diff --git a/frontend/src/container/ApiMonitoring/utils.tsx b/frontend/src/container/ApiMonitoring/utils.tsx
index 6026ddbb8d9e..bb68d12248ee 100644
--- a/frontend/src/container/ApiMonitoring/utils.tsx
+++ b/frontend/src/container/ApiMonitoring/utils.tsx
@@ -3168,7 +3168,6 @@ export const getStatusCodeBarChartWidgetData = (
 	},
 	description: '',
 	id: '315b15fa-ff0c-442f-89f8-2bf4fb1af2f2',
-	isStacked: false,
 	panelTypes: PANEL_TYPES.BAR,
 	title: '',
 	opacity: '',
diff --git a/frontend/src/container/GridCardLayout/GridCard/WidgetGraphComponent.test.tsx b/frontend/src/container/GridCardLayout/GridCard/WidgetGraphComponent.test.tsx
index 3de8d2fdf9e0..1f0522546bb5 100644
--- a/frontend/src/container/GridCardLayout/GridCard/WidgetGraphComponent.test.tsx
+++ b/frontend/src/container/GridCardLayout/GridCard/WidgetGraphComponent.test.tsx
@@ -53,7 +53,6 @@ const mockProps: WidgetGraphComponentProps = {
 		description: '',
 		fillSpans: false,
 		id: '17f905f6-d355-46bd-a78e-cbc87e6f58cc',
-		isStacked: false,
 		mergeAllActiveQueries: false,
 		nullZeroValues: 'zero',
 		opacity: '1',
diff --git a/frontend/src/container/MeterExplorer/Breakdown/graphs.ts b/frontend/src/container/MeterExplorer/Breakdown/graphs.ts
index a122bdcf7c0f..4948537f98b6 100644
--- a/frontend/src/container/MeterExplorer/Breakdown/graphs.ts
+++ b/frontend/src/container/MeterExplorer/Breakdown/graphs.ts
@@ -38,7 +38,6 @@ export const getWidgetQueryBuilder = ({
 }: GetWidgetQueryPropsReturn): Widgets => ({
 	description: description || '',
 	id: id || uuid(),
-	isStacked: false,
 	nullZeroValues: nullZeroValues || '',
 	opacity: '1',
 	panelTypes,
diff --git a/frontend/src/container/MetricsApplication/MetricsApplication.factory.ts b/frontend/src/container/MetricsApplication/MetricsApplication.factory.ts
index 15eff76f8b7c..0157acfeac28 100644
--- a/frontend/src/container/MetricsApplication/MetricsApplication.factory.ts
+++ b/frontend/src/container/MetricsApplication/MetricsApplication.factory.ts
@@ -14,7 +14,6 @@ export const getWidgetQueryBuilder = ({
 }: GetWidgetQueryBuilderProps): Widgets => ({
 	description: '',
 	id: id || v4(),
-	isStacked: false,
 	nullZeroValues: '',
 	opacity: '0',
 	panelTypes,
diff --git a/frontend/src/container/NewWidget/RightContainer/index.tsx b/frontend/src/container/NewWidget/RightContainer/index.tsx
index 3e693b625876..4a374d977d07 100644
--- a/frontend/src/container/NewWidget/RightContainer/index.tsx
+++ b/frontend/src/container/NewWidget/RightContainer/index.tsx
@@ -535,8 +535,6 @@ interface RightContainerProps {
 	setTitle: Dispatch<SetStateAction<string>>;
 	description: string;
 	setDescription: Dispatch<SetStateAction<string>>;
-	stacked: boolean;
-	setStacked: Dispatch<SetStateAction<boolean>>;
 	opacity: string;
 	setOpacity: Dispatch<SetStateAction<string>>;
 	selectedNullZeroValue: string;
diff --git a/frontend/src/container/NewWidget/__test__/NewWidget.test.tsx b/frontend/src/container/NewWidget/__test__/NewWidget.test.tsx
index 68b58f3e017d..3548583a5090 100644
--- a/frontend/src/container/NewWidget/__test__/NewWidget.test.tsx
+++ b/frontend/src/container/NewWidget/__test__/NewWidget.test.tsx
@@ -6,7 +6,48 @@
 // - Handling multiple rows correctly
 // - Handling widgets with different heights
 
-import { placeWidgetAtBottom, placeWidgetBetweenRows } from '../utils';
+import { PANEL_TYPES } from 'constants/queryBuilder';
+import { DashboardProvider } from 'providers/Dashboard/Dashboard';
+import { PreferenceContextProvider } from 'providers/preferences/context/PreferenceContextProvider';
+import { I18nextProvider } from 'react-i18next';
+import { useSearchParams } from 'react-router-dom-v5-compat';
