- 12January 12, 1975No events
- 13January 13, 1975No events
- 14January 14, 1975No events
- 15January 15, 1975No events
- 16January 16, 1975No events
- 17January 17, 1975No events
- 18January 18, 1975No events
A=ANNUAL
M=MONTHLY
Q=QUARTERLY
DISCLAIMER: THESE DUE DATES ARE SUBJECT TO CHANGE. WE WILL DO OUR BEST TO KEEP THIS CALENDAR UP TO DATE WITH THE EVERCHANGING DEADLINES. ANY STATE FILING DUE DATES ARE IN REFERENCE SPECIFICALLY TO THE WASHINGTON STATE DEPARTMENT OF REVENUE.