diff --git a/.changeset/afraid-flies-try.md b/.changeset/afraid-flies-try.md
new file mode 100644
index 0000000000..15d2e3942c
--- /dev/null
+++ b/.changeset/afraid-flies-try.md
@@ -0,0 +1,7 @@
+---
+'@backstage/plugin-cost-insights': patch
+---
+
+Move cost-insights data specific API types (non react) into an @backstage/plugin-cost-insights-common
+isomorphic package. This allows these types to be shared in any backend packages or other cost-insight
+modules.
diff --git a/plugins/cost-insights-common/.eslintrc.js b/plugins/cost-insights-common/.eslintrc.js
new file mode 100644
index 0000000000..e2a53a6ad2
--- /dev/null
+++ b/plugins/cost-insights-common/.eslintrc.js
@@ -0,0 +1 @@
+module.exports = require('@backstage/cli/config/eslint-factory')(__dirname);
diff --git a/plugins/cost-insights-common/CHANGELOG.md b/plugins/cost-insights-common/CHANGELOG.md
new file mode 100644
index 0000000000..d958aaa41b
--- /dev/null
+++ b/plugins/cost-insights-common/CHANGELOG.md
@@ -0,0 +1 @@
+# @backstage/plugin-cost-insights-common
diff --git a/plugins/cost-insights-common/README.md b/plugins/cost-insights-common/README.md
new file mode 100644
index 0000000000..5140701987
--- /dev/null
+++ b/plugins/cost-insights-common/README.md
@@ -0,0 +1,8 @@
+# Cost Insights Common
+
+Shared isomorphic code for the cost-insights plugin.
+
+## Links
+
+- [Frontend part of the plugin](https://github.com/backstage/backstage/tree/master/plugins/cost-insights)
+- [The Backstage homepage](https://backstage.io)
diff --git a/plugins/cost-insights-common/api-report.md b/plugins/cost-insights-common/api-report.md
new file mode 100644
index 0000000000..af95e8765b
--- /dev/null
+++ b/plugins/cost-insights-common/api-report.md
@@ -0,0 +1,185 @@
+## API Report File for "@backstage/plugin-cost-insights-common"
+
+> Do not edit this file. It is a report generated by [API Extractor](https://api-extractor.com/).
+
+```ts
+// Warning: (ae-missing-release-tag) "ChangeStatistic" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface ChangeStatistic {
+  // (undocumented)
+  amount: number;
+  // (undocumented)
+  ratio?: number;
+}
+
+// Warning: (ae-missing-release-tag) "ChartData" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ChartData = {
+  date: number;
+  trend: number;
+  dailyCost: number;
+  [key: string]: number;
+};
+
+// Warning: (ae-missing-release-tag) "Cost" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface Cost {
+  // (undocumented)
+  aggregation: DateAggregation[];
+  // (undocumented)
+  change?: ChangeStatistic;
+  // (undocumented)
+  groupedCosts?: Record<string, Cost[]>;
+  // (undocumented)
+  id: string;
+  // (undocumented)
+  trendline?: Trendline;
+}
+
+// Warning: (ae-missing-release-tag) "Currency" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface Currency {
+  // (undocumented)
+  kind: string | null;
+  // (undocumented)
+  label: string;
+  // (undocumented)
+  prefix?: string;
+  // (undocumented)
+  rate?: number;
+  // (undocumented)
+  unit: string;
+}
+
+// Warning: (ae-missing-release-tag) "DateAggregation" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type DateAggregation = {
+  date: string;
+  amount: number;
+};
+
+// Warning: (ae-missing-release-tag) "Duration" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public
+export enum Duration {
+  // (undocumented)
+  P30D = 'P30D',
+  // (undocumented)
+  P3M = 'P3M',
+  // (undocumented)
+  P7D = 'P7D',
+  // (undocumented)
+  P90D = 'P90D',
+}
+
+// Warning: (ae-missing-release-tag) "Entity" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface Entity {
+  // (undocumented)
+  aggregation: [number, number];
+  // (undocumented)
+  change: ChangeStatistic;
+  // (undocumented)
+  entities: Record<string, Entity[]>;
