| 01/23/2012 | First read in House and referred to House Taxation H.J. 143 | N/A | |
| 01/31/2012 | Scheduled for hearing | | 13:47 |
| 01/31/2012 | House Taxation Motion to amend, Passed Amendment 1116fa | | 13:47 |
| 01/31/2012 | House Taxation Do Pass Amended, Passed, YEAS 11, NAYS 4. | | 13:47 |
| 02/02/2012 | House of Representatives Do Pass Amended, Passed, YEAS 52, NAYS 11. H.J. 303 | | 1:31:20 |
| 02/06/2012 | First read in Senate and referred to Senate Taxation S.J. 278 | N/A | |
| 02/15/2012 | Scheduled for hearing | | 47:29 |
| 02/15/2012 | Senate Taxation Do Pass, Passed, YEAS 7, NAYS . | | 47:29 |
| 02/16/2012 | Senate Do Pass Amended, Passed, YEAS 24, NAYS 8. S.J. 472 | | 21:12 |
| 02/21/2012 | Signed by the Speaker H.J. 538 | N/A | |
| 02/22/2012 | Signed by the President S.J. 511 | N/A | |
| 02/23/2012 | Delivered to the Governor on Thursday, February 23, 2012 H.J. 587 | N/A | |
| 02/29/2012 | Vetoed by the Governor H.J. 687 | N/A | |
| 03/01/2012 | Veto override, Passed, YEAS 68, NAYS 2. H.J. 710 | | 6:06 |
| 03/01/2012 | Veto override, Passed, YEAS 26, NAYS 6. S.J. 651 | | 6:06 |
| 03/02/2012 | Delivered veto override to the Secretary of State H.J. 730 | N/A | |
