Petty Cash and Expense Management: Count It Like a Godown

The Voucher Rule: No Slip, No Money

What makes petty cash trustworthy is a simple rule: every payment needs a voucher, and wherever possible, a bill. A petty cash voucher records:

• Date
• Amount
• Purpose (what it was for)
• Who received the money (signature where possible)
• The attached bill or receipt

For GST-bearing purchases where you want to claim input tax credit, you need the actual tax invoice showing the supplier's GSTIN and tax, and the expense must be eligible. Many small cash buys are from unregistered vendors or carry no proper invoice, so no ITC is available there; don't assume credit on every slip. (For how ITC works, see GST for small business.)

For items that really have no receipt (a small tip, parking with no slip), a signed voucher with a clear note is the minimum acceptable record. The governing principle stays the same: no slip, no money.

Separation of Duties (Yes, Even in a Tiny Team)

This is the control owners skip, and it's the one that prevents fraud: the person who holds the cash should not be the only person who checks it.

In a large company that is obvious; in a five-person business it feels excessive. But that is exactly where small leakage thrives, because "everyone trusts each other." A minimal version:

• One person (an office assistant or a counter clerk) is the custodian who holds and pays out the float.
• A different person (often the owner or a senior) reviews the reconciliation and approves replenishment.

That second pair of eyes, even for five minutes a week, makes inflated or fake vouchers far harder to slip through. If you're a true solo operation you are both roles, but you should still reconcile formally and keep the trail clean.

What Belongs in Petty Cash, and What Doesn't

Petty cash is strictly for small, incidental expenses. The moment a payment is sizeable, it should go through the bank for a clean trail and proper tax and GST treatment. At our mill, small payments for labour, loading and transport go out in cash or by UPI.

Why does this matter beyond tidiness? Larger payments may attract TDS, may carry GST input credit worth claiming, and always benefit from a bank record. Splitting a big payment into cash to "keep it off the books" is exactly the behaviour that creates trouble. Keep big money in the bank, and keep business and personal money separate while you're at it. Our household runs from the same premises as the mill, but it keeps its own petty cash book. (For TDS on the larger payments, our guide to TDS and TCS for business covers what to deduct.)

What I'd Keep Out of the Cash Tin

The table above is the standard advice. My own line would be a little stricter, and it comes from the same place as the godown count.

If I were setting up petty cash for any business, anything that repeats every week, such as wages, would go through a register of its own, not the tin, whether it is paid in cash or through the bank. A payment that recurs is a payment someone can quietly inflate, and a register with names, dates and amounts is the only record that survives a question months later. The same goes for anything that touches tax: payments that may attract TDS, and purchases whose GST you want to claim, need a bank record and a proper invoice.

What stays in the tin should be small, irregular and obvious: a courier, tea for visitors, an auto to the bank, an urgent spare part. Count it every week against the voucher book, the way the godown register is checked against the stock ledger. The discipline is the same at every size: the record and the physical thing have to agree, and someone other than the keeper has to see that they do. The weekly count also feeds the bigger job of reconciling the bank account with the books.

A Month of Petty Cash at an Agri-Input Shop

Take a small agri-input shop in Kashipur, with a counter clerk and a few other staff. Here's a month of its petty cash.

Setup: float fixed at ₹10,000, held by the counter clerk (the custodian). The owner reviews the count and approves replenishment. A voucher book plus a simple expense app.

Week 1 spending (all with vouchers):

Week-1 reconciliation:

• Total spent: ₹2,070
• Cash on hand should be: ₹10,000 − ₹2,070 = ₹7,930
• The custodian counts the cash: ₹7,930 ✔ (cash + vouchers = ₹10,000)
• Replenish ₹2,070 to restore the float to ₹10,000.

Booking it: the ₹2,070 is posted to the right heads: courier ₹350, staff welfare ₹600, conveyance ₹340, stationery ₹780. The stationery tax invoice's ₹119 GST is captured for possible ITC; the auto and parking have no receipts but are covered by signed vouchers.

Month-end: four weekly cycles roll up, and the owner can see exactly what small cash went where, with no vague "₹8,000 miscellaneous." The totals go into the shop's business cash flow so even the small spending is visible, and because the expense heads are clean, the profit margin reflects true costs. Pairing this with broader expense tracking means nothing slips through, cash or bank.

Notice what the system delivered: every rupee traceable, GST captured where valid, discrepancies catchable weekly, and a custodian who can't quietly pad the float because someone reviews it.

