Banks across India will be closed on Saturday, December 27, as it is the fourth Saturday of the month, adhering to RBI guidelines. While physical branches will be shut for transactions, digital services like mobile banking, internet banking, and ATMs will remain operational. State-specific holidays include closures in Meghalaya on December 30 and in Mizoram and Manipur on December 31 for local observances. Regular banking services will resume on Monday, December 29.