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Accounting & Cash Flow

Expense Tracking That Doesn't Become a Second Job

KarthikFounder & Full-Stack Engineer4 min read

Ask a shop owner what they sold last month and they will answer within a few percent. Ask what they spent running the shop and the answer comes slower and vaguer. Rent they know. Electricity, tea for customers, courier charges, the auto-rickshaw for a delivery, the repair of the fridge: those vanish.

Small expenses are where profit quietly leaks, and they are also where tracking systems collapse, because nobody wants to log a ₹60 tea bill. So the goal is not perfect tracking. It is a system light enough to survive.

Decide what you will actually track

Start by splitting expenses into two groups, because they need different treatment.

  • Stock purchases. Goods you buy to sell. These belong in purchase bills, with your suppliers.
  • Running costs. Everything else: rent, salaries, power, transport, repairs, packing material, phone and internet, marketing.

Stock purchases are already captured if you enter purchase bills, in tools like Billy. For running costs, check what your own software supports. Billy as it stands is built around invoicing, purchases, stock and balances, and we would not tell you it replaces a full expense ledger. If you need a separate record, a simple sheet works while you decide.

Keep the categories few

The classic mistake is a spreadsheet with forty categories. After a week nobody remembers whether the courier bill was 'logistics', 'delivery' or 'postage'. Use eight or ten categories and stick to them.

  • Rent and utilities
  • Salaries and wages
  • Transport and delivery
  • Repairs and maintenance
  • Packing and supplies
  • Marketing
  • Phone, internet and software
  • Bank charges and interest
  • Miscellaneous (with a limit; see below)
Rule of thumb

If 'Miscellaneous' is growing into one of your biggest categories, your categories are wrong. Review its contents monthly and create a proper category for anything that repeats.

A routine with three touchpoints

  1. 1Daily, thirty seconds: put receipts and chits into one envelope or box. Do not record yet. Just collect them.
  2. 2Weekly, ten minutes: enter the week's chits into your sheet or system with date, amount, category and who paid. Throw nothing away until the month is closed.
  3. 3Monthly, twenty minutes: total each category, compare with last month, and circle anything that jumped.

The envelope is the trick. The step that kills most trackers is recording on the spot, which never happens. Collecting is easy. Recording in a batch is manageable.

Cash expenses, UPI and cards

Pay as much as you can through the bank or UPI. Those payments leave a trail that you can compare with your statement. Cash expenses leave only what you write down. If staff pay small expenses from the till, give them a petty cash float, a fixed amount, and ask them to bring chits to top it up. The float tells you the total spent without anyone tracking each rupee in real time.

Our post on the daily cash register closing routine shows how to keep till cash and petty cash from tangling.

What to do with the numbers

Tracking only matters if you look at it. Once a month, ask three questions: which category grew fastest, is that expected, and is any cost something we can bargain down or stop? A subscription nobody uses, electricity costs after a new fridge, or a courier you overpay: these appear within minutes once the data is in one place.

Compare expenses against your sales, not just against last month. A cost that rises with sales, like packing, is natural. One that rises while sales stay flat deserves a conversation. And remember that profit on paper is not the same as cash, as we explain in profit vs cash.

An example month

A small bakery owner sets a ₹3,000 petty cash float. Staff buy gas refills, packing tape and a courier slip from it and drop the chits into an envelope. On Saturday she tops the float back up and notes the amount spent by category. At month end she sees that packing and courier together cost more than rent would suggest. She renegotiates the courier rate. The figures here are illustrative, but the effect of looking once a month is genuine.

A tidy expense sheet is a gift to your accountant. Share it monthly or at least when closing the books. Whether a given expense is claimable for tax is a question for them, not for us, and receipts matter. Our guide to preparing your books for your accountant lists what to keep.

If you would like a proper expense module wired into your billing and reports, that is the kind of custom work we do. Describe what you need through our services page and we will tell you honestly what it would take.

expensesbookkeepingcost controlsmall business

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