Do I still need to pay california state tax, even I have been out of the U.S. for the entire 2020,?

You don’t need to file a California income tax return if:

• You did not live or work in California,
• Did not receive any California source income, such as income from a rental property or business located in California; and
• Cut ties to California

You would have to file if you had a closer connection to California than you did to Nicaragua. For example, you may have to file if you still owned a house in California, voted in a state election, kept a California driver’s license or intend to move back to California.

See: Guidelines for Determining residency on page 5 of 2020 Guidelines for Determining Resident Status.