Fixed Income — Municipal

Core Concepts

General Obligation (GO) Bonds

Backed by the full faith, credit, and taxing power of the issuing municipality. The issuer pledges to use any available revenue source (property tax, income tax, sales tax) to repay bondholders. GO bonds typically require voter approval and are considered safer due to the broad taxing pledge.

Revenue Bonds

Backed solely by the revenue generated from a specific project or source — toll roads (toll collections), water/sewer systems (utility fees), hospitals (patient revenue), airports (landing fees, terminal rents). Revenue bonds typically carry higher yields than GO bonds of comparable maturity and credit quality because of the narrower revenue pledge.

Tax-Equivalent Yield (TEY)

The core calculation for comparing municipal bonds to taxable alternatives:

Federal only: TEY = Muni Yield / (1 - federal_marginal_rate)

Federal + state (for in-state munis): TEY = Muni Yield / (1 - federal_rate - state_rate × (1 - federal_rate))

This converts a tax-exempt yield to the pre-tax yield a taxable bond would need to offer to match the muni's after-tax income.