The interest paid on most corporate bonds is considered investment income, and it's taxed. To encourage investors to lend money to cities, towns, and states to pay for public projects — like schools, highways, and water systems — Congress exempts municipal bond interest from federal income taxes, although interest from some of these bonds may be subject to the alternative minimum tax (AMT).

There are more than 1.4 million municipal bonds in the US marketplace.
If you are considering a corporate bond and a municipal bond with the same rating that both paid 4% interest, the obvious choice would be the tax-exempt municipal bond. But the choice is seldom that simple. High-rated municipal bonds usually pay at a lower rate than corporate bonds, precisely because they have a tax advantage. Thus, municipal bonds, commonly called munis, usually appeal most to investors in the highest tax brackets, where the tax exemption can provide the biggest tax savings.

In most states, municipal bond interest is also exempt from state tax (and city tax where it applies) for investors who live in the state where the bond is issued. An Ohioan, for example, would pay no Ohio income tax on interest earned on a Cincinnati bond. But someone from Kentucky who bought the Cincinnati bond might have to pay Kentucky tax on the income. Neither investor, however, would pay federal tax on the interest.
 
 
READING MUNI STATISTICS
There are hundreds of thousands of munis in the market. This illustration provides price information for some of the largest bonds that are being actively traded.

1. The name of the issuing municipal government or government agency is listed, along with a series number, if it applies.

2. Coupon is the interest rate the bond pays, given as a percentage of par value. The bond issued by Denver School District #1 pays 5% of par value in interest, or $50 per $1,000.

3. Mat is short for maturity, the date the bond matures and will be paid off. The first Alameda, California, bond in the chart comes due on October 1, 2025.

Munis are often long-term bonds, with maturities of 20 to 40 years. All of the bonds in this list mature between 2019 and 2038.


4. Price is the amount the bond sold for in the secondary market at the end of the previous trading day, given as a percentage of par.

5. Chg, short for change, is the difference between the price quoted here and the previous day's closing price. It is quoted in fractions of a point, just as corporate bonds are, with each 1/8 equal to $1.25. The price of Alaska International Airports was up 1/4 of a point, or $2.50. So if the price here is $975, the previous one was $973.50.

6. Bid yld, for bid yield, is the rate of return. It's calculated based on the interest rate, the amount you would pay for the bond, its redemption value, and the time remaining until it matures.
 
Municipal Bond Index, Merrill Lynch Muni Master
MUNICIPAL BOND INDEXES
Each week The Wall Street Journal prints a Municipal Bond Index of the average interest issuers would have to pay to sell investment quality long-term bonds. In the week shown here, for example, the average interest was down 0.05% from the week before, to 4.77%.

Specific figures are given for the two main categories of municipal bonds.

Revenue bonds are backed by the revenues a specific project or agency generates. New York State Thruway revenue bonds, for example, are repaid by the money collected from tolls. General obligation bonds are backed by the full faith and credit, meaning the taxing power, of the issuer. Because revenue bonds generally have longer terms and are somewhat riskier, they pay slightly higher rates overall.


BOND OFFERINGS
When states, cities, or towns want to offer new bonds, there are two ways to get them to market. They can negotiate an arrangement with a securities firm to underwrite the bond, or they can ask for competitive bids.

A competitive bid means the issuer works with the lowest bidder to sell the bonds. A negotiated agreement takes other factors into account.

Most offerings — up to 80% — are negotiated. The main advantage is a guaranteed presale. The potential problems are the opportunity for manipulating the deal to the advantage of the underwriter at the expense of the taxpayer, who foots the interest bills, and the possibility of political kickbacks. Competitive bids are free of those problems, but may rule out developing a strong working relationship that could benefit the issuer and the public.

 

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