💰FinanceUpdated March 2026

Free Municipal Bond Calculator 2026 — Tax-Free Returns

Calculate municipal bond returns. See equivalent taxable yield and after-tax returns.

Bond Settings

$25,000
4.00%
10 years

Your Tax Bracket

Tax-Equivalent Yield

6.19%

vs 4.00% tax-free

Tax-Free Income

$10,000

Total Tax Savings

+$5,480

Comparison Over 10 Years

Municipal Bond (Tax-Free)$10,000
Equivalent Taxable Bond$15,480
Your Tax Savings+$5,480

Tax-Free Benefits

With a 35% combined tax rate, your 4.0% muni yield is equivalent to a 6.19% taxable bond. Munis are especially valuable for investors in high tax brackets.

How to use this calculator

  1. 1Enter the municipal bond yield (coupon rate).
  2. 2Select your federal income tax bracket.
  3. 3Select your state tax bracket (if applicable).
  4. 4View tax-equivalent yield and after-tax returns.

Written by FreeToolCalc Team

Formulas based on standard financial/medical equations. Last updated: March 2026.

Understanding Municipal Bonds

Municipal bonds (munis) are debt securities issued by states, cities, counties, and other local governments to fund public projects like schools, highways, and water treatment facilities.

Types of Municipal Bonds

General Obligation (GO)

Backed by full faith and credit of issuer. Typically lower yields, higher credit quality.

Revenue Bonds

Backed by specific project revenue (tolls, utilities). Higher yields, more credit risk.

Who Should Buy Municipal Bonds?

  • High-income investors in high-tax states (NY, CA, NJ)
  • Tax-deferred account holders seeking diversification
  • Investors seeking stable, predictable income
  • Those in the 32%+ federal tax bracket

Related Calculators

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Treasury Bond Calculator

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Savings Bond Calculator

Calculate savings bonds

Frequently Asked Questions

Why are municipal bonds considered tax-free?

Municipal bond interest is exempt from federal income tax and, in most cases, state and local taxes if you live in the state where the bond was issued. This makes munis particularly attractive for high-income investors.

What is tax-equivalent yield?

Tax-equivalent yield is the return a taxable bond would need to provide to match the tax-free return of a municipal bond. Formula: Muni Yield / (1 - Tax Rate). For a 4% muni yield and 32% tax bracket, equivalent yield is 5.88%.

Are muni bonds always the best choice for high earners?

Not always. High earners in low-tax states may find taxable bonds with higher yields more beneficial. Compare the tax-equivalent yield to find the best option for your specific tax situation.

What are the risks of municipal bonds?

Municipal bonds carry interest rate risk (prices fall when rates rise), credit risk (issuer may default), and liquidity risk (harder to sell before maturity). Revenue bonds are generally riskier than general obligation bonds.