What Is Working Capital? Formula, Examples and Management

What is working capital, and why does a profitable business still struggle to pay salaries on the first of the month? Working capital is the money tied up in running day-to-day operations: stock on the shelf, invoices customers have not yet paid, minus the bills you have not yet paid suppliers. For Indian MSMEs, where 60 to 90 day credit terms are common, working capital is often the single biggest constraint on growth. This explainer covers the formula, the ratios that matter, a worked example, how to estimate your requirement and practical ways to reduce it.

Working Capital Definition and Formula

The textbook definition is:

• Working capital (net) = Current assets minus Current liabilities

Current assets are assets expected to turn into cash within 12 months: cash and bank balances, trade receivables (debtors), inventory (raw material, work in progress, finished goods), advances to suppliers, GST input credit receivable and short-term deposits.

Current liabilities are obligations due within 12 months: trade payables (creditors), short-term borrowings such as cash credit, statutory dues (GST, TDS, PF, ESI), salaries payable, customer advances and the current portion of long-term loans.

Gross vs net working capital

Gross working capital is simply total current assets. Net working capital subtracts current liabilities. When bankers and analysts say "working capital", they usually mean net working capital, or more specifically operating working capital.

Operating working capital

For management decisions, the most useful version strips out cash and short-term borrowings, because those are how you fund working capital, not part of the operating cycle:

• Operating working capital = Receivables + Inventory minus Trade payables

This is the number that grows when you extend more credit to customers, stock up for a season or pay suppliers faster.

Worked Example: A Trading Business in Ahmedabad

Take a hypothetical electrical goods distributor with annual revenue of ₹12 crore and cost of goods sold of ₹10.2 crore. Its balance sheet on 31 March shows:

Current assets	₹ lakh	Current liabilities	₹ lakh
Cash and bank	18	Trade payables	110
Trade receivables	200	Cash credit from bank	150
Inventory	170	GST and TDS payable	12
Advances to suppliers	12	Salaries and expenses payable	8
Total	400	Total	280

• Net working capital = ₹400 lakh minus ₹280 lakh = ₹120 lakh
• Operating working capital = ₹200 + ₹170 minus ₹110 = ₹260 lakh

The business needs ₹2.6 crore locked in receivables and stock (net of supplier credit) to support ₹12 crore of sales. It funds that with ₹1.5 crore of bank cash credit and the rest from the owners' capital and retained profits.

Key Working Capital Ratios

Ratio	Formula	Example value	What it tells you
Current ratio	Current assets / Current liabilities	400 / 280 = 1.43	Short-term solvency; banks often look for 1.33 or more
Quick ratio	(Current assets minus Inventory) / Current liabilities	230 / 280 = 0.82	Ability to pay without selling stock
Debtor days (DSO)	Receivables / Revenue x 365	200 / 1,200 x 365 = 61	Average days to collect
Inventory days (DIO)	Inventory / COGS x 365	170 / 1,020 x 365 = 61	Days of stock held
Creditor days (DPO)	Payables / COGS x 365	110 / 1,020 x 365 = 39	Average days to pay suppliers
Cash conversion cycle	DSO + DIO minus DPO	61 + 61 minus 39 = 83	Days cash is locked in operations

An 83-day cash conversion cycle means every rupee spent on stock comes back as cash about 83 days later. We go deeper on this metric in our guide to the cash conversion cycle formula.

Why the current ratio alone can mislead

A current ratio of 2 looks healthy, but if most current assets are slow-moving stock or debtors overdue by 180 days, the business can still miss payroll. Always read the current ratio alongside the quick ratio and the ageing of receivables and inventory.

How Much Working Capital Does Your Business Need?

A simple way to estimate the requirement is the operating cycle method. Convert each component into days of the relevant flow, then into rupees.

1. Estimate daily sales and daily COGS. For the distributor: ₹12 crore / 365 = about ₹3.29 lakh sales per day; ₹10.2 crore / 365 = about ₹2.79 lakh COGS per day.
2. Receivables needed = daily sales x target DSO. At 60 days: ₹3.29 lakh x 60 = ₹197 lakh.
3. Inventory needed = daily COGS x target DIO. At 55 days: ₹2.79 lakh x 55 = ₹153 lakh.
4. Supplier credit available = daily COGS x DPO. At 40 days: ₹2.79 lakh x 40 = ₹112 lakh.
5. Operating working capital need = 197 + 153 minus 112 = ₹238 lakh.

