Morgan Stanley, a major global investment bank, has issued a cautionary note on the regional banking sector, warning that rising deposit costs could squeeze profits over the next couple of years. The firm cut its 2027 earnings-per-share (EPS) estimates for regional banks by roughly 1% and downgraded two lenders—Prosperity Bancshares and Truist Financial—citing intensifying competition for customer deposits in key markets like Texas and the Southeast.
What's Driving the Concern?
Banks make money primarily from the spread between what they earn on loans and what they pay for funding, mostly customer deposits. When deposit costs rise faster than loan yields, that spread—known as net interest margin—narrows, eating into profits. Morgan Stanley's analysts argue that this dynamic is now at risk in parts of the U.S. where big banks are battling for depositors.
The firm found that promotional certificate of deposit (CD) rates are already 10 to 45 basis points higher in the Southeast, Texas, and the Midwest compared to the Northeast. A basis point is one-hundredth of a percentage point, so a 45-basis-point difference means a bank in Texas might be paying nearly half a percentage point more on a CD than a bank in New York. That gap may widen as competition intensifies.
Morgan Stanley expects the pressure to build in the second half of 2026, as the interest-rate outlook becomes more uncertain. Banks often have to raise savings and CD rates quickly to prevent customers from moving their money elsewhere, while many loans—like fixed-rate mortgages or business loans—reprice more slowly. This timing mismatch can squeeze net interest margins even if the Federal Reserve holds rates steady.
Why Prosperity and Truist Are in the Spotlight
Prosperity Bancshares, based in Texas, and Truist Financial, headquartered in North Carolina, are both heavily exposed to the regions where deposit competition is hottest. Texas and the Southeast have seen strong population and business growth, attracting larger national banks that are willing to offer higher rates to win deposits. For regional players, this means either matching those rates and accepting lower margins, or losing deposits to competitors.
Morgan Stanley downgraded both stocks, arguing that their funding costs are likely to rise faster than their loan books can adjust. The firm's EPS cut of about 1% across its regional coverage may seem modest, but it signals that the earnings outlook is becoming more fragile in a sector already under pressure from higher regulatory costs and slower loan growth.
What It Means for Investors
For everyday investors, this analysis highlights a key risk in regional bank stocks: deposit pricing may look like a small line item, but when competition forces it higher, it can quickly erode profitability. If a bank's funding costs rise faster than the yield on its loan portfolio, profit margins narrow, and even small estimate cuts can lead to valuation pressure.
Investors should watch for signs of local “rate wars” in markets like Texas and the Southeast. Banks with large deposit footprints in these regions may see their earnings become more sensitive to local competition than to broad economic growth. That makes future earnings harder to predict and could lead to greater stock price volatility.
Morgan Stanley's note also underscores a broader theme: the regional banking sector is still adjusting to a higher-for-longer interest rate environment. While larger banks have more diversified funding sources, regional lenders rely more heavily on customer deposits, making them vulnerable to shifts in deposit costs. This is a trend investors should monitor closely, especially if the Federal Reserve's next moves create more uncertainty around interest rates.
Looking Ahead
Morgan Stanley's downgrades of Prosperity and Truist are a reminder that even in a stable economy, regional banks face unique challenges. The next few quarters will show whether these lenders can manage deposit costs without sacrificing loan growth. For now, the message is clear: in the battle for deposits, the cost of winning may be higher than expected.
