A business overdraft works as a revolving credit line built into your company checking account: once the bank approves a limit, the account is allowed to go negative up to that amount whenever payments exceed the available balance, and the bank charges interest only on the portion you actually use. Deposits coming into the account automatically pay the negative balance back down. There is no draw request, no fixed installment, and no new application each time cash runs short.
How Funds Are Drawn and Repaid
The facility activates on its own. When a payment or withdrawal would push the checking account below zero, the bank covers it up to the approved limit instead of bouncing it. From your side, the transaction simply clears.
Repayment is just as automatic. Any money that lands in the account — a customer payment, a card settlement, a cash deposit — is applied against the negative balance first. As long as you stay within the limit, there is no scheduled principal payment. Interest accrues daily on whatever you have drawn, and the bank debits that accrued interest from the same account on a monthly cycle.
Go over the limit and the arrangement changes quickly. The bank may charge penalty fees, decline further transactions, or both. Even when you stay inside the parameters, most overdraft facilities are subject to annual review, and the bank can reduce or withdraw the line at renewal.
Secured, Unsecured, and Personal Guarantees
Banks offer business overdrafts as either secured or unsecured, and the choice drives your limit, your rate, and what the lender can reach if the business cannot pay.
In a secured arrangement, the lender takes a legal interest in specific business assets: real estate, equipment, inventory, or receivables. These arrangements fall under Uniform Commercial Code Article 9, which requires the lender to file a financing statement (a UCC-1 filing) with the appropriate state office to establish priority over other creditors.1Cornell Law School. Uniform Commercial Code 9-310 – When Filing Required to Perfect Security Interest or Agricultural Lien Filing fees generally run between $10 and $100 depending on the state. Secured overdrafts typically carry higher limits and lower rates because the lender has a direct claim on something if you default.
Unsecured overdrafts skip the collateral but almost always require a personal guarantee from one or more owners. A personal guarantee makes you individually liable if the business fails to pay. Wells Fargo, for example, requires owners holding 25% or more of the business to personally guarantee the credit line, with the guarantors covering at least 51% of combined ownership.2Wells Fargo. Small Business Lines of Credit FAQs That exposes your personal savings, home equity, and investments to the lender if the business defaults.
Federal law limits when a spouse can be pulled into the guarantee. Under Regulation B, which implements the Equal Credit Opportunity Act, a lender cannot require your spouse’s signature if you individually qualify for the credit based on your own income and assets.3Consumer Financial Protection Bureau. Regulation B 1002.7 – Rules Concerning Extensions of Credit A spousal signature may be required only in narrow circumstances, such as when you are relying on jointly owned property as collateral and state law requires your spouse’s consent to reach it.
What a Business Overdraft Costs
The total cost of an overdraft is a stack: interest on what you use, upfront and recurring fees, and sometimes a charge on what you don’t use.
Interest Rates
Overdraft interest is normally quoted as a margin over a benchmark, either the Prime Rate or the Secured Overnight Financing Rate (SOFR). As of early 2026, the Prime Rate sits at 6.75% and SOFR at approximately 3.67%.4SEC.gov. EX-10.2 Line of Credit Note A typical overdraft might charge Prime plus 1% to 3%, or SOFR plus a similar spread, putting effective rates in the range of roughly 7% to 10% depending on the borrower’s credit and the size of the facility. Interest is calculated daily on the drawn portion only.
Setup, Maintenance, and Renewal Fees
Most banks charge a one-time setup fee when the facility is first put in place. Ongoing costs may include a monthly service charge or an annual fee. Wells Fargo charges an annual fee of $95 for smaller lines and $175 for lines above $25,000, waived in the first year. Because overdrafts are usually reviewed every year, many banks also charge a renewal or anniversary fee to extend the facility; Wells Fargo’s Prime Line product charges 0.25% of the line amount at renewal.2Wells Fargo. Small Business Lines of Credit FAQs
Unused Facility Fees
Some lenders charge an unused facility fee: a percentage, often between 0.25% and 1.5% annually, applied to the portion of the credit limit you have not drawn. If your approved limit is $100,000 and your average drawn balance is $40,000, the fee applies to the remaining $60,000. This is the bank’s charge for keeping capital available that you have not borrowed.
Fee structures vary widely between banks, so comparing the total annual cost — not just the headline interest rate — is the right way to shop the product.
Applying For and Activating the Facility
Lenders assess an overdraft application the same way they assess any commercial credit request. Before you apply, pull together:
- Current profit-and-loss statements and balance sheets covering at least the two most recent fiscal years.