+  // (undocumented)
+  id: Maybe<string>;
+}
+
+// Warning: (ae-missing-release-tag) "Group" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type Group = {
+  id: string;
+};
+
+// Warning: (ae-missing-release-tag) "Maybe" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type Maybe<T> = T | null;
+
+// Warning: (ae-missing-release-tag) "Metric" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type Metric = {
+  kind: string;
+  name: string;
+  default: boolean;
+};
+
+// Warning: (ae-missing-release-tag) "MetricData" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface MetricData {
+  // (undocumented)
+  aggregation: DateAggregation[];
+  // (undocumented)
+  change: ChangeStatistic;
+  // (undocumented)
+  format: 'number' | 'currency';
+  // (undocumented)
+  id: string;
+}
+
+// Warning: (ae-missing-release-tag) "PageFilters" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface PageFilters {
+  // (undocumented)
+  duration: Duration;
+  // (undocumented)
+  group: Maybe<string>;
+  // (undocumented)
+  metric: string | null;
+  // (undocumented)
+  project: Maybe<string>;
+}
+
+// Warning: (ae-missing-release-tag) "Product" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface Product {
+  // (undocumented)
+  kind: string;
+  // (undocumented)
+  name: string;
+}
+
+// Warning: (ae-missing-release-tag) "ProductFilters" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type ProductFilters = Array<ProductPeriod>;
+
+// Warning: (ae-missing-release-tag) "ProductPeriod" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface ProductPeriod {
+  // (undocumented)
+  duration: Duration;
+  // (undocumented)
+  productType: string;
+}
+
+// Warning: (ae-missing-release-tag) "Project" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface Project {
+  // (undocumented)
+  id: string;
+  // (undocumented)
+  name?: string;
+}
+
+// Warning: (ae-missing-release-tag) "Trendline" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export type Trendline = {
+  slope: number;
+  intercept: number;
+};
+```
diff --git a/plugins/cost-insights-common/package.json b/plugins/cost-insights-common/package.json
new file mode 100644
index 0000000000..e950063efb
--- /dev/null
+++ b/plugins/cost-insights-common/package.json
@@ -0,0 +1,42 @@
+{
+  "name": "@backstage/plugin-cost-insights-common",
+  "description": "Common functionalities for the cost-insights plugin",
+  "version": "0.0.1",
+  "main": "src/index.ts",
+  "types": "src/index.ts",
+  "license": "Apache-2.0",
+  "private": false,
+  "publishConfig": {
+    "access": "public",
+    "main": "dist/index.cjs.js",
+    "module": "dist/index.esm.js",
+    "types": "dist/index.d.ts"
+  },
+  "backstage": {
+    "role": "common-library"
+  },
+  "homepage": "https://backstage.io",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/backstage/backstage",
+    "directory": "plugins/cost-insights-common"
+  },
+  "keywords": [
+    "backstage"
+  ],
+  "scripts": {
+    "build": "backstage-cli package build",
+    "lint": "backstage-cli package lint",
+    "test": "backstage-cli package test",
+    "prepack": "backstage-cli package prepack",
+    "postpack": "backstage-cli package postpack",
+    "clean": "backstage-cli package clean"
+  },
+  "dependencies": {},
+  "devDependencies": {
+    "@backstage/cli": "^0.18.0-next.1"
+  },
+  "files": [
+    "dist"
+  ]
+}
diff --git a/plugins/cost-insights-common/src/index.ts b/plugins/cost-insights-common/src/index.ts
new file mode 100644
index 0000000000..c3c76ccf17
--- /dev/null
+++ b/plugins/cost-insights-common/src/index.ts
@@ -0,0 +1,23 @@
+/*
+ * Copyright 2022 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Provides shared objects useful for interacting with the cost-insights plugin.
