I am a junior and plan to apply to University of Washington in the fall of next year. I just wanted to know if applying early decision will have any impact on their decision of acceptance. I cannot seem to find an acceptance rate for early decision and was hoping someone could give some input on how exactly that would help my chances. This is my top school and I would use my early decision on UDub. Thanks so much in advance. 
There are not early decision or early action options for the University of Washington. In recent years there has been a December 1 application deadline for all students applying for the following Autumn quarter. Decisions are then typically mailed to applicants in March. The application dates and deadlines are spelled out pretty clearly on the UW admissions web pages.