Calculate the taxable equivalent yield of municipal bonds, compare muni vs taxable bond income after taxes, and find your optimal fixed-income allocation.
Municipal bonds offer income that is exempt from federal income tax and often state tax for in-state bonds. This tax advantage means a muni bond yielding 4% can be equivalent to a taxable bond yielding 5.5% or more, depending on your tax bracket. The higher your marginal rate, the more valuable the tax exemption becomes.
The tax-equivalent yield (TEY) converts a muni bond's tax-free yield into the yield a taxable bond would need to offer to produce the same after-tax income. This is essential for comparing municipal bonds against corporate bonds, treasuries, CDs, and other taxable fixed-income investments — you cannot compare yields directly because they're taxed differently.
This calculator computes your exact tax-equivalent yield using both federal and state tax rates, shows a bracket-by-bracket comparison, and determines whether municipal or taxable bonds produce more after-tax income at your specific tax rate. Check the example with realistic values before reporting.
Comparing a 4% muni yield to a 5% taxable yield by looking at the numbers alone is misleading — the muni may actually win after taxes. This calculator reveals the true comparison by converting to tax-equivalent yields. Keep these notes focused on your operational context. Tie the context to the calculator’s intended domain. Use this clarification to avoid ambiguous interpretation.
Tax-Equivalent Yield = Muni Yield / (1 − Combined Tax Rate) Combined Rate (state-exempt) = Federal Rate + State Rate × (1 − Federal Rate) Combined Rate (not state-exempt) = Federal Rate only After-Tax Taxable Income = Taxable Yield × (1 − Combined Rate)
Result: TEY = 5.882%
A 4.0% muni bond for someone in the 32% federal + 5% state bracket has a combined rate of 35.4%. TEY = 4.0% / (1 − 0.354) = 6.19%. Any taxable bond would need to yield over 6.19% to beat this muni after taxes.
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TEY is the yield a taxable bond needs to offer to match a muni bond's after-tax income. It accounts for the fact that muni bond interest is federal tax-exempt.
Most municipal bonds are exempt from federal income tax. However, private activity bonds may be subject to AMT. State tax exemption usually only applies to in-state bonds.
Munis generally make sense for investors in the 24%+ federal bracket. Below that, taxable bonds often offer better after-tax yields. The higher your bracket, the bigger the muni advantage.
Buying bonds from your home state typically exempt interest from state tax too. This "double tax-free" status significantly increases TEY in high-tax states like California, New York, and New Jersey.
No — holding munis in an IRA or 401(k) wastes the tax exemption since these accounts are already tax-advantaged. Hold munis in taxable accounts and taxable bonds in tax-advantaged accounts.
Credit risk (municipal defaults, though rare), interest rate risk (price drops when rates rise), and liquidity risk (munis trade less frequently than corporates). Check credit ratings before investing.