diff --git a/src/traces/bar/hover.js b/src/traces/bar/hover.js
index 696ec89a55b..f1fe8d8cc82 100644
--- a/src/traces/bar/hover.js
+++ b/src/traces/bar/hover.js
@@ -67,7 +67,7 @@ module.exports = function hoverPoints(pointData, xval, yval, hovermode) {
 
     if(trace.orientation === 'h') {
         pointData.x0 = pointData.x1 = xa.c2p(di.x, true);
-        pointData.xLabelVal = di.s;
+        pointData.xLabelVal = di.b + di.s;
 
         pointData.y0 = ya.c2p(barPos(di) - barDelta, true);
         pointData.y1 = ya.c2p(barPos(di) + barDelta, true);
@@ -75,7 +75,7 @@ module.exports = function hoverPoints(pointData, xval, yval, hovermode) {
     }
     else {
         pointData.y0 = pointData.y1 = ya.c2p(di.y, true);
-        pointData.yLabelVal = di.s;
+        pointData.yLabelVal = di.b + di.s;
 
         pointData.x0 = xa.c2p(barPos(di) - barDelta, true);
         pointData.x1 = xa.c2p(barPos(di) + barDelta, true);
diff --git a/src/traces/bar/set_positions.js b/src/traces/bar/set_positions.js
index fd5edd0487f..c34adab1b02 100644
--- a/src/traces/bar/set_positions.js
+++ b/src/traces/bar/set_positions.js
@@ -485,8 +485,8 @@ function stackBars(gd, sa, sieve) {
             if(!isNumeric(bar.s)) continue;
 
             // stack current bar and get previous sum
-            var barBase = sieve.put(bar.p, bar.s),
-                barTop = barBase + bar.s;
+            var barBase = sieve.put(bar.p, bar.b + bar.s),
+                barTop = barBase + bar.b + bar.s;
 
             // store the bar base and top in each calcdata item
             bar.b = barBase;
@@ -524,7 +524,7 @@ function sieveBars(gd, sa, sieve) {
         for(var j = 0; j < trace.length; j++) {
             var bar = trace[j];
 
-            if(isNumeric(bar.s)) sieve.put(bar.p, bar.s);
+            if(isNumeric(bar.s)) sieve.put(bar.p, bar.b + bar.s);
         }
     }
 }
diff --git a/test/image/baselines/bar_attrs_group_norm.png b/test/image/baselines/bar_attrs_group_norm.png
index f209c383e66..53a17a1353a 100644
Binary files a/test/image/baselines/bar_attrs_group_norm.png and b/test/image/baselines/bar_attrs_group_norm.png differ
diff --git a/test/image/mocks/bar_attrs_group_norm.json b/test/image/mocks/bar_attrs_group_norm.json
index f08d1d8e8b5..0f6c54b2886 100644
--- a/test/image/mocks/bar_attrs_group_norm.json
+++ b/test/image/mocks/bar_attrs_group_norm.json
@@ -1,12 +1,12 @@
 {
     "data":[
         {
-            "base":4,
-            "x":[3,2,1,0],
+            "base":[100,40,25,10],
+            "x":[-50,10,25,40],
             "type":"bar"
         }, {
-            "base":[7,6,5,4],
-            "x":[1,2,3,4],
+            "base":[0,60,75,90],
+            "x":[50,-10,-25,-40],
             "type":"bar"
         }
     ],
@@ -14,6 +14,6 @@
         "height":400,
         "width":400,
         "barmode":"group",
-        "barnorm":"percent"
+        "barnorm":"fraction"
     }
 }
diff --git a/test/jasmine/tests/bar_test.js b/test/jasmine/tests/bar_test.js
index d9d93fc48d9..a67ee339cf7 100644
--- a/test/jasmine/tests/bar_test.js
+++ b/test/jasmine/tests/bar_test.js
@@ -453,6 +453,27 @@ describe('Bar.setPositions', function() {
         assertPointField(cd, 'y', [[0.75, 0.50, 0.25], [0.25, 0.50, 0.75]]);
     });
 
+    it('should honor barnorm (group+base case)', function() {
+        var gd = mockBarPlot([{
+            base: [3, 2, 1],
+            y: [0, 0, 0]
+        }, {
+            y: [1, 2, 3]
+        }], {
+            bargap: 0,
+            barmode: 'group',
+            barnorm: 'fraction'
+        });
+
+        expect(gd._fullLayout.barnorm).toBe('fraction');
+
+        var cd = gd.calcdata;
+        assertPointField(cd, 'b', [[0.75, 0.50, 0.25], [0, 0, 0]]);
+        assertPointField(cd, 's', [[0, 0, 0], [0.25, 0.50, 0.75]]);
+        assertPointField(cd, 'x', [[-0.25, 0.75, 1.75], [0.25, 1.25, 2.25]]);
+        assertPointField(cd, 'y', [[0.75, 0.50, 0.25], [0.25, 0.50, 0.75]]);
+    });
+
     it('should honor barnorm (stack case)', function() {
         var gd = mockBarPlot([{
             y: [3, 2, 1]
@@ -753,17 +774,34 @@ describe('bar hover', function() {
         });
 
         it('should return the correct hover point data (case y)', function() {
-            var out = _hover(gd, 185.645, 0.15, 'y');
+            var out = _hover(gd, 0.75, 0.15, 'y'),
+                subplot = gd._fullLayout._plots.xy,
+                xa = subplot.xaxis,
+                ya = subplot.yaxis,
+                barDelta = 1 * 0.8 / 2,
+                x0 = xa.c2p(0.5, true),
+                x1 = x0,
+                y0 = ya.c2p(0 - barDelta, true),
+                y1 = ya.c2p(0 + barDelta, true);
 
-            expect(out.style).toEqual([0, '#1f77b4', 75, 0]);
-            assertPos(out.pos, [182.88, 182.88, 214.5, 170.5]);
+            expect(out.style).toEqual([0, '#1f77b4', 0.5, 0]);
+            assertPos(out.pos, [x0, x1, y0, y1]);
         });
 
         it('should return the correct hover point data (case closest)', function() {
-            var out = _hover(gd, 135.88, -0.15, 'closest');
-
-            expect(out.style).toEqual([0, '#1f77b4', 75, 0]);
-            assertPos(out.pos, [182.88, 182.88, 214.5, 192.5]);
+            var out = _hover(gd, 0.75, -0.15, 'closest'),
+                subplot = gd._fullLayout._plots.xy,
+                xa = subplot.xaxis,
+                ya = subplot.yaxis,
+                barDelta = 1 * 0.8 / 2 / 2,
+                barPos = 0 - 1 * 0.8 / 2 + barDelta,
+                x0 = xa.c2p(0.5, true),
+                x1 = x0,
+                y0 = ya.c2p(barPos - barDelta, true),
+                y1 = ya.c2p(barPos + barDelta, true);
+
+            expect(out.style).toEqual([0, '#1f77b4', 0.5, 0]);
+            assertPos(out.pos, [x0, x1, y0, y1]);
         });
     });