+ *
+ * @packageDocumentation
+ */
+
+export * from './types';
diff --git a/plugins/cost-insights-common/src/setupTests.ts b/plugins/cost-insights-common/src/setupTests.ts
new file mode 100644
index 0000000000..813cdeaae3
--- /dev/null
+++ b/plugins/cost-insights-common/src/setupTests.ts
@@ -0,0 +1,17 @@
+/*
+ * Copyright 2022 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export {};
diff --git a/plugins/cost-insights-common/src/types/ChangeStatistic.ts b/plugins/cost-insights-common/src/types/ChangeStatistic.ts
new file mode 100644
index 0000000000..079d9bcb07
--- /dev/null
+++ b/plugins/cost-insights-common/src/types/ChangeStatistic.ts
@@ -0,0 +1,24 @@
+/*
+ * Copyright 2020 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export interface ChangeStatistic {
+  // The ratio of change from one duration to another, expressed as: (newSum - oldSum) / oldSum
+  // If a ratio cannot be calculated - such as when a new or old sum is zero,
+  // the ratio can be omitted and where applicable, ∞ or -∞ will display based on amount.
+  ratio?: number;
+  // The actual USD change between time periods (can be negative if costs decreased)
+  amount: number;
+}
diff --git a/plugins/cost-insights/src/types/ChartData.tsx b/plugins/cost-insights-common/src/types/ChartData.ts
similarity index 100%
rename from plugins/cost-insights/src/types/ChartData.tsx
rename to plugins/cost-insights-common/src/types/ChartData.ts
diff --git a/plugins/cost-insights/src/types/Cost.ts b/plugins/cost-insights-common/src/types/Cost.ts
similarity index 100%
rename from plugins/cost-insights/src/types/Cost.ts
rename to plugins/cost-insights-common/src/types/Cost.ts
diff --git a/plugins/cost-insights-common/src/types/Currency.ts b/plugins/cost-insights-common/src/types/Currency.ts
new file mode 100644
index 0000000000..e82f0c9a52
--- /dev/null
+++ b/plugins/cost-insights-common/src/types/Currency.ts
@@ -0,0 +1,23 @@
+/*
+ * Copyright 2020 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export interface Currency {
+  kind: string | null;
+  label: string;
+  unit: string;
+  prefix?: string;
+  rate?: number;
+}
diff --git a/plugins/cost-insights/src/types/DateAggregation.ts b/plugins/cost-insights-common/src/types/DateAggregation.ts
similarity index 100%
rename from plugins/cost-insights/src/types/DateAggregation.ts
rename to plugins/cost-insights-common/src/types/DateAggregation.ts
diff --git a/plugins/cost-insights-common/src/types/Duration.ts b/plugins/cost-insights-common/src/types/Duration.ts
new file mode 100644
index 0000000000..25806a3346
--- /dev/null
+++ b/plugins/cost-insights-common/src/types/Duration.ts
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2020 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Time periods for cost comparison; slight abuse of ISO 8601 periods. We take P3M to mean
+ * 'last completed quarter', and P30D/P90D to be '[month|quarter] relative to today'. So if
+ * it's September 15, P3M represents costs for Q2 and P30D represents August 16 -
+ * September 15.