Growth eats working capital

If the distributor grows revenue 30% next year to ₹15.6 crore with the same cycle, working capital rises roughly in proportion, by about ₹70 lakh. That cash must come from profits, fresh capital or more bank limits. This is why fast-growing MSMEs often feel poorer as they grow, and why a working capital plan should accompany every growth target.

How banks assess working capital limits

Indian banks typically assess cash credit limits using projected current assets and liabilities, and expect the promoter to fund a margin (often 20% to 25% of the working capital gap) from long-term sources. For smaller borrowers, some banks use a simplified turnover method where the limit is a percentage of projected annual turnover. Requirements vary by bank and change over time, so ask your relationship manager for the current method. Our guide to cash credit, overdraft and working capital loans compares the funding options.

Positive vs Negative Working Capital

Positive working capital means current assets exceed current liabilities. That is the normal state for manufacturers and distributors that sell on credit.

Negative working capital means current liabilities exceed current assets. In a struggling business, that is a red flag that suppliers and statutory dues are being stretched. But some healthy models run negative working capital by design: a supermarket or restaurant collects cash immediately, holds stock for a few days and pays suppliers in 30 days. The supplier is effectively funding growth. The test is whether payables are on agreed terms or overdue.

Practical Ways to Reduce Working Capital Needs

Receivables

• Invoice on the day of dispatch, not at month-end. Every day of invoicing delay adds a day to DSO.
• Set credit limits and terms per customer, and stop dispatch when a customer crosses them.
• Offer a small early payment discount only where the maths works (see the example below).
• Use TReDS or invoice discounting for large corporate buyers if you are a registered MSME.

Inventory

• Classify stock using ABC analysis and set reorder levels for A items.
• Identify items with no movement in 90 days and liquidate them, even at a discount.
• Negotiate smaller, more frequent deliveries from key suppliers.

Payables

• Negotiate longer terms in exchange for volume commitments, but pay on agreed dates. Late payment damages supplier trust and pricing.
• If you buy from micro and small enterprises, remember that payment beyond 45 days (or the agreed term if shorter) has legal and tax consequences.

Is an early payment discount worth offering?

A common term is "2/10 net 60": 2% off if paid within 10 days, otherwise full amount in 60 days. The customer gets 2% for paying 50 days early. Annualised, that is roughly 2 / 98 x 365 / 50 = 14.9%. If your cash credit costs 10.5% a year, giving away 14.9% is expensive. A 1% discount for the same 50 days works out to about 7.4% annualised, which is cheaper than bank borrowing. Run this calculation before printing discount terms on invoices.

Common Working Capital Mistakes

• Funding fixed assets from the cash credit account. Buying a machine from the working capital limit starves operations. Use a term loan for capex.
• Ignoring statutory dues. GST, TDS and PF dues are current liabilities with interest and penalty for delay. They are not a source of funding.
• Tracking only the bank balance. Cash in bank today says nothing about the receivables due next week or the stock that will not sell.
• Not linking sales targets to cash. A sales team rewarded only on billing will extend credit freely. Tie incentives to collections.

Monitoring Working Capital Every Month

A simple monthly working capital dashboard should show DSO, DIO, DPO and the cash conversion cycle, the receivables ageing (0 to 30, 31 to 60, 61 to 90, 90 plus days), slow-moving stock and the headroom in your bank limits. In Fininvo ERP, aging reports for receivables and payables and the cash flow statement come from the same ledger as your invoices, and bank reconciliation keeps the cash figure honest. Explore the ERP overview or pricing. This is general information, not financial advice.

Frequently Asked Questions

What is a good working capital ratio?

Many lenders treat a current ratio between 1.2 and 2 as comfortable, and 1.33 is a common benchmark in Indian bank assessments. The right level depends on your industry and cycle; a retailer can run lower, a capital goods maker usually needs higher.

Is working capital the same as cash flow?

No. Working capital is a balance at a point in time. Cash flow is movement over a period. An increase in working capital (more debtors or stock) consumes cash, which is why profitable businesses can have negative operating cash flow.

Can working capital be negative in a healthy business?

Yes, for cash-and-carry models like retail, restaurants and subscription businesses that collect upfront. It is a problem only when it results from overdue payables or unpaid statutory dues.

Where do I find the numbers to calculate working capital?

From your balance sheet: current assets and current liabilities. Revenue and cost of goods sold come from the profit and loss statement. Use averages of opening and closing balances for more accurate day ratios.