WACC Calculator
v1.3Weighted Average Cost of Capital blending equity and after-tax debt.
Last updated · 1 min read
- Formula verified
- Mobile friendly
- Free to use
- No signup required
Inputs
From CAPM: Rf + β(Rm − Rf)
Yield on outstanding debt
US federal corporate 21%
Result
WACC
9.58%
Blended cost of capital
Saved calculations remain on this device unless you choose to share them. No tracking, no account needed.
Result Intelligence
Understand your result
- Your wacc is 9.58%. Business metrics are most useful when tracked month over month, not once.
- Benchmarks vary by industry — compare against your NAICS peer set.
What should you do next?
- Break-Even Calculator
Find the sales volume that covers costs.
- Profit Margin Calculator
Benchmark gross, operating and net margin.
- Cash Flow Calculator
Runway matters more than accounting profit.
- DSCR Loan Calculator
Check lender coverage on new business debt.
Ways to improve your result
- Watch cash conversion cycle, not just P&L — cash kills companies.
- Renegotiate top-5 vendor contracts annually.
- Move variable costs to fixed only when volume is predictable.
Common U.S. scenarios
Denver Shopify store
35% gross margin, $180k revenue — break-even sits at ~$95k after fixed costs.
Miami service firm
DSCR 1.4 clears most SBA 7(a) underwriting for expansion capital.
Portland SaaS
Rule of 40: revenue growth% + FCF margin% ≥ 40 is the investor benchmark.
Result summary
WACC Calculator WACC Calculator WACC: 9.58% Equity Weight: 66.7% Debt Weight: 33.3% After-Tax Cost of Debt: 4.74% WACC = 9.58%.
WACC Calculator: Your result quantifies the KPI implied by the assumptions above. Rerun with conservative and aggressive inputs to see the plausible range.
What does this result mean?
- A CAC:LTV ratio below 1:3 usually signals unsustainable growth economics.
- Gross margin above 60% is the software benchmark; below 40% typically means a services business.
- Break-even in units tells you the sales floor you need to cover fixed costs.
Step-by-step guide
- 1Enter your revenue, cost, or customer metrics.
- 2Set growth, margin, or retention assumptions.
- 3Review the calculated KPI and its components.
- 4Copy the result into your dashboard or investor update.
Real USA example
Scenario: A SaaS startup has 500 paying customers, $80 ARPU, 3% monthly churn, and $400 CAC.
Result: MRR ≈ $40,000, LTV ≈ $2,667, CAC:LTV ≈ 1:6.7 — healthy unit economics with about a 5-month payback period.
Illustrative only — plug your own numbers into the calculator above for a personalized figure.
Who should use this calculator?
- Founders modelling revenue, CAC or LTV
- Marketing teams sizing campaign ROI
- Ops teams tracking unit economics
- Investors running quick diligence
When should you use it?
- Before launching a new campaign or product
- During monthly or quarterly business reviews
- When fundraising or building a pitch model
- Before making a hiring or pricing decision
What affects the result?
- Assumptions about growth, churn or margin
- Time period consistency (monthly vs annual)
- One-time vs recurring inputs
- Segment or cohort you're modelling
Common mistakes to avoid
- Using inconsistent time periods (monthly vs annual).
- Ignoring churn or refunds when projecting revenue.
Professional tips
- Track cohort behaviour, not just aggregate metrics.
- Keep unit economics honest by including all variable costs.
- Sanity-check projections against the past 3–6 months of actuals.
Official Sources & References
The formulas, rates and definitions used by this calculator are aligned with the following official sources:
- U.S. Small Business Administration (SBA) — Definitions for break-even, margin and small-business planning.
- Financial Accounting Standards Board (FASB) — U.S. GAAP definitions for margin, revenue and cost categories.
We use only primary sources — regulators, standards bodies and scheme operators. See our full sourcing policy for details. Sources & References Policy · Calculator Methodology · How We Verify Formulas
Trust & Accuracy
Formula verified
Verified against U.S. GAAP / SBA definitions.
Last reviewed
June 27, 2026
Accuracy tested
Edge cases tested, formula validation and manual verification completed.
Available for
United States, Canada, United Kingdom, Australia, India, European Union.
Currency support
USD · INR · CAD · AUD · GBP · EUR
Privacy
No information entered into this calculator is stored on our servers unless you explicitly choose to save or share your calculation.
Print, share & save
Use the Save, Share, Copy, PDF, CSV and Print actions under the result panel.
Accessibility
Keyboard navigable, screen-reader friendly labels, responsive on mobile and desktop.
Learn more: How we verify formulas · How we test accuracy · Methodology · Editorial policy
Recent Updates
We continuously review and improve our calculators to keep formulas, assumptions and references accurate.
View change log (4)Show
- v1.3
Added Trust & Accuracy panel and machine-readable change log.
- v1.2
Added Save, Share, PDF, CSV and Print actions to results.
- v1.1
Added global currency selector (USD, INR, CAD, AUD, GBP, EUR).
- v1.0
Initial calculator release with verified formulas and Official Sources.
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