Tax-Equivalent Yield (2026)

Compare bonds on after-tax terms

A 3.5% municipal bond is not directly comparable to a 4.5% corporate bond if you owe federal and state tax on corporate interest. Tax-equivalent yield translates the muni into the taxable yield you would need to earn the same after-tax return. Without that conversion, conservative investors systematically overpay for taxable bonds in high brackets.

Enter muni yield, federal marginal rate, state rate, and whether state tax is deductible federally. Output shows taxable-equivalent yield for 2026 planning.

Formula in plain language

Taxable-equivalent yield ≈ muni yield ÷ (1 − combined marginal tax rate on taxable interest). Example: 3% muni, 32% federal + 5% state net ≈ 3% ÷ (1 − 0.37) ≈ 4.76% taxable needed.

2026 bracket context

Marginal ordinary brackets top out at 37% federally (Rev. Proc. 2025-32). State rates vary—use the state income tax calculator or state tax comparison for residency assumptions.

How to use the calculator

Step 1 — Enter muni yield

Current yield to maturity or yield to call you are comparing.

Step 2 — Enter marginal rates

Federal ordinary rate on interest; state rate with in-state exemption if applicable.

Step 3 — Compare to taxable offering

If corporate bond yield exceeds taxable-equivalent yield, taxable may win after tax; if below, muni wins.

Qualified dividend comparison caveat

Stock dividends may use preferential rates—not ordinary rates. Compare dividend yields with the dividend tax calculator, not this muni tool.

AMT munis

Some private activity bonds are tax-exempt for regular tax but AMT preference items. High-income filers near AMT should model the AMT calculator before loading up AMT munis.

Worked example

4.0% in-state muni, 24% federal marginal, 6% state with no federal deduction simplification → combined 30% → taxable equivalent ≈ 5.71%. A 5.2% corporate bond loses after tax; 6.0% corporate wins.

Investment interest and bond ladders

Margin-financed bond portfolios face investment interest limits. See investment interest expense calculator.

Common mistakes

• Using average tax rate instead of marginal rate
• Ignoring state tax on out-of-state munis
• Comparing muni yield to stock dividend yield without rate differences
• Forgetting AMT on specific munis

Related tools

Dividends: dividend tax calculator. Capital gains: capital gains tax calculator. State rates: state tax ranking.

After-tax yield in retirement accounts

Muni tax equivalence matters in taxable brokerage accounts—not inside traditional IRAs where all withdrawals are ordinary income regardless of muni holding. Roth IRA holds tax-free growth; muni placement there wastes muni federal exemption—asset location strategy extends beyond this calculator.

AMT and private activity munis

Private activity bond interest exempt for regular tax may be AMT preference—high-income muni investors run AMT calculator alongside TEY comparison. Build America Bonds and other taxable municipal structures compare directly without TEY conversion.

State tax exempt on in-state munis boosts TEY further—enter combined marginal rate reflecting state exemption on muni interest only.

Insurance company and bank regulatory constraints may limit muni ownership for individuals unrelated to TEY but affecting asset allocation—TEY is necessary not sufficient for portfolio choice.

Reading your results for tax equivalent yield

The interactive panel above shows a transparent calculation trace in cents—use it to sanity-check inputs before you rely on any number for decisions. Tax software at filing time may differ when every credit, limitation, and state conformity rule is applied in full. Treat output here as structured planning math aligned to 2026 federal reference data where noted, not as e-file output or professional advice.

When your situation includes items this specialized tool simplifies—multiple entities, prior-year carryforwards, treaty elections, or state nonconformity—layer those facts manually or with a preparer. The goal is to narrow uncertainty enough to ask better questions, not to eliminate the need for review when dollars are material.

Recordkeeping that survives scrutiny

Keep source documents (forms, statements, logs, confirmations) that support every input you typed. IRS and state audits often start from third-party reporting; your job is to reconcile 1099s, K-1s, and broker exports to the story you file. Digital backups with dates beat reconstructed spreadsheets created after an notice arrives.

For tax equivalent yield, retain worksheets year to year when carryforwards exist—loss carryovers, credit carryforwards, passive loss suspensions, and basis schedules die silently if you change preparers and lose history.

Related tools on this site

Dividends: dividend tax calculator. State rates: state tax comparison.

2026 federal brackets and payroll context

Ordinary income tax brackets and standard deductions for 2026 follow IRS Rev. Proc. 2025-32 ($16,100 single / $32,200 joint standard deduction; seven marginal rates from 10% to 37%). Social Security tax applies at 6.2% on wages up to the $184,500 wage base; Medicare continues at 1.45% with Additional Medicare Tax above threshold wages. These layers stack independently from specialized rules modeled in this tax equivalent yield tool—run the federal income tax calculator when you need the full return picture.

Quarterly estimated tax may be required when withholding does not cover liability—see the quarterly estimated tax calculator. Year-end refund or balance due comparisons belong in the tax refund estimator once withholding and payments are known.

Before filing season

Reconcile this tax equivalent yield calculator estimate against draft Form 1040 lines and attached schedules your software produces. Look for mismatches in basis, carryforwards, and state add-backs—the first pass with a specialized calculator often misses secondary limits that full return software catches. Update inputs when you receive final 1099s, K-1s, and corrected broker statements; January revisions are normal.

If results imply large balance due, adjust withholding or estimated payments before December 31 when possible—penalties accrue on underpayment even when you file timely in April. If results imply large refund, you may be over-withholding or overpaying estimates; tune W-4 or voucher amounts for better cash flow without chasing refunds as a savings strategy.

State returns often piggyback federal logic but diverge on conformity items. Re-run state tools when federal inputs change materially so you do not pay state estimates based on federal-only planning from this tax equivalent yield calculator page.

Sources and methodology

Federal brackets from Rev. Proc. 2025-32. State rates user-entered. Standard TEY formula; educational—not investment advice.