Updated for FY 2026-27 (AY 2027-28).

Petty cash without the headache: ATM withdrawals, vouchers and the ₹10,000 cash rule

Most small businesses do not have a petty cash problem, they have a petty cash records problem: ₹20,000 comes out of the ATM on a Tuesday, it gets spent on courier, chai, auto fare and a printer cartridge, and by the time the books are written up in June nobody remembers what happened. The result is a bloated "cash expenses" line, a cash balance in the trial balance that could never physically exist, and a few payments that quietly fail the ₹10,000 cash rule. This article sets out a routine that takes about ten minutes a week and holds up when your CA, or an assessing officer, asks questions.

Stop treating the ATM withdrawal as an expense

The single most common error in small-business books is booking the ATM withdrawal itself as an expense. It is not an expense, it is a movement of your own money from one asset (bank) to another asset (cash in hand). The expense happens later, when the cash is spent.

So when ₹20,000 is withdrawn on 4 May 2026:

Nothing hits the profit and loss account yet. If you book the withdrawal straight to "office expenses", two things break at once: your P&L overstates expenses in a month where the money may not have been spent, and your cash in hand shows nil when there is ₹20,000 physically in the drawer. Both are visible to anyone reading the balance sheet.

The same rule applies to cash taken from the proprietor's own pocket. That is not an expense either — it is an introduction of capital or a loan from the proprietor, credited to the capital account, with petty cash debited.

Run one imprest float, with one custodian

The imprest system is old, dull and works. You fix a float — say ₹15,000 for a small office, ₹30,000 if you have site staff — and hand it to one named person. That person spends from the float and, once a week, submits the vouchers. You reimburse exactly the amount spent, which brings the float back to the fixed figure.

Three rules make it work:

1. One custodian, named in writing. If three people dip into the same box, nobody is accountable for a shortage.
2. A cap per voucher. Anything above, say, ₹2,000 goes through the bank by UPI or NEFT instead. This is the simplest way to keep clear of the ₹10,000 cash rule without thinking about it.
3. The float never changes size. If ₹15,000 is not enough, change the float formally and record it, rather than topping up ad hoc.

The arithmetic check is always the same: cash in box + unreimbursed vouchers = float. If it does not tie, you know before month end, not nine months later.

What a petty cash voucher must actually carry

A voucher is not a formality, it is the only evidence that the cash left the business for a business purpose. Each one needs six fields: serial number, date, amount in figures and words, what it was for, who received it, and the signature of the person approving it. Staple the original bill, bill book slip or printed receipt behind it.

Three practical points:

• Serial numbers run continuously for the year. Gaps invite questions. If a voucher is cancelled, keep the cancelled slip in the file.
• GST bills go in a separate pile. You can only claim input tax credit if the supplier has filed and the invoice appears in your GSTR-2B. A handwritten kirana slip gives you no credit, so book the full amount as expense and do not create an ITC entry you will have to reverse.
• Conveyance claims need the route. "Auto ₹180" means nothing; "Andheri office to client site, Lower Parel, ₹180" means something.

Keep the file physically, for six years from the end of the relevant assessment year as a working rule, and confirm the retention period for your own case with your CA.

The ₹10,000 cash rule, and what it actually costs

Section 40A(3) of the Income-tax Act disallows a business expense where you pay more than ₹10,000 in cash to one person in one day. The test is per person, per day, in aggregate — so paying ₹6,000 in the morning and ₹5,500 in the evening to the same vendor on the same date is a single ₹11,500 payment and the whole ₹11,500 is disallowed, not just the excess. A higher limit applies to payments for plying or hiring goods carriages; check the current figure with your CA before you rely on it. Cash purchases of fixed assets above the same threshold are also not added to the block for depreciation — again, confirm the treatment with your CA.

Note what "disallowed" means: you still part with the cash, and you also pay tax on it as if it were profit.

Worked example. Deepa runs a design studio in Pune as a proprietorship and maintains regular books (she is not on 44ADA). In FY 2026-27 two petty cash payments cross the line: a printer repair of ₹14,500 paid in cash on 12 August 2026, and office deep-cleaning of ₹11,000 paid in cash on 3 January 2027. Everything else is below ₹10,000 per vendor per day.

Disallowance: ₹14,500 + ₹11,000 = ₹25,500.

Her total income before the disallowance is ₹13,20,000, and she is in the default new regime. Adding ₹25,500 takes her to ₹13,45,500, which sits inside the ₹12,00,000–₹16,00,000 slab taxed at 15%. The extra tax is ₹25,500 × 15% = ₹3,825, plus health and education cess at 4% on that tax (₹153), making the total extra tax ₹3,978.

