Free working capital calculator
Enter current assets and liabilities — this working capital calculator returns net working capital and the cash conversion cycle funding requirement, updated live, as you type.
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Estimates only. Does not account for taxes, fees, or variable returns. Past performance does not guarantee future results.
Results are estimates. Consult a professional.
How the working capital needs calculator works
Working capital is the cash a business needs to fund the gap between paying its own suppliers and collecting from its customers. This calculator computes two related figures: net working capital (NWC), the balance-sheet measure of short-term financial health, and the working capital requirement (WCR), the cash actually tied up in your operating cycle at any point in time. Businesses with poor WCR management borrow expensively to fund what better-managed competitors finance for free.
The cash conversion cycle (CCC) is the engine of the WCR calculation. Every day in the CCC represents one day's revenue permanently tied up as cash — sitting in a customer invoice, on a warehouse shelf, or in transit to a buyer. Reducing the CCC by one day frees exactly one day's worth of revenue as cash — without touching a bank line. A 60-day CCC on $1 million in annual revenue means $164,384 is constantly locked in the operating cycle and unavailable to pay bills or invest.
Corporate Finance Institute — Net Working Capital (NWC): formula, examples, and how to improve it.Worked example: $1M revenue business, 30-day CCC
A wholesale distributor has $1,000,000 in annual revenue. It collects from customers in an average of 40 days, holds inventory for an average of 20 days, and pays its own suppliers in 30 days. The owner wants to know how much cash is permanently tied up in operations.
Working capital requirement by revenue and cash conversion cycle
The table below shows the cash permanently tied up in operations for three revenue levels ($500k, $1M, $5M) across four cash conversion cycle lengths (15, 30, 45, 60 days). Use it to quickly estimate how much capital you need to fund growth or diagnose a cash-flow squeeze.
| Annual revenue | CCC 15 days | CCC 30 days | CCC 45 days | CCC 60 days |
|---|---|---|---|---|
| $500,000 | $20,548 | $41,096 | $61,644 | $82,192 |
| $1,000,000 | $41,096 | $82,192 | $123,288 | $164,384 |
| $5,000,000 | $205,479 | $410,959 | $616,438 | $821,918 |
WCR = (CCC days × annual revenue) ÷ 365. Source: FASB ASC 210; Corporate Finance Institute NWC guide.
Tips for managing and reducing working capital needs
Working capital is not a fixed cost — it is a management choice. Each component of the cash conversion cycle can be shortened or extended through operational and commercial decisions, freeing cash that would otherwise sit idle in the operating cycle.
- Shorten accounts receivable days. Invoice immediately on delivery, offer 1–2% early-payment discounts for customers who pay within 10 days, and enforce credit terms consistently. Each day removed from AR days frees daily-revenue dollars in cash.
- Optimize inventory days. Excess inventory is cash on a shelf. Implement just-in-time or consignment arrangements with suppliers, use ABC analysis to identify slow-moving SKUs, and set reorder points based on actual lead times rather than safety buffers.
- Extend accounts payable days (responsibly). Negotiate longer payment terms with suppliers — net 45 or net 60 instead of net 30 — without incurring late fees. Every extra day of AP offsets a day of CCC. Do not stretch payables so far that you damage supplier relationships or lose early-payment discounts worth more than the float.
- Monitor WCR at each revenue level. As your business grows, WCR grows proportionally. Model the working capital required for each 25% revenue increase before you commit to growth targets — underfunded growth is the most common cause of profitable businesses running out of cash.
- Use a revolving credit line for seasonal swings. Even with a well-managed CCC, seasonal businesses face WCR spikes. A revolving line of credit sized to your peak-season WCR is the lowest-cost way to bridge these gaps — draw on it at peak, repay it in the off-season.
Accuracy and limitations
This calculator applies the standard NWC and WCR formulas using FASB-defined current asset and liability categories. The WCR calculation uses annual revenue divided by 365 to derive a daily revenue figure, which is a standard approximation. It assumes a steady, uniform revenue stream throughout the year — businesses with strong seasonality will experience WCR peaks significantly higher than the annual-average figure this calculator produces.
The calculator does not model minimum cash balances required for operations, the working capital impact of capital expenditures, off-balance-sheet operating leases, or the effect of currency risk on international receivables. For businesses with highly variable payment terms, multiple product lines with different margin profiles, or significant foreign currency exposure, a detailed cash flow model built with your accountant will give a more accurate WCR picture than this calculator alone.
Working capital terms defined
About this working capital needs calculator
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