A business overdraft works as a revolving credit line built into your company’s checking account: when a payment would take the balance below zero, the bank covers it up to a pre-approved limit and charges interest only on the amount you actually go negative. Deposits into the account automatically pay the borrowed amount back down. There is no separate draw request, no fixed installment schedule, and no need to reapply each time cash runs short.
How the Account Goes Negative and Repays Itself
Once the facility is active, the mechanics are almost invisible from day to day. A payment clears, a card settles, a supplier gets paid — and if the balance would drop below zero, the account simply dips into negative territory instead of bouncing the transaction. You do not transfer funds or ask the bank to release anything. The limit is the ceiling on how far negative the account can go.
Repayment runs in the same automatic direction. Any money that lands in the account reduces the negative balance first before it shows as available cash. There is no monthly principal payment as long as you stay inside the approved limit. Interest accrues daily on whatever portion of the limit is actually in use, and the bank debits that interest from the same account, typically once a month.
Cross the limit and the arrangement changes character quickly. The bank may charge penalty fees, decline further transactions, or both. Most overdraft facilities are also subject to annual review, and at renewal the bank can reduce or withdraw the limit even if you have used it responsibly.
What a Business Overdraft Costs
Total cost breaks into a few pieces, and comparing offers on interest rate alone can be misleading.
Interest Rate
Overdraft interest is usually 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%.1SEC.gov. EX-10.2 Line of Credit Note A typical overdraft might price at Prime plus 1% to 3%, or a similar spread over SOFR, putting effective rates roughly in the 7% to 10% range depending on the borrower and the size of the facility. Interest accrues daily and only on the drawn portion.
Setup, Monthly, and Annual Fees
Most banks charge a one-time setup fee when the facility is opened, and many add a monthly service charge or an annual fee on top of interest. Wells Fargo, for example, charges an annual fee of $95 on smaller lines and $175 on lines above $25,000, waived in the first year.2Wells Fargo. Small Business Lines of Credit FAQs Fee structures vary widely between banks, so the total annual carrying cost matters more than the headline rate.
Unused Facility Fee
Some lenders charge an unused facility fee, applied as a percentage — often between 0.25% and 1.5% annually — on the part of your limit you have not drawn. If your limit is $100,000 and you use an average of $40,000, the unused fee applies to the remaining $60,000. The bank is being compensated for keeping capital available on standby.
Renewal Fee
Because most overdrafts are reviewed annually, banks commonly charge a renewal or anniversary fee to extend the facility for another term. This can be a flat amount or a percentage of the credit limit. Wells Fargo’s Prime Line product charges 0.25% of the line amount at renewal.2Wells Fargo. Small Business Lines of Credit FAQs
Interest paid on a business overdraft is generally deductible as an ordinary and necessary business expense, and the associated bank fees are usually deductible too when the account is used for business purposes.
Secured, Unsecured, and Personal Guarantees
Banks structure business overdrafts either as secured or unsecured facilities, and that choice drives your limit, your rate, and what the lender can reach if you default.
In a secured arrangement, the bank takes a legal interest in specific business assets — real estate, equipment, inventory, or accounts receivable — to reduce its risk. 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.3Cornell Law School. Uniform Commercial Code 9-310 – When Filing Required to Perfect Security Interest or Agricultural Lien Filing fees generally run from $10 to $100. Secured facilities usually come with higher limits and lower interest rates.
Unsecured overdrafts skip the collateral but almost always require a personal guarantee from one or more owners. A personal guarantee makes the individual owner legally responsible for the debt if the business defaults. At Wells Fargo, owners holding 25% or more of the business must personally guarantee the credit line, and the guarantees have to cover at least 51% combined ownership.2Wells Fargo. Small Business Lines of Credit FAQs The guarantee exposes personal savings, home equity, and investments, so the scope of that liability is worth understanding before signing.
One protection worth knowing: under Regulation B, which implements the Equal Credit Opportunity Act, a lender cannot require your spouse’s signature or guarantee if you individually qualify for the credit on your own income and assets.4Consumer Financial Protection Bureau. Regulation B 1002.7 – Rules Concerning Extensions of Credit A spouse’s signature may be required only in narrow situations, such as when you rely on jointly owned property as collateral and state law requires the spouse’s consent to reach it.
What You Need to Apply
Lenders review an overdraft request the same way they review any commercial credit application. Expect to provide:
- 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 provide 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 the business is properly registered — a certificate of good standing (also called a certificate of existence or certificate of status in some states) or articles of incorporation.
- Routing and account numbers for the business checking account the overdraft will attach to.
- If a personal guarantee is required, a personal financial statement from each guarantor. The lender will also pull the guarantor’s credit report.
Numbers on the application need to match the supporting statements exactly; discrepancies cause delays or denials. A short explanation of how you plan to use the overdraft — bridging payroll gaps, smoothing seasonal revenue dips, timing supplier payments — helps the lender set an appropriate limit.
The Bank Can Demand Repayment at Any Time
A feature that catches many first-time borrowers off guard: business overdrafts are typically structured as demand instruments. The bank can require full repayment of the outstanding balance at any time, even when you have not broken any term of the agreement. A typical contract states that 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
Beyond the general demand right, specific events commonly trigger acceleration or cancellation:
- Missing a required interest payment, or exceeding the limit without curing within any grace period.
- Falling below agreed financial covenants, such as a minimum revenue-to-debt ratio.
- Cross-default: defaulting on another loan or credit agreement with a third party.
- Providing inaccurate financial information in the application or during the term of the facility.
- Filing for bankruptcy or becoming unable to pay debts as they come due.
If the overdraft is secured, the bank can move against the pledged collateral after demanding repayment. If a personal guarantee is in place, the lender can pursue the guarantor’s personal assets. Because of the demand feature, treating the overdraft as a short-term cash-management tool rather than a permanent source of funding is prudent. Keep a plan for how you would clear the balance if the bank called it.
Credit Reporting and Consumer-Protection Boundaries
A business overdraft in good standing generally appears on your business credit report but does not show up on your personal credit report, even if you signed a personal guarantee. The guarantee normally affects your personal credit only if the business defaults and the lender reports it or pursues you personally in collections. When that happens, the impact can be significant on both business and personal scores because payment history is one of the largest scoring factors.
Business accounts also sit outside the overdraft rules that protect consumer accounts. Regulation E, which implements the Electronic Fund Transfer Act, covers accounts 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)
Practically, the bank does not need your affirmative consent before charging overdraft fees on a business account, and the consumer disclosure rules do not apply. Your rights come from the overdraft agreement itself. Read the fee schedule, the demand clause, and the review and cancellation provisions carefully, because no federal regulator is going to fill in the gaps for you.