement policy the corporation adopts and follows. Under the Treasury regulation that defines it, it must meet three requirements: a business connection, substantiation of each expense, and return of any excess. When it does, the reimbursement is not income to the owner, is not wages on Form W-2, and carries no withholding or employment tax.

• Business connection: the plan repays only business expenses the owner actually paid. An amount paid whether or not expenses are incurred fails this test, so a flat monthly allowance is not a reimbursement.
• Substantiation: each expense is documented to the corporation. Lumping costs into broad categories such as travel, or labels such as miscellaneous business expenses, does not count.
• Timing: the regulation's safe harbor treats an expense substantiated within 60 days after it is paid, and any excess returned within 120 days, as timely.
• Payment: a reimbursement paid alongside salary must be a separate payment or a specifically identified amount. Excite Tax prefers a separate transfer with the expense report attached.

If the arrangement fails any of the three, every payment under it is wages: on the Form W-2 and subject to withholding and employment taxes. Owner pay, distributions and basis are covered in S corporation shareholder basis.

Worked examples

• A Sandy sole proprietor puts a $1,200 annual design-software subscription on a personal Visa, and it is deductible on Schedule C if it is ordinary and necessary, exactly as if the business account had paid it. The books show $1,200 of software expense and a $1,200 owner contribution; if the business later sends the owner $1,200, that transfer is a draw, and a draw is not deductible, so the cost is counted once.
• The same owner's $600 phone bill, used 70% for the business, gives $420 of expense and $180 of personal cost, because the personal part of a mixed expense is generally not deductible.
• A Provo S-corp owner pays $1,380 on a personal card on March 3, the $1,200 subscription and $180 of shipping supplies, and sends the corporation an expense report with both receipts on April 20, inside the 60-day safe harbor. The corporation repays $1,380 by a separate transfer; that amount is not wages and carries no payroll tax, and the corporation books it as software and supplies.
• If that corporation instead pays its owner a flat $400 a month as a phone-and-car allowance with no receipts, the arrangement fails the business-connection test. The $4,800 a year is wages on the Form W-2, and the corporation owes its share of social security and Medicare, 6.2% and 1.45%, or $367.20 on top.
• If the $1,380 is never repaid, the corporation paid nothing and deducts nothing, and the owner, as an employee, cannot deduct it on the personal return. The deduction is simply lost.

Recording personal credit card payments in QuickBooks or any ledger

The entry is the same in any double-entry ledger, QuickBooks Online included. Record the expense on its own account (software, supplies, meals), with the receipt attached, and credit an account that belongs to the owner rather than a bank account. Which owner account depends on the entity:

1. Sole proprietor or partner: credit owner contributions (or the partner's capital account). Nothing is owed back; if the business later pays the owner, book that payment as a draw.
2. S corporation: credit a liability account such as due to shareholder. When the corporation repays the owner under the plan, debit that liability and credit the business bank account, so the balance returns to zero.
3. Keep the expense report with the entry. A reimbursement with no report behind it is the item most likely to be reclassified as wages or a distribution.

Excite Tax advises against adding a personal card or personal bank account to the business's bank feeds. Every grocery run would arrive as a transaction to exclude, and one missed exclusion becomes a deduction the business cannot support. A business card used only for business avoids the question; see the related guide on the profit and loss statement for where these costs land.

Mixing personal and business expenses: the cleanup

Mixed accounts are common, and the cleanup is mechanical: find every personal cost the business paid and every business cost paid personally, and book each one where it belongs.

1. Collect statements for every account the business touched in the year, personal accounts included.
2. Mark each transaction business, personal or mixed. For a mixed item, separate the business part from the personal part.
3. Book business costs paid personally as owner contributions (sole proprietor or partner) or as amounts owed to the owner (S corporation), with the receipt.
4. Book personal costs paid by the business as draws or distributions, never as expenses.
5. For an S corporation, repay the owner under a written accountable plan, and treat regular personal spending from the corporate account as a pay question, given the employment-tax case the IRS cites.
6. Stop the mixing: open the business account, move recurring charges to it, and reconcile it monthly; see bank reconciliation.

More than a few months of this is a catch-up job: see fixing messy books and common bookkeeping mistakes.

Business vs personal bookkeeping

Business books record the business: its income, its costs, what it owns and owes, and every movement of money between it and its owner. Household budgeting is a separate job with separate tools, and it does not belong in the business file. The line between them is the owner's equity or loan account: money crossing it is recorded once, as a contribution, a draw, a distribution or a loan, and the rest of the household's spending never appears in the business books at all.

The IRS asks the same thing in its own words: business books must show gross income, deductions and credits, and records of anything else only get in the way. What the IRS requires and for how long is covered in what records does the IRS require.

Business budgeting with separate bank accounts

One business account is what Excite Tax recommends at minimum; more than one is a budgeting choice. A common setup:

• Operating account: all deposits land here and all bills are paid from here.
• Tax reserve account: a set share of each deposit moves here for income-tax estimates, and any sales tax or payroll withholding collected sits here until it is paid over.
• Owner pay: draws, distributions or salary move to the owner's personal account on a schedule, not ad hoc from the operating account.

The reserve account works because it keeps money that is not the business's out of sight. Every account added is another statement to reconcile each month, and transfers between the business's own accounts are neither income nor expense; they must be booked as transfers, or the books double-count them.

Business brokerage account vs personal account

A business brokerage account is opened in the business's name and holds the business's investments; the gains, dividends and interest belong on the business's books. A personal brokerage account holds the owner's. Moving business cash into a personal brokerage account takes it out of the business, so it is a draw or distribution first and an investment second, and it should be booked that way.

For a single-member LLC, the investment income ends up on the owner's return either way, because a disregarded LLC is reported on its owner's return. The books should still show which account holds which money. For an S corporation or a partnership, an investment account in the entity's name is the entity's asset and its income is the entity's to report; an account in the owner's name is the owner's, whatever the money was earmarked for.

In Utah

Utah owners who collect sales tax hold money that was never the business's: sales tax collected and turned over to the state is neither income nor a deduction. Utah sales-tax returns are due the last day of the month after the filing period, so a quarterly filer carries up to four months of collected tax. In a personal account mixed with household money, that balance is easy to spend; in a business tax reserve account, it is waiting when the return is due.

Whether mixing accounts affects a Utah LLC's liability protection is a question of Utah law, and this page does not answer it; ask a Utah lawyer.

Questions that depend on the entity

When to hand this to a preparer

Hand the books over when keeping them costs more hours than the business can spare, or when they stop agreeing with the bank.

Excite Tax keeps these books; the return they feed is reviewed and signed by a licensed CPA at TBD CPA LLC.

Sources

1. IRS Publication 583 (12/2024), Starting a Business and Keeping Records · retrieved September 2026
2. 26 CFR § 1.62-2, Reimbursements and other expense allowance arrangements (eCFR, current as of 2026-09-01) · retrieved September 2026
3. IRS Publication 334 (2025), Tax Guide for Small Business · retrieved September 2026
4. IRS, Instructions for Form 2106 (2025), Employee Business Expenses · retrieved September 2026
5. IRS, Instructions for Schedule E (Form 1040) (2025), Supplemental Income and Loss · retrieved September 2026
6. IRS, S corporation employees, shareholders and corporate officers (updated 04-Jul-2026) · retrieved September 2026
7. IRS, Single member limited liability companies (updated 27-Jul-2026) · retrieved September 2026
8. IRS Publication 15 (2026), (Circular E), Employer's Tax Guide · retrieved September 2026
9. Utah State Tax Commission, Sales and Use Tax · retrieved September 2026

Ranked and explained on the sources page.