Unlevered Beta Calculator - Hamada Asset Beta

Use this unlevered beta calculator to convert a levered beta to asset beta, then re-lever to your target D/E and tax rate for WACC and DCF.

Updated: June 12, 2026 • Free Tool

Unlevered Beta Calculator

Observed equity beta from a regression of stock returns against a benchmark.

$

Total interest-bearing debt in dollars (market or book value).

$

Equity market value or book equity used in the D/E ratio.

%

Marginal corporate tax rate applied as a tax shield on debt.

$

Target interest-bearing debt in dollars for the re-levered structure.

$

Target equity in dollars for the re-levered structure.

%

Target marginal corporate tax rate for the re-levered structure.

Results

Unlevered beta
0
Current D/E ratio 0
Re-levered beta 0
Target D/E ratio 0

What Is Unlevered Beta Calculator?

An unlevered beta calculator removes the leverage effect from an observed equity beta so you can compare pure business risk across companies with different capital structures. Use it when you have a peer company's levered beta and want to translate that sensitivity into the asset beta you would use in a WACC, cost of capital, or DCF model.

  • Peer benchmarking for WACC: Strip a peer's debt effect from its published equity beta so you can compare its operating risk with your own before relevering to your capital structure.
  • Re-levering for valuation work: Convert a peer beta to your target debt-to-equity and tax rate so the resulting beta reflects the financing you plan to use, not the peer's.
  • Sensitivity to leverage changes: Test how a higher or lower D/E shifts the equity beta so you can see how much of the risk is leverage rather than operations.

A levered (equity) beta mixes two effects: the company's business risk and the magnifying effect of debt on equity returns. An unlevered (asset) beta isolates the business risk by removing the debt-driven part, and the Hamada equation is the standard tool for that conversion.

Asset beta should be read as a range, not a single point. The unlevered beta calculator output depends on the benchmark you used for the original regression, the debt and equity values you choose, and the time window you observe.

When you need the underlying equity beta to feed into this tool, the beta stock calculator produces the regression-based beta from a series of stock and market returns.

How Unlevered Beta Calculator Works

The unlevered beta calculator applies the Hamada equation in two steps. It first divides the levered beta by the source tax-shield factor to get the asset beta, then multiplies that asset beta by the target tax-shield factor to get the re-levered beta. Every input stays on screen so the same result can be checked in a spreadsheet.

unlevered beta = levered beta / [1 + (1 - tax rate) x (debt / equity)]; re-levered beta = unlevered beta x [1 + (1 - target tax rate) x (target debt / target equity)]
  • Levered beta: The observed equity beta, usually from a regression of stock returns against a market index.
  • Total debt and total equity: Source company debt and equity in dollars; the calculator converts these to a D/E ratio.
  • Effective tax rate: The marginal corporate tax rate that drives the tax shield on debt interest.
  • Target debt, target equity, target tax rate: The capital structure and tax rate the asset beta will be re-levered to.

The source tax-shield factor is one plus the product of one minus the tax rate and the source D/E ratio. Dividing the levered beta by that factor returns the business-only beta. If the source has no debt, the factor is one and unlevered beta equals levered beta.

The target tax-shield factor uses the target D/E and target tax rate. Multiplying the asset beta by that factor scales the business risk back up to the leverage you plan to use. If the target D/E matches the source D/E and the tax rate is unchanged, re-levered beta equals the original levered beta, which is a useful sanity check.

Default peer relever example

Inputs: levered beta = 1.20; debt = $1M; equity = $2M; tax rate = 25%; target debt = $2M; target equity = $4M.

Source D/E = 0.5; source factor = 1.375; unlevered beta = 1.20 / 1.375 = 0.8727. Target D/E = 0.5; target factor = 1.375; re-levered beta = 0.8727 x 1.375 = 1.20.

Result: unlevered (asset) beta is 0.873, current D/E is 0.500, re-levered beta is 1.200, and target D/E is 0.500.

Because the target structure matches the source, the re-levered beta equals the original levered beta, which is a clean sign that the math is wired correctly.

According to Corporate Finance Institute, unlevered (asset) beta measures a firm's business risk without the effect of leverage and is calculated by removing the tax shield benefit of debt from the levered beta.

After the re-levered beta is in hand, the CAPM calculator turns it into an expected return through the risk-free rate and the market risk premium.

Key Concepts Explained

Four concepts help keep the math and the output in context before you plug the result into a WACC or DCF model.

Equity beta vs. asset beta

Equity beta (levered beta) reflects the risk a shareholder takes. Asset beta (unlevered beta) reflects the risk of the underlying operations. The Hamada equation connects the two with a leverage term and a tax shield.

Hamada equation

Hamada's formula assumes debt is constant and risk-free, taxes are paid on the interest shield, and the underlying operating beta is stable. Those assumptions drive the simple 1 + (1 - t)(D/E) factor that links the two betas.

Tax shield on debt

Interest expense is tax-deductible, so the after-tax cost of debt is lower than the pretax cost. The Hamada equation uses the marginal tax rate to scale the leverage term, which lowers the equity beta that debt can support.

D/E vs. D/V weighting

The Hamada equation uses the debt-to-equity ratio, not the debt-to-value ratio. If you only have D/V (debt to firm value), convert it to D/E = (D/V) / (1 - D/V) before applying the formula.

Beta is always relative to a chosen benchmark. A 1.2 levered beta versus the S&P 500 differs from a 1.2 beta versus a sector index, and the unlevered version inherits that benchmark dependence. Use the same benchmark consistently when comparing the unlevered beta across companies.

When the discussion shifts from asset beta to required return on equity, the cost of equity calculator helps translate beta into the rate that should appear in the cost of equity term of a WACC.