+import i18n from 'ReactI18';
+import { render } from 'tests/test-utils';
+
+import NewWidget from '..';
+import {
+	getDefaultWidgetData,
+	placeWidgetAtBottom,
+	placeWidgetBetweenRows,
+} from '../utils';
+
+const MOCK_SEARCH_PARAMS =
+	'?graphType=bar&widgetId=b473eef0-8eb5-4dd3-8089-c1817734084f&compositeQuery=%7B"id"%3A"f026c678-9abf-42af-a3dc-f73dc8cbb810"%2C"builder"%3A%7B"queryData"%3A%5B%7B"dataSource"%3A"metrics"%2C"queryName"%3A"A"%2C"aggregateOperator"%3A"count"%2C"aggregateAttribute"%3A%7B"id"%3A"----"%2C"dataType"%3A""%2C"key"%3A""%2C"type"%3A""%7D%2C"timeAggregation"%3A"rate"%2C"spaceAggregation"%3A"sum"%2C"filter"%3A%7B"expression"%3A""%7D%2C"aggregations"%3A%5B%7B"metricName"%3A""%2C"temporality"%3A""%2C"timeAggregation"%3A"count"%2C"spaceAggregation"%3A"sum"%2C"reduceTo"%3A"avg"%7D%5D%2C"functions"%3A%5B%5D%2C"filters"%3A%7B"items"%3A%5B%5D%2C"op"%3A"AND"%7D%2C"expression"%3A"A"%2C"disabled"%3Afalse%2C"stepInterval"%3Anull%2C"having"%3A%5B%5D%2C"limit"%3Anull%2C"orderBy"%3A%5B%5D%2C"groupBy"%3A%5B%5D%2C"legend"%3A""%2C"reduceTo"%3A"avg"%2C"source"%3A""%7D%5D%2C"queryFormulas"%3A%5B%5D%2C"queryTraceOperator"%3A%5B%5D%7D%2C"clickhouse_sql"%3A%5B%7B"name"%3A"A"%2C"legend"%3A""%2C"disabled"%3Afalse%2C"query"%3A""%7D%5D%2C"promql"%3A%5B%7B"name"%3A"A"%2C"query"%3A""%2C"legend"%3A""%2C"disabled"%3Afalse%7D%5D%2C"queryType"%3A"builder"%7D&relativeTime=30m';
+// Mocks
+jest.mock('uplot', () => ({
+	paths: { spline: jest.fn(), bars: jest.fn() },
+	default: jest.fn(() => ({ paths: { spline: jest.fn(), bars: jest.fn() } })),
+}));
+
+jest.mock('react-router-dom', () => ({
+	...jest.requireActual('react-router-dom'),
+	useLocation: (): { pathname: string; search: string } => ({
+		pathname: '',
+		search: MOCK_SEARCH_PARAMS,
+	}),
+}));
+
+jest.mock('hooks/useSafeNavigate', () => ({
+	useSafeNavigate: (): { safeNavigate: jest.Mock } => ({
+		safeNavigate: jest.fn(),
+	}),
+}));
+
+jest.mock('react-router-dom-v5-compat', () => ({
+	...jest.requireActual('react-router-dom-v5-compat'),
+	useSearchParams: jest.fn(),
+	useNavigationType: jest.fn(() => 'PUSH'),
+}));
 
 describe('placeWidgetAtBottom', () => {
 	it('should place widget at (0,0) when layout is empty', () => {
@@ -216,3 +257,55 @@ describe('placeWidgetBetweenRows', () => {
 		]);
 	});
 });
+
+describe('getDefaultWidgetData', () => {
+	it('should set stackedBarChart to true by default for new panel creation', () => {
+		const widgetId = 'test-widget-123';
+		const panelType = PANEL_TYPES.BAR;
+
+		const result = getDefaultWidgetData(widgetId, panelType);
+
+		expect(result.stackedBarChart).toBe(true);
+		expect(result.id).toBe(widgetId);
+		expect(result.panelTypes).toBe(panelType);
+	});
+});
+
+describe('Stacking bar in new panel', () => {
+	it('New panel should have stack bar - true by default', () => {
+		// Mock useSearchParams to return the expected values
+		(useSearchParams as jest.Mock).mockReturnValue([
+			new URLSearchParams(MOCK_SEARCH_PARAMS),
+			jest.fn(),
+		]);
+
+		const { container, getByText, getByRole } = render(
+			<I18nextProvider i18n={i18n}>
+				<DashboardProvider>
+					<PreferenceContextProvider>
+						<NewWidget
+							selectedGraph={PANEL_TYPES.BAR}
+							fillSpans={undefined}
+							yAxisUnit={undefined}
+						/>
+					</PreferenceContextProvider>
+				</DashboardProvider>
+			</I18nextProvider>,
+		);
+
+		// Verify label is present
+		expect(getByText('Stack series')).toBeInTheDocument();
+
+		// Verify section exists
+		const section = container.querySelector('section > .stack-chart');
+		expect(section).toBeInTheDocument();
+
+		// Verify switch is present and enabled (ant-switch-checked)
