Calculate free cash flow (operating cash flow minus capital expenditures), FCF margin, and FCF yield — the metric investors use to assess true cash generation.
Free cash flow (FCF) is the cash a business generates after accounting for capital
expenditures. It's the truest measure of a company's ability to generate cash —
more reliable than earnings (which can be distorted by accounting choices) and
more actionable than revenue growth alone.
The formula
FCF = Operating Cash Flow − Capital Expenditures
A company with $500k OCF and $80k capex generates $420k FCF.
Why FCF matters more than EBITDA
EBITDA adds back non-cash charges to normalize earnings across capital structures.
FCF goes further: it accounts for capital reinvestment required to sustain the
business. A company spending heavily on equipment might have strong EBITDA but
negative FCF — it's not actually retaining cash.
For SaaS companies, the gap between EBITDA and FCF is usually small (capex is
minimal). For hardware, manufacturing, or infrastructure businesses, capex can
consume 30–50% of operating cash flow, making FCF very different from EBITDA.
FCF margin benchmarks
Company type
FCF Margin
Top-tier SaaS (Shopify, Veeva)
20–30%
Typical profitable SaaS
10–20%
Early-stage / growth SaaS
0–10%
High-capex businesses
-10–+5%
FCF yield for valuation
FCF yield = FCF / Market Cap × 100
A 5% FCF yield means you're paying 20× FCF. A 2% yield means 50× FCF.
Generally: FCF yields above 4–5% are considered cheap; below 1.5% is expensive.
Adjust for growth expectations — high-growth companies justify lower yields.
FCF vs free cash flow to equity (FCFE)
FCF is firm-level cash generation before debt service. FCFE subtracts debt
payments: FCFE = FCF − (Debt Repayment − New Debt). For equity investors
valuing a leveraged company, FCFE is more relevant.
Frequently asked questions
What does this calculator do?
Calculate free cash flow from operating cash flow and capex, plus FCF margin
and optional FCF yield for valuation context.
What Is Free Cash Flow? Definition, Formula, and Why It Matters
Free cash flow is operating cash flow minus capex — the true measure of a company's cash generation. Learn the formula, benchmarks, and why investors prefer FCF over earnings.
Free cash flow (FCF) is the cash left over after a company pays for capital
expenditures needed to sustain or expand its asset base. It's the cash available
to return to shareholders, pay down debt, or reinvest in growth.
Formula: FCF = Operating Cash Flow − Capital Expenditures
Why investors focus on FCF
Accounting earnings can be manipulated through depreciation schedules, revenue
recognition timing, and accrual accounting. Cash flow is harder to fake. A company
that earns $10M but has negative FCF may look profitable on paper while burning cash.
Free cash flow is the denominator in one of the most important valuation multiples:
Price-to-FCF (P/FCF). A company trading at 20× FCF ($20 market cap per $1 of FCF)
returns a 5% FCF yield — the cash generation rate you're paying for.
Where to find the inputs
Operating Cash Flow: In the cash flow statement under "Cash from Operations."
This starts with net income and adds back non-cash charges (D&A) and adjusts
for working capital changes.
Capital Expenditures (CapEx): In the cash flow statement under "Cash from
Investing Activities," usually labelled "Purchases of property and equipment" or
"Capital expenditures." Always a negative number (cash outflow).
For private companies, OCF = Net Income + Depreciation & Amortization −
Increase in Working Capital.
FCF vs related metrics
Metric
What it measures
Free Cash Flow
Cash after capex — available to owners
EBITDA
Proxy for operating cash flow before capex
Net Income
Accounting profit — includes non-cash items
Operating Cash Flow
Cash from operations before capex
For SaaS companies, capex is typically low (servers, laptops), so EBITDA and FCF
are similar. For capital-intensive businesses (manufacturing, real estate), FCF
can be dramatically lower than EBITDA.
Free Cash Flow vs EBITDA: Key Differences for SaaS Companies
FCF and EBITDA both measure cash generation, but they differ in how they treat capital expenditures. Learn when each metric matters and why FCF is the stronger indicator.
EBITDA and FCF are both popular measures of cash generation, but they answer
different questions. Understanding the difference helps you communicate financials
clearly to investors and make better capital allocation decisions.