How to Use This Calculator

Enter the peer's levered beta and capital structure first, then add the tax rate and the target capital structure that reflects your own financing plan.

  1. 1 Pull the levered beta: Use a published equity beta for the peer company, ideally from the same data source and benchmark that the rest of your analysis uses.
  2. 2 Enter debt and equity: Type the peer's total interest-bearing debt and total equity in dollars. The calculator computes the D/E ratio for you.
  3. 3 Set the tax rate: Use the marginal corporate tax rate that matches the peer's jurisdiction. The U.S. federal rate is 21 percent.
  4. 4 Enter the target structure: Add the debt and equity values that represent the financing you plan to use, not the peer's structure.
  5. 5 Set the target tax rate: Match the target tax rate to the jurisdiction where the target structure will sit. Keep both tax rates consistent across the model.
  6. 6 Review the D/E shift: Compare the current and target D/E ratios. A large shift means leverage is doing most of the work in the re-levered result.

For example, a peer with a 1.2 levered beta, $1M of debt, $2M of equity, and a 25% tax rate produces an asset beta of about 0.873. If your own structure plans to use $2M of debt against $4M of equity at the same 25% tax rate, the re-levered beta returns to 1.2, which is a clean sign that the leverage profile matches.

Once the re-levered beta is computed, the cost of capital calculator combines it with the cost of debt to produce a full WACC for the valuation model.

Benefits of Using This Calculator

An unlevered beta calculator saves time when you need a quick but traceable asset beta before deeper valuation or risk work.

  • Translates the math visibly: Every input and factor stays on the screen, so the same result can be checked in a spreadsheet or shared in a memo.
  • Connects peer beta to your WACC: The re-levered beta drops straight into a WACC, cost of capital, or CAPM workflow with no manual recompute.
  • Shows the leverage shift: Side-by-side D/E ratios make it obvious how much of the beta change comes from financing rather than operations.
  • Honors different tax environments: Separate tax rates for the source and target structures reflect cross-border deals or post-tax-shield jurisdictions.
  • Catches edge cases: Zero-debt and zero-equity inputs trigger clear validation messages so a bad input does not silently produce a number.

Use the result as a starting point. The unlevered beta depends on the same benchmark, time window, and regression method you used for the levered beta.

When the re-levered beta feeds a discount rate, the DCF calculator shows how the resulting WACC moves the present value of a discounted cash flow.

Factors That Affect Your Results

An unlevered beta calculator result can move even when the business has not changed, because each input feeds the Hamada equation.

Benchmark choice

A 1.2 beta against the S&P 500 differs from a 1.2 beta against a sector index. Pick a benchmark that matches the question you are trying to answer.

Time window and frequency

Daily, weekly, and monthly returns can produce different beta estimates. A short window captures the latest cycle; a long window smooths through it but may miss a structural change.

Debt and equity values

Market-value debt and book-value debt can disagree in distressed companies, and book equity often lags the actual market cap. Pick the convention that matches your valuation horizon.

Tax rate choice

The marginal rate and the effective rate can differ. A lower rate raises the after-tax cost of debt and increases the equity beta that debt can support.

Capital structure change

The Hamada equation assumes a stable capital structure. A leveraged buyout, refinancing, or large new issue invalidates the assumption until the new structure is reflected in the inputs.

  • The Hamada equation assumes debt is constant and risk-free. Variable-rate debt, covenants, or distress change the math and should be reflected in the inputs.
  • Unlevered beta is still a historical estimate. It does not include forward-looking operational risk, ESG exposure, or a business model that has changed since the regression window.
  • Using a peer's beta requires a comparable capital structure. Differences in size, geography, or business mix can leave the peer beta too high or too low even after unlevering.

Refresh the unlevered beta when the peer issues or retires debt, refinances, or completes a major acquisition. A beta that was clean last year may be stale this year, and the re-levered number will inherit that staleness if you do not update the source.

According to Investopedia, unlevered beta strips the impact of debt from a company's equity beta so investors can compare the underlying business risk of companies with different capital structures.

According to Internal Revenue Service, the U.S. federal corporate income tax rate is 21 percent, which is the statutory tax rate commonly used in the Hamada equation tax shield term.

If the same asset beta has to be combined with other positions in a multi-asset portfolio, the portfolio beta calculator can aggregate weighted betas at the holding level.

unlevered beta calculator showing levered beta, debt, equity, tax rate, unlevered asset beta, and re-levered beta for WACC and DCF
unlevered beta calculator showing levered beta, debt, equity, tax rate, unlevered asset beta, and re-levered beta for WACC and DCF

Frequently Asked Questions

Q: What is unlevered beta?

A: Unlevered (asset) beta is the sensitivity of a company's underlying operations to the market, with the debt effect removed. It isolates business risk from financing risk.

Q: How do I unlever beta using the Hamada equation?

A: Divide the levered beta by one plus the product of (1 minus the marginal tax rate) and the D/E ratio. A 1.20 beta with 0.5 D/E and a 25% tax rate gives an asset beta of about 0.873.

Q: What is the difference between levered beta and unlevered beta?

A: Levered beta is the equity beta observed in a stock-return regression. Unlevered beta is the same sensitivity after removing the debt effect.

Q: Why do analysts unlever and re-lever beta?

A: Analysts unlever a peer's equity beta to compare pure business risk, then re-lever it to their own target capital structure for WACC and DCF work.

Q: How do I relever beta to a target capital structure?

A: Multiply the asset beta by one plus the product of (1 minus the target tax rate) and the target D/E ratio. The same Hamada form applies in reverse.

Q: Is unlevered beta the same as the asset beta used in WACC?

A: Yes. WACC and cost of capital models use the unlevered beta to size the equity component, then re-lever to the target D/E for the cost of equity term.