Finance category

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Blended Cost of Capital Calculator

Blended cost of capital tells you the floor return needed to clear the capital stack. This calculator weights each tier and returns WACC.

Senior loan $

Mezz $

Pref equity $

Common equity $

Senior rate

Mezz rate

Pref return

Common IRR

Blended WACC

9.93%

Debt-only WACC

6.96%

Total stack

$10,000,000

How the math works

WACC = Σ(tier × rate) ÷ total stack. Each dollar in the stack costs its own rate; the weighted blend is the return floor.

Project IRR must clear WACC plus margin. Deal economics boil down to: project return > WACC + risk premium. Below that, value is being transferred to investors, not created.

Editorial noteMaintained by EveryCalc - Reviewed June 2026

EveryCalc calculators are designed for fast, practical estimates with transparent inputs and no required account. We use plain formulas, visible assumptions, and related tools so visitors can check the result from more than one angle.

Results are informational only. For financial, tax, legal, medical, construction, or other high-impact decisions, verify the output against primary sources or a qualified professional.

Learn more about our review process on the EveryCalc methodology page.

How this calculator works

What this page estimates

This Blended Cost of Capital Calculator is built to give a quick, browser-based estimate for blended cost of capital. Blended cost of capital tells you the floor return needed to clear the capital stack. This calculator weights each tier and returns WACC. The inputs stay on the page during normal use, and the result should be treated as an estimate for planning, comparison, or education rather than professional advice.

Calculation approach

The calculator applies the standard relationship implied by the inputs, then formats the answer so it can be checked and reused. For finance tools, the most important step is using consistent units, rates, time periods, and assumptions before comparing the result with another calculator or outside quote.

Example workflow

For example, start with a realistic value you already know, change one input at a time, and watch how the answer moves. That makes it easier to tell whether the result is being driven by the main amount, the rate, the time period, or a unit conversion.

Practical checks

Use current, real-world numbers when the result affects money, health, tax, or legal decisions.
Run a low, base, and high case when the inputs are estimates.
Check the related calculators below when the next decision depends on a different assumption.

How to interpret the blended cost of capital result

Best use

Use the result as a planning number for comparing payments, rates, returns, tax reserves, or cash-flow choices before you request a quote or make a commitment.

Cross-check

Compare the answer with the contract, lender estimate, tax form, brokerage statement, payroll record, or invoice that will control the real-world outcome.

Watch for

Do not rely on a single optimistic rate, return, or fee assumption. Money pages work best when you run low, base, and high cases and keep professional advice separate from the estimate.

This page belongs to the Finance calculator library, so the answer should be read in the context of the decision you are modeling rather than as a universal rule.

Before relying on this blended cost of capital estimate

Most calculator mistakes come from the inputs, not the arithmetic. Use this short audit before you reuse the answer in a spreadsheet, quote, application, or important conversation.

Confirm source numbers

Match balances, rates, fees, taxes, income, and payment dates against the lender quote, payroll record, tax form, statement, invoice, or contract.

Separate cash flow from total cost

A lower monthly payment can still cost more over time if fees, interest, taxes, or a longer term are hidden in the structure.

Run conservative cases

Test at least one higher-cost or lower-return case before using the output for a purchase, refinance, investment, loan, or tax decision.

Rerun this page when the rate, price, term, fee, tax rule, income, expense, or expected holding period changes.

How to Use

Enter each capital tier amount.
Enter each tier's rate or return.
Read blended WACC.

Frequently Asked Questions

What is 'good' WACC?

Core: 5-7%. Value-add: 8-10%. Development: 10-13%. Distressed: 14%+. Match your WACC to your asset risk profile.

Why tax-adjust?

For taxable entities, debt interest is deductible — effectively lowering after-tax cost. Most real estate is pass-through, so tax shield flows to investors; adjust at investor level, not entity.

Deal must beat WACC by how much?

Minimum 200bps for core, 400-500bps for development. Thinner spreads = limited margin for error. Investors demand wider spreads for riskier deals.

How does this interact with the rest of the capital stack?

Each tier of the stack affects the next. Senior debt constrains LTC and DSCR. Mezz and pref consume equity spread. Interest rate hedges protect DSCR but cost premium. Always model the full stack holistically — optimizing one tier alone often degrades another. Institutional underwriters run three or four scenarios across the stack before committing capital.