| Date | | | |
| 7-Jan-1922 | | Treaty ratified by Dail Eireann by majority of seven after protracted discussion. | |
| 10-Jan-1922 | | Arthur Griffith elected President of Dail Eireann. | |
| 14-Jan-1922 | | Meeting of Parliament of Southern Ireland when Treaty was ratified by it and Provisional Government of Irish Free State appointed. | |
| 16-Jan-1922 | | Provisional Government of the Irish Free State Constituted. | |
| 31-Jan-1922 | | Beggar's Bush Barracks occupied by National Army. | |
| 27-Feb-1922 | | National troops took over Guard at Bank of Ireland. | |
| 1-Apr-1922 | | Provisional Government took over all services controlled by British Authorities. | |
| 11-Apr-1922 | | Wellington Barracks and Tallaght Aerodrome occupied by National Army. | |
| 14-Apr-1922 | | Four Courts and other buildings in Dublin seized and fortified by forces under Mr. Rory O'Connor. | |
| 25-Apr-1922 | | First Irish Exchequer Returns in 105 years issued in iris Oifigiuil (Dublin Gazette). | |