What it means
Most valuation bundles everything into one discount rate. Adjusted present value unbundles, separating the worth of the business from the worth of how it is financed.
The method comes from Stewart Myers, who set it out in 1974, and it answers a practical problem: what to do when the financing itself changes value. Step one values the operations, with free cash flows discounted at the unlevered cost of equity, the rate an all-equity firm would demand.
Step two adds the financing side effects, starting with the tax deductibility of interest, which creates a shield worth real money, added as its own present value. Other effects slot in the same way, as subsidised loans, issue costs and financial distress costs each get valued separately and added or subtracted.
The contrast with WACC (the weighted average cost of capital) is instructive. WACC folds the tax shield into one rate, assuming a steady debt ratio, so APV shines exactly where WACC strains.
Leveraged buyouts, with their high and falling debt loads, break the constant-leverage assumption, and project finance fits APV naturally because debt schedules are contractual and known, so the shields can be valued period by period. The discipline is honest bookkeeping.
Every financing effect must be valued once, and double counting the shield in both steps is the classic error. Uncertainty about the shield's own risk matters too: if debt levels vary with firm value, the shield is riskier than the debt itself and deserves a higher discount rate.
Distress costs are the sober counterweight. The same leverage that mints tax shields buys fragility, and honest APV prices both.
The unlevered value is the anchor, since everything else in APV is an adjustment to a number that must first be right. For a manager, APV makes financing strategy visible, because the same project shows different values under different funding plans, quantified side by side.
Bankers keep both methods at hand, with WACC giving the quick market view and APV decomposing the deal when financing is the story. When leverage is stable, WACC suffices; when leverage is the deal, APV is the instrument, and the order of operations, operations first and financing second, is the entire discipline.
In practice
Real-world examples.
Example
An analyst values a factory at its unlevered rate, then adds the present value of a subsidised government loan's interest savings, arriving above the plain NPV. The two steps are shown on separate lines of the model so the loan's contribution is visible.
Example
A project finance team discounts each year's contractual interest tax shield separately as the project debt amortises on schedule. Because the repayment schedule is fixed, the shield falls each year as the balance shrinks. The team uses the debt rate to discount it.
Example
A company compares two funding plans for the same expansion, and APV shows the higher-debt plan adds $15 million of shield but $9 million of expected distress costs. The net benefit of $6 million is positive but small. The board chooses the lower-debt plan because the distress estimate is the less certain number.
Formula
Calculation
APV = NPV of the project at the unlevered cost of equity + present value of financing side effects. The main side effect is the interest tax shield, equal to debt x interest rate x tax rate each period, discounted at a rate reflecting the shield's own risk, plus or minus issue costs and distress costs.
A worked example: a project costs $1,000,000 and its cash flows have a present value of $1,150,000 at the unlevered cost of equity, so the base NPV is $150,000. It is funded with $500,000 of debt at 6% for five years, with a 25% tax rate. The annual shield is $500,000 x 6% x 25% = $7,500. Discounted at the 6% debt rate with an annuity factor of 4.2124, the present value is $7,500 x 4.2124 = about $31,600. Issue costs are $10,000, so APV = $150,000 + $31,600 - $10,000 = $171,600.Case study
Seen in the real world.
A made-up buyout firm, Ashgrove Capital, values a target's operations at $400 million unlevered. This case study is fictional and illustrative. Its five-year debt schedule throws off interest shields worth $38 million in present value, minus $6 million of issue costs, giving an APV of $432 million and headroom above the asking price. With an asking price of $415 million, the headroom is $432 million - $415 million = $17 million. The deal team uses that margin to test the downside: if the shields come in $10 million lower than modelled, the APV falls to $422 million, still above the asking price.
Watch out
Common mistakes.
- Double counting the tax shield; using a WACC that already reflects leverage and then adding shields inflates value. Pick one framework and stay inside it.
- Discounting shields at the wrong rate; the shield's risk follows the debt policy. Fixed schedules deserve the debt rate; proportional debt deserves a higher one.
- Forgetting side effects beyond taxes; issue costs, subsidies and distress all belong in the sum. List every financing effect before concluding.
Questions
People also ask.
What is adjusted present value?
A valuation method that discounts operating cash flows at the unlevered cost of equity, then separately adds the present value of financing effects like interest tax shields.
When is APV better than WACC?
When capital structure changes over time, as in leveraged buyouts and project finance, because WACC assumes a roughly constant debt ratio while APV values each financing effect explicitly.
Who developed adjusted present value?
Economist Stewart Myers set out the method in 1974, building on the Modigliani-Miller insight that financing choices can change total value through taxes and costs.
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