Going Digital (Optional but Helpful)

You don't need an app, but for many small businesses a simple expense or petty-cash app beats a paper book: staff photograph bills on the spot, categories are pre-set, and reconciliation is faster. A structured spreadsheet works too. Whatever the tool, the principles don't change: fixed float, a voucher for everything, a separate reviewer, periodic reconciliation. Don't let "we have an app now" become an excuse to drop the bill-keeping; an app with no attached receipts is just a tidier way to lose track.

Categorising Expenses So the Data Is Actually Useful

Recording that you spent ₹2,070 isn't enough; where it went is what makes the data useful. Booking every voucher to a sensible expense head turns petty cash from a black box into a small but real source of insight. This is close to the exact problem that first got me using a spreadsheet seriously in my own business: a pile of small cash payments meant nothing until they were broken into real categories, and the moment they were, a lazy "miscellaneous" bucket turned into a signal you could act on.

Pick a short, consistent set of categories that match how you think about your costs, for example:

• Conveyance / local travel
• Courier & postage
• Staff welfare (tea, snacks, water)
• Printing & stationery
• Minor repairs & maintenance
• Small consumables
• Miscellaneous (kept deliberately tiny)

Why bother? Three payoffs:

1. You spot creeping costs. If "staff welfare" quietly doubles over three months, consistent categories make it visible; a vague "miscellaneous" hides it.
2. Your books and tax position are cleaner. Properly classified expenses sit correctly in your accounts and are easier to substantiate.
3. Budgeting gets real. Once you know your typical monthly conveyance or stationery spend, you can budget for it and even set soft limits.

The cardinal rule: keep "miscellaneous" as small as possible. A large miscellaneous bucket is a sign you're not really tracking: it's the cash-expense version of sweeping things under the rug. If something keeps landing in miscellaneous, it deserves its own category.

Scaling Up: Reimbursements and Multiple Custodians

As a business grows past a handful of people, two wrinkles appear. First, staff reimbursements: an employee pays for something small from their own pocket and claims it back. Treat these with the same rigour as petty cash: a claim form (or app entry), the bill attached, an approver, and payment through a traceable route. Don't let "I'll just give you cash for that" become an untracked habit.

Second, multiple locations or teams may each need a float. The imprest discipline scales cleanly: give each location its own fixed float and its own custodian, reconcile each separately, and have a central reviewer (you or finance) check each one. What you must avoid is floats blurring into one another, or cash moving informally between custodians; that's exactly where reconciliation breaks and leakage hides. One float, one custodian, one reconciliation, one reviewer, repeated cleanly for each location.

How a Petty-Cash Tin Leaks

• No fixed float. Topping up "whenever it runs low," with no imprest discipline, means you can never reconcile cleanly.
• Holding too much cash. A large float invites loss, theft and the temptation to route big payments through cash. Keep it small.
• Missing bills and vouchers. "I'll remember what it was for" never survives to month-end. No slip, no money.
• One person controls everything. A custodian who also reviews their own reconciliation is the classic recipe for unnoticed skimming.
• Routing big payments through cash. Large payments, and those with TDS or GST implications, belong in the bank for the trail and the tax treatment.
• Never reconciling. Cash that is only counted "sometimes" drifts. Reconcile every period without fail.
• Dumping everything into "miscellaneous." Vague categories hide both errors and overspending. Book vouchers to real expense heads.
• Assuming ITC on every bill. ITC needs a valid tax invoice and an eligible expense, and many small cash buys don't qualify.

Float, Custodian, Reviewer: Setting It Up

1. Set a fixed float. Pick an imprest amount that covers about one period's small-cash needs (for example, ₹10,000) and no more.
2. Appoint a custodian. One person holds and pays out the cash; make the role explicit.
3. Separate the review. A different person (often you) reviews the reconciliation and approves replenishment.
4. Enforce the voucher rule. Every payment gets a voucher; attach the bill, and keep tax invoices for any eligible GST input credit.
5. Reconcile every period. Confirm cash on hand + vouchers = float, top back up to the float, and book vouchers to real expense heads.
6. Keep big money in the bank. Route vendor payments, salaries, assets and anything TDS- or GST-relevant through the bank, not cash.
7. Roll it into your numbers. Feed petty-cash totals into your business cash flow and overall expense tracking so the small stuff is visible.
8. Review the float periodically. After a couple of months, check whether the float is too big or too small, and adjust.

Where petty cash spending has GST or tax implications specific to your business, confirm the treatment with your CA rather than assuming a general rule applies.

Petty cash feels too minor to systematise, which is exactly why it leaks. Ten minutes a week on a fixed float, a voucher for every rupee and a second pair of eyes turns "where did all the cash go?" into a tidy, trustworthy line in your books. Small money handled with the same discipline as big money is one of the clearest signs of a business that is actually in control.