Working Capital Requirement Calculator
Calculate how much working capital your business needs to fund operations, and how much additional funding growth will require.
💵 Working Capital📐 WCR = inventory + receivables − payables💼 Business
Annual revenue
Days inventory outstanding
Days sales outstanding
Days payable outstanding
COGS as % of revenue
Planned revenue growth (%)
Please enter valid values.
Formula & Reference
| Variable | Symbol | Formula | Units |
|---|---|---|---|
| Working Capital Requirement Calculator | — | WCR = inventory + receivables − payables | currency |
Step-by-Step Examples
Example 1
Established Business
Revenue 4,200,000, DIO 52, DSO 41, DPO 34, COGS 62%, 30% growth planned.
- COGS = 2,604,000
- Inventory = (2,604,000/365) × 52 = 370,981
- Receivables = (4,200,000/365) × 41 = 471,781
- Payables = (2,604,000/365) × 34 = 242,565
- WCR = 600,197 — 14.3% of revenue
- At 30% growth: 780,256, requiring 180,059 more
✓ 600,197 — growth needs 180,059 more
Example 2
Negative Working Capital
Revenue 3,000,000, DIO 10, DSO 4, DPO 55, COGS 70%.
- Inventory = 57,534, receivables = 32,877
- Payables = 316,438
- WCR = −226,027 — negative
- Suppliers fund operations; growth releases cash rather than consuming it
✓ −226,027 — growth generates cash
Example 3
Capital Hungry
Revenue 2,000,000, DIO 95, DSO 70, DPO 20, COGS 55%.
- Inventory = 286,301, receivables = 383,562
- Payables = 60,274
- WCR = 609,589 — 30.5% of revenue
- Every 100,000 of growth needs about 30,500 of funding
✓ 609,589 — 30.5% of revenue
Real-World Applications
Growth Funding
Working capital scales with revenue, so fast growth requires cash long before the resulting profit arrives.
Facility Sizing
Lenders size working capital facilities against this calculation, making it central to funding conversations.
Cash Trap Detection
A business can be profitable and still fail if working capital growth outruns available funding.
Improvement Targeting
Each component — inventory, receivables, payables — offers a distinct lever for freeing cash.
Common Mistakes to Avoid
⚠️
Assuming profit funds growth
Profit arrives after the working capital cycle completes. Fast-growing profitable businesses routinely run out of cash for exactly this reason.
⚠️
Ignoring seasonality
Peak-season working capital can far exceed the annual average. Sizing facilities on average requirement leaves a gap at the worst moment.
⚠️
Treating negative working capital as universally good
It is excellent for cash flow but depends on a business model with fast turnover and extended supplier terms. It also reverses painfully if growth stalls.
Frequently Asked Questions
What is working capital requirement? ▾
The cash needed to fund the gap between paying suppliers and collecting from customers — inventory plus receivables minus payables.
Why does growth consume cash? ▾
Because inventory and receivables scale with revenue. You fund more stock and wait for more invoices before the additional profit is collected.
Can working capital requirement be negative? ▾
Yes, when customers pay before suppliers are due. Businesses with fast turnover and long supplier terms often operate this way, and growth then releases cash.
How do I reduce working capital requirement? ▾
Turn inventory faster, collect receivables sooner, and negotiate longer supplier terms. Each day removed from the cycle frees roughly one day of daily cost.
How does this relate to the cash conversion cycle? ▾
They measure the same thing in different units — the cycle in days, the requirement in currency. Multiplying daily cost by cycle days approximates the requirement.