diff --git a/poi/src/test/java/org/apache/poi/ss/formula/functions/TestSumif.java b/poi/src/test/java/org/apache/poi/ss/formula/functions/TestSumif.java
index 96bd358234..d59788a20e 100644
--- a/poi/src/test/java/org/apache/poi/ss/formula/functions/TestSumif.java
+++ b/poi/src/test/java/org/apache/poi/ss/formula/functions/TestSumif.java
@@ -17,7 +17,7 @@
 
 package org.apache.poi.ss.formula.functions;
 
-import static org.apache.poi.ss.util.Utils.addRow;
+import static org.apache.poi.ss.util.Utils.*;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertNotEquals;
 import static org.junit.jupiter.api.Assertions.assertTrue;
@@ -111,10 +111,10 @@ final class TestSumif {
         try (HSSFWorkbook wb = initWorkbook1()) {
             HSSFFormulaEvaluator fe = new HSSFFormulaEvaluator(wb);
             HSSFCell cell = wb.getSheetAt(0).getRow(0).createCell(100);
-            confirmDouble(fe, cell, "SUMIF(A2:A5,\">160000\",B2:B5)", 63000);
-            confirmDouble(fe, cell, "SUMIF(A2:A5,\">160000\")", 900000);
-            confirmDouble(fe, cell, "SUMIF(A2:A5,300000,B2:B5)", 21000);
-            confirmDouble(fe, cell, "SUMIF(A2:A5,\">\" & C2,B2:B5)", 49000);
+            assertDouble(fe, cell, "SUMIF(A2:A5,\">160000\",B2:B5)", 63000);
+            assertDouble(fe, cell, "SUMIF(A2:A5,\">160000\")", 900000);
+            assertDouble(fe, cell, "SUMIF(A2:A5,300000,B2:B5)", 21000);
+            assertDouble(fe, cell, "SUMIF(A2:A5,\">\" & C2,B2:B5)", 49000);
         }
     }
 
@@ -123,7 +123,7 @@ final class TestSumif {
         try (HSSFWorkbook wb = initWorkbook1WithNA()) {
             HSSFFormulaEvaluator fe = new HSSFFormulaEvaluator(wb);
             HSSFCell cell = wb.getSheetAt(0).getRow(0).createCell(100);
-            confirmError(fe, cell, "SUMIF(A2:A6,\">160000\",B2:B6)", FormulaError.NA);
+            assertError(fe, cell, "SUMIF(A2:A6,\">160000\",B2:B6)", FormulaError.NA);
         }
     }
 
@@ -132,7 +132,7 @@ final class TestSumif {
         try (HSSFWorkbook wb = initWorkbook1WithBooleanAndString()) {
             HSSFFormulaEvaluator fe = new HSSFFormulaEvaluator(wb);
             HSSFCell cell = wb.getSheetAt(0).getRow(0).createCell(100);
-            confirmDouble(fe, cell, "SUMIF(A2:A7,\">160000\",B2:B7)", 63000);
+            assertDouble(fe, cell, "SUMIF(A2:A7,\">160000\",B2:B7)", 63000);
         }
     }
 
@@ -141,10 +141,10 @@ final class TestSumif {
         try (HSSFWorkbook wb = initWorkbook2()) {
             HSSFFormulaEvaluator fe = new HSSFFormulaEvaluator(wb);
             HSSFCell cell = wb.getSheetAt(0).getRow(0).createCell(100);
-            confirmDouble(fe, cell, "SUMIF(A2:A7,\"Fruits\",C2:C7)", 2000);
-            confirmDouble(fe, cell, "SUMIF(A2:A7,\"Vegetables\",C2:C7)", 12000);
-            confirmDouble(fe, cell, "SUMIF(B2:B7,\"*es\",C2:C7)", 4300);
-            confirmDouble(fe, cell, "SUMIF(A2:A7,\"\",C2:C7)", 400);
+            assertDouble(fe, cell, "SUMIF(A2:A7,\"Fruits\",C2:C7)", 2000);
+            assertDouble(fe, cell, "SUMIF(A2:A7,\"Vegetables\",C2:C7)", 12000);
+            assertDouble(fe, cell, "SUMIF(B2:B7,\"*es\",C2:C7)", 4300);
+            assertDouble(fe, cell, "SUMIF(A2:A7,\"\",C2:C7)", 400);
         }
     }
 
@@ -201,20 +201,4 @@ final class TestSumif {
         NumericValueEval nve = (NumericValueEval)actualEval;
         assertEquals(expected, nve.getNumberValue(), 0);
     }
-
-    private static void confirmDouble(HSSFFormulaEvaluator fe, HSSFCell cell, String formulaText, double expectedResult) {
-        cell.setCellFormula(formulaText);
-        fe.notifyUpdateCell(cell);
-        CellValue result = fe.evaluate(cell);
-        assertEquals(result.getCellType(), CellType.NUMERIC);
-        assertEquals(expectedResult, result.getNumberValue());
-    }
-
-    private static void confirmError(HSSFFormulaEvaluator fe, HSSFCell cell, String formulaText, FormulaError expectedError) {
-        cell.setCellFormula(formulaText);
-        fe.notifyUpdateCell(cell);
-        CellValue result = fe.evaluate(cell);
-        assertEquals(result.getCellType(), CellType.ERROR);
-        assertEquals(expectedError.getCode(), result.getErrorValue());
-    }
 }
diff --git a/poi/src/test/java/org/apache/poi/ss/formula/functions/TestSumifs.java b/poi/src/test/java/org/apache/poi/ss/formula/functions/TestSumifs.java
index 629032c5a1..234d6392f4 100644
--- a/poi/src/test/java/org/apache/poi/ss/formula/functions/TestSumifs.java
+++ b/poi/src/test/java/org/apache/poi/ss/formula/functions/TestSumifs.java
@@ -19,6 +19,7 @@
 
 package org.apache.poi.ss.formula.functions;
 
