diff --git a/frontend/src/queries/nodes/DataVisualization/Components/seriesBreakdownLogic.test.ts b/frontend/src/queries/nodes/DataVisualization/Components/seriesBreakdownLogic.test.ts
new file mode 100644
index 00000000000..b57c0c8b89e
--- /dev/null
+++ b/frontend/src/queries/nodes/DataVisualization/Components/seriesBreakdownLogic.test.ts
@@ -0,0 +1,318 @@
+import { expectLogic } from 'kea-test-utils'
+import { featureFlagLogic } from 'lib/logic/featureFlagLogic'
+
+import { DataVisualizationNode, NodeKind } from '~/queries/schema'
+import { initKeaTests } from '~/test/init'
+import { ChartDisplayType } from '~/types'
+
+import { dataNodeLogic } from '../../DataNode/dataNodeLogic'
+import { dataVisualizationLogic, DataVisualizationLogicProps } from '../dataVisualizationLogic'
+import { seriesBreakdownLogic } from './seriesBreakdownLogic'
+
+const testUniqueKey = 'testUniqueKey'
+
+const initialQuery: DataVisualizationNode = {
+    kind: NodeKind.DataVisualizationNode,
+    source: {
+        kind: NodeKind.HogQLQuery,
+        query: `select event, properties.$browser as browser, count() as total_count from events group by 1, 2`,
+    },
+    tableSettings: {
+        columns: [
+            {
+                column: 'event',
+                settings: {
+                    formatting: {
+                        prefix: '',
+                        suffix: '',
+                    },
+                },
+            },
+            {
+                column: 'browser',
+                settings: {
+                    formatting: {
+                        prefix: '',
+                        suffix: '',
+                    },
+                },
+            },
+            {
+                column: 'total_count',
+                settings: {
+                    formatting: {
+                        prefix: '',
+                        suffix: '',
+                    },
+                },
+            },
+        ],
+        conditionalFormatting: [],
+    },
+    chartSettings: { goalLines: undefined },
+}
+
+// globalQuery represents the query object that is passed into the data
+// visualization logic and series breakdown logic it is modified by calls to
+// setQuery so we want to ensure this is updated correctly
+let globalQuery = { ...initialQuery }
+
+const dummyDataVisualizationLogicProps: DataVisualizationLogicProps = {
+    key: testUniqueKey,
+    query: globalQuery,
+    setQuery: (query) => {
+        globalQuery = query
+    },
+    insightLogicProps: {
+        cachedInsight: null,
+        dashboardItemId: 'new-test-SQL',
+    },
+}
+
+describe('seriesBreakdownLogic', () => {
+    let logic: ReturnType<typeof seriesBreakdownLogic.build>
+    let builtDataVizLogic: ReturnType<typeof dataVisualizationLogic.build>
+
+    beforeEach(() => {
+        initKeaTests()
+
+        // Mock prefersColorSchemeMedia to avoid TypeError
+        // (this is a known issue with jest and window.matchMedia)
+        // and is used by themeLogic
+        Object.defineProperty(window, 'matchMedia', {
+            writable: true,
+            value: jest.fn().mockImplementation((query) => ({
+                matches: false,
+                media: query,
+                onchange: null,
+                addEventListener: jest.fn(),
+                removeEventListener: jest.fn(),
+                addListener: jest.fn(), // deprecated
+                removeListener: jest.fn(), // deprecated
+                dispatchEvent: jest.fn(),
+            })),
+        })
+
+        featureFlagLogic.mount()
+
+        // ensure we reset the globalQuery state before each test
+        globalQuery = { ...initialQuery }
+
+        builtDataVizLogic = dataVisualizationLogic(dummyDataVisualizationLogicProps)
+        builtDataVizLogic.mount()
+    })
+
+    afterEach(() => {
+        logic?.unmount()
+        builtDataVizLogic?.unmount()
+    })
+
+    it('sets the correct values after mounting', async () => {
+        logic = seriesBreakdownLogic({ key: testUniqueKey })
+        logic.mount()
+
+        await expectLogic(logic).toMatchValues({
+            showSeriesBreakdown: false,
+            selectedSeriesBreakdownColumn: null,
+        })
+
+        expect(globalQuery).toEqual({
+            ...initialQuery,
+            chartSettings: {
+                goalLines: undefined,
+                seriesBreakdownColumn: null,
+            },
+        })
+    })
+
+    // this was an example of a previous bug where the series breakdown logic
+    // would mount and override the existing query settings
+    it('does not override existing query settings after mounting', async () => {
+        // set visualization type to line graph and ensure this persists
+        builtDataVizLogic.actions.setVisualizationType(ChartDisplayType.ActionsLineGraph)
+        expect(globalQuery.display).toEqual(ChartDisplayType.ActionsLineGraph)
+
+        logic = seriesBreakdownLogic({ key: testUniqueKey })
+        logic.mount()
+
+        await expectLogic(logic).toMatchValues({
+            showSeriesBreakdown: false,
+            selectedSeriesBreakdownColumn: null,
+        })
+
+        expect(globalQuery).toEqual({
+            ...initialQuery,
+            chartSettings: {
+                goalLines: undefined,
+                seriesBreakdownColumn: null,
+            },
+            display: ChartDisplayType.ActionsLineGraph,
+        })
+    })
+
+    it('adds a series breakdown', async () => {
+        logic = seriesBreakdownLogic({ key: testUniqueKey })
