| January |
| New Years Day – All Government offices, banks, and post offices closed. |
 |
| Martin Luther King Day – all Government offices, Post Office and banks are closed |
|
| Deadline to mail Washington State Department of Revenue taxes for monthly filers |
|
| February |
| Deadline to mail Form 940 & 941 for the 4th Quarter of 2009 |
| Deadline to mail Washington State Department of Revenue taxes for quarterly filers |
| Deadline to mail city taxes for quarterly filers |
| Deadline to mail Washington State Employment Security taxes for Quarter 4, 2009 |
| Deadline to mail Washington State Labor and Industry taxes for Quarter 4, 2009 |
|
| President's Day – All government offices, banks, and post offices closed. |
|
| Deadline to mail Washington State Department of Revenue taxes for monthly filers |
|
| March |
| Deadline to mail Form 1096 and IRS copies of 1099s for 2009 |
| Deadline to mail Form W3 and IRS copies of W2s for 2009 |
|
| Deadline to mail Washington State Department of Revenue taxes for monthly filers |
|
| April |
| Deadline to mail Washington State Department of Revenue taxes for monthly filers |
|
| Deposit FUTA tax owed through June if more than $500 |
| Deadline to mail Washington State Department of Revenue taxes for quarterly filers |
| Deadline to mail City taxes for quarterly filers |
| Deadline to mail Washington State Employment Security taxes for Quarer 1, 2010 |
| Deadline to mail Washington State Labor and Industry taxes for Quarter 1, 2010 |
|
| May |
| Deadline to mail Washington State Department of Revenue taxes for monthly filers |
|
| Memorial Day - all Government offices, Post Office and banks are closed |
|
| June |
| Deadline to mail Washington State Department of Revenue taxes for monthly filers |
|
| July |
| Independence Day – All government offices, Banks, and Post offices closed |
|
| Deadline to mail Washington State Department of Revenue taxes for monthly filers |
|
| August |
| Deposit FUTA tax owed through June if more than $500 |
| Deadline to mail Form 941 for Quarter 2, 2010 |
| Deadline to mail Washington State Department of Revenue taxes for quarterly filers |
| Deadline to mail City taxes for quarterly filers |
| Deadline to mail Washington State Employment Security taxes for Quarter 2, 2010 |
| Deadline to mail Washington State Labor and Industry taxes for Quarter 2, 2010 |
|
| Deadline to mail Washington State Department of Revenue taxes for monthly filers |
|
| September |
| Labor Day – all Government offices, Post Office and banks are closed |
|
| Deadline to mail Washington State Department of Revenue taxes for monthly filers |
|
| October |
| Columbus Day - all Government offices, Post Office and banks are closed |
|
| Deadline to mail Washington State Department of Revenue taxes for monthly filers |
|
| November |
| Deposit FUTA tax owed through September if more than $500 |
| Deadline to mail Form 941 for the 3rd Quarter of 2010 |
| Deadline to mail Washington State Department of Revenue taxes for quarterly filers |
| Deadline to mail City taxes for quarterly filers |
| Deadline to mail Washington State Employment Security taxes for Quarter 3, 2010 |
Deadline to mail Washington State Labor and Industry taxes for Quarter 3, 2010
 |
|
| Veterans Day - all Government offices, Post Office and banks are closed |
|
| Thanksgiving Day - all Government offices, Post Office and banks are closed |
|
| Deadline to mail Washington State Department of Revenue taxes for monthly filers |
|
| December |
| Christmas Eve (Federal Holiday Observed) - all Government offices, Post Office and banks are closed |
|
Deadline to mail Washington State Department of Revenue taxes for monthly filers
|
|
| End of Quarter 4 2010 and end of Calendar year 2010 |
About PSBM
Friday, January 1st