diff --git a/.github/workflows/build_and_test.yml b/.github/workflows/build_and_test.yml
index 34c9761155a25..3a8844ee9c3da 100644
--- a/.github/workflows/build_and_test.yml
+++ b/.github/workflows/build_and_test.yml
@@ -202,6 +202,9 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
+        exclude:
+          # Excluding React 18 tests unless on `canary` branch until budget is approved.
+          - react: ${{ github.event_name == 'pull_request' && '18.3.1' }}
         group: [1/5, 2/5, 3/5, 4/5, 5/5]
         # Empty value uses default
         react: ['', '18.3.1']
@@ -219,6 +222,9 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
+        exclude:
+          # Excluding React 18 tests unless on `canary` branch until budget is approved.
+          - react: ${{ github.event_name == 'pull_request' && '18.3.1' }}
         group: [1/5, 2/5, 3/5, 4/5, 5/5]
         # Empty value uses default
         react: ['']
@@ -237,6 +243,9 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
+        exclude:
+          # Excluding React 18 tests unless on `canary` branch until budget is approved.
+          - react: ${{ github.event_name == 'pull_request' && '18.3.1' }}
         group: [1/5, 2/5, 3/5, 4/5, 5/5]
         # Empty value uses default
         # TODO: Run with React 18.
@@ -372,6 +381,9 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
+        exclude:
+          # Excluding React 18 tests unless on `canary` branch until budget is approved.
+          - react: ${{ github.event_name == 'pull_request' && '18.3.1' }}
         group: [1/4, 2/4, 3/4, 4/4]
         # Empty value uses default
         react: ['', '18.3.1']
@@ -389,6 +401,9 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
+        exclude:
+          # Excluding React 18 tests unless on `canary` branch until budget is approved.
+          - react: ${{ github.event_name == 'pull_request' && '18.3.1' }}
         group: [1/5, 2/5, 3/5, 4/5, 5/5]
         # Empty value uses default
         react: ['', '18.3.1']