diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 4cb5c10..b32ac99 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -24,6 +24,17 @@ jobs:
           echo "Base Ref: ${{ steps.branch-name.outputs.base_ref_branch }}"
           echo "Head Ref: ${{ steps.branch-name.outputs.head_ref_branch }}"
           echo "Ref: ${{ steps.branch-name.outputs.ref_branch }}"
+          echo "Is Default: ${{ steps.branch-name.outputs.is_default }}"
+      - name: Check is_default for pull request
+        if: github.event_name == 'pull_request' && steps.branch-name.outputs.is_default != 'false'
+        run: |
+          echo "Is default is invalid: ${{ steps.branch-name.outputs.is_default }}"
+          exit 1
+      - name: Check is_default for non pull request
+        if: github.event_name != 'pull_request' && steps.branch-name.outputs.is_default != 'true'
+        run: |
+          echo "Is default is invalid: ${{ steps.branch-name.outputs.is_default }}"
+          exit 1
       - name: Test base ref output
         if: github.event_name == 'pull_request' && !steps.branch-name.outputs.base_ref_branch
         run: |
diff --git a/action.yml b/action.yml
index 335f5c4..388a455 100644
--- a/action.yml
+++ b/action.yml
@@ -16,6 +16,9 @@ inputs:
     required: false
 
 outputs:
+  is_default:
+    value: ${{ steps.default.outputs.is_default }}
+    description: 'Returns "true" if the current branch is the default else "false".'
   current_branch:
     value: ${{ steps.current_branch.outputs.current_branch }}
     description: 'Returns the value of the current branch which is consistent regardless of event_type: i.e (push, pull_requests).'
@@ -50,6 +53,14 @@ runs:
           echo "::set-output name=current_branch::${{ steps.branch.outputs.ref_branch }}"
         fi
       shell: bash
+    - id: default
+      run: |
+        if [[ "${{ steps.current_branch.outputs.current_branch }}" == "${{ steps.current_branch.outputs.base_ref_branch }}" ]]; then
+          echo "::set-output name=is_default::true"
+        else
+          echo "::set-output name=is_default::false"
+        fi
+      shell: bash  
 
 branding:
   icon: git-branch