General obligation bonds and revenue bonds are the two main categories of municipal debt, and the difference between GO bonds and revenue bonds comes down to one thing: GO bonds are backed by the issuing government’s taxing power, while revenue bonds are repaid only from the income generated by the specific project they financed. That single distinction shapes who approves the bonds, how risky they are, how they behave in bankruptcy, and how much interest they pay. Both types generally deliver interest that is exempt from federal income tax.
How Each Type Gets Repaid
A GO bond is repaid from the issuing government’s general revenues, most often property taxes. The government pledges its “full faith, credit and taxing power” behind the debt, which puts the entire tax base on the hook.1Municipal Securities Rulemaking Board. Sources of Repayment When a city issues GO bonds to build a school, every property owner in the district helps pay for it through their tax bill, whether or not their kids attend. Sales and income tax receipts can also be tapped depending on state law, but property taxes do most of the work at the local level.
Revenue bonds carry a narrower promise. The issuer pledges only the income produced by the facility or system the bonds paid for. Tolls from a bridge, landing fees at an airport, water bills from a utility — those revenues flow directly to bondholders. If the project underperforms, bondholders cannot force the government to raise general taxes to cover the shortfall.1Municipal Securities Rulemaking Board. Sources of Repayment The project either generates enough cash or it does not, and that risk sits with the investor.
One hybrid worth knowing: a “double-barreled” bond is secured by both a specific revenue stream and the issuing government’s full faith and credit.1Municipal Securities Rulemaking Board. Sources of Repayment It sits between the two categories on risk.
What Each Type Funds
GO bonds pay for public facilities that don’t produce their own income. Schools, libraries, government offices, police and fire stations, parks. Everyone uses them and there’s no meter running, so general taxes have to fund the debt.2Municipal Securities Rulemaking Board. Municipal Bond Basics
Revenue bonds fund enterprise-style projects that charge users directly: airports, toll roads, public hospitals, water and sewer systems, electric utilities, public universities, convention centers.3National Association of Bond Lawyers. Revenue Bond The reasoning is that the drivers who use the toll road and the residents who flush the toilets should pay for the infrastructure, rather than taxpayers in general. This also walks the project’s finances off the government’s main balance sheet.
Who Has to Approve Them
Because a GO bond creates a future tax obligation, most jurisdictions require voter approval before the government can issue one. A bond measure goes on the ballot, and taxpayers vote it up or down. Some states demand a simple majority; others require a supermajority. California, for instance, has historically required a two-thirds majority for local GO bonds. The specific threshold is set by state constitutional and statutory law.
Revenue bonds usually skip the ballot. Since they pledge project income rather than tax dollars, a governing board or independent authority can authorize them through a resolution after reviewing whether projected revenues can support the debt.4National Association of Bond Lawyers. Bond Resolution/Ordinance A port authority, utility district, or hospital board approves the financing based on feasibility studies. That lets projects move on their own timeline instead of waiting for an election.
Default Risk and Credit Ratings
Rating agencies look at these bonds through different lenses. A GO bond is rated on the overall financial health of the city, county, or state: tax base, economic diversity, budget management, existing debt load. A revenue bond is rated on the specific project — demand projections, management, pricing flexibility, and the strength of the bond covenants.
The default track record reflects that split. According to Moody’s data covering 1970 through 2022, no Moody’s-rated GO bond experienced a material payment default during the entire period. Water and sewer revenue bonds share that clean record. The defaults that did occur clustered in enterprise revenue bonds — certain hospitals, housing finance agencies, standalone projects — where the underlying business ran into trouble. The 10-year cumulative default rate for investment-grade municipal bonds was 0.07% overall, but when GO and water/sewer bonds are excluded from the pool, the rate among remaining revenue bonds climbs to roughly 0.29%.
Even that higher number sits well below corporate bond default rates. Revenue bonds are not risky in absolute terms; the taxing power behind GO bonds simply provides a certainty that project pledges cannot match. Revenue bonds tied to essential-service monopolies like water, sewer, and electric utilities behave much more like GO bonds because customers have nowhere else to go.