+		const switchBtn = section?.querySelector('.ant-switch');
+		expect(switchBtn).toBeInTheDocument();
+		expect(switchBtn).toHaveClass('ant-switch-checked');
+
+		// (Optional) More semantic: verify by role
+		expect(getByRole('switch')).toBeChecked();
+	});
+});
diff --git a/frontend/src/container/NewWidget/index.tsx b/frontend/src/container/NewWidget/index.tsx
index f5ad39688734..290b8d359b23 100644
--- a/frontend/src/container/NewWidget/index.tsx
+++ b/frontend/src/container/NewWidget/index.tsx
@@ -178,10 +178,6 @@ function NewWidget({
 		selectedWidget?.yAxisUnit || 'none',
 	);
 
-	const [stacked, setStacked] = useState<boolean>(
-		selectedWidget?.isStacked || false,
-	);
-
 	const [stackedBarChart, setStackedBarChart] = useState<boolean>(
 		selectedWidget?.stackedBarChart || false,
 	);
@@ -258,7 +254,6 @@ function NewWidget({
 				query: currentQuery,
 				title,
 				description,
-				isStacked: stacked,
 				opacity,
 				nullZeroValues: selectedNullZeroValue,
 				yAxisUnit,
@@ -292,7 +287,6 @@ function NewWidget({
 		selectedTracesFields,
 		softMax,
 		softMin,
-		stacked,
 		thresholds,
 		title,
 		yAxisUnit,
@@ -494,7 +488,6 @@ function NewWidget({
 								...(selectedWidget || ({} as Widgets)),
 								description: selectedWidget?.description || '',
 								timePreferance: selectedTime.enum,
-								isStacked: selectedWidget?.isStacked || false,
 								opacity: selectedWidget?.opacity || '1',
 								nullZeroValues: selectedWidget?.nullZeroValues || 'zero',
 								title: selectedWidget?.title,
@@ -524,7 +517,6 @@ function NewWidget({
 								...(selectedWidget || ({} as Widgets)),
 								description: selectedWidget?.description || '',
 								timePreferance: selectedTime.enum,
-								isStacked: selectedWidget?.isStacked || false,
 								opacity: selectedWidget?.opacity || '1',
 								nullZeroValues: selectedWidget?.nullZeroValues || 'zero',
 								title: selectedWidget?.title,
@@ -818,8 +810,6 @@ function NewWidget({
 							setTitle={setTitle}
 							description={description}
 							setDescription={setDescription}
-							stacked={stacked}
-							setStacked={setStacked}
 							stackedBarChart={stackedBarChart}
 							setStackedBarChart={setStackedBarChart}
 							opacity={opacity}
diff --git a/frontend/src/container/NewWidget/utils.ts b/frontend/src/container/NewWidget/utils.ts
index 1be37cf5a433..918324b22bab 100644
--- a/frontend/src/container/NewWidget/utils.ts
+++ b/frontend/src/container/NewWidget/utils.ts
@@ -543,7 +543,6 @@ export const getDefaultWidgetData = (
 	id,
 	title: '',
 	description: '',
-	isStacked: false,
 	nullZeroValues: '',
 	opacity: '',
 	panelTypes: name,
@@ -554,6 +553,7 @@ export const getDefaultWidgetData = (
 	timePreferance: 'GLOBAL_TIME',
 	softMax: null,
 	softMin: null,
+	stackedBarChart: true,
 	selectedLogFields: defaultLogsSelectedColumns.map((field) => ({
 		...field,
 		type: field.fieldContext ?? '',
diff --git a/frontend/src/container/PanelWrapper/__tests__/tablePanelWrapperHelper.ts b/frontend/src/container/PanelWrapper/__tests__/tablePanelWrapperHelper.ts
index f20df538a77e..ca44be8268ad 100644
--- a/frontend/src/container/PanelWrapper/__tests__/tablePanelWrapperHelper.ts
+++ b/frontend/src/container/PanelWrapper/__tests__/tablePanelWrapperHelper.ts
@@ -2,7 +2,6 @@ export const tablePanelWidgetQuery = {
 	id: '727533b0-7718-4f99-a1db-a1875649325c',
 	title: '',
 	description: '',
-	isStacked: false,
 	nullZeroValues: 'zero',
 	opacity: '1',
 	panelTypes: 'table',
diff --git a/frontend/src/container/PanelWrapper/__tests__/valuePanelWrapperHelper.ts b/frontend/src/container/PanelWrapper/__tests__/valuePanelWrapperHelper.ts