+import static org.apache.poi.ss.util.Utils.*;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
@@ -33,8 +34,11 @@ import org.apache.poi.ss.formula.eval.NumberEval;
 import org.apache.poi.ss.formula.eval.NumericValueEval;
 import org.apache.poi.ss.formula.eval.StringEval;
 import org.apache.poi.ss.formula.eval.ValueEval;
+import org.apache.poi.ss.usermodel.FormulaError;
 import org.junit.jupiter.api.Test;
 
+import java.io.IOException;
+
 /**
  * Test cases for SUMIFS()
  */
@@ -358,4 +362,46 @@ final class TestSumifs {
         assertTrue(result instanceof ErrorEval, "Expect to have an error when an input is an invalid value, but had: " + result.getClass());
         assertEquals(ErrorEval.NAME_INVALID, result);
     }
+
+    @Test
+    void testMicrosoftExample1() throws IOException {
+        try (HSSFWorkbook wb = initWorkbook1()) {
+            HSSFFormulaEvaluator fe = new HSSFFormulaEvaluator(wb);
+            HSSFCell cell = wb.getSheetAt(0).getRow(0).createCell(100);
+            assertDouble(fe, cell, "SUMIFS(A2:A9, B2:B9, \"=A*\", C2:C9, \"Tom\")", 20);
+            assertDouble(fe, cell, "SUMIFS(A2:A9, B2:B9, \"<>Bananas\", C2:C9, \"Tom\")", 30);
+        }
+    }
+
+    @Test
+    void testMicrosoftExample1WithNA() throws IOException {
+        try (HSSFWorkbook wb = initWorkbook1WithNA()) {
+            HSSFFormulaEvaluator fe = new HSSFFormulaEvaluator(wb);
+            HSSFCell cell = wb.getSheetAt(0).getRow(0).createCell(100);
+            assertError(fe, cell, "SUMIFS(A2:A10, B2:B10, \"<>Bananas\", C2:C10, \"Tom\")", FormulaError.NA);
+        }
+    }
+
+    //see https://support.microsoft.com/en-us/office/sumifs-function-c9e748f5-7ea7-455d-9406-611cebce642b
+    private HSSFWorkbook initWorkbook1() {
+        HSSFWorkbook wb = new HSSFWorkbook();
+        HSSFSheet sheet = wb.createSheet();
+        addRow(sheet, 0, "Quantity Sold", "Product", "Salesperson");
+        addRow(sheet, 1, 5, "Apples", "Tom");
+        addRow(sheet, 2, 4, "Apples", "Sarah");
+        addRow(sheet, 3, 15, "Artichokes", "Tom");
+        addRow(sheet, 4, 3, "Artichokes", "Sarah");
+        addRow(sheet, 5, 22, "Bananas", "Tom");
+        addRow(sheet, 6, 12, "Bananas", "Sarah");
+        addRow(sheet, 7, 10, "Carrots", "Tom");
+        addRow(sheet, 8, 33, "Carrots", "Sarah");
+        return wb;
+    }
+
+    private HSSFWorkbook initWorkbook1WithNA() {
+        HSSFWorkbook wb = initWorkbook1();
+        HSSFSheet sheet = wb.getSheetAt(0);
+        addRow(sheet, 9, FormulaError.NA, "Pears", "Tom");
+        return wb;
+    }
 }
diff --git a/poi/src/test/java/org/apache/poi/ss/util/Utils.java b/poi/src/test/java/org/apache/poi/ss/util/Utils.java
index 0b01547308..c2c8d67cb1 100644
--- a/poi/src/test/java/org/apache/poi/ss/util/Utils.java
+++ b/poi/src/test/java/org/apache/poi/ss/util/Utils.java
@@ -17,16 +17,15 @@
 
 package org.apache.poi.ss.util;
 
-import org.apache.poi.ss.usermodel.Cell;
-import org.apache.poi.ss.usermodel.FormulaError;
-import org.apache.poi.ss.usermodel.Row;
-import org.apache.poi.ss.usermodel.Sheet;
+import org.apache.poi.ss.usermodel.*;
 
 import java.time.LocalDate;
 import java.time.LocalDateTime;
 import java.util.Calendar;
 import java.util.Date;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
 public class Utils {
     public static void addRow(Sheet sheet, int rownum, Object... values) {
         Row row = sheet.createRow(rownum);
@@ -56,4 +55,19 @@ public class Utils {
         }
     }
 
+    public static void assertDouble(FormulaEvaluator fe, Cell cell, String formulaText, double expectedResult) {
+        cell.setCellFormula(formulaText);
+        fe.notifyUpdateCell(cell);
+        CellValue result = fe.evaluate(cell);
+        assertEquals(result.getCellType(), CellType.NUMERIC);
+        assertEquals(expectedResult, result.getNumberValue());
+    }
+
+    public static void assertError(FormulaEvaluator fe, Cell cell, String formulaText, FormulaError expectedError) {
+        cell.setCellFormula(formulaText);
+        fe.notifyUpdateCell(cell);
+        CellValue result = fe.evaluate(cell);
+        assertEquals(result.getCellType(), CellType.ERROR);
+        assertEquals(expectedError.getCode(), result.getErrorValue());
+    }
 }