What EBITDA measures
EBITDA = Net Income + Interest + Taxes + Depreciation + Amortization
EBITDA is useful for comparing profitability across companies with different
capital structures, depreciation policies, or tax rates. It's also a common
input for LBO models and debt covenants (Net Debt / EBITDA).
What FCF measures
FCF = Operating Cash Flow − Capital Expenditures
FCF goes further than EBITDA: it subtracts actual cash invested in capital
expenditures. Unlike depreciation (which EBITDA adds back), capex is real cash
leaving the business.
FCF answers: "After paying for the investments needed to sustain and grow the
business, how much cash remains?"
Why the gap matters
For SaaS companies with minimal capex (servers, laptops), EBITDA ≈ FCF.
The difference is usually 2–5% of revenue.
For capital-intensive businesses, the gap is dramatic:
Business type
EBITDA Margin
Capex / Revenue
FCF Margin
Cloud SaaS
20%
2%
18%
On-premise software
25%
5%
20%
Telecom
35%
20%
15%
Manufacturing
15%
12%
3%
When to use each
Use EBITDA when:
- Comparing companies in the same industry with different capital structures
- Calculating leverage ratios (Net Debt/EBITDA)
- Doing LBO or M&A valuation analysis
Use FCF when:
- Valuing equity (P/FCF multiple)
- Assessing true cash generation quality
- Deciding dividend or buyback capacity
- Evaluating capex-heavy vs asset-light business models
For investor-facing reporting, FCF is the higher-quality signal. EBITDA can be
padded; FCF requires actually having cash in the bank.
How to Improve Free Cash Flow Margin: 5 Levers for SaaS Companies
FCF margin = FCF / revenue. Learn the five highest-leverage ways to expand FCF margin, from reducing capex intensity to improving working capital management.
FCF margin is free cash flow divided by revenue. Improving it means either
generating more cash per dollar of revenue or reducing capital expenditures.
Here are the five highest-leverage levers for software companies.
Lever 1: Move customers to annual billing
Upfront annual payments dramatically improve FCF without changing revenue or
EBITDA. When a customer pays $12,000 upfront instead of $1,000/month:
- Revenue recognition is the same (1/12 per month)
- Cash collected is 12× larger on day 1
- Working capital improves by ~11 months of MRR per converted customer
If you convert 30% of monthly customers to annual at 10% discount, the FCF
improvement can be 15–20% of ARR in the transition year.
Tactic: Offer a 1–2 month discount for annual prepay. Frame as "2 months free"
rather than a percentage discount — higher perceived value.
Lever 2: Reduce gross capex (infrastructure efficiency)
For SaaS companies, infrastructure costs (cloud compute, storage) often masquerade
as operating costs rather than capex. But infrastructure efficiency directly improves
OCF and by extension FCF.
Common improvements:
- Right-size reserved instance commitments (AWS/GCP savings plans)
- Identify idle compute and auto-scaling opportunities
- Optimize database query efficiency to reduce compute costs
A 20% infrastructure efficiency improvement on $200k/year of cloud spend adds
$40k to OCF — direct FCF improvement.
High DSO means revenue is recognized before cash is collected — working capital
drag that reduces OCF. Reducing DSO from 45 to 30 days at $5M ARR frees up
~$200k in cash.
Tactics:
- Require credit card or ACH on file before activation
- Automate dunning sequences for failed payments
- Offer 1–2% early payment discount for enterprise invoices
Extending payment terms from 30 to 45 days with key vendors adds working capital.
For a company with $500k/year in vendor payments, extending from 30 to 45 days
adds ~$20k in float.
Note: extending terms can damage vendor relationships. Do this with large vendors
who have the capacity to offer better terms, not small suppliers.
Lever 5: Reduce capex intensity
For pure SaaS, capex is usually minimal. If capex is significant (data center
hardware, IP acquisitions), evaluate:
- Lease vs buy analysis for equipment
- Cloud vs colocation trade-offs
- Deferring non-critical capex during low-growth periods
Shifting from owned hardware to cloud increases operating expenses but reduces
capex — typically improving FCF margin even if total cost is similar, because
cloud costs are already excluded from capex.