Yield Comparisons
Choose the right after-tax measure by separating income yield, total return, tax-exempt yield, and taxable-account timing.
Compare taxable and tax-exempt income by separating the security, account wrapper, yield measure, tax rule, and investment risk.
Tax-exempt, taxable, and after-tax yield analysis compares what an investment states before tax with what an investor may retain after tax. A sound comparison separates five layers: the security, the type of income it produces, the account holding it, the yield or return measure, and the tax rules applicable to the investor.
This distinction matters because a tax-exempt bond can still have credit and price risk, a taxable account can hold tax-exempt interest, and a tax-advantaged account can hold a taxable security without creating the same annual investor-level tax result. The labels describe different parts of the analysis.
| Layer | Question to answer | Example evidence |
|---|---|---|
| Security | What instrument is owned and what cash flows does it promise? | Official statement, prospectus, confirmation, or account record |
| Income | Is the amount interest, a dividend, a capital-gain distribution, original issue discount, market discount, or sale gain? | Tax form, issuer notice, or fund distribution detail |
| Account | Is the asset held in a taxable, tax-deferred, or other tax-advantaged wrapper? | Account agreement and plan documents |
| Measure | Is the figure coupon, current yield, yield to maturity, yield to worst, distribution yield, or total return? | Quote methodology and valuation date |
| Tax rule | Which tax, year, jurisdiction, and taxpayer assumptions apply? | Current official guidance and tax records |
Skipping any layer can produce a precise-looking but misleading result. For example, multiplying a coupon by one minus a tax rate does not capture a premium purchase, a call before maturity, a taxable market discount, or a loss on sale.
The After-Tax and Taxable Yield Comparisons section covers after-tax yield, after-tax return, tax-exempt yield, and taxable accounts. Use it when the question is how to put investments on a comparable after-tax basis.
The Tax-Exempt Income and Securities section covers the meaning and boundaries of tax-exempt status. Use it when the question is whether a specific income item or security qualifies for an identified exemption.
Assume a taxable bond yields 5.50% and a municipal bond yields 3.90%. Applying an illustrative 30% rate to the taxable interest produces a simplified after-tax yield of 3.85% for the taxable bond. The municipal bond’s stated yield is slightly higher under that one assumption.
The comparison is not finished. The analyst still needs to verify:
A difference of 5 basis points should not be treated as decisive when omitted costs or risks can be larger.
This section is for financial education. It does not determine a filing position, calculate a specific investor’s tax, or recommend an account or security. Tax and investment outcomes depend on current law, documents, and individual facts.
Choose a subsection first. Deeper term pages live inside each subsection, which keeps large topic hubs readable.
Choose the right after-tax measure by separating income yield, total return, tax-exempt yield, and taxable-account timing.
Compare tax-exempt status, exempt income and interest, tax-exempt bonds, reporting evidence, yield measures, and important limitations.