- Federal business tax returns: Form 1120 for corporations or Form 1065 for partnerships. Sole proprietors generally provide the Schedule C filed with their personal return.5Internal Revenue Service. About Form 1120, U.S. Corporation Income Tax Return6Internal Revenue Service. About Form 1065, U.S. Return of Partnership Income
- Proof that the business is properly registered, such as a certificate of good standing (also called a certificate of existence or certificate of status, depending on the state) or articles of incorporation.
- The routing and account numbers for the business checking account that will carry the overdraft.
- Personal financial information and credit authorization for any required guarantor.
Figures on the application have to match the supporting statements exactly; discrepancies cause delays or denials. A short note explaining how you plan to use the overdraft — covering payroll gaps, bridging seasonal dips, smoothing supplier payment timing — helps the lender set an appropriate limit.
Most banks accept applications through a secure online portal, though you can also apply in person with a commercial loan officer. If approved, the bank issues an offer letter spelling out the limit, rate, fees, security, and repayment terms. Once you and any guarantors sign the loan agreement and the bank processes the executed documents, the limit goes live on the linked checking account. The timeline runs from a few days for a small unsecured facility to several weeks for a larger secured one that requires appraisals or additional legal documentation.
When the Bank Can Demand Repayment
A business overdraft is often structured as a demand instrument, and this is the feature that catches borrowers off guard. The bank can require full repayment of the outstanding balance at any time, even if you have not broken any term of the agreement. A typical overdraft agreement states that all amounts are “repayable forthwith on demand” and that the bank may “terminate the availability of the Facility immediately and/or declare all amounts outstanding hereunder immediately due and payable.”7Justia Forms. Overdraft Facility Agreement Between Escalade Inc. and JPMorgan Chase Bank, N.A., London Branch
Specific events can also trigger acceleration or cancellation:
- Missing an interest payment or exceeding the limit without correction within any grace period.
- Falling below agreed financial covenants, such as a minimum revenue-to-debt ratio.
- Defaulting on any other loan or credit agreement with a third party (a cross-default).
- Providing inaccurate financial information in the application or during the facility’s term.
- Filing for bankruptcy or becoming unable to pay debts as they come due.
If the overdraft is secured, the bank can move on the pledged collateral after demanding repayment. If a personal guarantee is in place, the lender can pursue the guarantor’s personal assets. Because of this demand nature, an overdraft is best treated as a short-term cash management tool rather than a permanent source of funding.
How the Overdraft Affects Your Credit
A business overdraft used in good standing normally appears on your business credit report but does not show up on your personal credit, even if you signed a personal guarantee. The guarantee generally only reaches personal credit if the business defaults and the lender reports the default or sends the account to collections against you individually.
A default is costly. The unpaid balance may be reported to personal credit bureaus, and any resulting judgment or collection action becomes part of your personal credit history. Payment history carries heavy weight in credit scoring, so a single overdraft default can drop both business and personal scores meaningfully. If the business is struggling to stay within the overdraft terms, raising it with the bank and asking about a restructured repayment is less damaging than letting the facility go into default.
Consumer Overdraft Protections Do Not Apply
Business checking accounts sit outside the overdraft rules that protect personal accounts. Regulation E, which implements the Electronic Fund Transfer Act, defines a covered account as one established “primarily for personal, family, or household purposes” and defines a consumer as a “natural person.”8eCFR. 12 CFR Part 1005 – Electronic Fund Transfers (Regulation E) The CFPB has confirmed that the overdraft opt-in requirements in Section 1005.17 “do not apply to accounts held by businesses.”9Consumer Financial Protection Bureau. 12 CFR Part 1005 – Electronic Fund Transfers (Regulation E)
In practice, the bank is not required to get your affirmative consent before charging overdraft fees on a business account, and the consumer disclosure rules do not apply. Your rights sit entirely in the overdraft agreement itself, so the fee schedule, the demand-repayment language, and the circumstances under which the facility can be reduced or canceled are worth reading closely before signing.
Tax Treatment of Interest and Fees
Interest paid on a business overdraft is generally deductible as an ordinary and necessary business expense, the same as interest on any other business borrowing. Setup charges, annual maintenance fees, and renewal fees tied to the overdraft are also deductible when incurred on a business account used for business purposes.
Businesses with larger interest expenses should be aware of the Section 163(j) limitation, which caps the business interest you can deduct in a given year. The deductible amount cannot exceed business interest income plus 30% of adjusted taxable income, with any disallowed interest carried forward to future years.10Internal Revenue Service. Questions and Answers About the Limitation on the Deduction for Business Interest Expense Most small businesses with modest overdraft balances fall well below the threshold, but companies carrying significant debt across multiple facilities should factor the cap into their tax planning.