What is Working Capital?

Running a business means keeping a lot of plates spinning, and working capital is what keeps them in the air. It’s your financial cushion, and the difference between trading confidently and scrambling to cover bills.

But if you’re wondering what working capital actually is, we’ve got you. Here’s everything you need to know about how to stay ahead to help your business go further.

Working capital definition

So, what is working capital? It’s pretty simple: current assets minus current liabilities. What you've got coming in, minus what you owe in the short term.

It's the money that keeps your business moving, paying for stock, wages, rent and supplier bills. Get it right and day-to-day costs take care of themselves. Get it wrong and even a profitable business can find things tricky, meaning you might want to explore your options.

How do working capital loans work?

Working capital loans bridge the gap between money going out and money coming in. Think late invoices, a seasonal quiet spell or a big stock order before a busy period. Rather than putting your plans on pause, a working capital loan keeps you moving.

You repay it based on the terms of your agreement and in line with the needs of your business. Find out more on choosing the right finance option for your business on our resources hub.

Calculating the working capital formula

The working capital formula is straightforward:

Working capital = Current assets − Current liabilities

For example, if your business has £80,000 in current assets (cash, stock and outstanding invoices) and £50,000 in current liabilities (supplier bills, short-term debt), your working capital is £30,000.

You can also look at the working capital ratio (also known as the current ratio), which divides current assets by current liabilities:

Working capital ratio = Current assets ÷ Current liabilities

Using the same numbers, that gives a ratio of 1.6. A ratio above 1 means you have more short-term assets than liabilities, generally a good sign. Below 1 could mean things are tighter than they need to be, though it does vary by industry.

The importance of working capital

Keeping a close eye on your working capital can help you to spot cash flow problems before they spiral. It helps to shape the big calls too, from hiring decisions and stock purchases to supplier negotiations and when to invest.

Most business owners see it as one of the most helpful metrics to track alongside profit and revenue. And for good reason. A business can look healthy on paper and still struggle if cash isn't moving in the right way at the right time.

Positive working capital means you've got enough short-term assets to cover what you owe, with some breathing room to spare. Negative working capital is a signal that things are tighter than they need to be.

For more on how finance can support your growth plans, take a look at the benefits of business loans for SMEs. 

Types of working capital

Working capital isn't one-size-fits-all. Different businesses have different needs, and there are types of working capital finance to reflect that:

• Business loans - a lump sum borrowed over a fixed period, repaid in monthly instalments. Good for planned investments or covering a known cash flow gap. At Funding Circle, our business loans offer terms from 6 months to 6 years, with rates from 6.9% per year

• Shorter term loans - ideal if you need fast access to funds. Our 6 or 12-month loans carry no upfront fee when you apply directly, and only pay interest for the time you borrow.

• Revolving credit- a rechargeable line of credit you can dip into as and when you need it. FlexiPay from Funding Circle works this way, letting you pay any business cost and spread repayment over 1–12 months. It’s just one simple, flat fee from 1.99% per transaction. Zero compound interest.

• Government-backed loans - The Growth Guarantee Scheme (GGS) offers Government-backed finance from £25,000 to £250,000, with terms from 24 to 72 months. Please note the scheme's guarantee is to the lender, and the business remains 100% liable for the debt.

• Asset finance - if you need to acquire equipment, vehicles or machinery, asset finance can free up working capital by spreading the cost. We do all the legwork, collecting the best deals from our trusted panel of lenders.

If you're exploring your finance options, you can find out more about how to get a business loan with Funding Circle, or check your eligibility online in a matter of minutes.

FAQs

What is net working capital?

Net working capital is the same core calculation, current assets minus current liabilities, but the term often signals a more specific analysis. Some definitions strip out cash and short-term debt, focusing purely on operating items like trade receivables, inventory and payables. Worth checking which version applies in any given context.

How to improve your working capital?

Start with the basics: invoice promptly and chase late payments. They're one of the biggest drains on small business cash flow. Keep stock levels lean, negotiate better terms with suppliers and consider finance options that give you more breathing room day to day.

22/05/26: While we want to help as much as we can, the information found here is provided solely for informational purposes and should not be considered financial or legal advice. To the extent permitted by law, Funding Circle does not accept any liability for any loss or damage which may arise directly or indirectly from the use of, or reliance on, the information contained here. If you have any questions, please speak to your professional adviser or seek independent legal advice.