Petty cash comes from your checking account, but you withdraw it in cash and keep it separate

Petty cash is money you pull out of your checking account in physical cash and store in a box, envelope, or drawer to pay for small, everyday expenses—office supplies, postage, tips, emergency repairs. You decide how much to withdraw, how often, and what you use it for. The money itself comes from your checking account balance, but once it's in your hand, it's no longer tracked by your bank—you track it yourself.

The process is straightforward: you withdraw cash from an ATM or teller window using your debit card or by writing a check to yourself. That withdrawal reduces your checking account balance immediately. From that point on, you're responsible for keeping records of how you spend it, because your bank won't.

Key Takeaways

  • Petty cash is physical cash you withdraw from your checking account and store separately to pay small expenses without writing checks or using a card.
  • You can withdraw petty cash at an ATM using your debit card, at a teller window, or by writing a check to yourself and cashing it.
  • Once withdrawn, the money is your responsibility to track—your bank records the withdrawal, but not how you spend the cash.
  • Most small businesses keep petty cash in a locked box and record each expense in a log or receipt envelope to stay organized for tax purposes.
  • Petty cash works best for expenses under $20 to $50 per transaction; larger amounts are usually better handled by check or card.

Three ways to pull petty cash from your checking account

ATM withdrawal is the fastest method. Insert your debit card, enter your PIN, select the withdrawal amount, and take your cash. The transaction posts to your account within seconds or minutes. Most ATMs dispense in $20 increments, though some allow $10 or $5 withdrawals. Your bank may charge a fee if you use an out-of-network ATM.

Teller withdrawal gives you more flexibility. Walk into your bank branch, tell the teller you want to withdraw cash, and specify the amount and denominations you want (five $20 bills, ten $5 bills, and so on). The teller counts it out and hands it to you. This method works well if you want smaller bills or a specific total that doesn't fit ATM increments.

Check to yourself is useful if you're away from your bank or ATM. Write a check payable to yourself for the amount you want, then cash it at your bank or a check-cashing service. This creates a paper trail in your checking account register and is often preferred by businesses for accounting purposes. Some banks charge a small fee for cashing checks written on your own account, though most do not.

How much petty cash to keep on hand

The amount depends on your spending patterns and how often you want to make withdrawals. A household might keep $50 to $100 in petty cash. A small office might keep $200 to $500. The goal is to have enough to cover a week or two of small expenses without needing to withdraw again, but not so much that you're holding large amounts of cash at risk.

Consider how often you spend cash and on what. If you buy coffee, parking, and supplies several times a week, a larger float makes sense. If you rarely use cash, $25 to $50 is enough. The trade-off is security: more cash on hand means more to lose if it's stolen or misplaced.

Tracking petty cash so you know where it went

Your bank records the withdrawal from your checking account, but it does not track how you spend the cash. You have to do that yourself. The simplest method is a small notebook or log where you write the date, amount spent, and what it was for each time you take money from the petty cash box. Some people use an envelope labeled "Petty Cash" and tape receipts inside it.

For a business, this record-keeping matters for taxes. The IRS expects you to show how business expenses were paid. If you claim $500 in office supplies but have no record of what you bought or when, you're vulnerable in an audit. A petty cash log with receipts or handwritten notes protects you. At the end of the month or quarter, add up the log, make sure it matches the cash you've spent, and file the receipts.

A simple petty cash log includes four columns: date, description (what you bought), amount, and running balance. When you withdraw $100, write that down. When you spend $8 on stamps, write that down. When the cash runs low, you know exactly how much you spent and on what.

When to replenish your petty cash from checking

Replenish petty cash when it drops below a level where you can't cover your normal weekly expenses. If you usually keep $100 and you're down to $15, it's time to withdraw another $100 from your checking account. Some people replenish on a set schedule—every Friday or the first of the month—so the routine is automatic.

Before you replenish, reconcile what you spent. Add up your petty cash log and make sure the total matches the amount missing from your cash box. If you withdrew $100 and your log shows $87 in expenses, you should have $13 left. If you have $5, something is unaccounted for. Finding the discrepancy before you replenish keeps your records accurate.

Petty cash versus using your debit card for small expenses

Petty cash and a debit card serve the same purpose but work differently. A debit card transaction posts to your checking account immediately and creates an automatic record. Petty cash requires manual tracking but gives you cash in hand without waiting for a transaction to process. Petty cash also works at places that don't take cards—some parking meters, vending machines, or small vendors who only take cash.

Many people use both. They keep petty cash for true small expenses (tips, parking, emergency supplies) and use a debit card for anything over $10 or $20. This hybrid approach keeps your checking account record clean for larger expenses while maintaining the convenience of cash for the smallest ones.

Frequently Asked Questions

Does withdrawing petty cash count as a debit to my checking account?

Yes. When you withdraw $100 in cash, your checking account balance drops by $100 immediately. Your bank records it as a withdrawal, just like any other cash withdrawal. The difference is that your bank doesn't track what you do with the cash after that—only you do.

Can I write a check to myself for petty cash?

Yes. Write a check payable to yourself, deposit it if needed, then cash it at your bank or a check-cashing service. This creates a clear record in your checking account register. Some businesses prefer this method because it leaves a paper trail for accounting and tax purposes.

What happens if I lose petty cash?

The money is gone. Unlike a debit card transaction, which you can dispute with your bank, cash has no protection. This is why many people keep petty cash in a locked box or drawer and limit how much they hold at once. If you lose $20, you've lost $20; if you lose $200, the loss is bigger.

Do I need to report petty cash withdrawals to the IRS?

The withdrawal itself is not reported separately—it's just a withdrawal from your checking account. But if you're a business owner, you need to track and report what you spent the cash on. Keep receipts and a petty cash log so you can show the IRS that the money went to legitimate business expenses.

Can I use petty cash for personal and business expenses?

You can keep separate petty cash boxes—one for personal and one for business—but mixing them makes tax reporting harder. If you're self-employed or run a business, keep business petty cash separate and track it carefully. Personal petty cash doesn't need the same level of documentation, but keeping them apart keeps your records clean.