What is free cash flow?

Free cash flow (FCF) is the cash a business generates from its day-to-day operations after subtracting the money spent on capital expenditures such as equipment, vehicles, or property. It's one of the clearest measures of your business's financial health because it shows how much actual cash you have available to use as you see fit.

Unlike profit, which can include non-cash items such as depreciation, free cash flow focuses purely on the money moving in and out of your business. Business owners, investors, and lenders all use FCF to assess whether a company can fund its own growth, repay debts, or build a safety net for the future.

For small business owners, understanding free cash flow is especially valuable. It gives you a realistic picture of the cash you can actually spend, rather than the theoretical profit sitting on your income statement. For a deeper look at the distinction, read the guide on cash flow vs profit.

Why free cash flow matters for your business

Knowing your free cash flow helps you make better decisions about where to direct your resources. Here are some of the reasons FCF matters for small businesses:

It shows whether your business generates enough cash to fund growth without relying on loans or external investment.
It helps you plan for large purchases or investments by revealing how much spare cash you'll have after covering day-to-day costs.
It gives lenders and investors a clear signal of your business's financial strength and ability to meet obligations.
It highlights potential cash shortfalls early, so you can adjust spending or chase outstanding invoices before problems develop.
It supports better budgeting by separating the cash you need to keep the business running from the cash available for strategic choices.

In short, free cash flow bridges the gap between what your accounts say you've earned and what you can actually do with the cash in your business.

Free cash flow formula

The most commonly used formula for free cash flow is straightforward. It takes your operating cash flow and subtracts the capital expenditures your business has made during the same period.

Free cash flow = operating cash flow - capital expenditures

Operating cash flow (sometimes called cash flow from operations) is the cash your business brings in from its core activities, such as selling products or delivering services. You'll find this figure on your cash flow statement. It already accounts for day-to-day expenses such as wages, rent, and supplier payments.

Capital expenditures (often shortened to CapEx) are the amounts you spend on long-term assets. These include equipment, machinery, vehicles, IT systems, or property improvements. CapEx is different from routine operating costs because these purchases are designed to benefit your business over several years.

How to calculate free cash flow

Calculating free cash flow takes just a few steps once you have your financial statements to hand. Here's how to work it out, with a practical example using a UK small retail business.

Find your operating cash flow on your cash flow statement. In this example, the business has operating cash flow of £80,000 for the year.
Identify your capital expenditures for the same period. This business spent £25,000 on new shop fittings and a point-of-sale system.
Subtract capital expenditures from operating cash flow: £80,000 - £25,000 = £55,000.

The business has £55,000 in free cash flow. That's the cash available after covering all operating costs and investing in long-term assets. The owner could use it to pay down a business loan, set aside a reserve for quieter months, or invest in marketing to attract new customers.

If you use accounting software that provides real-time financial data, you can pull these figures at any time rather than waiting for year-end. This makes it easier to track FCF throughout the year and spot trends as they develop. For a full walkthrough, see the guide on how to calculate cash flow.

Types of free cash flow

There are several variations of free cash flow, each offering a slightly different perspective on your business's finances. The 2 most common types are levered and unlevered free cash flow.

Unlevered free cash flow (also called free cash flow to the firm, or FCFF) is the cash available before any debt repayments. It shows the total cash your business generates regardless of how it's financed. Investors and analysts often use FCFF when comparing businesses with different levels of borrowing.

Levered free cash flow (also called free cash flow to equity, or FCFE) is the cash remaining after you've made all debt payments, including interest and principal. This is the cash that's genuinely available to the business owner or shareholders. For most small businesses, levered FCF is the more practical figure because it reflects the cash you can actually access.

The simple formula covered earlier in this article calculates unlevered free cash flow. To find your levered FCF, subtract your debt repayments from that figure.

How free cash flow differs from other cash metrics

Free cash flow is just one of several metrics that measure your business's financial position. Understanding the differences helps you choose the right measure for the right situation.

Cash flow refers broadly to all money moving into and out of your business. Your cash flow statement breaks this into 3 categories: operating, investing, and financing activities. Free cash flow, by contrast, focuses specifically on operating cash flow minus capital expenditure.

Net cash flow is the total change in your cash position over a period, covering all 3 categories on your cash flow statement. It tells you whether your overall cash balance went up or down. FCF is narrower because it excludes financing activities such as loans or share issues.

Working capital measures your ability to cover short-term obligations by comparing current assets to current liabilities. It's a snapshot of liquidity at a single point in time, while FCF shows the cash generated over a period.

EBITDA (earnings before interest, taxes, depreciation, and amortisation) is a profitability measure, not a cash flow measure. It strips out certain costs to show operating performance but doesn't account for actual cash movements such as tax payments or changes in accounts receivable. FCF is typically a more reliable indicator of the cash genuinely available to your business.

How to interpret free cash flow

Knowing your FCF number is only useful if you understand what it's telling you about your business. Here's how to read the signals.

