The small change that eats your day's cash

Keep a fixed amount of coins and small notes that is never spent, fetch change before you run out, write down what you lend and borrow, and set your own rates so the change is easy. Rounding down two or three rupees on half your sales is a large amount by the end of a year.

The leak nobody writes down

A customer's total comes to 348. You have no coins, he has no coins, and neither of you wants to stand there about it. So you say 345 and he leaves happy.

Nothing about that feels like a loss. It is three rupees, it took a second, and the customer thinks well of you for it.

Then it happens again on the next sale, and forty more times before you close, and it has been happening every day for years. It is never written anywhere, it never shows up as a shortage because the galla was never expected to hold it, and it does not appear in any calculation you make about the shop.

That is what makes it different from every other money problem in a shop. A customer who does not pay is visible. Stock that goes missing is visible eventually. Change is invisible by design, because the amounts are below the level at which anybody bothers to look.

And it is not only rounding. It is coins lent to the shop next door, a toffee handed over instead of two rupees, the ten you never got back from the boy you sent for change. Individually trivial, and together they are one of the largest untracked outflows a small shop has.

Where the change actually goes

Before fixing it, it is worth knowing which part of it is yours to fix, because they are not all the same problem.

The first and biggest is rounding down because you have run out of coins. This is not generosity, it is a stock problem: you are short of an item you need to complete a sale, and you are paying the difference yourself.

The second is rounding down as a habit, on every sale, whether or not you have change. Many shopkeepers do this without ever deciding to, and it is the most expensive one because it happens on every single transaction.

The third is change lent out. Two hundred rupees of coins to the tea shop, fifty to the man with the cart, and none of it is written anywhere. Most of it comes back. Some of it does not, and you never know which.

The fourth is the small purchase paid from the galla and never recorded: a bottle of water, a photocopy, ten rupees to a child running an errand. This is the same problem as shop money and house money getting mixed, just at a smaller size.

The fifth is change taken from the shop for yourself, which is not a problem at all provided it is written down, and a real one when it is not.

What a few rupees a sale looks like in a year

Do this arithmetic once with your own numbers. It is the only part of this page that changes behaviour.

Say you round down on half your sales

Sales in a day90

Sales where you round the total down45

Average rounded off each timeRs 3

Given away in a dayRs 135

Given away in a year, from your profitAbout Rs 42,000

The daily figure is the one that keeps people relaxed about it, and the yearly figure is the honest one. Nobody would agree to hand over that amount deliberately, and yet a great many shops do exactly that.

There is a second thing worth noticing. The money you round away comes out of your margin, not out of your turnover, and margins in a small shop are thin. Three rupees given away on a sale earning you twenty is fifteen per cent of the profit on that sale, which is why it belongs in any honest attempt at working out your shop's real profit.

None of this means you should chase every rupee or become unpleasant about it. It means the giving should be a decision rather than an accident, and at the moment it is almost certainly an accident.

If you want a real figure instead of an estimate, spend three ordinary days measuring it. Keep a scrap of paper beside the box and put a mark on it every time you round a total down, with the amount. Three days is enough to see the pattern, and the number you get will be your own rather than anybody else's example. Most shopkeepers who do this are surprised by how many marks there are rather than by how large they are.

Build a change float, not a change habit

The fix is a small amount of money treated differently from the rest of the day's cash.

A change float, in four steps

1. 1Fix an opening amount and never spend itA set amount in small notes and coins, counted at opening, counted at closing, and treated as part of the shop rather than as loose money.
2. 2Get change before you need it, not when you are stuckOne trip a week to a bank, a fuel station or a busy shop, at a quiet hour, is easier than borrowing from the neighbour twice a day.
3. 3Keep a written note of change borrowed and lentTwo hundred rupees of coins lent to the shop next door is a real amount. Written down it comes back; remembered, it does not.
4. 4Price so the change is easyWhere you set the rate yourself, choose figures that land on notes you actually have. It is the cheapest fix on this whole page.

The float is the whole idea. A fixed amount in coins and small notes, counted at opening and again at closing, held back from the day's takings and never spent on anything. It stops being loose money and starts being equipment, like the weighing scale.

The important part is the second step. Most rounding happens because you are out of coins at the moment of a sale, so the answer is to make sure you are never out of coins, which means fetching change on a quiet morning rather than begging for it in a rush. One trip a week is usually enough once you know roughly what you use.

Writing down what you lend is unglamorous and it works. Two hundred rupees in coins is a real amount of money, and the shop next door will pay it back happily if it is written and awkwardly if it is not, because by then he genuinely does not remember.