index 4a88f4b9f3cb..83ce4336e895 100644
--- a/frontend/src/container/PanelWrapper/__tests__/valuePanelWrapperHelper.ts
+++ b/frontend/src/container/PanelWrapper/__tests__/valuePanelWrapperHelper.ts
@@ -2,7 +2,6 @@ export const valuePanelWidget = {
 	id: 'b8b93086-ef01-47bf-9044-1e7abd583be4',
 	title: 'signoz latency in ms',
 	description: '',
-	isStacked: false,
 	nullZeroValues: 'zero',
 	opacity: '1',
 	panelTypes: 'value',
diff --git a/frontend/src/container/QueryTable/__test__/mocks.ts b/frontend/src/container/QueryTable/__test__/mocks.ts
index 8c2758508831..38fb2c92682f 100644
--- a/frontend/src/container/QueryTable/__test__/mocks.ts
+++ b/frontend/src/container/QueryTable/__test__/mocks.ts
@@ -236,7 +236,6 @@ export const WidgetHeaderProps: any = {
 		description: '',
 		fillSpans: false,
 		id: 'add65f0d-7662-4024-af51-da567759235d',
-		isStacked: false,
 		mergeAllActiveQueries: false,
 		nullZeroValues: 'zero',
 		opacity: '1',
diff --git a/frontend/src/hooks/dashboard/utils.ts b/frontend/src/hooks/dashboard/utils.ts
index f9f4267baf29..39bd00f2d1b7 100644
--- a/frontend/src/hooks/dashboard/utils.ts
+++ b/frontend/src/hooks/dashboard/utils.ts
@@ -52,7 +52,6 @@ export const addEmptyWidgetInDashboardJSONWithQuery = (
 					id: widgetId,
 					query,
 					description: '',
-					isStacked: false,
 					nullZeroValues: '',
 					opacity: '',
 					title: '',
diff --git a/frontend/src/lib/uPlotLib/utils/getSeriesData.ts b/frontend/src/lib/uPlotLib/utils/getSeriesData.ts
index 1ae9593474fd..8dff3d445c93 100644
--- a/frontend/src/lib/uPlotLib/utils/getSeriesData.ts
+++ b/frontend/src/lib/uPlotLib/utils/getSeriesData.ts
@@ -86,7 +86,7 @@ const getSeries = ({
 				? hiddenGraph[i]
 				: true,
 			label,
-			fill: panelType && panelType === PANEL_TYPES.BAR ? `${color}40` : undefined,
+			fill: panelType && panelType === PANEL_TYPES.BAR ? `${color}` : undefined,
 			stroke: color,
 			width: 2,
 			spanGaps: true,
diff --git a/frontend/src/lib/uPlotLib/utils/tests/getSeriesData.test.ts b/frontend/src/lib/uPlotLib/utils/tests/getSeriesData.test.ts
index 199df6f540fc..b0a900bf2b48 100644
--- a/frontend/src/lib/uPlotLib/utils/tests/getSeriesData.test.ts
+++ b/frontend/src/lib/uPlotLib/utils/tests/getSeriesData.test.ts
@@ -14,7 +14,7 @@ describe('Get Series Data', () => {
 		expect(seriesData.length).toBe(5);
 		expect(seriesData[1].label).toBe('firstLegend');
 		expect(seriesData[1].show).toBe(true);
-		expect(seriesData[1].fill).toBe('#C7158540');
+		expect(seriesData[1].fill).toBe('#C71585');
 		expect(seriesData[1].width).toBe(2);
 	});
 
diff --git a/frontend/src/pages/MessagingQueues/MQDetails/MetricPage/MetricPageUtil.ts b/frontend/src/pages/MessagingQueues/MQDetails/MetricPage/MetricPageUtil.ts
index 974b0c176493..fa477028a19b 100644
--- a/frontend/src/pages/MessagingQueues/MQDetails/MetricPage/MetricPageUtil.ts
+++ b/frontend/src/pages/MessagingQueues/MQDetails/MetricPage/MetricPageUtil.ts
@@ -39,7 +39,6 @@ export const getWidgetQueryBuilder = ({
 }: GetWidgetQueryPropsReturn): Widgets => ({
 	description: description || '',
 	id: id || uuid(),
-	isStacked: false,
 	nullZeroValues: nullZeroValues || '',
 	opacity: '1',
 	panelTypes,
diff --git a/frontend/src/types/api/dashboard/getAll.ts b/frontend/src/types/api/dashboard/getAll.ts
index 82dc5cc89541..3d8304e24aea 100644
--- a/frontend/src/types/api/dashboard/getAll.ts
+++ b/frontend/src/types/api/dashboard/getAll.ts
@@ -104,7 +104,6 @@ export interface ColumnUnit {
 	[key: string]: string;
 }
 export interface IBaseWidget {
-	isStacked: boolean;
 	id: string;
 	panelTypes: PANEL_TYPES;
 	title: ReactNode;