Municipal bonds, often called munis, are tax-exempt debt issued by states, cities, and other local governments to finance infrastructure and public services. Because their interest income is free from federal taxes, they are popular among high-income investors seeking yield without the tax bite. The ratio of muni yields to Treasury yields is a standard tool to gauge relative value: a higher ratio indicates munis are cheap compared to Treasuries, making them potentially attractive for buyers.
The Selloff That Made Munis Cheap Again
Municipal bonds had a bad week. It was the steepest decline in performance for municipal bonds since April 2025.
The trouble started with U.S. Treasuries. Traders began betting the Federal Reserve might raise interest rates soon, worried that inflation is not cooling off fast enough. When Treasuries fall, munis tend to follow - and they did, hard.
But here is the twist. After the selloff, those same municipal bonds suddenly looked a lot cheaper than they had in months. By the Monday following the difficult week, benchmark muni yields fell by up to four basis points by midday in New York.
A falling yield means the bond's price is rising, which sounds good. But the real story is what happened to the ratio between muni yields and Treasury yields.
It is a simple way to compare how cheap or expensive munis are relative to safer government debt. The last time it was that high, investors could pick up munis at a similar discount.
Why Cheap Bonds Attract Attention
When bonds get this cheap, people start shopping.
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Kyle Gerberding, who serves as head of trading and lead portfolio manager for Asset Preservation Advisors, put it simply: "Tax-frees are certainly more attractive than they were a week to two weeks ago." That is the kind of understated comment that means "yes, we are looking at these."
Kim Olsan, a senior portfolio manager at NewSquare Capital, stated that last week's selloff created a buying opportunity for investors and predicted that certain parts of the yield curve could see further cheapening.
There is also supply working in favor of buyers. The week after the selloff had a lighter calendar of new bonds coming to market. Less supply usually means less pressure on prices, which gives existing bonds a better chance to hold their value.
The Case for Waiting
Cheaper does not automatically mean "buy everything."
Barclays strategists led by Mikhail Foux warned against rushing in. "Ratios have already become much more attractive, but we would not rush, at least for now," they wrote. "In our view, investors should remain selective, opportunistic and focused on maintaining adequate liquidity while favoring higher-quality credits."
Translation: Yes, the prices are better. But do not throw money at anything with a tax exemption. Stick with bonds from issuers with solid finances. And keep enough cash on hand - liquidity matters when markets shift fast.
If the Fed actually raises rates, bond prices could drop further. Buying now might lock in a good yield, but it also means locking in a price that could go lower.
What It Means for Your Portfolio
For the average investor, muni bonds are not typically a headline story. But this is a moment worth paying attention to.
If you own municipal bonds already, the recent selloff hit your holdings. But the selloff also reset prices to a level that has not been seen in months. That could be an opportunity - but only if you pick the right bonds. The Barclays advice to favor higher quality and keep liquidity is a good filter.
For investors who do not own munis, this is a chance to see why they matter. Tax-free income becomes more valuable as yields rise. And when the ratio between muni and Treasury yields climbs above the recent March level, it usually signals that munis are relatively cheap compared to their history.
The bottom line: cheaper bonds do not guarantee a good buy, but they do give investors a bigger margin of safety. The trick is not to rush - let the market settle, look for quality, and keep some powder dry. If inflation fears fade, those cheap munis could look like a smart move. If they get worse, you will be glad you stayed selective.
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