+ */
+export enum Duration {
+  P7D = 'P7D',
+  P30D = 'P30D',
+  P90D = 'P90D',
+  P3M = 'P3M',
+}
diff --git a/plugins/cost-insights/src/types/Entity.ts b/plugins/cost-insights-common/src/types/Entity.ts
similarity index 100%
rename from plugins/cost-insights/src/types/Entity.ts
rename to plugins/cost-insights-common/src/types/Entity.ts
diff --git a/plugins/cost-insights/src/types/Filters.ts b/plugins/cost-insights-common/src/types/Filters.ts
similarity index 100%
rename from plugins/cost-insights/src/types/Filters.ts
rename to plugins/cost-insights-common/src/types/Filters.ts
diff --git a/plugins/cost-insights/src/types/Group.ts b/plugins/cost-insights-common/src/types/Group.ts
similarity index 100%
rename from plugins/cost-insights/src/types/Group.ts
rename to plugins/cost-insights-common/src/types/Group.ts
diff --git a/plugins/cost-insights/src/types/Maybe.ts b/plugins/cost-insights-common/src/types/Maybe.ts
similarity index 100%
rename from plugins/cost-insights/src/types/Maybe.ts
rename to plugins/cost-insights-common/src/types/Maybe.ts
diff --git a/plugins/cost-insights/src/types/Metric.ts b/plugins/cost-insights-common/src/types/Metric.ts
similarity index 100%
rename from plugins/cost-insights/src/types/Metric.ts
rename to plugins/cost-insights-common/src/types/Metric.ts
diff --git a/plugins/cost-insights/src/types/MetricData.ts b/plugins/cost-insights-common/src/types/MetricData.ts
similarity index 100%
rename from plugins/cost-insights/src/types/MetricData.ts
rename to plugins/cost-insights-common/src/types/MetricData.ts
diff --git a/plugins/cost-insights/src/types/Product.ts b/plugins/cost-insights-common/src/types/Product.ts
similarity index 100%
rename from plugins/cost-insights/src/types/Product.ts
rename to plugins/cost-insights-common/src/types/Product.ts
diff --git a/plugins/cost-insights/src/types/Project.ts b/plugins/cost-insights-common/src/types/Project.ts
similarity index 100%
rename from plugins/cost-insights/src/types/Project.ts
rename to plugins/cost-insights-common/src/types/Project.ts
diff --git a/plugins/cost-insights/src/types/Trendline.ts b/plugins/cost-insights-common/src/types/Trendline.ts
similarity index 100%
rename from plugins/cost-insights/src/types/Trendline.ts
rename to plugins/cost-insights-common/src/types/Trendline.ts
diff --git a/plugins/cost-insights-common/src/types/index.ts b/plugins/cost-insights-common/src/types/index.ts
new file mode 100644
index 0000000000..877ace8f5f
--- /dev/null
+++ b/plugins/cost-insights-common/src/types/index.ts
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2020 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export * from './ChangeStatistic';
+export * from './ChartData';
+export * from './Cost';
+export * from './DateAggregation';
+export * from './Duration';
+export * from './Currency';
+export * from './Entity';
+export * from './Filters';
+export * from './Group';
+export * from './Maybe';
+export * from './MetricData';
+export * from './Metric';
+export * from './Product';
+export * from './Project';
+export * from './Trendline';
diff --git a/plugins/cost-insights/api-report.md b/plugins/cost-insights/api-report.md
index 75e1315502..8bde5729e7 100644
--- a/plugins/cost-insights/api-report.md
+++ b/plugins/cost-insights/api-report.md
@@ -9,10 +9,21 @@ import { ApiRef } from '@backstage/core-plugin-api';
 import { BackstagePalette } from '@backstage/theme';
 import { BackstagePlugin } from '@backstage/core-plugin-api';
 import { BackstageTheme } from '@backstage/theme';
+import { ChangeStatistic } from '@backstage/plugin-cost-insights-common';
 import { ContentRenderer } from 'recharts';
+import { Cost } from '@backstage/plugin-cost-insights-common';
+import { Currency } from '@backstage/plugin-cost-insights-common';
 import { Dispatch } from 'react';
+import { Duration } from '@backstage/plugin-cost-insights-common';
+import { Entity } from '@backstage/plugin-cost-insights-common';
 import { ForwardRefExoticComponent } from 'react';
+import { Group } from '@backstage/plugin-cost-insights-common';
+import { Maybe } from '@backstage/plugin-cost-insights-common';
+import { Metric } from '@backstage/plugin-cost-insights-common';
+import { MetricData } from '@backstage/plugin-cost-insights-common';
 import { PaletteOptions } from '@material-ui/core/styles/createPalette';
+import { Product } from '@backstage/plugin-cost-insights-common';
+import { Project } from '@backstage/plugin-cost-insights-common';
 import { PropsWithChildren } from 'react';