The true cost of those two payments is therefore ₹25,500 of cash out and ₹3,978 of tax on money she never kept. Both bills would have been perfectly deductible if paid by UPI.

One related point on TDS: the mode of payment does not change your deduction duty. If the cleaning contractor crosses ₹30,000 in a single bill or ₹1,00,000 in the year, section 194C applies at 1% or 2% whether you pay in cash or by transfer. Paying from petty cash is the usual reason a TDS default is discovered a year later.

If you are on presumptive taxation under 44AD or 44ADA, 40A(3) does not bite in the same way because your income is deemed — but cash still matters. Under 44AD the presumptive rate is 6% for digital receipts against 8% otherwise, and both 44AD and 44ADA need cash receipts at 5% or less of turnover for the higher turnover limits. Heavy cash use costs you there instead.

Count the box every Friday and book the shortage

Pick a fixed day. Count the physical notes and coins by denomination, write the total on a one-line count sheet, sign it, and compare with the book balance after posting the week's vouchers.

Posting the week's spend from vouchers 214 to 229:

If the box should hold ₹3,240 and actually holds ₹3,000, do not force the entry or "adjust" it against next week. Book it:

A visible ₹240 shortage line, repeated, tells you more about your controls than a cash balance that always ties perfectly because someone made it tie.

Where petty cash leaks, and how to plug it

• Negative cash. If the ledger ever shows cash in hand below zero, a receipt has been missed or an expense is dated before the withdrawal. Fix the date, do not fix the balance.
• Round-sum entries. A string of ₹500 and ₹1,000 "miscellaneous expenses" with no voucher is the first thing a reviewer pulls.
• Personal spends mixed in. Groceries, school fees and fuel for a family car are drawings, not expenses. Debit the capital account.
• Cash sales going straight into the box. They must be recorded as sales with GST, not netted against expenses. There are limits on accepting cash above a threshold under section 269ST — check the current figure and the penalty with your CA.
• No reconciliation of the bank side. Every ATM withdrawal must be matched against the bank statement, otherwise the contra entry gets duplicated. Our guide to bank statement reconciliation covers the matching routine.

Doing this in FlipAccounts

FlipAccounts has a dedicated Petty cash screen where you record the float, post individual vouchers with a date, category and note, and see the running cash-in-hand balance against your physical count. ATM withdrawals come in through bank statement import — PDF, CSV or Excel, with HDFC, IDFC FIRST and Aspire read directly — and you categorise the line as a transfer to petty cash, so it posts as a contra entry rather than an expense; the categorisation rules remember that choice for the next withdrawal. Expenses posted from vouchers flow into the P&L and the statements pack, and the GST and TDS summaries pick up anything with a tax implication. Every edit is kept in the tamper-evident audit log, and a CA can be given read-only auditor access to the same company without touching your entries. Core accounting is free, with no card and no limits.

What to do this week

1. Count the cash in your drawer today, write the figure on a dated sheet, and post an opening petty cash balance that matches it — then fix the float amount in writing and name one custodian.
2. Go through the current financial year's cash payments and flag every one above ₹10,000 to a single vendor on a single day; work out the disallowance at your marginal rate so you know the number before 15 March advance tax.
3. Set a recurring Friday reminder for the voucher posting and cash count, and move any recurring vendor paid in cash — cleaning, courier, repairs — onto UPI from the next bill.

Frequently asked questions

Does the ₹10,000 limit apply per bill or per vendor per day?

Per person, per day, in aggregate. Splitting a ₹15,000 bill into two cash payments of ₹7,500 on the same date to the same vendor does not help — the whole amount is disallowed under section 40A(3). Splitting across two days to dodge the limit is a position your CA will not thank you for defending.

Can I claim GST input credit on a cash purchase?

Only if the supplier has issued a proper tax invoice with your GSTIN and the invoice appears in your GSTR-2B. Mode of payment is not the test; the 2B match is. Most small cash purchases are from unregistered or composition suppliers, so book the gross amount as expense and claim nothing.

Do I need to deduct TDS on something paid from petty cash?

Yes, if the thresholds are crossed. Section 194C applies at 1% or 2% above ₹30,000 for a single payment or ₹1,00,000 in aggregate for the year, and 194J applies at 10% on professional fees above ₹50,000 (2% for technical services). The cash drawer does not create an exemption.

What if my cash count never ties exactly?

Book the difference as a cash shortage or overage in the P&L and move on. Small, occasional differences are normal. A persistent shortage of the same rough amount each week is a control issue — reduce the float, tighten the per-voucher cap, and require a counter-signature above ₹1,000.

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