Petty Cash
/ˈpɛti kæʃ/
Small amount of cash held by an Irish company for minor incidental expenses, managed via a formal record-keeping system for tax compliance.
Small amount of cash held by an Irish company for minor incidental expenses, managed via a formal record-keeping system for tax compliance.
Petty cash refers to a small amount of discretionary funds kept on hand by a business to cover minor, incidental expenses where issuing a formal invoice or processing a bank transfer would be impractical. In an Irish startup environment, these funds are typically used for office supplies, staff refreshments, or small postage costs.
While most modern business transactions are conducted through digital banking and corporate cards, maintaining a physical or digital petty cash reserve remains relevant for low-value payments. The primary goal is convenience. Instead of requiring a director to approve a €5 purchase for milk or stamps, a designated custodian can make the payment and record it later in the cash book.
Having a formal system in place ensures that these small leaks in capital do not go unrecorded. Even though the individual amounts are small, they can accumulate over an accounting period, affecting the overall accuracy of the financial statements.
The most common method for managing petty cash is the imprest system. Under this model, the fund starts with a fixed balance, known as the float. As expenses are paid out, the custodian collects receipts. Periodically, the total value of the receipts plus the remaining cash must equal the original float. This provides an immediate audit trail and simplifies the process of replenishing the fund back to its set level.
Effective management requires a clear policy on what constitutes a valid petty cash expense. For example, a company might limit any single transaction to under €20. Anything higher might require a formal purchase order or be processed through the standard accounts payable workflow.
In terms of bookkeeping, petty cash is treated as a current asset. It typically appears as a separate line item on the balance sheet under cash and cash equivalents. Each time the float is replenished, a journal entry is made to debit the relevant expense accounts and credit the main bank account.
Modern startups often replace the traditional "tin in the drawer" with digital solutions like prepaid spending cards. These tools act as a virtual petty cash fund, allowing the founder to track spending in real time while maintaining the same level of control as a physical cash system. This digital shift improves transparency and makes the eventual bank reconciliation much faster.
Because it involves liquid cash or low-friction digital spending, the fund is inherently susceptible to misappropriation or simple human error. Implementing strict controls is essential. This includes requiring a receipt for every single cent spent and conducting surprise reconciliations by someone other than the main custodian. This separation of duties is a fundamental principle of internal financial governance.
For Irish businesses, Revenue expects that all business expenses, no matter how small, are supported by evidence. Failing to keep receipts for petty cash spending could lead to those expenses being disallowed during a tax audit, effectively increasing the company's taxable profit.
