Municipal bond yields have climbed to levels that would have seemed implausible just a few years ago, and the gap between what these bonds pay and what savers earn in a standard bank account has widened to one of the largest spreads in recent memory.
For households sitting on idle cash, that spread is hard to overlook.
Investment-grade muni bonds with 10-year maturities are currently yielding in the low-to-mid 3% range nationally, with longer-dated and lower-rated issues pushing past 4% in several states.
Compare that to the national average savings account rate, which still hovers well under 1% at many of the biggest banks.
The reason yields jumped is simple arithmetic.
Bond prices fall when interest rates rise, and the Federal Reserve's long campaign against inflation pushed rates to their highest level in more than two decades.
As older bonds matured and were replaced with newer, higher-coupon debt, the entire muni market repriced upward for buyers.
What makes munis unusual is the tax treatment.
Interest on most municipal bonds is exempt from federal income tax, and if you buy bonds issued by your own state, the interest is often exempt from state and local taxes too.
That exemption is why a 3.5% muni yield can beat a 4.5% taxable corporate bond for someone in the 24% federal bracket, and the advantage grows the higher your tax bracket climbs.
The catch is that this benefit only pays off if you actually owe the taxes being avoided.
Retirees in low brackets, or anyone holding munis inside a tax-advantaged retirement account, get little or no advantage from the exemption.
Financial planners generally steer munis toward taxable brokerage accounts for that reason.
There are other wrinkles worth knowing before you move money.
Individual muni bonds typically trade in $5,000 increments, which prices out many small investors.
Bond funds and ETFs solve that problem but introduce interest-rate risk: if rates rise further, the fund's share price can fall even while it pays you income.
And muni bonds are not risk-free — issuers can and do run into trouble, particularly smaller municipalities with thin reserves.
Defaults remain rare in the investment-grade muni universe, but they are not zero.
The 2010s saw high-profile bankruptcies in places like Detroit and Puerto Rico, and investors who reached for the highest yields in those markets learned an expensive lesson about credit risk.
For anyone evaluating the trade-off, the practical questions are straightforward.
How much interest-rate risk can you stomach if you need to sell before maturity?
Answering those three questions honestly will tell you more than any headline yield figure.
One more consideration: the muni market has historically been dominated by individual investors rather than institutions, which means pricing can be less efficient.
Two brokers can quote noticeably different prices for the same bond on the same day, so shopping around is not optional — it is the difference between a good yield and a mediocre one.
Municipal bonds will not make anyone rich overnight, and they should not be anyone's entire portfolio.
But for higher-earning households with taxable accounts and a need for reliable income, the current yield environment offers something that has been scarce for years: a genuinely competitive alternative to stocks and CDs that comes with a built-in tax break.
If the Fed continues cutting rates, newly issued munis will carry lower coupons, and today's yields will look like a relic.
Final Thoughts
Investors who have been waiting for a clear signal may find that the math already made the decision for them.