 import { ReactNode } from 'react';
 import { RechartsFunction } from 'recharts';
@@ -269,16 +280,6 @@ export type BarChartTooltipProps = {
   actions?: ReactNode;
 };
 
-// Warning: (ae-missing-release-tag) "ChangeStatistic" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
-//
-// @public (undocumented)
-export interface ChangeStatistic {
-  // (undocumented)
-  amount: number;
-  // (undocumented)
-  ratio?: number;
-}
-
 // Warning: (ae-missing-release-tag) "ChangeThreshold" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
 // @public (undocumented)
@@ -289,32 +290,6 @@ export enum ChangeThreshold {
   upper = 0.05,
 }
 
-// Warning: (ae-missing-release-tag) "ChartData" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
-//
-// @public (undocumented)
-export type ChartData = {
-  date: number;
-  trend: number;
-  dailyCost: number;
-  [key: string]: number;
-};
-
-// Warning: (ae-missing-release-tag) "Cost" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
-//
-// @public (undocumented)
-export interface Cost {
-  // (undocumented)
-  aggregation: DateAggregation[];
-  // (undocumented)
-  change?: ChangeStatistic;
-  // (undocumented)
-  groupedCosts?: Record<string, Cost[]>;
-  // (undocumented)
-  id: string;
-  // (undocumented)
-  trendline?: Trendline;
-}
-
 // Warning: (ae-missing-release-tag) "CostGrowth" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
 // @public (undocumented)
@@ -423,22 +398,6 @@ export interface CostInsightsThemeOptions extends PaletteOptions {
   palette: CostInsightsPaletteOptions;
 }
 
-// Warning: (ae-missing-release-tag) "Currency" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
-//
-// @public (undocumented)
-export interface Currency {
-  // (undocumented)
-  kind: string | null;
-  // (undocumented)
-  label: string;
-  // (undocumented)
-  prefix?: string;
-  // (undocumented)
-  rate?: number;
-  // (undocumented)
-  unit: string;
-}
-
 // Warning: (ae-missing-release-tag) "CurrencyType" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
 // @public (undocumented)
@@ -465,52 +424,16 @@ export enum DataKey {
   Previous = 'previous',
 }
 
-// Warning: (ae-missing-release-tag) "DateAggregation" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
-//
-// @public (undocumented)
-export type DateAggregation = {
-  date: string;
-  amount: number;
-};
-
 // Warning: (ae-missing-release-tag) "DEFAULT_DATE_FORMAT" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
 // @public (undocumented)
 export const DEFAULT_DATE_FORMAT = 'yyyy-LL-dd';
 
-// Warning: (ae-missing-release-tag) "Duration" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
-//
-// @public
-export enum Duration {
-  // (undocumented)
-  P30D = 'P30D',
-  // (undocumented)
-  P3M = 'P3M',
-  // (undocumented)
-  P7D = 'P7D',
-  // (undocumented)
-  P90D = 'P90D',
-}
-
 // Warning: (ae-missing-release-tag) "EngineerThreshold" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
 // @public (undocumented)
 export const EngineerThreshold = 0.5;
 
-// Warning: (ae-missing-release-tag) "Entity" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
-//
-// @public (undocumented)
-export interface Entity {
-  // (undocumented)
-  aggregation: [number, number];
-  // (undocumented)
-  change: ChangeStatistic;
-  // (undocumented)
-  entities: Record<string, Entity[]>;
-  // (undocumented)
-  id: Maybe<string>;
-}
-
 // Warning: (ae-missing-release-tag) "ExampleCostInsightsClient" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
 // @public (undocumented)
@@ -533,13 +456,6 @@ export class ExampleCostInsightsClient implements CostInsightsApi {
   getUserGroups(userId: string): Promise<Group[]>;
 }
 
-// Warning: (ae-missing-release-tag) "Group" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
-//
-// @public (undocumented)
-export type Group = {
-  id: string;
-};
-
 // Warning: (ae-missing-release-tag) "GrowthType" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
 // @public (undocumented)
@@ -602,34 +518,6 @@ export type LegendItemProps = {
 // @public (undocumented)
 export type Loading = Record<string, boolean>;
 
-// Warning: (ae-missing-release-tag) "Maybe" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
-//
-// @public (undocumented)
-export type Maybe<T> = T | null;
-
-// Warning: (ae-missing-release-tag) "Metric" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
-//
-// @public (undocumented)
-export type Metric = {
-  kind: string;
-  name: string;
-  default: boolean;
-};
-
