How to Calculate Unlevered Free Cash Flow for a DCF

Unlevered free cash flow (UFCF) measures cash generated by a company’s operations and investment activities before accounting for interest, principal repayment, or equity distributions. This unlevered free cash flow calculation is the cornerstone of enterprise-value discounted-cash-flow models, because it isolates the cash available to all stakeholders—creditors and shareholders—regardless of how the firm is financed.

The Logic of Unlevered Cash Flow

The purpose of unlevering cash flow is to value the business itself, not the equity holders’ claim after debt is paid. If a firm has $100 million of operating cash and $50 million of annual interest expense, the equity holders see only $50 million available (simplifying). But if the firm restructures and cuts debt to zero, the same $100 million now flows to shareholders.

Unlevered cash flow separates the value created by operations from the value distributed by capital structure. By calculating UFCF and discounting it at the cost of capital that reflects both debt and equity claims (the weighted average cost of capital, or WACC), an analyst values the entire enterprise. Subtracting net debt from that enterprise value then yields equity value.

This two-step process—value the firm unlevered, then back out net debt—is standard practice in M&A due diligence, leveraged buyout modeling, and comparable-company valuation. It ensures consistency: two similar companies with different debt levels will have the same enterprise value, but different equity values, reflecting their different capital structures.

Step-by-Step Calculation

Step 1: Start with EBIT or EBITDA

Begin with earnings before interest and taxes (EBIT), often labeled Operating Income on the income statement. EBIT already excludes interest, so it represents operating profit independent of how the company is financed.

Alternatively, start with EBITDA (earnings before interest, taxes, depreciation, and amortization). EBITDA is cash operating profit before capital allocation, and it’s common in industries with lumpy or volatile depreciation (e.g., real estate or heavy manufacturing).

Step 2: Compute taxes on operating income

Multiply EBIT by the company’s marginal tax rate. For a U.S. company, this is typically the federal rate (currently 21%) plus state and local taxes, often totaling 25–27%.

EBIT × Tax Rate = Operating Taxes

Deduct this from EBIT to get NOPAT (net operating profit after tax):

NOPAT = EBIT × (1 − Tax Rate)

This step is crucial because it reflects that the government takes a cut before any cash is available to investors. A company generating $100 million EBIT with a 25% tax rate has only $75 million of after-tax operating cash.

Step 3: Add back non-cash charges

Depreciation and amortization reduce reported earnings but are not cash outlays (the cash was spent when the asset was purchased). Add them back:

NOPAT + Depreciation + Amortization = Adjusted Operating Cash

This reflects the reality that the firm’s cash generation exceeds its accounting income.

Step 4: Deduct capital expenditures

The firm must reinvest to maintain and grow its asset base. Capital expenditures (CapEx) are actual cash outlays for plant, equipment, software, and acquisitions. Subtract them:

Adjusted Operating Cash − CapEx = Free Cash After Investment

This is free cash because it’s available after paying for reinvestment. A firm with high depreciation but low CapEx is mining its asset base; a firm with low depreciation but high CapEx is building for the future.

Step 5: Adjust for working capital changes

Working capital—accounts receivable, inventory, and accounts payable—ties up or releases cash as the business scales.

If receivables increase (customers owe more), cash is tied up; deduct the change. If payables increase (the firm owes suppliers more), cash is released; add the change. The net working capital change is:

Change in NWC = (Increase in AR + Increase in Inventory) − (Increase in AP)

Deduct this from free cash:

Free Cash After Investment − Change in NWC = Unlevered Free Cash Flow

Formula Summary

The complete formula is:

UFCF = EBIT × (1 − Tax Rate) + Depreciation + Amortization − CapEx − Change in NWC

Some analysts start with net income (which includes interest) and add back interest net of taxes to re-lever, but the EBIT approach is cleaner and more intuitive for valuation.

A Worked Example

Consider a manufacturing company with the following year’s financials:

Calculation:

• NOPAT = $150M × (1 − 0.25) = $112.5M
• Add back D&A = $112.5M + $30M = $142.5M
• Subtract CapEx = $142.5M − $40M = $102.5M
• Subtract NWC change = $10M + $5M − $3M = $12M
• UFCF = $102.5M − $12M = $90.5M

This $90.5 million is the cash available to both debt holders and equity holders. If the firm’s WACC is 9%, the present value of a perpetual $90.5M stream is $90.5M / 0.09 = roughly $1 billion enterprise value.

Why Exclude Financing Items

Interest, principal repayment, and dividend payments are not included in UFCF because they are decisions about how to allocate cash, not decisions about how much cash the business generates. A firm with $100M UFCF can choose to pay $20M in interest (if leveraged), retain cash for growth, or pay dividends (if unlevered). The UFCF is the same; the allocation differs.

Similarly, equity issuance or debt restructuring do not affect UFCF. They are events that change the firm’s financial structure, not its operational performance.

Levered vs. Unlevered: Key Distinction

Levered free cash flow (to equity) subtracts interest, principal, and debt issuances:

Levered FCF = UFCF − Interest × (1 − Tax Rate) − Principal + Net Debt Issuance

This is the cash available solely to equity holders. It’s useful for valuing equity directly (discounting at the cost of equity rather than WACC), but it requires forecasting financing decisions, which introduces unnecessary complexity.

Most practitioners use UFCF and WACC to value the enterprise, then subtract net debt to get equity value. This cleanly separates operational performance from financial engineering.

Common Pitfalls

Forgetting working capital adjustments. A fast-growing company that extends payment terms to customers (rising receivables) needs more cash than EBIT suggests. Omitting this inflates UFCF.

Using different tax rates for different periods. A startup with tax loss carryforwards may have an effective tax rate near zero, not the marginal rate. Use the rate that actually applies.

Mixing accounting and cash definitions. Stock-based compensation is an accounting expense but a cash outlay if shares are issued; adjust accordingly. Restructuring charges may or may not be cash; check the footnotes.

Misallocating CapEx. Maintenance CapEx sustains operations; growth CapEx drives expansion. Some models separate them, applying growth CapEx only to growing segments. For simplicity, most models include total CapEx, which is conservative (it overstates reinvestment need if most CapEx is growth).

See also