And the fourth step is the cheapest of all. Where you set the rate yourself, choose numbers that land where your notes land. A shop that prices things so the totals come out clean has removed most of the problem before it starts.

The rounding question, handled honestly

Rounding is not wrong. Rounding without noticing is what costs you.

Handling the last few rupees

✓Say this

• "Two rupees, I will put it on your next visit."
• "Take a toffee for the two, or I will keep it for you."
• "I am short of coins today, can you give me the eight?"
• "Total is 348. I am not going to round it."

✕Not this

• Rounding down silently on every single sale
• Handing over a toffee and writing nothing
• "Leave it" while quietly resenting it
• Borrowing coins from the next shop with no note

The sentences on the left all have one thing in common: they are said out loud. The customer knows what happened, has a chance to respond, and usually solves it himself by finding the coins in his pocket.

Asking is far more acceptable than shopkeepers think. "I am short of coins today, can you give me the eight?" is a normal request between two people, and most customers will produce it, especially regulars who have watched you round down for them a hundred times.

Carrying the difference to the next visit is the cleanest answer of all where you keep a running account anyway. Two rupees noted against a name is not worth arguing about and it is also not worth losing, and it takes exactly as long to write as it takes to say.

What genuinely damages a shop is asymmetry: rounding up when the total lands your way and rounding down when it lands theirs. Customers notice this faster than almost anything else, and once they have noticed, they check everything.

There is also a version of this that is worth keeping on purpose. Rounding down for a regular, occasionally, said out loud as a small favour, is genuinely good for a shop. What makes it good is that he hears it and knows it was a choice, which is exactly what the silent version can never give you.

When the khata is short by a few rupees

The same problem appears differently in a credit account, and it deserves its own answer.

A customer pays 5,000 against a balance of 5,006 and says he will bring the rest. Six rupees now sits in your book, and it will sit there for months looking like an unpaid balance while both of you know it is nothing.

Decide once how you handle these and apply it every time. Either you write off amounts under a figure you choose and note that you did, or you carry them forward and mention them at the next purchase. Both are fine. Doing neither, and letting a page fill with tiny balances, is what makes a khata look wrong when it is right.

Write the write-off as its own line rather than quietly adjusting the total. "Rounded off 6, balance zero" is a record anybody can follow, while a total that silently changes is the kind of thing that makes a customer look twice, and looking twice is how a settled account becomes an argument about a payment.

And when the shortfall runs the other way, when the customer has overpaid by a few rupees, say so and credit it. It costs you nothing, it takes five seconds, and it buys more goodwill than any amount of rounding down ever will.

Common questions

How much should a change float be?

Enough to get through your busiest two hours without running out, which for most small shops is a few hundred rupees in coins and small notes, weighted towards whatever denomination your prices keep landing on. Count what you actually use over three normal days rather than guessing, then keep that amount and rebuild it each morning from the previous day's takings.

My customers expect me to round down. Will they be annoyed if I stop?

They will not notice if you stop silently and start asking instead, because asking is friendlier than it sounds. Say the real total in an ordinary voice, offer the choice of carrying the difference or finding the coins, and let them decide. Where somebody genuinely objects over two rupees, give it and move on, because the point is to stop doing it forty times a day rather than to win a particular sale.

Is giving a toffee instead of change acceptable?

It is acceptable if the customer agrees to it and if you count the toffee as a sale rather than as nothing. What makes it a problem is when it becomes automatic and unrecorded, because you are then giving away stock at full cost and calling it change. Offer it, do not impose it, and make sure the item leaves your stock count the way any other sale does.

The shop next door borrows my coins constantly. How do I stop it without a fight?

Do not refuse; start writing. A small notebook by the box, the amount and the date, said out loud in a friendly voice, changes the arrangement completely without anybody losing face. Most neighbours settle immediately once it is written, and the ones who do not are exactly the ones you needed the note for.

Should I round to the nearest five or use exact amounts?

Use exact amounts wherever you can, and where your own pricing lets you choose, set rates that produce clean totals in the first place. Rounding to the nearest five is a reasonable shop policy provided it goes both ways and you say so, but a policy that only ever rounds in the customer's favour is a discount you never decided to give.

What about payments that arrive by phone, where change never comes up?

Those solve the change problem and create a different one, because money that lands in a personal account is easy to lose track of and easy to spend without noticing. Treat every such payment as shop money the moment it arrives, record it the same day, and keep it separate from your own, which is the whole subject of sales landing in your mobile account.