Corporate accounts are bank accounts, credit products, and investment vehicles held in a business entity’s name rather than an owner’s. They exist to keep company money legally and operationally separate from personal finances, and that separation is what protects the owner’s home, savings, and other personal assets from business debts and lawsuits. Every corporation and LLC needs at least a dedicated checking account; most also carry savings, credit, and sometimes investment or treasury accounts as the business grows.
The rest of this piece walks through what each type of corporate account does, the legal reasons the separation matters, how banks decide who can operate the account, and exactly what you need to bring to open one.
Why the Separation Matters
The legal reason to keep dedicated corporate accounts is to preserve what lawyers call the “corporate veil,” the barrier that shields owners’ personal assets from company liabilities. When an owner runs personal expenses through the business account, or drops business revenue into a personal checking account, courts call that commingling. It’s one of the most common reasons a judge will pierce the veil and hold the owners personally responsible for what the company owes.
Separation also makes tax filing cleaner. A C corporation reports income on IRS Form 1120; an S corporation uses Form 1120-S.1Internal Revenue Service. About Form 1120, U.S. Corporation Income Tax Return2Internal Revenue Service. About Form 1120-S, U.S. Income Tax Return for an S Corporation When every business transaction flows through a corporate account, the numbers on those returns line up directly with the bank statements, which matters a great deal if the IRS ever wants to see the underlying records.
Who Has Authority to Operate the Account
Authority over a corporate account doesn’t automatically belong to whoever happens to be CEO or managing member. It comes from a corporate resolution, a document adopted by the board of directors or managing members that names the specific individuals allowed to open accounts, sign checks, initiate wire transfers, and otherwise commit the company financially.3Federal Reserve Bank Services. Certificate of Resolutions Authorizing an Institution to Open and Maintain Accounts and Use Services Banks require a copy of this resolution before opening the account, and they will refuse transactions from anyone not listed on it.
Keep the resolution current whenever officers or members change. If an unauthorized employee signs off on a large payment, the bank has grounds to reject it. If a signer with authority drains the account, the resolution is the document that determines who could act on the company’s behalf.
Types of Corporate Accounts
Corporate Checking
The checking account is the operating hub. Customer payments come in, vendor payments and payroll go out. Business checking accounts generally offer higher daily transaction limits than personal accounts and bundle in commercial services: remote deposit capture, ACH origination for direct-deposit payroll, and detailed transaction exports that feed into accounting software.
Savings and Money Market Accounts
A corporate savings account holds reserves the business doesn’t need for daily spending. A common benchmark is three to six months of operating expenses, though the right cushion depends on how predictable the company’s revenue is and how quickly it could tap credit in an emergency.
For larger cash balances, a corporate money market account pays a higher yield by investing in short-term, low-risk instruments such as U.S. Treasury bills. Many banks pair money markets with sweep functionality that moves excess funds out of checking overnight and back again when they’re needed, so idle cash keeps earning.
Corporate Credit Cards and Lines of Credit
A corporate credit card lets the company handle procurement, travel, and everyday spending while building a formal credit history in the business’s name. Employee cards integrate with expense-reporting tools, and the liability for the balance sits with the corporation rather than the cardholder.
One caveat trips up many small-business owners: most issuers require a personal guarantee from the owner or a principal before approving a corporate card. A personal guarantee makes you personally responsible for the outstanding balance if the business can’t pay. If the company defaults, the issuer can pursue your personal accounts and assets, and missed payments can hit your personal credit report. Some guarantees cap your exposure at a fixed dollar amount; others are unlimited. Cards without a personal guarantee generally require the business itself to show strong revenue, significant assets, or an established credit history.
A corporate line of credit is a pre-approved borrowing limit the company can draw on, repay, and draw on again. Interest accrues only on what’s actually borrowed, which makes it useful for bridging the gap between paying vendors and collecting on customer invoices.
Corporate Brokerage and Treasury Accounts
Once operating reserves are fully funded, surplus cash can go into a corporate brokerage account holding stocks, bonds, index funds, and other securities the business doesn’t need for near-term operations. Investment gains are taxed at the flat 21% federal corporate rate.
Larger companies use treasury management accounts, typically built around a sweep, to keep every dollar working. Cash above a target checking balance moves automatically into overnight investments and returns the next morning. The mechanics stay in the background; the effect is that money that would otherwise sit at zero interest earns a return.