+        logic.mount()
+
+        logic.actions.addSeriesBreakdown('test_column')
+        await expectLogic(logic).toMatchValues({
+            showSeriesBreakdown: true,
+            selectedSeriesBreakdownColumn: 'test_column',
+        })
+
+        expect(globalQuery).toEqual({
+            ...initialQuery,
+            chartSettings: {
+                goalLines: undefined,
+                seriesBreakdownColumn: 'test_column',
+            },
+        })
+    })
+
+    it('adds a series breakdown after mount if one already selected in query', async () => {
+        builtDataVizLogic.actions.setQuery({
+            ...initialQuery,
+            chartSettings: {
+                goalLines: undefined,
+                seriesBreakdownColumn: 'test_column',
+            },
+        })
+
+        logic = seriesBreakdownLogic({ key: testUniqueKey })
+        logic.mount()
+
+        await expectLogic(logic).toMatchValues({
+            showSeriesBreakdown: true,
+            selectedSeriesBreakdownColumn: 'test_column',
+        })
+
+        expect(globalQuery).toEqual({
+            ...initialQuery,
+            chartSettings: {
+                goalLines: undefined,
+                seriesBreakdownColumn: 'test_column',
+            },
+        })
+    })
+
+    it('deletes a series breakdown', async () => {
+        logic = seriesBreakdownLogic({ key: testUniqueKey })
+        logic.mount()
+
+        logic.actions.addSeriesBreakdown('test_column')
+
+        logic.actions.deleteSeriesBreakdown()
+        await expectLogic(logic).toMatchValues({
+            showSeriesBreakdown: false,
+            selectedSeriesBreakdownColumn: null,
+        })
+
+        expect(globalQuery).toEqual({
+            ...initialQuery,
+            chartSettings: {
+                goalLines: undefined,
+                seriesBreakdownColumn: null,
+            },
+        })
+    })
+
+    it('deletes a series breakdown when clearAxis is called', async () => {
+        logic = seriesBreakdownLogic({ key: testUniqueKey })
+        logic.mount()
+
+        logic.actions.addSeriesBreakdown('test_column')
+
+        logic.actions.clearAxis()
+        await expectLogic(logic).toMatchValues({
+            showSeriesBreakdown: false,
+            selectedSeriesBreakdownColumn: null,
+        })
+
+        expect(globalQuery).toEqual({
+            ...initialQuery,
+            tableSettings: {
+                columns: [],
+                conditionalFormatting: [],
+            },
+            chartSettings: {
+                goalLines: undefined,
+            },
+        })
+    })
+
+    it('computes the correct data', async () => {
+        logic = seriesBreakdownLogic({ key: testUniqueKey })
+        logic.mount()
+
+        const builtDataNodeLogic = dataNodeLogic({
+            key: testUniqueKey,
+            query: globalQuery.source,
+        })
+        builtDataNodeLogic.mount()
+        builtDataNodeLogic.actions.setResponse({
+            results: [
+                ['signed_up', 'Safari', 11],
+                ['signed_up', 'Firefox', 22],
+                ['signed_up', 'Chrome', 59],
+                ['logged_out', 'Safari', 32],
+                ['downloaded_file', 'Firefox', 820],
+                ['logged_out', 'Chrome', 173],
+                ['downloaded_file', 'Chrome', 2218],
+                ['downloaded_file', 'Safari', 282],
+                ['logged_out', 'Firefox', 60],
+            ],
+            columns: ['event', 'browser', 'total_count'],
+            types: [
+                ['event', 'String'],
+                ['browser', 'Nullable(String)'],
+                ['total_count', 'UInt64'],
+            ],
+        })
+
+        builtDataVizLogic.actions.updateXSeries('event')
+
+        logic.actions.addSeriesBreakdown('browser')
+
+        await expectLogic(logic).toMatchValues({
+            breakdownColumnValues: ['Safari', 'Firefox', 'Chrome'],
+            seriesBreakdownData: {
+                xData: {
+                    column: {
+                        name: 'event',
+                        type: { name: 'STRING', isNumerical: false },
+                        label: 'event - String',
+                        dataIndex: 0,
+                    },
+                    data: ['signed_up', 'logged_out', 'downloaded_file'],
+                },
+                seriesData: [
+                    {
+                        name: 'Safari',
+                        data: [11, 32, 282],
+                        settings: {
+                            formatting: { prefix: '', suffix: '' },
+                            display: { displayType: undefined, yAxisPosition: undefined },
+                        },
+                    },
+                    {
+                        name: 'Firefox',
+                        data: [22, 60, 820],
+                        settings: {
+                            formatting: { prefix: '', suffix: '' },
+                            display: { displayType: undefined, yAxisPosition: undefined },
+                        },
+                    },
+                    {
+                        name: 'Chrome',
+                        data: [59, 173, 2218],
+                        settings: {
+                            formatting: { prefix: '', suffix: '' },
+                            display: { displayType: undefined, yAxisPosition: undefined },
+                        },
+                    },
+                ],
+                isUnaggregated: false,
+            },
+        })
+    })
+})