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Overdraft

An overdraft occurs when you spend or withdraw more money than what's available in your bank account, causing your balance to go negative. When a bank allows the transaction to go through despite insufficient funds, it's called an overdraft. Banks typically charge a fee — often $25 to $35 — each tim

Overdraft Definition

An overdraft occurs when you spend or withdraw more money than what's available in your bank account, causing your balance to go negative. When a bank allows the transaction to go through despite insufficient funds, it's called an overdraft. Banks typically charge a fee — often $25 to $35 — each time this happens.

Overdraft in Practice — Example

A freelance graphic designer has $150 in her business checking account. She forgot about a $200 automatic payment for her Adobe subscription. The bank processes the payment, bringing her balance to -$50, and charges a $35 overdraft fee. Now she's effectively $85 in the hole. If another small charge hits before she deposits money, she could get hit with another $35 fee — turning a $50 shortfall into over $100 in costs.

Why Overdraft Matters for Your Business

Overdraft fees are one of the most common — and most avoidable — costs for small businesses. They add up fast, especially when multiple transactions hit a negative account in the same day. Some businesses pay hundreds or even thousands per year in overdraft fees without realizing it.

Beyond the direct cost, frequent overdrafts signal cash flow management issues. They can also affect your banking relationship. Setting up alerts, maintaining a cash buffer, or opting into overdraft protection can help you avoid these unnecessary charges entirely.

How Overdraft Works

When a transaction exceeds your available balance, your bank makes a decision:

ScenarioWhat Happens
Overdraft opted inBank covers the transaction, charges a fee
Overdraft opted outBank declines the transaction, no fee
Overdraft protection linkedFunds transfer from savings or credit line, small or no fee

Under federal regulations, banks must get your opt-in consent before charging overdraft fees on debit card purchases and ATM withdrawals. However, checks and recurring ACH payments can still overdraft your account without opt-in.

Overdraft vs Insufficient Funds (NSF)

An overdraft means the bank covers the transaction and charges you a fee. An NSF (non-sufficient funds) fee is charged when the bank rejects the transaction entirely. Either way, you're paying a fee — but with NSF, the payment doesn't go through, which can cause additional problems like late fees from the vendor.

FAQ

Q: Can I turn off overdrafts on my business account?

A: Yes. You can opt out of overdraft coverage for debit card and ATM transactions. Contact your bank to adjust your preferences.

Q: How can I avoid overdraft fees?

A: Set up low-balance alerts, link a savings account for overdraft protection, maintain a cash buffer, and track recurring payments so nothing catches you off guard.

Related Terms

  • Overdraft Protection
  • Service Charge
  • Recurring Payment
  • Working Capital
  • ACH Return
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