A number of changes were made to the cabinet system after 1919. The number of ministers was increased and, while as established in 1919 the Irish Republic had no explicit head of state, in 1921 the head of the Ministry was renamed as 'President of the Republic'. For a brief period the members of this president's cabinet became known as "secretaries of state" rather than ministers. When the Fourth Ministry assumed office in 1922, with Arthur Griffith as its head, cabinet members were once again described as ministers and Griffith, a monarchist, adopted the practice of referring to himself as the President of Dáil Éireann, although President of the Republic remained his official title.
For much of 1922 the Aireacht governed in parallel with the Provisional Government, an interim administration established under the Anglo-Irish Treaty, and the membership of the two cabinets overlapped. This anomalous situation came to an end in August 1922 when the membership of both administrations was merged into the Second Provisional Government. In December 1922, when the Irish Free State came into being, both the Aireacht and the Provisional Government were abolished and superseded by the Executive Council of the Irish Free State of the Free State.
| Dáil | Election/Formed | Ministry | President | Party | |
|---|---|---|---|---|---|
| 1st | 1918 election | 1st Ministry | Cathal Brugha | Sinn Féin | |
| 1919 | 2nd Ministry | Éamon de Valera | Sinn Féin | ||
| 2nd | 1921 election | 3rd Ministry | " | Sinn Féin | |
| 1922 (Jan) | 4th Ministry | Arthur Griffith | Sinn Féin (pro-Treaty wing) | ||
| 3rd | 1922 (Aug) | 5th Ministry | W. T. Cosgrave | Sinn Féin (pro-Treaty wing) | |