If you are referring to STATE LAW requirement to report it to the authorities, I believe it is within 24 hours. If you are referring to your insurance company's requirement, you must contact your carrier for that infomration or read your policy.
you can not leave the scene of a accident
48 hours
You have 10 days to file a police report
90 days
24 hours I think
90 days
as long as it takes for you to write your statement
Typically you have 30 days to file.
48 hoursThe vessel operator has 48 hours to file a boating accident report when an injured person requires medical attention beyond first aid.
You must do this right away.
It varies by state, but don't delay - it's usually not a long time.
most laws for rules of the road are similar in any state. an accident report needs to be filed as soon as possible. check with your local law enforcement for the correct filings.