-// Warning: (ae-missing-release-tag) "MetricData" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
-//
-// @public (undocumented)
-export interface MetricData {
-  // (undocumented)
-  aggregation: DateAggregation[];
-  // (undocumented)
-  change: ChangeStatistic;
-  // (undocumented)
-  format: 'number' | 'currency';
-  // (undocumented)
-  id: string;
-}
-
 // Warning: (ae-forgotten-export) The symbol "MockConfigProviderProps" needs to be exported by the entry point index.d.ts
 // Warning: (ae-missing-release-tag) "MockConfigProvider" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
@@ -648,35 +536,6 @@ export const MockCurrencyProvider: ({
   ...context
 }: MockCurrencyProviderProps) => JSX.Element;
 
-// Warning: (ae-missing-release-tag) "PageFilters" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
-//
-// @public (undocumented)
-export interface PageFilters {
-  // (undocumented)
-  duration: Duration;
-  // (undocumented)
-  group: Maybe<string>;
-  // (undocumented)
-  metric: string | null;
-  // (undocumented)
-  project: Maybe<string>;
-}
-
-// Warning: (ae-missing-release-tag) "Product" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
-//
-// @public (undocumented)
-export interface Product {
-  // (undocumented)
-  kind: string;
-  // (undocumented)
-  name: string;
-}
-
-// Warning: (ae-missing-release-tag) "ProductFilters" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
-//
-// @public (undocumented)
-export type ProductFilters = Array<ProductPeriod>;
-
 // Warning: (ae-missing-release-tag) "ProductInsightsOptions" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
 // @public (undocumented)
@@ -687,26 +546,6 @@ export type ProductInsightsOptions = {
   project: Maybe<string>;
 };
 
-// Warning: (ae-missing-release-tag) "ProductPeriod" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
-//
-// @public (undocumented)
-export interface ProductPeriod {
-  // (undocumented)
-  duration: Duration;
-  // (undocumented)
-  productType: string;
-}
-
-// Warning: (ae-missing-release-tag) "Project" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
-//
-// @public (undocumented)
-export interface Project {
-  // (undocumented)
-  id: string;
-  // (undocumented)
-  name?: string;
-}
-
 // Warning: (ae-missing-release-tag) "ProjectGrowthAlert" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
 // @public
@@ -763,14 +602,6 @@ export type TooltipItem = {
   value: string;
 };
 
-// Warning: (ae-missing-release-tag) "Trendline" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
-//
-// @public (undocumented)
-export type Trendline = {
-  slope: number;
-  intercept: number;
-};
-
 // Warning: (ae-missing-release-tag) "UnlabeledDataflowAlert" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
 // @public
@@ -817,4 +648,6 @@ export interface UnlabeledDataflowData {
   // (undocumented)
   unlabeledCost: number;
 }
+
+export * from '@backstage/plugin-cost-insights-common';
 ```
diff --git a/plugins/cost-insights/package.json b/plugins/cost-insights/package.json
index e2555d961f..4801a2002b 100644
--- a/plugins/cost-insights/package.json
+++ b/plugins/cost-insights/package.json
@@ -38,6 +38,7 @@
     "@backstage/config": "^1.0.1",
     "@backstage/core-components": "^0.9.6-next.1",
     "@backstage/core-plugin-api": "^1.0.3",
+    "@backstage/plugin-cost-insights-common": "^0.0.1",
     "@backstage/theme": "^0.2.16-next.0",
     "@material-ui/core": "^4.12.2",
     "@material-ui/icons": "^4.9.1",
diff --git a/plugins/cost-insights/src/types/Alert.ts b/plugins/cost-insights/src/types/Alert.ts
index 2f220be0e6..a04becada1 100644
--- a/plugins/cost-insights/src/types/Alert.ts
+++ b/plugins/cost-insights/src/types/Alert.ts
@@ -13,10 +13,13 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 import { ForwardRefExoticComponent, RefAttributes } from 'react';
-import { ChangeStatistic } from './ChangeStatistic';
-import { Duration } from './Duration';
-import { Maybe } from './Maybe';
+import {
+  ChangeStatistic,
+  Duration,
+  Maybe,
+} from '@backstage/plugin-cost-insights-common';
 
 /**
  * Generic alert type with required fields for display. The `element` field will be rendered in
diff --git a/plugins/cost-insights/src/types/ChangeStatistic.ts b/plugins/cost-insights/src/types/ChangeStatistic.ts
index 6e85335a67..8264b23c8d 100644
--- a/plugins/cost-insights/src/types/ChangeStatistic.ts
+++ b/plugins/cost-insights/src/types/ChangeStatistic.ts
@@ -14,15 +14,6 @@
  * limitations under the License.
