Petty Cash Management: A Simple System That Stops Small Leaks

A courier needs a parking fee. The printer runs out of paper. A customer's parcel needs extra tape. None of these is worth a bank transfer, so somebody reaches into the drawer. A month later the drawer is short and nobody remembers why. Petty cash is small by definition, and it is one of the commonest places where a business loses money and trust.

What petty cash is for

It is a small amount of cash kept on hand for minor business expenses:

• Parking, tolls and short transport.
• Delivery fees and tips.
• Drinking water, cleaning supplies.
• Small office items.
• Minor urgent repairs.

It is not for salaries, supplier payments, loans to staff or the owner's personal needs. Anything larger or regular should go through the bank.

The imprest method

The simplest reliable system has one idea at its core: the fund is always a fixed amount.

1. Set the float. Say Rp 1,000,000.
2. Spend from it, taking a receipt or writing a voucher for every payment.
3. At any time, cash in the box plus receipts equals Rp 1,000,000.
4. When it runs low, total the receipts and top the fund up by exactly that amount.

If Rp 730,000 was spent, there is Rp 270,000 in cash and Rp 730,000 in receipts. You reimburse Rp 730,000, the receipts go to bookkeeping, and the box is back to Rp 1,000,000.

Because the total never changes, a shortage is visible immediately.

Setting it up

Choose a custodian. One person holds the box and is responsible for it. When two or three people have access, nobody is accountable. Name a backup for absences, with a handover count.

Fix the float. Enough for two to four weeks of normal small spending.

Set a limit per payment. For example, nothing above Rp 200,000 from petty cash. Larger amounts go through the bank.

List what is allowed. A short written list of permitted uses avoids arguments.

Use a lockable box kept in a secure place.

Prepare vouchers. A simple slip with date, amount, purpose, who received the cash and who approved it.

Recording each payment

Every time cash leaves the box:

1. Get a receipt from the seller where possible.
2. If there is no receipt, as with parking or a tip, write a voucher and have the person who received the money sign it.
3. Enter it in the petty cash log: date, description, amount, category, running balance.
4. Attach the receipt or voucher.

When someone takes an advance to buy something, record it as an advance and settle it the same day with the receipt and the change. Unsettled advances are how the fund quietly disappears.

Counting and reconciling

Weekly, by the custodian. Count the cash, total the receipts and check that they add up to the float. Ten minutes.

At each top-up. Someone other than the custodian checks the receipts, confirms the total and approves the reimbursement.

Occasionally, by surprise. The owner or manager counts the box without notice. This is not a sign of distrust. It protects the custodian as much as the business, because it shows the fund is in order.

If the count does not match:

• Recount, and check for vouchers not yet written.
• Record any real difference as a shortage or overage. Do not hide it.
• Look for a pattern. An occasional small difference is normal. A repeated shortage needs a conversation and a tighter process.

Posting to the books

Petty cash expenses still belong in the accounts. At each top-up:

• Sort the receipts by category: transport, supplies, delivery and so on.
• Record the total of each category as an expense.
• Record the reimbursement as a transfer from the bank to petty cash.

Skipping this step makes expenses look lower than they are, and the bank withdrawal sits unexplained.

Common problems and fixes

"Borrowing" from the box. Staff or the owner take cash intending to return it. Rule: no loans from petty cash, including for the owner.

Missing receipts. Rule: no receipt or signed voucher, no reimbursement.

The fund runs out constantly. Either the float is too small or it is being used for things that should go through the bank. Review the log.

Everything is "miscellaneous". Categorise properly. A petty cash log is a useful record of small recurring costs you could reduce.

Mixing with sales cash. Keep petty cash separate from the till. Sales cash should be banked in full, and petty cash topped up from the bank.

One person does everything. The person who holds the cash should not also be the one who approves top-ups and records them in the books.

Reducing the need for cash

Many small payments no longer need cash. E-wallets, a company debit card with a low limit, and reimbursement by transfer leave an automatic record. A smaller cash float means less to count and less to lose. Keep the same discipline: a receipt for everything and a category for each expense.

A one-page policy

Write it down and have the custodian sign it:

• The float amount.
• Who the custodian and the backup are.
• The limit per payment.
• What is allowed and what is not.
• Receipts or vouchers required for everything.
• Advances settled the same day.
• Weekly count and who approves top-ups.

A page of rules, followed, is all the system a small business needs.

Polynusa lets staff record a small expense by photographing the receipt, files it under the right category in the books and keeps the petty cash balance visible. See the plans on the pricing page.

Summary

Keep a fixed float with one custodian. Take a receipt or a signed voucher for every payment and log it. Count weekly, top up by exactly what was spent, and post the expenses to the books by category. No loans from the box, and no payments above the limit.

FAQ

What is the imprest system for petty cash?

It is a method in which the petty cash fund is always restored to the same fixed amount. At any moment, the cash in the box plus the receipts for what was spent should equal that amount. When the fund runs low, it is topped up by exactly what was spent.

How much should a petty cash fund hold?

Enough to cover two to four weeks of small expenses. Look at what you typically spend on parking, delivery tips, drinking water and minor supplies, and set the float a little above that. A fund that is too large invites misuse. One that is too small needs constant topping up.

What should not be paid from petty cash?

Salaries, supplier invoices, anything above a set limit, and personal expenses. Those should go through the bank so there is a clear record. Petty cash is for small, urgent, everyday costs where a bank transfer would be impractical.