Working Capital Calculator
By Jan Suski. I go deep on every review, checking every number against its source and digging up details other coverage misses, a habit from six years of SEO and link building for tech companies. Bylines at Surfer, Brand24, and Senuto. How the scoring works.
How it works
This calculator subtracts current liabilities from current assets to produce working capital, then divides the same two figures to produce the working capital ratio, the current ratio. Add an inventory figure for a third number, the quick ratio. Every figure recalculates as you type, including a bar comparing assets against liabilities and a table projecting the ratio if liabilities grow first.
Who it's for
Built for small business owners and bookkeepers checking short-term liquidity before a loan application, and for analysts sizing up a target company's balance sheet before a deal closes. The Business Development Bank of Canada's 1.2-to-2.0 healthy range gives both groups a shared benchmark to check their own numbers against.
Reading the results
BDC treats 1.2 to 1 as the floor for an acceptable ratio and flags anything under 1.0 as a sign a company can't meet short-term obligations without new financing. BDC puts the ceiling at 2.0: past that, current assets are usually inventory sitting on a shelf that hasn't turned into cash yet. The quick ratio strips inventory out entirely, since it moves too slowly to count as real short-term cover.
When to use it
- Checking short-term liquidity before applying for a business loan or line of credit.
- Closing the books each quarter to catch a ratio sliding toward the 1.2 floor early.
- Checking a target company's balance sheet health before an acquisition closes.
- Projecting the effect of a big new liability on next quarter's cash cushion.
Working capital
$0
Current ratio
0
working capital ratio
Quick ratio
0
acid-test ratio
If current liabilities rise before assets catch up
| Scenario | Liabilities +% | New working capital | New current ratio |
|---|---|---|---|
| Conservative | % | $0 | 0 |
| Moderate | % | $0 | 0 |
| Aggressive | % | $0 | 0 |
Current ratio (working capital ratio) = Current assets ÷ Current liabilities
Quick ratio (acid-test ratio) = (Current assets − Inventory) ÷ Current liabilities
BDC treats 1.2 as the floor for an acceptable current ratio and 2.0 as the ceiling before excess cash sits idle in inventory.
Cross-check three things before acting on this number: if the receivables inside current assets are still collectible, per your aging report; the sell-through rate on the inventory counted above; and an industry-specific current-ratio benchmark, since the 1.2-to-2.0 range above is a general rule of thumb.
How this is calculatedthree formulas, each sourced
Working capital equals current assets minus current liabilities, the formula Wall Street Prep uses in its working-capital reference guide. The working capital ratio, also called the current ratio, divides the same current assets by current liabilities.
The Business Development Bank of Canada treats 1.2 to 1 as the floor for an acceptable ratio and flags anything under 1.0 as a sign a company can't meet short-term obligations without new financing. BDC puts the ceiling at 2.0: past that, current assets are usually inventory sitting on a shelf that hasn't turned into cash yet.
Add an inventory figure and the calculator produces a third number, the quick ratio: current assets minus inventory, divided by current liabilities. Corporate Finance Institute recommends this version when inventory moves too slowly to count as real short-term cover, and names no single healthy number for it, since the right level depends on the industry.
Worked example$180,000 in assets, $95,000 in liabilities
Enter $180,000 in current assets, $40,000 of that sitting in inventory, and $95,000 in current liabilities, the calculator's own defaults. Working capital comes out to $85,000. The current ratio lands at 1.89, comfortably inside BDC's 1.2-to-2.0 range, and the quick ratio comes out to 1.47 once the $40,000 of inventory is set aside.
Push current liabilities up 50% to $142,500, the aggressive row in the scenario table above, and working capital drops to $37,500 while the current ratio slides to 1.26, still above the 1.2 floor but close enough that one missed receivable would tip it under.
What this does and doesn't tell youa snapshot, not a trend line
The three numbers above describe a single moment on the balance sheet. A business collecting receivables on 30-day terms and paying suppliers on 60 can show the same working capital figure as one running the opposite terms, and only the cash conversion cycle separates a comfortable gap from one closing fast.
A stitch in time saves nine with this kind of number: a quarterly glance at the trend line catches a slide from 1.6 to 1.3 while there's still room to fix it, months before the ratio crosses under 1.0.
Inventory sitting in the current-assets figure is the other blind spot. Unsold stock counts toward working capital and the current ratio even when it's obsolete or slow-moving, which is exactly why the quick ratio strips inventory out. If your business carries seasonal inventory, run the numbers again after the season turns, since a single snapshot at the peak will overstate the cushion.
The 1.2-to-2.0 range above is a flat rule of thumb; a financial data provider can pull the actual median current ratio for your sector, which runs higher for capital-light software businesses and lower for capital-heavy manufacturers and retailers.
How do I calculate working capital?subtract liabilities from assets
Subtract current liabilities from current assets. Both figures come straight off the balance sheet: current assets are everything a business expects to convert to cash within a year (cash, receivables, inventory), and current liabilities are everything due within that same year (accounts payable, short-term debt, accrued expenses).
What is a good working capital ratio for a company?BDC's 1.2 to 2.0 range
BDC puts the acceptable range at 1.2 to 2.0. Below 1.2, a business can struggle to make ends meet on what's due within the year. Above 2.0, cash is usually parked in inventory or receivables, sitting idle when it could fund the next order or hire.
Is higher working capital always better?no, past a point
No, past a point. BDC's own research flags a current ratio above 2.0 as a sign of inefficiency: assets sit in inventory or with slow-paying customers, unable to fund the business. A company sitting on a 3.5 ratio is often leaving cash on the table when it could put that cash to work.
Can working capital be negative?yes, when liabilities exceed assets
Yes. It happens when current liabilities exceed current assets, meaning bills due within the year outweigh what's on hand or coming in to cover them. Retailers with fast inventory turnover sometimes run negative working capital on purpose, collecting cash from customers before supplier invoices come due; a services firm carrying the same negative number usually has its back against the wall.
How is the quick ratio different from the current ratio?inventory counted in, then stripped out
The current ratio counts every current asset, inventory included. The quick ratio pulls inventory back out, since Corporate Finance Institute treats unsold stock as too slow to convert into cash during a short squeeze. A retailer sitting on a healthy current ratio can still be skating on thin ice on the quick ratio if most of that cushion sits in stock on shelves, with little cash or receivables behind it.
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