Financial institution of The usa (BAC) mentioned Tuesday that first-quarter income dropped 18% from a yr in the past as a key income supply weakened, providing the most recent instance of ways even the largest banks are an increasing number of challenged through top rates of interest.Web curiosity source of revenue at Financial institution of The usa fell 3% from the year-earlier length “as larger deposit prices greater than offset larger asset yields and modest mortgage expansion,” the financial institution mentioned in a unencumber.That measure captures the adaptation between what a financial institution earns on its loans and different belongings as opposed to what it can pay out on deposits. This can be a vital contributor to income for all banks.3 different large banks — JPMorgan Chase (JPM), Wells Fargo (WFC), and Citigroup (C) — additionally disclosed demanding situations with this income supply as higher-for-longer rates of interest from the Federal Reserve proceed to force lenders to pay extra to stay their depositors.Financial institution of The usa’s inventory used to be flat in pre-market buying and selling.One signal of ways larger deposit charges are affecting Financial institution of The usa is that its non-interest bearing deposits fell 16% to $520.6 billion. Some other is the upper charge it paid on US interest-bearing deposits, which rose to two.53% within the first quarter when compared with 1.28% a yr previous.Deposit pricing force could also be emerging at Wells Fargo and Citigroup, which disclosed they’re doling out extra for that investment than a yr in the past.That force is prone to accentuate now that traders now not be expecting a charge reduce from the Fed in June, because of hotter-than-expected inflation information this previous week and a shockingly resilient financial system.Financial institution of The usa Chairman and CEO Brian Moynihan. REUTERS/Evelyn Hockstein (REUTERS / Reuters)One vibrant spot for Financial institution of The usa used to be its Wall Side road operations.Income for funding banking, buying and selling and wealth control all rose from a yr in the past and the former quarter, outperforming analyst expectancies.Buying and selling and wealth control rose greater than 2% and 5% whilst funding banking income of $1.57 billion used to be 35% larger when compared with closing yr.”Our wealth control crew generated report income, with report shopper balances, and funding banking rebounded,” mentioned CEO Brian Moynihan.”Financial institution of The usa’s gross sales and buying and selling companies persisted their sturdy 2023 momentum this quarter, reporting the most productive first quarter in over a decade.”Click on right here for in-depth research of the most recent inventory marketplace information and occasions shifting inventory costs.Learn the most recent monetary and trade information from Yahoo Finance