Employer-Sponsored Retirement Plans
A 401(k) or similar qualified plan is technically a corporate account, in the sense that the corporation sets it up and administers it. The plan’s assets belong to the individual participants, but the company carries fiduciary responsibility for running the plan in the participants’ interest under the Employee Retirement Income Security Act.4U.S. Department of Labor. Fiduciary Responsibilities Employer contributions are deductible as a business expense, up to 25% of the total compensation paid to eligible participating employees.5Internal Revenue Service. Retirement Topics – 401(k) and Profit-Sharing Plan Contribution Limits
How FDIC Insurance Works for Business Deposits
Corporate deposits at an FDIC-insured bank are covered up to $250,000 per ownership category, per bank.6FDIC. Understanding Deposit Insurance A corporation or LLC that qualifies as an “independent activity” (meaning it exists for a genuine business purpose and not simply to multiply insurance coverage) gets its own insurance category, separate from any personal deposits of its owners or employees at the same bank.7FDIC. Corporation, Partnership and Unincorporated Association Accounts
A detail worth knowing: if your corporation holds a checking account, savings account, and money market account at the same bank, FDIC insurance does not cover each one separately. All deposits in the same ownership category at one bank are added together, and the combined total is insured up to $250,000.6FDIC. Understanding Deposit Insurance Businesses holding more than that at a single institution often spread deposits across multiple banks or use a deposit-placement service that does it automatically.
Fraud Protection Is Weaker on Business Accounts
This is where corporate accounts are meaningfully worse than personal ones, and most business owners don’t find out until something goes wrong. Federal Regulation E, which caps consumer liability for unauthorized debit-card charges and electronic transfers, does not apply to business accounts.8FDIC. Do Consumer Laws Apply to My Business Accounts A consumer who reports an unauthorized transfer within two business days can lose no more than $50.9Consumer Financial Protection Bureau. 1005.6 Liability of Consumer for Unauthorized Transfers A business has no equivalent federal cap.
Instead, liability for unauthorized wires and ACH debits from commercial accounts falls under Article 4A of the Uniform Commercial Code. The default rule puts the loss on the bank, but Article 4A lets the bank shift that loss to the customer if it offered a “commercially reasonable” security procedure such as multi-factor authentication or callback verification, and followed it. If your company declined the bank’s security procedure or agreed in writing to be bound by any authorized payment order, the loss is yours.
Because the legal backstop is thinner, businesses need to actually use the fraud tools banks offer. Positive pay lets you upload every check you issue by number, amount, and payee, and the bank rejects anything that doesn’t match. ACH positive pay works the same way for electronic debits. ACH debit blocks reject all incoming ACH debits unless you’ve whitelisted the originator. These services carry monthly fees, but the cost of a single successful fraud on a business account, with no federal cap in the way, dwarfs the subscription.
How to Open a Corporate Account
Get an EIN
Every corporate account starts with an Employer Identification Number, a nine-digit number the IRS assigns to identify the business for tax reporting.10Internal Revenue Service. Understanding Your EIN You can apply online at irs.gov and receive the number immediately. The bank uses the EIN the way it uses a Social Security number for individuals: it ties the account to the company’s tax identity and drives IRS reporting on interest and other payments.11Internal Revenue Service. Employer Identification Number
Bring Your Formation Documents and Corporate Resolution
The bank will ask for the company’s formation documents, Articles of Incorporation for a corporation or Articles of Organization for an LLC, to confirm the entity legally exists and is registered with the state. You’ll also need the corporate resolution or board minutes naming who can operate the account.3Federal Reserve Bank Services. Certificate of Resolutions Authorizing an Institution to Open and Maintain Accounts and Use Services
If the business operates under a trade name that differs from its legal name (a DBA, for “doing business as”), bring the DBA certificate or fictitious name filing too. Some banks also want a Certificate of Good Standing from the state to verify the entity is current on its filings. State fees for these certificates are typically $5 to $25.
Identify the Beneficial Owners
Federal anti-money-laundering rules require the bank to identify the real people behind every business entity opening an account. Under FinCEN’s Customer Due Diligence rule, the bank must collect the name, date of birth, address, and government-issued ID for two groups: anyone owning 25% or more of the company’s equity, and at least one individual with significant day-to-day control, such as the CEO, CFO, or managing member.12eCFR. Title 31 CFR 1010.230 – Beneficial Ownership Requirements for Legal Entity Customers The bank will verify this information and may run checks against government watchlists as part of its Bank Secrecy Act compliance.13Financial Crimes Enforcement Network. The Bank Secrecy Act
This is a separate obligation from the Corporate Transparency Act’s beneficial ownership information (BOI) reporting to FinCEN directly. As of March 2025, FinCEN exempted all U.S.-formed companies from that filing requirement; only foreign entities registered to do business in the United States currently have to submit BOI reports.14Financial Crimes Enforcement Network. Beneficial Ownership Information Reporting The bank’s own CDD identification requirements remain in full effect regardless.
Prove the Business Address
The bank will ask for proof of the company’s physical operating location, such as a utility bill or lease agreement, to confirm the business actually operates where it says it does.
Keeping the Account, and the Corporate Veil, Intact
Opening the account is only the first step. The account only serves its liability-shielding purpose if you use it consistently: all business income flows into it, all business expenses flow out of it, and personal spending stays entirely separate. Pay yourself through a documented salary or owner distributions rather than pulling cash from the business account when you need it. If a court sees a pattern of personal charges on the corporate card or business deposits landing in a personal checking account, the corporate veil starts to look like a formality rather than a real separation, and the liability protection you set the account up to preserve is exactly what you lose.