It depends. It is preferable to enter each Form 1099-INT you receive separately in TurboTax, even if from the same bank. However, adding up the interest income in Box 1 from all of your Form 1099-INTs from the same bank and reporting that amount in one 1099-INT form is okay too. Just make sure to include amounts from other boxes on the forms (if any).
To enter Form 1099-INT in TurboTax Online go to Wages & Income>Investments & Savings
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