  */
 
-export interface ChangeStatistic {
-  // The ratio of change from one duration to another, expressed as: (newSum - oldSum) / oldSum
-  // If a ratio cannot be calculated - such as when a new or old sum is zero,
-  // the ratio can be omitted and where applicable, ∞ or -∞ will display based on amount.
-  ratio?: number;
-  // The actual USD change between time periods (can be negative if costs decreased)
-  amount: number;
-}
-
 export const EngineerThreshold = 0.5;
 
 export enum ChangeThreshold {
diff --git a/plugins/cost-insights/src/types/Currency.ts b/plugins/cost-insights/src/types/Currency.ts
index 5cc5756dfc..0316e8f90e 100644
--- a/plugins/cost-insights/src/types/Currency.ts
+++ b/plugins/cost-insights/src/types/Currency.ts
@@ -14,14 +14,6 @@
  * limitations under the License.
  */
 
-export interface Currency {
-  kind: string | null;
-  label: string;
-  unit: string;
-  prefix?: string;
-  rate?: number;
-}
-
 export enum CurrencyType {
   USD = 'USD',
   CarbonOffsetTons = 'CARBON_OFFSET_TONS',
diff --git a/plugins/cost-insights/src/types/Duration.ts b/plugins/cost-insights/src/types/Duration.ts
index 94297ac00a..c5d9c83f6e 100644
--- a/plugins/cost-insights/src/types/Duration.ts
+++ b/plugins/cost-insights/src/types/Duration.ts
@@ -14,17 +14,4 @@
  * limitations under the License.
  */
 
-/**
- * Time periods for cost comparison; slight abuse of ISO 8601 periods. We take P3M to mean
- * 'last completed quarter', and P30D/P90D to be '[month|quarter] relative to today'. So if
- * it's September 15, P3M represents costs for Q2 and P30D represents August 16 -
- * September 15.
- */
-export enum Duration {
-  P7D = 'P7D',
-  P30D = 'P30D',
-  P90D = 'P90D',
-  P3M = 'P3M',
-}
-
 export const DEFAULT_DATE_FORMAT = 'yyyy-LL-dd';
diff --git a/plugins/cost-insights/src/types/index.ts b/plugins/cost-insights/src/types/index.ts
index 5f090cc7eb..b3a06f248d 100644
--- a/plugins/cost-insights/src/types/index.ts
+++ b/plugins/cost-insights/src/types/index.ts
@@ -14,22 +14,15 @@
  * limitations under the License.
  */
 
+// @deprecated - use types from `@backstage/plugin-cost-insights-common` instead.
+export * from '@backstage/plugin-cost-insights-common';
+
+// TODO: Split some of these up into `@backstage/plugin-cost-insights-react` for presentation types
+//       and `@backstage/plugin-cost-insights-common` for data transfer object types.
 export * from './Alert';
 export * from './ChangeStatistic';
-export * from './ChartData';
-export * from './Cost';
-export * from './DateAggregation';
-export * from './Duration';
 export * from './Currency';
-export * from './Entity';
+export * from './Duration';
 export * from './Icon';
-export * from './Filters';
-export * from './Group';
 export * from './Loading';
-export * from './Maybe';
-export * from './MetricData';
-export * from './Metric';
-export * from './Product';
-export * from './Project';
 export * from './Theme';
-export * from './Trendline';