diff --git a/plugins/git-release-manager/src/features/Stats/helpers/getTagDates.test.ts b/plugins/git-release-manager/src/features/Stats/helpers/getTagDates.test.ts
index e02aac9551..3274ecc31f 100644
--- a/plugins/git-release-manager/src/features/Stats/helpers/getTagDates.test.ts
+++ b/plugins/git-release-manager/src/features/Stats/helpers/getTagDates.test.ts
@@ -23,7 +23,54 @@ import {
 import { getTagDates } from './getTagDates';
 
 describe('getTagDates', () => {
-  beforeEach(jest.clearAllMocks);
+  beforeEach(() => {
+    jest.clearAllMocks();
+    jest.resetAllMocks();
+  });
+
+  it('should get tag dates for startTag when is tag and endTag is undefined', async () => {
+    (mockApiClient.getTag as jest.Mock).mockResolvedValueOnce(
+      createMockTag({ date: 'TAG-START' }),
+    );
+
+    const result = await getTagDates({
+      pluginApiClient: mockApiClient,
+      project: mockSemverProject,
+      startTag: {
+        tagSha: 'sha-start',
+        tagType: 'tag',
+      },
+    });
+
+    expect(result).toMatchInlineSnapshot(`
+      Object {
+        "endDate": undefined,
+        "startDate": "TAG-START",
+      }
+    `);
+  });
+
+  it('should get tag dates for startTag when startTag is commit and endTag is undefined', async () => {
+    (mockApiClient.getCommit as jest.Mock).mockResolvedValueOnce(
+      createMockCommit({ createdAt: 'COMMIT_START' }),
+    );
+
+    const result = await getTagDates({
+      pluginApiClient: mockApiClient,
+      project: mockSemverProject,
+      startTag: {
+        tagSha: 'sha-start',
+        tagType: 'commit',
+      },
+    });
+
+    expect(result).toMatchInlineSnapshot(`
+      Object {
+        "endDate": undefined,
+        "startDate": "COMMIT_START",
+      }
+    `);
+  });
 
   it('should get tag dates when startTag & endTag both are of type tag', async () => {
     (mockApiClient.getTag as jest.Mock)
diff --git a/plugins/git-release-manager/src/features/Stats/helpers/getTagDates.ts b/plugins/git-release-manager/src/features/Stats/helpers/getTagDates.ts
index d4803be4be..d79d7489fd 100644
--- a/plugins/git-release-manager/src/features/Stats/helpers/getTagDates.ts
+++ b/plugins/git-release-manager/src/features/Stats/helpers/getTagDates.ts
@@ -25,7 +25,7 @@ interface GetTagDates {
     tagSha: string;
     tagType: 'tag' | 'commit';
   };
-  endTag: {
+  endTag?: {
     tagSha: string;
     tagType: 'tag' | 'commit';
   };
@@ -37,6 +37,33 @@ export const getTagDates = async ({
   startTag,
   endTag,
 }: GetTagDates) => {
+  if (!endTag) {
+    if (startTag.tagType === 'tag') {
+      const { tag: startTagResponse } = await pluginApiClient.getTag({
+        owner: project.owner,
+        repo: project.repo,
+        tagSha: startTag.tagSha,
+      });
+
+      return {
+        startDate: startTagResponse.date,
+        endDate: undefined,
+      };
+    }
+
+    // If tagType is not a 'tag', it has to be a commit
+    const { commit: startCommit } = await pluginApiClient.getCommit({
+      owner: project.owner,
+      repo: project.repo,
+      ref: startTag.tagSha,
+    });
+
+    return {
+      startDate: startCommit.createdAt,
+      endDate: undefined,
+    };
+  }
+
   if (startTag.tagType === 'tag' && endTag.tagType === 'tag') {
     const [
       { tag: startTagResponse },
@@ -124,7 +151,7 @@ async function getCommitFromTag({
 }: {
   pluginApiClient: GetTagDates['pluginApiClient'];
   project: GetTagDates['project'];
-  tag: GetTagDates['startTag'] | GetTagDates['endTag'];
+  tag: GetTagDates['startTag'] | NonNullable<GetTagDates['endTag']>;
 }) {
   const { tag: tagResponse } = await pluginApiClient.getTag({
     owner: project.owner,