diff --git a/src/components/Reports/StaffExpenseReport/DownloadButtonGroup/downloadReport.test.tsx b/src/components/Reports/StaffExpenseReport/DownloadButtonGroup/downloadReport.test.tsx
index 8ee719086d..c7a186481b 100644
--- a/src/components/Reports/StaffExpenseReport/DownloadButtonGroup/downloadReport.test.tsx
+++ b/src/components/Reports/StaffExpenseReport/DownloadButtonGroup/downloadReport.test.tsx
@@ -1,7 +1,7 @@
 import { StaffExpenseCategoryEnum } from 'src/graphql/types.generated';
 import { ReportType } from '../Helpers/StaffReportEnum';
 import { Transaction } from '../Helpers/filterTransactions';
-import { createCsvReport } from './downloadReport';
+import { createCsvReport, dateSortTransactions } from './downloadReport';
 
 const mockData: Transaction[] = [
   {
@@ -9,7 +9,7 @@ const mockData: Transaction[] = [
     category: StaffExpenseCategoryEnum.MinistryReimbursement,
     displayCategory: 'Ministry Reimbursement',
     fundType: 'Primary',
-    transactedAt: '2025-07-01',
+    transactedAt: '2025-10-01',
     amount: -2724,
   },
   {
@@ -113,4 +113,14 @@ describe('downloadReport', () => {
     expect(clickMock).toHaveBeenCalled();
     expect(removeChildMock).toHaveBeenCalledWith(realLink);
   });
+
+  describe('dateSortTransactions', () => {
+    it('sorts transactions by ascending date', () => {
+      expect(
+        dateSortTransactions(mockData).map(
+          (transaction) => transaction.transactedAt,
+        ),
+      ).toEqual(['2025-08-01', '2025-09-01', '2025-10-01']);
+    });
+  });
 });
diff --git a/src/components/Reports/StaffExpenseReport/DownloadButtonGroup/downloadReport.tsx b/src/components/Reports/StaffExpenseReport/DownloadButtonGroup/downloadReport.tsx
index c752b4939d..15dbdac412 100644
--- a/src/components/Reports/StaffExpenseReport/DownloadButtonGroup/downloadReport.tsx
+++ b/src/components/Reports/StaffExpenseReport/DownloadButtonGroup/downloadReport.tsx
@@ -11,10 +11,11 @@ const createTable = (
   transactions: Transaction[],
   locale: string,
 ) => {
+  const dateSortedTransactions = dateSortTransactions(transactions);
   const csvData = [
     [title],
     csvHeader,
-    ...transactions.map((transaction) => [
+    ...dateSortedTransactions.map((transaction) => [
       dateFormat(DateTime.fromISO(transaction.transactedAt), locale),
       transaction.displayCategory,
       currencyFormat(transaction.amount, 'USD', locale),
@@ -24,6 +25,12 @@ const createTable = (
   return csvData;
 };
 
+export function dateSortTransactions(transactions: Transaction[]) {
+  return [...transactions].sort((transactionA, transactionB) =>
+    transactionA.transactedAt.localeCompare(transactionB.transactedAt),
+  );
+}
+
 function createCombinedReport(
   transactions: Transaction[],
   titles: { income: string; expense: string },