Positive free cash flow means your business is generating more cash from operations than it's spending on long-term assets. This is generally a healthy sign. It means you have cash available to reinvest, reduce debt, or build reserves. Consistently positive FCF over several periods is a strong indicator of financial stability.

Negative free cash flow means your capital expenditure exceeded your operating cash flow during that period. This isn't automatically a problem. If you've invested heavily in new equipment or expanded your premises, negative FCF can reflect a deliberate growth strategy rather than a financial concern.

The most valuable insight comes from tracking your FCF over time. A single quarter's figure can be misleading, especially if you made a large one-off purchase. Look at the trend across several months or quarters.

Steadily rising FCF suggests your business is becoming more efficient at turning activity into available cash. A declining trend, on the other hand, may signal rising costs, slowing sales, or the need to review your spending.

There's no universal benchmark for what counts as "good" free cash flow. It depends on your industry, business size, and growth stage. The key question is whether your FCF consistently supports the decisions you need to make.

Limitations of free cash flow

While free cash flow is a useful metric, it has some limitations worth keeping in mind.

Capital expenditure can vary significantly from one period to the next. A year with a major equipment purchase will show much lower FCF than a year without one, even if your underlying business performance is steady.
FCF doesn't distinguish between essential and optional spending. Cutting CapEx can boost your free cash flow in the short term, but delaying necessary investment could harm your business later.
The metric doesn't capture the full picture of your financial commitments. Lease payments, for example, may not appear as capital expenditure depending on how they're classified.
FCF is a backward-looking measure. It tells you what happened in a past period, not what will happen next. Pair it with cash flow forecasting for a more complete view.

Because of these limitations, it's best to use free cash flow alongside other financial metrics rather than relying on it in isolation.

How to improve free cash flow

If your free cash flow is lower than you'd like, there are practical steps you can take to increase it. Most of these come down to either bringing cash in faster or being more deliberate about how you spend it.

Send invoices promptly and follow up on overdue payments. The sooner you collect what you're owed, the more cash you have available. Setting up online invoicing with automatic payment reminders can help reduce delays.
Review your payment terms with customers and suppliers. Shortening customer payment windows or negotiating longer terms with suppliers can improve the timing of your cash flows.
Control discretionary spending. Regularly review subscriptions, services, and overheads to identify costs that aren't contributing to your business.
Plan your capital expenditure carefully. Rather than making large purchases all at once, consider spreading them across periods or timing them to align with stronger cash flow months.
Keep a close eye on stock levels. Tying up cash in excess inventory reduces the cash available for other purposes. Order based on demand patterns rather than in bulk by default.

Small, consistent improvements in these areas can make a noticeable difference to your free cash flow over time. For more practical advice, explore the small business cash flow management guide.

Stay on top of your cash flow with Xero

Understanding free cash flow is an important step towards making confident financial decisions for your business. But keeping track of the numbers behind it, from operating cash flow to capital expenditure, is much easier when your financial data is accurate and up to date.

Xero's cloud accounting software gives you real-time visibility into your cash position. With automatic bank feeds, built-in reporting, and cash flow tracking tools, you can monitor the figures that feed into your free cash flow calculation without manual spreadsheets or guesswork. You can also download the free cash flow statement template to get started.

Whether you're looking to plan ahead, reduce admin, or simply understand where your cash is going, Xero can help you stay in control. Get one month free.

FAQs on free cash flow

Here are answers to some frequently asked questions about free cash flow.

How is free cash flow calculated?

If you don't have formal financial statements yet, you can estimate FCF using your bank records: add up cash received from customers, subtract operating payments and any major asset purchases. The result gives you a rough but useful starting point for tracking your available cash.

What does free cash flow indicate about a business?

Lenders and investors look at FCF to gauge whether your business can service debt or fund returns without needing fresh capital. A rising FCF trend over several quarters is often a stronger signal than any single period's figure.

What is the difference between levered and unlevered free cash flow?

You'd typically present unlevered FCF (FCFF) when pitching to investors, because it shows the total cash your business generates before debt obligations. Levered FCF is more useful for day-to-day planning, since it reflects the cash that's actually yours to spend after loan repayments.

What is a good free cash flow?

A common rule of thumb is to aim for a free cash flow margin (FCF divided by revenue) above 5%, though this varies by industry. Comparing your FCF margin to similar businesses in your sector gives a more meaningful benchmark than looking at the absolute figure alone.

How does free cash flow differ from net cash flow?

A business could show positive net cash flow after taking out a large loan, even if its operations aren't generating enough cash to cover costs. FCF strips out financing activity, so it's a better indicator of whether your core business is self-sustaining.

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Disclaimer

This glossary is for small business owners. The definitions are written with their requirements in mind. More detailed definitions can be found in accounting textbooks or from an accounting professional. Xero does not provide accounting, tax, business or legal advice.

What is free cash flow?

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