Behind the GO bond’s strength is a legal enforcement mechanism worth knowing. If a municipality refuses to levy taxes sufficient to pay debt service, a court can compel it through a writ of mandamus.1Municipal Securities Rulemaking Board. Sources of Repayment The exact strength of the pledge does vary by state, since not every jurisdiction gives bondholders identical priority or identical remedies.
What Happens in Municipal Bankruptcy
This is where the conventional wisdom flips. Chapter 9 bankruptcy, which is only available to municipalities, treats the two bond types very differently, and GO bondholders don’t necessarily come out ahead.
In Chapter 9, GO bonds become general unsecured obligations. The municipality is not required to keep making principal and interest payments during the case, and GO obligations can be restructured or reduced under the plan of adjustment.5United States Courts. Chapter 9 – Bankruptcy Basics
Revenue bonds get a statutory protection that surprises most investors. Under federal bankruptcy law, pledged special revenues must continue flowing to revenue bondholders during the case. The automatic stay that halts payments to most creditors does not stop special revenues from being applied to secured revenue bond debt, provided the pledge is structured to meet the statutory requirements.5United States Courts. Chapter 9 – Bankruptcy Basics The one qualification: operating expenses of the project or system get paid before revenue bondholders, consistent with the typical net revenue pledge.
Outside of bankruptcy, GO bonds are unquestionably the stronger instrument because the taxing power stands behind them. Inside a Chapter 9 case, revenue bondholders may fare better because the cash keeps flowing while GO bondholders line up as general creditors. Detroit’s 2013 bankruptcy played this out: GO bondholders took significant losses, and certain revenue bond holders kept receiving payments.
Federal Tax Treatment
Interest on both GO bonds and revenue bonds is generally excluded from federal income tax. Section 103 of the Internal Revenue Code provides that gross income does not include interest on any state or local bond, subject to certain exceptions.6Office of the Law Revision Counsel. 26 USC 103 – Interest on State and Local Bonds Many states also exempt interest on bonds issued within their borders from state income tax, which creates a double tax benefit for in-state investors.
That tax exemption is the reason municipal bonds pay lower interest rates than comparable corporate or Treasury debt. An investor in a high bracket can end up with more after-tax income from a 3.5% tax-exempt muni than from a 5% taxable corporate bond.
Three main exceptions can strip the tax exemption:
- Private activity bonds. If a bond primarily benefits private users rather than the public at large, it may be classified as a private activity bond and lose its exemption unless it qualifies under specific categories such as airports, affordable housing, or exempt facilities.6Office of the Law Revision Counsel. 26 USC 103 – Interest on State and Local Bonds
- Alternative minimum tax exposure. Interest on a private activity bond that is technically exempt from regular income tax can still be a preference item under the AMT. With many Tax Cuts and Jobs Act provisions set to sunset in 2026, more taxpayers could become subject to the AMT and see a higher effective tax burden on this interest.2Municipal Securities Rulemaking Board. Municipal Bond Basics
- Arbitrage bonds. Issuers that invest bond proceeds at a yield materially higher than the bond’s own yield must rebate the excess to the U.S. Treasury. Failure to comply can cost the bonds their tax exemption entirely.7Internal Revenue Service. Complying with Arbitrage Requirements: A Guide for Issuers of Tax-Exempt Bonds
These exceptions apply to both GO and revenue bonds, though private activity issues come up more often with revenue bonds because those projects are more likely to involve substantial private use.
Yield and Choosing Between Them
GO bonds generally yield less because the taxing power behind them makes default rare. Revenue bonds pay somewhat more to compensate for the narrower pledge. Spreads move with market conditions, but investors typically pick up 25 to 75 additional basis points on revenue bonds versus GO bonds of comparable maturity and credit. That extra yield rewards the additional homework: reading traffic studies, patient volume projections, or utility rate-setting politics rather than just sizing up a city’s tax base.
For a conservative investor who wants steady tax-exempt income without much research, highly rated GO bonds and essential-service revenue bonds (water, sewer, electric) come as close to a sure bet as fixed income offers. For an investor willing to dig into a specific project’s finances, revenue bonds offer both higher yields and the structural quirk of continued payment during bankruptcy. The right choice is less about which type is “better” in the abstract and more about how much diligence you’re prepared to do and whether the extra yield is worth it.