Working Capital Calculator

Working Capital: What It Is and Why It Matters for Australian SMBs

Working capital is the difference between current assets (cash, trade receivables, and inventory) and current liabilities (accounts payable, accrued expenses, and any debt due within 12 months). It measures how much liquid buffer your business has to meet short-term obligations without needing to raise additional financing. A positive working capital position means you can pay your bills as they fall due; a negative working capital position means you are reliant on credit or asset sales to cover day-to-day operations.

The current ratio (current assets ÷ current liabilities) expresses working capital as a ratio. A ratio above 1.5 is generally considered healthy for most Australian SMBs — it means you have AU$1.50 of liquid assets for every AU$1.00 of short-term obligations. Banks and lenders typically look for a minimum of 1.0 before extending working capital finance. The quick ratio (which excludes inventory) provides a more conservative view, stripping out stock that may take time to convert to cash — particularly relevant for manufacturing, wholesale, or retail businesses holding significant inventory. A quick ratio above 1.0 indicates the business can meet all current liabilities with its most liquid assets alone.

For Australian industrial and trade businesses, working capital is highly sensitive to payment timing on both sides. Slow collections from customers inflate your receivables balance without adding cash. Paying supplier invoices earlier than necessary reduces your cash balance unnecessarily. Managing the gap between when you pay suppliers and when you collect from customers — the cash conversion cycle — is one of the most important levers for improving working capital without raising additional debt.

How to use this calculator

1. Enter your current assets: cash and bank balances, trade receivables, and inventory.
2. Enter your current liabilities: accounts payable, short-term loans, and accrued expenses.
3. Review your working capital position, current ratio, and quick ratio.
4. Use the results to assess whether your liquidity position needs attention before approaching a lender or planning a major purchase.

What current ratio do lenders look for in Australia?

Most Australian commercial lenders expect a current ratio of at least 1.0 before extending unsecured working capital finance, and prefer 1.2–1.5 or higher. Below 1.0, the business is technically in a working capital deficit — it cannot cover all short-term liabilities with current assets alone. Some businesses operate sustainably with low ratios (supermarkets, for example, collect cash immediately but pay suppliers on 30–60 day terms), but for most SMBs this signals risk.

How does accounts payable affect working capital?

Accounts payable is a current liability — the higher your unpaid supplier invoices, the lower your working capital position. Paying invoices before they are due consumes cash and reduces your working capital unnecessarily. Conversely, if you pay too slowly you risk supplier credit being withdrawn or late payment penalties. The optimal approach is paying invoices on their due date — no earlier, no later — which preserves cash while maintaining supplier relationships.

Is negative working capital always a problem?

Not always — but it is often a warning sign. Some businesses operate with structural negative working capital because they collect cash before delivering goods or services (e.g. subscription businesses, retailers taking deposits). For most trade and industrial businesses, negative working capital means you cannot meet short-term obligations from current assets alone and need to arrange additional financing or improve collections urgently.