Tax-Equivalent Yield (TEY) Calculator
Compare tax-free municipal bond yields against taxable corporate or Treasury bond yields across federal and state marginal tax brackets.
Enter Parameters
Adjust inputs to calculate real-time estimates
What this tax-equivalent yield (tey) calculator is showing you
This Tax-Equivalent Yield (TEY) Calculator is designed to provide clear, reliable financial mathematics to assist in personal money management and scenario planning.
The tool focuses on transparent formulas, actionable outputs, and practical planning insights to support informed financial decision-making.
Mathematical Model
Tax-Equivalent Yield = Tax-Free Yield / (1 - Combined Marginal Tax Rate)
Inputs that matter most
Understanding how each variable impacts the final calculation
Tax-Exempt Municipal Yield
The primary value establishes the baseline magnitude for the entire calculation model.
Federal Marginal Tax Bracket
The rate or percentage factor determines how the baseline value expands, discounts, or incurs expense over the modeled period.
State Income Tax Rate
The timeframe or secondary parameter provides essential context, defining the duration or conditions under which the math operates.
How to interpret your results
Use the calculation output as an objective decision-making checkpoint. Test multiple input scenarios to observe which variables exert the strongest influence on the final result.
Complement numerical outputs with comprehensive financial planning principles before executing binding commitments.
- ✓ Test both conservative and optimistic scenarios to understand the full sensitivity range of your financial plan.
- ✓ Verify critical calculations against official institutional documentation and qualified professional counsel.
Worked Example Scenario
The snapshot below illustrates a representative calculation using the standard initial parameters:
Tax-Equivalent Yield (TEY)
5.96%
Tax savings yield advantage
+2.11%
Combined marginal tax rate
35.40%
Tax-free municipal yield
3.85%
Calculates the pretax yield required on a taxable bond to equal the after-tax cash return of a tax-exempt municipal bond.
General Financial Calculation Considerations
This calculator provides educational estimates designed for preliminary planning and scenario analysis. Financial outcomes in practice are influenced by individual contractual terms, institutional fees, tax obligations, and market changes.
Verify all critical financial calculations with licensed advisers, institutional documentation, and qualified legal or tax professionals before executing binding agreements.
Key Factors to Review:
- • Calculations are mathematical models based on user-supplied variables.
- • Real-world results may vary due to fees, taxes, and contractual specifics.
Frequently Asked Questions
What is Tax-Equivalent Yield (TEY)? ▼
TEY is the pretax yield that a taxable bond (corporate or Treasury) would need to match the return of a tax-exempt municipal bond.
Who benefits most from municipal bonds? ▼
Investors in higher federal tax brackets (24%, 32%, 35%, 37%) benefit most because their tax savings produce a significantly higher effective yield.