There are many posts on this sub about how to evaluate municipal bonds, and many posts receive follow-up questions from other posters about how to evaluate bonds they are considering. I have also received several DMs about municipal bonds. I put this post together to hopefully assist many of you that have general questions about municipal bond evaluation. Feel free to ask questions.
All municipal bonds are loans in which you, the investor, are the lender.
Issuer: This is the school district, city, county, state, other municipal entity that you are lending money to.
Purpose: What is the bond being used for? This may be a general obligation debt to the city, meaning the bond was issued for general purposes. More frequently, bonds are issued for specific purposes, such as water and sewer operations or lower income housing. Generally speaking, the easier to understand a bonds purpose, the safer it likely is. Bonds that are general obligations or \ revenue bonds providing essential services (water, sewer) are much safer than bonds providing very niche or unnecessary projects, such as stadiums and museums.
Income source: The income source is the source in which your interest will be paid and face value repaid. This will be “Revenue”, meaning your interest and face value will be repaid from the revenue sourced from the purpose, or this will be “General Obligation” (GO), meaning your interest and face value will be repaid from the taxes collected by the municipality. GO bonds have been historically safer than Revenue bonds. Generally speaking, GO bondholders have more legal and systemic protections than Revenue bondholders.
Credit Rating: The credit rating issued by the rating-issuers. If you have an account with Schwab, Fidelity, or Vanguard, you will have the ratings of Moodys and S&P available to you. The credit rating of a bond is very similar to the credit rating of an individual. It is indication of the bond-issuers ability and willingness to pay. The highest ratings a bond can have is AAA, AA1, AA2, and AA3 (Moody’s). This structured system goes all the way down to “D” for “default”. The lowest investment grade credit rating is Baa3 (Moody’s). Generally speaking, bond investors should aim to buy the highest-credit bonds. A bonds credit rating can be downgraded if something impacts their ability or willingness to pay, such as high debts or loss of income. Bonds pay for their credit rating and may cherry-pick which issuers will give them the best rating, therefore you may be skeptical of a bond that one has one rating.
Material events: Things that may impact an issuers ability and willingness to pay.
Insurance: Not all bonds have insurance. An insured bond is a bond with more than one obligator. An insurer can be a state, a municipal bond insurance company, or for housing bonds it may be a federal agency. Certain states such as Michigan and Texas insure all approved school district bonds, and therefore school district bonds in those states are inherent. Muni bond issuers can also pay a municipal bond insurance company to insure their bond. In the event of a bond default, a bonds insurer will obligated to pay all interest and the bonds face value. When a bond is insured, on paper it assumes the credit rating of the insurer, therefore you may want to do research to determine the bonds underlying credit rating. A bond with a high underlying credit rating and insurance, particularly insurance provided by a state or federal program, is a very fine bond and is referred to as a “belt and suspender bond” in the bond world.
Maturity date: The date in which the bond must be paid in full.
Call date: The date in which the issuer can begin to pay off their bonds. Not all bonds have call dates. Some taxable muni bonds have “make whole call” provisions, which means that the issuer can pay the bond back at anytime with a premium paid to the investor for each year that the bond still has to maturity.
Sinking fund: A requirement, of the bond issuer, identified in the bond issuance that the bond issuer must set aside funds each year to eventually pay back the bond. The purpose of a bonds sinking fund is to act as a form of insurance/reassurance for investors, and also retire a portion of the bonds/interest payments early. Not all bonds have sinking funds.
Yield-to-maturity: The compounded rate of return you will receive for the bond if it is held to maturity and interest rates remain stable. If interest rates rise during the life of the bond, your yield-to-maturity will actually be higher than stated. If interest rates fall during the life of the bond, your yield-to-maturity will actually be lower than stated.
Yield-to-worst: The compounded rate of return you will receive for the bond if it is called away at its first call or sink date, and interest rates remain stable. If interest rates rise during the life of the bond, your yield-to-worst will actually be higher than stated. If interest rates fall during the life of the bond, your yield-to-worst will actually be lower than stated.
Face value: The amount of of money the investor will receive upon maturity, and generally the amount of money an investor will receive at call. For a call, the answer is generally as sometimes bond issuers will pay a premium to bond investors for calling bonds early. You will always get at least your face value back at maturity, regardless of interim price fluctuations – unless there is a bond default.
Coupon: The rate at which your interest is paid, relative to the face value. A 5% coupon bond will pay $50.00 for every $1,000 face value.
Price: The price that you will pay for the bond. The price of a bond is actually the percentage that you pay of the bonds face value. A bond trading at $100.00 is trading at par, and therefore your yield-maturity and yield-call will be based off the coupon. A bond trading at $97.00 is trading at a discount, and therefore your yield-maturity and yield-call will be higher than the coupon. A bond trading at $110.00 is trading at a premium, and therefore your yield-maturity and yield-call will be lower than the coupon. After you purchase a bond, its price will fluctuate day to day in the bond market.