Following are the Bank Holidays declared for the year 2008 in Tamilnadu.
| New Years Day | Tuesday, 1 January |
| Pongal | Tuesday, 15 January |
| Thiruvalluvar Day | Wednesday, 16 January |
| Uzhavar Thirunal | Thursday, 17 January |
| Muharram | Sunday, 20 January |
| Republic Day | Saturday, 26 January |
| Meelad-un-Nabi/Good Friday | Friday, 21 March |
| Annual closing of Accounts for Commercial & Co.Op. Banks | Tuesday, 1 April |
| Telugu New Years Day | Monday, 7 April |
| Tamil New Year’s Day | Sunday, 13 April |
| Dr. B R Ambedhkar Birth Day | Monday, 14 April |
| Mahaveer Jayanthi | Friday, 18 April |
| May Day | Thursday, 1 May |
| Independence Day | Friday, 15 August |
| Krishna Jayanthi | Saturday, 23 August |
| Vinayakar Chathurthi | Wednesday, 3 September |
| Half-Yearly closing of Accountsfor Commercial & Co.Op Banks | Tuesday, 30 September |
| Ramzan | Wednesday, 1 October |
| Gandhi Jayanthi | Thursday, 2 October |
| Ayutha Pooja | Wednesday, 8 October |
| Vijaya Dasami | Thursday, 9 October |
| Deepavali | Monday, 27 October |
| Bakrid | Tuesday, 9 December |
| Christmas | Thursday, 25 December |