Handling Cash Sales and Petty Cash in Your Books

Handling Cash Sales and Petty Cash in Your Books

When you run a card transaction, it shows up in your bank feed a day or two later and your bookkeeping system can pull it in almost on its own. Cash is different. A twenty handed across the counter at a SoCo market or a food truck window never touches a bank feed, so nothing records it unless you do. That gap is the whole problem with cash. The money is real, the income is taxable, and the only thing standing between it and your books is a routine you actually follow. This is general education, not tax advice, so confirm your specific situation with a CPA or tax professional.

Count the Drawer Every Day

The habit that makes everything else work is a daily cash count. At the end of a shift or a day, you count what is in the drawer, subtract the float you started with, and that difference is your cash sales for the day. If you ran $200 in the drawer to open and counted $740 at close, you took in $540 in cash, assuming nothing was paid out of the drawer.

Tie that count to whatever your point-of-sale system or receipt book says you should have. A small variance happens and is normal. A consistent shortfall, or one big one, is a signal worth chasing down before it becomes a habit nobody questions. The IRS treats gross receipts as the income you receive from your business, and it points to cash register tapes, receipt books, and deposit information as the documents that prove those receipts, which is laid out on its page covering what kind of records to keep. Your daily count, backed by the tape or the receipts behind it, is exactly that proof.

Record the Sale, Then Record the Deposit

In your books these are two separate events, and keeping them separate is what keeps cash honest. First you record the cash sale itself, which increases your revenue and increases your cash on hand. The cash on hand is its own account in your chart of accounts, sometimes called undeposited funds or simply cash drawer, and it sits between the sale and the bank.

Then, when you take the cash to the bank, you record the deposit, which moves the money out of cash on hand and into your business checking. Do it this way and the deposit that later shows up in your bank feed matches a deposit you already recorded, so reconciling the account is clean rather than a guessing game. Skip the first step and book the money only when it hits the bank, and you have no record of sales between the counter and the branch, which is where cash quietly goes missing.

Two things make this far easier. Deposit your cash regularly rather than letting it pile up, since a stack of mixed deposits is much harder to trace back to specific days. And run all of it through a dedicated business account, which is one more reason keeping business and personal money separate matters. Cash is the easiest thing in the world to slip into your own pocket and forget, and that single habit is how owners accidentally understate income or lose track of what the business actually earned.

Petty Cash Is a Fund, Not a Loose Twenty

Petty cash is the small stash you keep on hand for the little expenses that are not worth a card swipe, a roll of stamps, parking at a client meeting, an emergency box of register tape. Treated casually it becomes a black hole. Treated as a fund with simple rules, it stays clean.

Start by setting a fixed amount, say $200, and writing one check or making one transfer to fund it. That moves $200 from your checking into a petty cash account in your books and into an actual locked box or envelope. From that moment the rule is unbreakable: every time cash leaves the box, a receipt goes in. At any point the cash in the box plus the receipts in it should add up to your original $200. That is the entire control, and it is the reason a fund works where a loose twenty does not.

Replenishing the Fund

You do not record petty cash expenses one by one as they happen. You record them when you refill the fund. When the box runs low, total up the receipts inside it. Say they come to $160 across supplies, postage, and a couple of small repairs. You write a check or transfer for $160 to bring the box back to its original $200, and that is the moment you book those expenses into their proper categories.

So the entries are not the $200 you started with, which was just moving your own money into a different spot. The real expenses get recorded at replenishment, sorted by what the receipts were actually for. This keeps the small stuff in your books without drowning you in tiny transactions, and it keeps the fund self-policing, because if the math does not work at refill time you know it before too much has slipped by.

Why Unrecorded Cash Is a Real Risk

It can feel like cash that nobody logged simply did not happen, but that is the trap. Cash income is income, it is taxable, and it is reportable the same as anything that ran through a card reader. Leaving it out understates your revenue, which means an inaccurate set of books and a tax return that does not reflect what the business earned. The IRS lays out the basics of recordkeeping for small businesses, and the through line is that your records need to clearly show your income, cash very much included.

There is a quieter cost too. Books that ignore cash give you a false read on your own business. You think margins are thin or a slow month was slower than it was, when really a chunk of revenue was simply never recorded. Accurate cash handling is not only about staying on the right side of the rules, it is about actually knowing your numbers. Hold on to the support behind all of it, the tapes, the receipts, the deposit slips, for the same reason and the same periods covered in our guide to how long to keep business records.

Build the Routine Once

None of this is complicated, it just has to be consistent, and that is harder when the day is busy and the line is out the door. Cash-heavy operations feel this most, which is part of why food trucks and mobile vendors need cash procedures built for how they actually work. Count the drawer daily, record the sale and the deposit as two steps, run petty cash as a fixed fund replenished against receipts, and bank your cash on a regular rhythm.

Set that up once and cash stops being the part of the books you dread. If you want help putting the routine in place or want your accounts reconciled so the cash side ties out cleanly, our small business bookkeeping and bank reconciliation services handle exactly this. The goal is simple. The cash that crosses your counter should land in your books as faithfully as the money that runs through your card reader.