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Muni Bond Tax-Equivalent Yield Calculator

Compare the after-tax value of municipal bonds to taxable bonds by calculating what yield a taxable bond would need to match your muni's return, accounting for federal and state taxes.

Quick answer: Estimate tax-equivalent yield using entered tax assumptions for the taxable comparator. Enter Municipal Bond Yield, Federal Marginal Tax Rate, State Marginal Tax Rate, and Subject to the 3.8% NIIT to personalize the estimate. It returns Tax-Equivalent Yield, Combined Tax Rate, and Yield Advantage Over the Muni Rate so you can compare the impact before choosing a next step. Use it to compare long-term value, tax impact, risk, time horizon, and contribution choices.

SWReviewed by SwitchWize Research Desk · Last reviewed July 20, 2026
Tax-Equivalent Yield
4.61%
Tax-Equivalent Yield
4.61%
Combined Tax Rate
24.00%
Yield Advantage Over the Muni Rate
1.11%
Diagnostic

A 3.50% muni yield is equivalent to a 4.61% taxable bond yield at your 24.00% combined tax rate.

A taxable bond needs to clear 4.61% before it out-earns this muni on an after-tax basis.

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What to do next

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Your action plan
  1. 1

    Review the risk level and primary pressure point

    Estimate tax-equivalent yield using entered tax assumptions for the taxable comparator.

  2. 2

    Check the assumptions before using the result for a high-stakes decision

    Assumptions change the answer, especially when rates, taxes, or timing matter.

  3. 3

    Save the result to Money Map or use the linked next action

    Turn the result into a prioritized action instead of treating it as a one-off number.

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This is an educational estimate, not tax, legal, investment, or lending advice. Tax rules, rates, and eligibility change and depend on your full situation. Confirm with a qualified professional or the provider before acting.

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Frequently Asked Questions

Everything you need to know.

What does an example Muni Bond Tax-Equivalent Yield Calculator calculation look like?
Using this calculator's own default assumptions, a municipal bond yield of 3.5%, federal marginal tax rate of 24% and state marginal tax rate of 0% produces an estimated tax-equivalent yield of 4.6% and combined tax rate of 24.0%. Enter your own numbers above to see how it changes for your situation.
Why does my state tax rate matter for municipal bonds?
Most municipal bonds are exempt from federal tax but not state tax, unless they're issued in your home state, in which case both taxes are avoided. If you buy an out-of-state muni, you still pay your state tax on it, so the true tax benefit is smaller. The calculator accounts for whether the bond qualifies for state tax exemption to show you the real after-tax benefit.
What's the difference between tax-equivalent yield and the muni's stated yield?
The muni's stated yield is what you actually earn. The tax-equivalent yield is what a taxable bond would need to pay you to leave you with the same amount after taxes. The gap between them shows the tax advantage of the muni; the larger your tax rate, the bigger that advantage.
Is the Muni Bond Tax-Equivalent Yield Calculator free to use?
Yes. SwitchWize calculators are free, and you do not need an account to run scenarios or view the result.
Does using the Muni Bond Tax-Equivalent Yield Calculator affect my credit score?
No. Using a calculator does not trigger a credit check. A credit impact can occur only if you apply directly with a lender, card issuer, or provider.
Are the results personalized financial advice?
No. Calculator outputs are educational estimates based on the inputs you enter. Review assumptions and confirm terms directly with providers before making a financial decision.
What should I do after seeing the result?
Use the recommendation module on this page to compare brokerage accounts, or run Money Map to compare this investing & retirement decision with your other opportunities.
How does SwitchWize choose related offers?
Related offers are matched by the calculator surface (brokerage) and ranked using SwitchWize data such as rate, fees, trust signals, product fit, and switching friction. Paid relationships do not change organic ranking order.
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Rate and offer data is reviewed on a recurring cadence and every offer module shows review context or links to the methodology and disclosure pages.
Where can I see the ranking methodology?
The SwitchWize methodology page explains how rate freshness, editorial review, affiliate disclosure, and category ranking factors work.
Can Money Map use this result?
Yes. Money Map is the broader diagnostic path: it compares savings, mortgage, cards, and debt so you can see whether this calculator result is your highest-impact next move.

Why This Matters

Municipal bonds pay interest free from federal income tax, and often state tax too, making them valuable for high-income investors. However, you can only decide if a muni is truly better than a taxable alternative by converting both to the same tax basis. This calculator shows what a taxable bond would need to pay you to equal your muni's purchasing power after taxes.

How to Use It

  1. 1Enter the yield of the municipal bond you're considering.
  2. 2Enter your federal marginal tax rate based on your tax bracket.
  3. 3Enter your state marginal tax rate if you live in a state with income tax and the muni is issued in your state.
  4. 4Indicate whether you're subject to the 3.8% Net Investment Income Tax, which applies to certain high-income investors.
  5. 5Review the combined tax rate, the tax-equivalent yield a taxable bond would need to match, and how much extra yield the muni provides at your tax level.
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