Tax Equivalent Yield Calculator

Calculate the taxable equivalent yield of municipal bonds. Compare tax-free and taxable investments.

Compare taxable vs tax-free bond yields.

About This Calculator

The Tax Equivalent Yield Calculator helps you compare tax-free municipal bonds to taxable investments. A tax-free yield may be worth more than it appears once you account for your tax bracket.

Municipal bonds offer tax-exempt interest at the federal level (and often state level for in-state bonds). For investors in higher tax brackets, a seemingly lower muni yield can actually provide better after-tax returns than higher-yielding taxable bonds.

The Tax Equivalent Yield Formula

TEY = Tax-Free Yield ÷ (1 - Tax Rate)

This shows what a taxable bond would need to yield to equal the muni's after-tax return.

Practical Example

3.5% muni yield in 32% tax bracket: TEY = 3.5% ÷ (1 - 0.32) = 5.15%. A taxable bond would need to yield 5.15% to match the muni's after-tax return!

TEY by Tax Bracket

Muni Yield22% Bracket32% Bracket37% Bracket
3.0%3.85%4.41%4.76%
3.5%4.49%5.15%5.56%
4.0%5.13%5.88%6.35%

Pro Tips

  • Higher tax brackets benefit more from munis
  • In-state munis may also be state tax-exempt
  • AMT (Alternative Minimum Tax) may apply to some munis
  • Compare to taxable bonds after calculating TEY

Related tools: Bond Calculator for yields and pricing, Income Tax Calculator to find your bracket, and Investment Calculator for portfolio planning.

Frequently Asked Questions

How is tax equivalent yield calculated?

TEY = Tax-Free Yield ÷ (1 - Tax Rate). For 3.5% muni yield in 32% bracket: TEY = 3.5 ÷ 0.68 = 5.15%. A taxable bond needs 5.15% to match.

Are municipal bonds worth it for my tax bracket?

Higher brackets benefit more. In 37% bracket, 4% muni = 6.35% taxable equivalent. In 12% bracket, same muni = only 4.55% taxable. Compare before buying.

What are the risks of municipal bonds?

Credit risk (rare defaults), interest rate risk, call risk (early redemption), and liquidity risk. Research bond ratings. AAA/AA rated munis are very safe.