What is the required amount of test codecoverage when deploying an Apex class?

The required amount of test code coverage when deploying an Apex class is 75%. This means that at least 75% of the Apex code must be covered by unit tests, and all of those tests must complete successfully. Verified References:https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_depl oying_ant_deploy.htm