Working capital explained, in plain words
Why a business that is selling well can still be short of money, how to measure the gap in days using three numbers from your own records, and the levers that shorten it.
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Working capital sounds like an accountant's term. For an owner it is a simple, uncomfortable fact: you pay for stock, materials and wages before the customer pays you, and the money sitting in that gap cannot be used for anything else.
This guide explains the idea without jargon and shows how to measure it using three numbers from your own invoices and bills. The rupee figures in the example are made up and round, to show the arithmetic. They are not benchmarks for any trade.
What you should come away with
- Working capital is the money tied up between paying for the work and being paid for it
- It usually grows when sales grow, so growth can make cash tighter before it makes it easier
- Three counts in days are enough to measure it: stock, collection and payment
- The number of days is more useful than the rupee figure, because days can be compared month to month
- Change one lever at a time and measure the result
- Short-term gaps and long-term needs should be funded differently; ask your CA or banker before borrowing
Start with a small picture. Suppose a business buys goods on the first of the month, pays its wages on the first, sells the goods in the middle of the month, and is paid by the customer on the first of the following month. For about a month, the owner has spent money and holds none of it. That money is working capital: cash that has gone into stock, into unpaid customer bills and into running costs, and that has not yet come back.
Accountants define it as current assets less current liabilities. This article uses the owner's meaning, the money tied up in running the business day to day, because it is the one you can act on.
Why does it matter more as a business grows? Because the gap widens when sales rise. If you sell twice as much, you buy twice as much material, carry twice as much stock and wait for twice as many payments, all before any extra profit has arrived. This is why a business with rising sales and a healthy profit can still find the account empty on the day wages are due.
You can measure the gap with three counts, each expressed in days.
The first is days of stock: how long goods or materials sit before they are sold. Divide the value of stock you hold by the cost of what you sold over a period, then multiply by the number of days in that period. A service business can do the same with work that is done but not yet billed.
The second is days to collect: how long customers take to pay. Divide the unpaid customer bills by your credit sales for the period and multiply by the days. Compare the answer with the terms you agreed. The gap between the two is often a surprise, and it is usually caused by a few customers rather than all of them.
The third is days to pay: how long you take to pay your suppliers. Divide what you owe suppliers by your purchases for the period and multiply by the days. Suppliers who allow you time are in effect lending you money, so this number shrinks the gap.
Now put them together. Days of stock plus days to collect, less days to pay, is roughly the number of days your money is away from you.
Here is a made-up example, with round numbers for the arithmetic only. A trader holds goods that take about 30 days to sell, customers take about 45 days to pay, and the trader pays suppliers in about 15 days. The money is away for 30 plus 45 minus 15, which is 60 days. If the trader sells ₹3,00,000 a month, then roughly two months of that, about ₹6,00,000, is tied up at any time. If sales rise by a fifth, the amount tied up rises by about a fifth as well. Your own numbers will differ, and the point is to find them.
There are only three ways to shorten the gap, and each has a cost.
You can hold less stock, or hold the right stock. Slow-moving items tie up money for months. Before buying in bulk for a discount, work out what it really saves against the cost of money sitting on the shelf.
You can collect sooner. Agree payment terms in writing before the order. Invoice on the day the work is accepted. Remind customers before the due date, not after. Ask for part-payment in advance on large orders. If you supply a larger buyer, micro and small suppliers have some protection on payment periods under the MSMED Act; check the current rules on the Ministry of MSME website.
You can pay later, within what your suppliers will accept. This can be reasonable, but stretching suppliers too far costs goodwill and sometimes price, and wages and statutory dues should never be the ones that wait. Where a supplier offers a discount for early payment, compare the saving with what the money would otherwise cost you.
Pick one lever and one number. For example, bring days to collect down by five over the next month by invoicing on the day of delivery and reminding the three slowest customers a week before the due date. Changing five things at once teaches you nothing about what worked.
When the gap cannot be closed from inside the business, it may need to be funded. As a general principle, short-term gaps are better matched with short-term finance that is repaid as the money comes back, and long-term needs such as machinery with longer-term money. Using short-term money for a long-term need forces a business to keep rolling it over. What suits your business depends on your accounts, your trade and the lender's terms, so speak to your CA or banker, and check current terms with the lender, before borrowing.
A last point. Do the calculation on actual records, even rough ones, and write down which figures are guesses. Repeat it every month. An owner who can see whether the gap is becoming fifty days or seventy is deciding with information, not worry.
This guide is general education. It is not advice on any particular business, and it does not recommend any lender or product.