A petty cash reconciliation form is the worksheet the fund custodian fills out at the end of each period to prove that every dollar taken from the cash box is accounted for. You list each disbursement, count the cash still in the box, and confirm that receipts plus remaining cash equal the authorized fund balance. If it balances, the form and its receipts go to a manager for approval and the fund gets replenished back to its starting amount.
What to Gather Before You Start
Pull everything out of the cash box in one sitting. You need the physical cash (bills and coins), every receipt generated during the period, and any petty cash vouchers employees filled out when they took money. A voucher is a slip recording who took the cash, how much, what it was for, and when; it pairs with the receipt the employee brings back.
You also need the fund’s authorized balance. That is the fixed amount set when the fund was established and it does not change unless management formally raises or lowers it. Small businesses commonly start funds between $100 and $500.
One boundary worth checking before you record employee reimbursements: if your business reimburses employees through petty cash, the accountable plan rules apply. The expense must have a business purpose, the employee must provide adequate documentation within 60 days of the purchase, and any excess advance must be returned within a reasonable timeframe.1Internal Revenue Service. Revenue Ruling 2003-106 Miss any of the three and the reimbursement becomes taxable wages on the employee’s W-2. The 60-day clock is the piece that trips people up most often.
The Fields on the Form
Forms vary between organizations, but the layout is consistent. Across the top go the identification fields: fund name or number, custodian’s name, and the reconciliation period’s start and end dates. These tell a reviewer which fund is being reconciled and who is responsible for it.
The middle of the form is a transaction log. Each row is one disbursement, with columns for:
- Date the purchase happened
- Payee or vendor
- A short description of what was purchased (for example, “printer paper” or “courier fee”)
- Expense category, meaning the general ledger account the expense belongs to, such as office supplies or postage
- The exact dollar-and-cent amount from the receipt
Copy amounts from receipts exactly. A $4.73 purchase is recorded as $4.73, not $5.00. Rounding across dozens of transactions creates cumulative errors that will make the reconciliation fail and can look suspicious during a review.
Below the transaction rows sits the reconciliation section. It has spaces for the total of all disbursements, the physical cash counted, the authorized fund balance, and any overage or shortage. Most forms close with signature lines for the custodian and the approving manager.
Running the Reconciliation
Once every transaction is logged, the math is simple. Count all the cash in the box, every bill and coin, and write that number on the form. Add the total of the receipts to the cash on hand. The result should equal the authorized fund balance.
The formula: Total receipts + Cash on hand = Authorized fund balance.
Say the fund is $300, receipts total $187.42, and you count $112.58 in the box. $187.42 + $112.58 = $300.00. The fund balances and the calculation is done.
When the Numbers Don’t Match
If receipts plus cash don’t equal the authorized balance, the gap is either an overage (more cash than expected) or a shortage (less). Record the discrepancy on the form. Small differences of a dollar or two usually trace to making change or a missing receipt from something like a vending machine. Larger gaps need a note explaining what you think happened, and you should flag it for the approving manager.
Discrepancies get booked to a general ledger account usually called Cash Over and Short. A shortage is recorded as an expense; an overage is recorded as revenue. Either way, the fund is topped back up to its authorized balance so the next period starts clean.
Using the earlier example, suppose receipts totaled $187.42 but only $109.58 remained in the box, meaning the fund is $3.00 short. The replenishment check would be $190.42 ($187.42 in documented expenses plus $3.00 to cover the shortage), and the $3.00 hits Cash Over and Short as an expense.
A shortage every period in the same fund is a pattern worth investigating before it grows.
Getting the Form Approved and the Fund Replenished
Once the form is filled out, send it to the approving manager together with every receipt and voucher. The manager checks that each expense looks legitimate, the math is right, and the receipts match the log. After the manager signs, the form goes to accounting, which cuts a check or cash disbursement for the total of the receipts, adjusted for any overage or shortage. That returns the cash box to its authorized balance.
Staple the completed form to its receipts and file the packet in date order. The packet is the audit trail that proves where the money went.
What the IRS Expects From Your Receipts
Petty cash purchases are deductible as ordinary and necessary business expenses, but only when you can back them up.2Office of the Law Revision Counsel. 26 USC 162 – Trade or Business Expenses Lose the receipts and you risk losing the deduction.
Travel, meals, gifts, and transportation have their own documentation threshold. You need a physical receipt or equivalent documentary evidence for any of those expenses that hits $75 or more. Below $75, you still have to be able to show the amount, date, payee, and business purpose, but a log entry or voucher can do the job without an attached receipt.3Internal Revenue Service. Publication 463 (2025) – Travel, Gift, and Car Expenses Lodging while traveling always requires a receipt regardless of amount.4GovInfo. 26 CFR 1.274-5 – Substantiation Requirements For routine purchases like office supplies or postage, no specific dollar threshold applies, but you still need records that support what you claimed.
Keep the reconciliation forms and their receipts for at least three years from the date you filed the return that included the deductions. If income was underreported by more than 25%, the IRS has six years to examine the return, so records for that long are safer. Employment tax records require at least four years.5Internal Revenue Service. How Long Should I Keep Records? Three years is the floor; that is the minimum retention that protects the deduction if the return is audited.