User guide
What is the 240-day rule calculator?
The 240-day rule calculator estimates the automatic work-authorization period for certain nonimmigrant workers after a timely same-employer extension. It is not a universal grace period.
How it works
- 1
Enter the current I-94 expiration date.
- 2
Confirm that the same employer properly filed the extension before expiration.
- 3
The tool adds 240 days, but approval, denial, or withdrawal may end authorization earlier.
Official sources and methodology
These references come from official U.S. government websites. Check the source for current rules and forms.
Frequently asked questions
Do the 240 days start at filing or I-94 expiration?
When the rule applies, the period generally runs after the existing authorized stay expires.
Can work continue after the extension is denied?
Generally no. Denial, withdrawal, or loss of the underlying basis can end authorization before day 240.