The Tule Lake Unit does not collect an entrace fee.
If you are planning on visiting other National Park Service sites, you can go to National Parks and Federal Recreation Lands Pass page, learn about the many passes available.
Entrance fees at all National Park Service sites will be waived on the following days in 2015:
January 19 - Martin Luther King Jr. Day
February 14-16 - Presidents Day Weekend
April 18-19 - National Park Week
August 25 - National Park Service Birthday
September 27 - National Public Lands Day
November 11 - Veteran's Day
Camping and other use fees apply. Enjoy your parks!