Sentence examples for file a from inspiring English sources

The phrase "file a" is correct and commonly used in written English.
You can use "file a" when talking about submitting a formal document or complaint. For example: "I need to file a complaint with the manager about the poor service I received." "Please make sure to file a report with HR regarding the incident." "I will file a motion with the court to dismiss the case." "We must file a tax return by April 15th." "He needs to file a claim with his insurance company for the car accident."