Working Capital Cycle: How to Calculate It and Shorten It

The working capital cycle measures the gap between the cash you pay out and the cash you get back. A trading or manufacturing shop buys stock, holds it, sells it on credit and then waits for the party to pay. Meanwhile, suppliers may give you some time before you have to pay them.

During that gap, the business has to fund itself from its own cash or from borrowed money. The longer the gap, the more cash you need to keep operating at the same level of sales. This guide explains how to measure the cycle. It does not cover loans or investment decisions.

Each part is worked out by turning a balance sheet figure into days using a matching profit and loss figure for the same period. Use the same period length, such as a year of 365 days or a quarter of 90 days, in every formula.

Average balances are usually the opening balance plus the closing balance, divided by two. If your business is seasonal, monthly averages give a fairer picture than a simple year-start and year-end figure. Use sales and purchases before GST where possible, and stay consistent: if receivables in the ledger include GST, note that the debtor days figure will read slightly higher.

The formula is: working capital cycle = inventory days + debtor days − creditor days. Inventory days and debtor days are the time your cash is waiting. Creditor days are the time a supplier is effectively waiting on your behalf, so they are subtracted.

1. Choose the period and note the number of days in it.
2. Take opening and closing inventory, trade receivables and trade payables from the books.
3. Take cost of goods sold, credit sales and credit purchases for the same period.
4. Calculate each of the three day figures using the formulas above.
5. Add inventory days and debtor days, then subtract creditor days.
6. Record the result with the period and data sources so you can compare it next time.

The figures below are illustrative only and do not describe any real business. Assume a distributor reviewing a full year of 365 days, with all sales and purchases made on credit.

In this example, cash spent on stock takes about 80 days to come back. Purchases here are taken as equal to cost of goods sold for simplicity. If the business cut debtor days from 50 to 40, the cycle would fall to 70 days. With credit sales of about Rs 30,000 a day, those ten days would release roughly Rs 3,00,000 of cash from receivables, again purely for illustration.

Work on one component at a time and measure the change. The levers below are operational; none of them involve taking on finance.

• ✓Debtor days: invoice the same day goods are delivered or work is accepted, and check that the invoice and party GSTIN are correct so payment is not held up.
• ✓Debtor days: agree written credit terms with each party and run a weekly collection routine with follow-ups by ageing bucket.
• ✓Debtor days: review credit limits for parties who pay late before accepting new orders.
• ✓Debtor days: allocate unidentified receipts quickly so ageing reports stay accurate.
• ✓Inventory days: identify slow-moving and dead stock by item and stop reordering it.
• ✓Inventory days: set reorder levels from actual sales rather than habit, and order smaller quantities more often where suppliers allow.
• ✓Inventory days: count stock regularly so the books and the godown agree.
• ✓Creditor days: pay on the agreed due date rather than early, using a scheduled weekly payment run.
• ✓Creditor days: negotiate credit terms with key suppliers openly, keeping any MSME supplier payment obligations in mind.
• ✓Creditor days: reconcile supplier statements so disputes do not delay or duplicate payments.

The receivables collection routine guide sets out a weekly follow-up process for debtor days. Once you have shortened the cycle, feed the new payment and collection timing into your cash flow forecast so the forecast reflects how cash actually moves.

• Using total sales, including cash sales, to calculate debtor days, which makes collection look faster than it is.
• Mixing periods, such as a quarterly balance with annual sales.
• Relying only on year-end balances in a seasonal business.
• Counting non-trade items such as advances, deposits or director loans in receivables or payables.
• Shortening the cycle by running stock so low that orders are lost.
• Calculating the cycle once and never tracking the trend.

The formula fits businesses that hold stock and sell on credit. A pure service business may have no inventory days, and a cash-and-carry shop may have almost no debtor days. In those cases, focus on the components that apply. A negative cycle, where suppliers are paid after customers pay you, is possible in some trades but depends on terms you should not assume will continue.