Business & Finance

How to Calculate Working Capital

Published July 9, 2026

Working capital is what a business has left if it turned all its short-term assets into cash and paid off all its short-term debts. Working Capital = Current Assets - Current Liabilities. With $250,000 of current assets against $150,000 of current liabilities, working capital is $100,000 and the working capital ratio is 1.67.

A business can be profitable on paper and still fail, because profit and cash are not the same thing. The bridge between them is working capital: the money available to keep the lights on, pay staff, and buy inventory while you wait for customers to pay. Understanding and managing it is one of the most important skills for any business owner, freelancer, or finance student.

The Working Capital Formula

Working capital is refreshingly simple to calculate:

Working Capital = Current Assets − Current Liabilities

Both terms refer to the short term, typically the next 12 months:

  • Current assets: cash, accounts receivable (money customers owe you), inventory, and other assets you expect to convert to cash within a year.
  • Current liabilities: accounts payable (money you owe suppliers), short-term debt, wages due, taxes, and other bills due within a year.

If a business has $150,000 in current assets and $90,000 in current liabilities, its working capital is $150,000 − $90,000 = $60,000. That $60,000 is the cushion available to run and grow the business.

Positive vs. Negative Working Capital

  • Positive working capital means current assets exceed current liabilities, the company can comfortably cover its short-term obligations. This is what most healthy businesses aim for.
  • Negative working capital means liabilities exceed assets, a warning sign that the business may struggle to pay upcoming bills, even if it's profitable overall.

Interestingly, a few large, fast-moving businesses (like some retailers) deliberately run on slightly negative working capital because they collect cash from customers before they have to pay suppliers. For most small and mid-sized businesses, though, a healthy positive buffer is the safe and sensible target.

Calculate Your Working Capital

Enter your current assets and current liabilities to instantly find your working capital and working capital ratio.

Use the Working Capital Calculator →

The Working Capital Ratio

The absolute dollar figure is useful, but the working capital ratio (also called the current ratio) puts it in context by comparing assets to liabilities:

Working Capital Ratio = Current Assets ÷ Current Liabilities

Using our example: $150,000 ÷ $90,000 = 1.67. Here's how to read the result:

RatioWhat It Suggests
Below 1.0Liabilities exceed assets, possible liquidity trouble
1.2, 2.0Generally healthy and well-balanced
Above 2.0Very safe, but may signal idle cash or inventory not being put to work

Context matters, ideal ratios vary by industry. A software company and a grocery chain have very different working-capital profiles.

Why Working Capital Matters So Much

Working capital is a direct measure of short-term financial health and liquidity. Its importance comes down to a hard truth: businesses don't fail because they run out of profit, they fail because they run out of cash. Strong working capital lets you:

  • Pay employees and suppliers on time, protecting relationships and reputation.
  • Absorb unexpected costs or a slow sales month without panic.
  • Take advantage of bulk-buying discounts or sudden growth opportunities.
  • Avoid expensive emergency borrowing.

How to Improve Your Working Capital

  • Speed up receivables. Invoice promptly, offer small early-payment discounts, and follow up on late payers.
  • Manage inventory tightly. Excess stock ties up cash; use just-in-time ordering where you can.
  • Negotiate supplier terms. Longer payment windows keep cash in your business longer.
  • Control short-term debt. Refinance costly short-term obligations into manageable terms.
  • Watch your margins. Healthy profit margins feed working capital over time.

Working Capital Questions People Ask

How do you calculate working capital?

Subtract current liabilities from current assets. Current assets are cash, receivables, inventory and anything else convertible to cash within a year. Current liabilities are payables, short-term debt and accrued expenses due within a year.

What is the working capital ratio?

Current Assets divided by Current Liabilities. $250,000 / $150,000 = 1.67, meaning the business holds $1.67 of short-term assets for every $1 of short-term obligations. A ratio between roughly 1.2 and 2.0 is commonly considered healthy.

What does negative working capital mean?

Short-term debts exceed short-term assets, which usually signals a liquidity problem. Some businesses run it deliberately and safely, notably supermarkets that collect cash instantly but pay suppliers on long terms. Context decides whether it is a warning.

How do you calculate the change in working capital?

Subtract the previous period's working capital from the current period's. A rise consumes cash, because money is tied up in inventory or unpaid invoices. A fall releases cash. This is why a profitable business can still run out of money.

Can a profitable business have poor working capital?

Yes, and it is a common failure. Profit is recorded when you invoice, not when you get paid. Growing sales with slow collections and fast supplier payments will drain cash while the profit and loss statement looks strong.

How do I improve working capital?

Collect receivables faster, negotiate longer supplier terms, and reduce inventory that is not turning. Each frees cash without new borrowing. Cutting inventory usually offers the quickest gain for product businesses.

Working Capital and the Cash Conversion Cycle

Working capital tells you the size of your short-term cushion, but the cash conversion cycle tells you how long that cash is actually tied up before it comes back as usable cash again, by measuring the time from paying for inventory to collecting payment from customers. A business can show healthy working capital on paper while still struggling with cash flow if its conversion cycle is long, since a large share of that "working capital" may be sitting in unsold inventory or unpaid customer invoices rather than in the bank. Shortening the cycle, by collecting receivables faster, negotiating longer payment terms with suppliers, or turning over inventory more quickly, improves actual cash availability even without changing the working capital figure itself.

Seasonal Businesses and Working Capital Planning

Businesses with seasonal revenue, such as retailers around the holidays or landscaping companies in summer, need working capital that's sized for their low season, not their average or peak season, since bills and payroll continue year-round even when revenue doesn't. A common mistake is calculating working capital during a strong month and assuming that cushion will hold through the slow season, when in reality current liabilities may stay roughly constant while current assets shrink considerably. Building a rolling 12-month cash flow forecast alongside the working capital calculation helps identify the specific months where a shortfall is most likely, so financing or a credit line can be arranged before the gap actually appears.

Running Your Own Numbers

Working capital is the heartbeat of a business's short-term finances, simple to calculate, but critical to monitor. Track it regularly with the Working Capital Calculator, pair it with your break-even analysis, and you'll always know whether your business has the cash cushion it needs to operate and grow with confidence. For official guidance on this topic, see the U.S. Small Business Administration's business management guidance.

This article is for educational purposes only and is not financial advice. See our Disclaimer.