Municipal bonds are going down primarily because interest rates have climbed, which forces the price of older, lower-coupon bonds lower so their yields can match what newly issued bonds now pay. Inflation, shifts in federal tax policy, credit downgrades at the state and local level, and heavy selling from bond funds all push in the same direction, and when they hit together the declines compound.
Interest Rates Are the Main Driver
Bond prices and interest rates move in opposite directions. When rates rise, the fixed coupon on an existing bond looks less attractive next to freshly issued bonds paying more, so sellers have to discount the price to move it. The Federal Reserve’s target for the federal funds rate sits at 3.50% to 3.75% as of January 2026, and that rate anchors borrowing costs throughout the economy.1Federal Reserve. Economy at a Glance – Policy Rate Every time the Fed signals a higher-for-longer stance, the entire municipal market reprices almost instantly, whether or not anyone is actively trying to sell.
Picture a bond paying a 3% coupon in a market where similar new bonds yield 5%. Nobody pays face value for the older bond. The seller has to cut the price enough that the buyer’s total return — coupon plus discount — matches what a new bond would deliver.
Duration Determines How Far Prices Fall
How much a specific bond drops depends on its duration, a measure of how sensitive its price is to rate changes. As a general rule, a bond’s price moves about 1% in the opposite direction of rates for every year of duration. A bond with five years of duration loses roughly 5% of its value when rates rise a full point; a bond with fifteen years of duration loses closer to 15%. Long-dated holdings take the hardest hit.
Callable Bonds Cap the Recovery
Many municipal bonds let the issuer repay principal early, typically after ten years, and refinance at a lower rate. When rates fall, issuers exercise that option and hand back your principal at the worst possible moment for reinvestment.2MSRB. Municipal Bond Investment Risks That means the upside during a rate rally is capped, while the downside during a rate selloff is not.
Inflation Is Eating Into Real Returns
Even when rates hold steady, inflation cuts into what a fixed coupon is actually worth. The Consumer Price Index rose 2.4% over the twelve months ending January 2026.3Bureau of Labor Statistics. Consumer Prices Up 2.4 Percent Over the Year Ended January 2026 A bond paying 3% while prices rise 2.4% delivers about 0.6% in real purchasing power. If inflation moves above the coupon rate, the holder loses ground in real terms each year.
When investors expect inflation to stay elevated, they sell fixed-income holdings and shift to equities, commodities, or inflation-protected securities. That selling drives municipal bond prices lower until yields climb enough to compensate new buyers for the expected loss of purchasing power.
Tax Policy Changes Weaken the Muni Advantage
The core reason many investors accept lower stated yields on municipal bonds is the federal tax exemption. Interest on bonds issued by state and local governments is generally excluded from gross income under federal law.4Office of the Law Revision Counsel. 26 USC 103 – Interest on State and Local Bonds The higher a buyer’s marginal tax bracket, the more that exemption is worth. When Congress lowers tax rates, or even signals it might, the exemption becomes less valuable and demand for munis weakens. Prices fall until yields rise enough to attract buyers on the new math.
Corporate demand shifts the same way. Banks and insurance companies have historically held large muni portfolios because the tax exemption offset their corporate liability. When the corporate rate drops, those institutions trim allocations, which adds to the selling pressure.
The Tax Cuts and Jobs Act of 2017 also eliminated the ability for municipalities to issue tax-exempt advance refunding bonds, a tool issuers had used to refinance outstanding debt at lower rates. That restriction remains in effect through at least 2027 and removed one steady source of demand for outstanding bonds.
Credit Downgrades and Issuer Stress
The financial condition of the government behind a bond feeds directly into its price. Rating agencies assess the likelihood that a state, city, or county will make its scheduled payments, assigning grades from AAA down through lower tiers.5MSRB. Credit Rating Basics for Municipal Bond Investors A downgrade signals weakening ability or willingness to pay, often tied to falling tax revenues, pension shortfalls, or persistent deficits. Investors respond by demanding a higher yield, which pushes the price down.
The size of the drop depends on the bond structure. General obligation bonds are backed by the issuer’s taxing power, sometimes without limit. Revenue bonds depend on income from a specific source such as highway tolls or utility fees. If that revenue stream falters, holders may have no claim against the issuer itself.6U.S. Securities and Exchange Commission. What Are Municipal Bonds Revenue bonds tied to weak projects tend to fall further during fiscal stress than GO bonds backed by a diversified tax base.
In extreme cases, a municipality can file for Chapter 9 bankruptcy to reorganize debts under court supervision. Chapter 9 eligibility is stricter than other forms of bankruptcy, and courts routinely reject filings that don’t meet the threshold.7Legal Information Institute. Chapter 9 Bankruptcy Actual defaults remain rare, but even the perception of higher default risk can trigger selling across bonds from the affected region.
Fund Outflows Force Selling Regardless of Value
The balance between new bonds coming to market and buyers ready to absorb them shapes prices day to day. State and local governments often cluster issuance near the end of a fiscal year to finalize project funding, and when new supply outpaces demand, issuers must offer higher yields, which means lower prices.
Municipal bond mutual funds and ETFs amplify these swings. When shareholders pull money out, fund managers have to sell bonds to raise cash for redemptions, whether the timing is good or not. That forced selling floods the market with supply that has nothing to do with the credit quality of what’s being sold. If few buyers step in, prices for high-quality bonds drop alongside weaker ones.2MSRB. Municipal Bond Investment Risks The spillover can drag down bonds that face no real credit or rate problem at all.
The De Minimis Rule Accelerates Declines on Discounted Bonds
Once a bond is already trading at a discount, a tax rule can turn the decline into a cliff. Federal law sets a threshold, called the de minimis amount, at one-quarter of one percent of the bond’s face value for each full year remaining until maturity.8Office of the Law Revision Counsel. 26 USC 1278 – Definitions and Special Rules If the discount stays below that threshold, the gain at maturity is a capital gain. Once the discount exceeds it, the entire gain is taxed as ordinary income.
Take a $10,000 bond with 10 years to maturity. Its de minimis threshold is $250. Buy it for $9,800 and the $200 gain is a capital gain. Buy it for $9,700 and the full $300 is ordinary income. As a bond’s price nears that line, tax-sensitive investors and mutual funds stop buying or actively sell, pulling demand at exactly the moment the bond needs it. That’s how a moderate rate-driven decline can turn into a sharper one.
What This Means If You’re Holding
The paper losses showing up on a statement reflect current market prices, not what the bond will pay if held to maturity. Assuming the issuer continues to pay, a bond bought at par still returns face value at maturity along with its scheduled coupons. The people who lock in losses are those who need to sell during the decline. Supply-and-demand imbalances driven by fund outflows tend to be temporary, and prices for otherwise sound bonds often recover once forced selling subsides. Losses tied to rising rates take longer to reverse and may not fully recover until the bond nears maturity. Credit downgrades sit somewhere in between: bonds can recover if the issuer’s finances stabilize, but a serious deterioration can permanently impair value.