There is no universal number, and anyone who gives you one without asking about your business is guessing. Working capital needs are driven by how fast money moves through your business, not by your size or your industry averages.
What you can do is calculate your own number in about ten minutes. Here is how.
First, what working capital actually is
Working capital is current assets minus current liabilities. Current assets are things that will become cash within a year: your bank balance, receivables, inventory. Current liabilities are what you owe within a year: payables, accrued expenses, the current portion of any debt.
Working capital = Current assets − Current liabilities
Positive means you can cover your near-term obligations. Negative means you cannot, at least not without new money coming in. That is the headline, but the headline is not the useful part.
The number that actually matters: your cash conversion cycle
The real driver of how much working capital you need is how long your cash is tied up between paying for something and getting paid for it. That gap is the cash conversion cycle, and it is the whole game.
Three pieces:
- Days inventory outstanding. How long stock sits before it sells.
- Days sales outstanding. How long customers take to pay you after you invoice.
- Days payable outstanding. How long you take to pay your suppliers.
Cash conversion cycle = Days inventory + Days receivable − Days payable
A restaurant collects instantly and pays suppliers on terms, so its cycle can be negative: customers fund the business. A manufacturer buys materials, builds for weeks, ships, then waits 60 days to get paid, so its cycle can be 90+ days. Same revenue, wildly different working capital needs. This is why industry benchmarks are close to useless for your specific decision.
Working out your number
- Calculate your cash conversion cycle using the formula above, from your own financials.
- Work out your average daily operating costs. Take annual operating expenses and divide by 365.
- Multiply. Daily costs × cycle days is roughly the capital tied up in one full turn of your business.
- Add a buffer. Most operators land somewhere around three to six months of operating expenses, depending on how volatile and seasonal their revenue is. The more lumpy your income, the bigger the buffer needs to be.
- Add anything lumpy and known: a tax instalment, an annual insurance premium, a seasonal inventory build.
That gives you a defensible number rather than a feeling.
The ratio lenders look at
Lenders will usually look at your current ratio: current assets divided by current liabilities. Conventionally, below 1.0 signals you cannot cover near-term obligations. Comfortably above 1.0 signals you can. Very high can suggest cash sitting idle rather than being deployed, though few small businesses have that problem.
Treat it as a rough signal rather than a target to game. Underwriters look at trend and context more than the raw figure.
Signs you are running too thin
- You time supplier payments around when specific customers pay.
- A single late invoice creates a genuine problem.
- You have turned down work because you could not fund the delivery.
- You are using a credit card to bridge payroll.
- You cannot take a bulk discount because the cash is not there.
That last one is the quiet killer. Being under-capitalized does not just create stress, it makes you permanently less competitive than the operator who can buy well.
Fixing a gap
You have three levers, and financing is only one of them:
- Shorten receivables. Invoice immediately, tighten terms, chase properly, or use invoice financing to turn receivables into cash now.
- Lengthen payables. Negotiate terms with suppliers. Free, and routinely under-used.
- Fund the gap. A line of credit is purpose-built for this, because you draw only what you need and pay interest only on what you draw. A term loan is the wrong shape for a recurring gap.
Where Levr fits
Once you know your number, the question becomes which lender will actually fund it, on terms that make sense. With Levr.ai you create one free profile and get matched against a network of 50+ small business lenders across Canada and the United States, then compare real offers side by side on an all-in cost basis.
Create a free Levr.ai profile and see what is available to your business.
Frequently asked questions
How much working capital should a small business have?
There is no single figure. Calculate it from your own cash conversion cycle and daily operating costs, then add a buffer sized to how volatile your revenue is. Many operators target roughly three to six months of operating expenses.
What is a good working capital ratio?
A current ratio comfortably above 1.0 generally indicates you can cover near-term obligations. Below 1.0 is a warning sign. Context and trend matter more than the exact number.
Can working capital be negative?
Yes, and it is not automatically bad. Businesses that collect from customers before paying suppliers, like many restaurants and subscription businesses, run negative working capital by design. It is dangerous for businesses that do not have that structure.
What is the best financing for working capital?
Usually a line of credit, because the need is recurring and unpredictable and you pay only for what you draw. Invoice financing suits businesses whose cash is stuck in receivables.
The bottom line
Your working capital need is a function of your cash conversion cycle and your daily costs, not your industry. Calculate it, add a buffer for volatility, and fix a gap with the right tool: faster collection, longer payables, or a facility built for recurring needs rather than a lump sum you did not need all at once.
Related reading: Business loan vs. line of credit · Accounts receivable financing · All loan types
This article is for general educational purposes and is not financial, legal, or tax advice. Levr.ai is not a certified accountant or financial advisor. Consult a qualified professional for advice specific to your situation.
