diff --git a/packages/models/src/config/behaviors/api.ts b/packages/models/src/config/behaviors/api.ts
index 9fbb4efb..43ff6411 100644
--- a/packages/models/src/config/behaviors/api.ts
+++ b/packages/models/src/config/behaviors/api.ts
@@ -9,6 +9,7 @@ import { addUrlTagToProvideReactCache } from "../../react/asyncResourceInvalidat
 import { apiArticleBehaviors } from "../../article/Article/behaviors/index.js";
 import { apiContractBehaviors } from "../../contract/Contract/behaviors/index.js";
 import { apiContractItemBehaviors } from "../../contract/ContractItem/behaviors/index.js";
+import { apiInvoiceBehaviors } from "../../invoice/Invoice/behaviors/index.js";
 
 class ApiSetupState {
   private _client: MittwaldAPIV2Client | undefined;
@@ -28,6 +29,7 @@ class ApiSetupState {
     config.behaviors.server = apiServerBehaviors(client);
     config.behaviors.customer = apiCustomerBehaviors(client);
     config.behaviors.ingress = apiIngressBehaviors(client);
+    config.behaviors.invoice = apiInvoiceBehaviors(client);
     config.behaviors.appInstallation = apiAppInstallationBehaviors(client);
     config.behaviors.contract = apiContractBehaviors(client);
     config.behaviors.contractItem = apiContractItemBehaviors(client);
diff --git a/packages/models/src/config/config.ts b/packages/models/src/config/config.ts
index c20a52c3..39b03a53 100644
--- a/packages/models/src/config/config.ts
+++ b/packages/models/src/config/config.ts
@@ -6,6 +6,7 @@ import { ContractBehaviors } from "../contract/Contract/behaviors/index.js";
 import { AppInstallationBehaviors } from "../app/AppInstallation/behaviors/index.js";
 import { ContractItemBehaviors } from "../contract/ContractItem/behaviors/index.js";
 import { ArticleBehaviors } from "../article/Article/behaviors/index.js";
+import { InvoiceBehaviors } from "../invoice/Invoice/behaviors/index.js";
 
 interface Config {
   defaultPaginationLimit: number;
@@ -17,6 +18,7 @@ interface Config {
     server: ServerBehaviors;
     customer: CustomerBehaviors;
     ingress: IngressBehaviors;
+    invoice: InvoiceBehaviors;
     appInstallation: AppInstallationBehaviors;
   };
 }
@@ -31,6 +33,7 @@ export const config: Config = {
     server: undefined as unknown as ServerBehaviors,
     customer: undefined as unknown as CustomerBehaviors,
     ingress: undefined as unknown as IngressBehaviors,
+    invoice: undefined as unknown as InvoiceBehaviors,
     appInstallation: undefined as unknown as AppInstallationBehaviors,
   },
 };
diff --git a/packages/models/src/invoice/Invoice/Invoice.ts b/packages/models/src/invoice/Invoice/Invoice.ts
new file mode 100644
index 00000000..089eb908
--- /dev/null
+++ b/packages/models/src/invoice/Invoice/Invoice.ts
@@ -0,0 +1,139 @@
+import {
+  InvoiceListItemData,
+  InvoiceData,
+  InvoiceFileAccessTokenData,
+  InvoiceListQueryModelData,
+  InvoiceListQueryData,
+} from "./types.js";
+import { config } from "../../config/config.js";
+import { classes } from "polytype";
+import { DataModel } from "../../base/DataModel.js";
+import assertObjectFound from "../../base/assertObjectFound.js";
+import { provideReact } from "../../react/provideReact.js";
+import { ReferenceModel } from "../../base/ReferenceModel.js";
+import { ListDataModel, ListQueryModel } from "../../base/index.js";
+
+export class Invoice extends ReferenceModel {
+  public static ofId(id: string): Invoice {
+    return new Invoice(id);
+  }
+
+  public static find = provideReact(
+    async (id: string): Promise<InvoiceDetailed | undefined> => {
+      const data = await config.behaviors.invoice.find(id);
+
+      if (data !== undefined) {
+        return new InvoiceDetailed(data);
+      }
+    },
+  );
+
+  public static get = provideReact(
+    async (id: string): Promise<InvoiceDetailed> => {
+      const project = await this.find(id);
+      assertObjectFound(project, this, id);
+      return project;
+    },
+  );
+
+  public static query(query: InvoiceListQueryModelData) {
+    return new InvoiceListQuery(query);
+  }
+
+  public static requestFileAccessToken = provideReact(
+    async (
+      invoiceId: string,
+      customerId: string,
+    ): Promise<InvoiceFileAccessTokenData> => {
+      return await config.behaviors.invoice.requestFileAccessToken(
+        invoiceId,
+        customerId,
+      );
+    },
+  );
+}
+
+class InvoiceCommon extends classes(
+  DataModel<InvoiceListItemData | InvoiceData>,
+  Invoice,
+) {
+  public constructor(data: InvoiceListItemData | InvoiceData) {
+    super([data], [data.customerId]);
+  }
+}
+
+export class InvoiceDetailed extends classes(
+  InvoiceCommon,
+  DataModel<InvoiceData>,
+) {
+  public constructor(data: InvoiceData) {
+    super([data]);
+  }
+}
+
+export class InvoiceListItem extends classes(
+  InvoiceCommon,
+  DataModel<InvoiceListItemData>,
+) {
+  public constructor(data: InvoiceListItemData) {
+    super([data]);
+  }
+}
+
+export class InvoiceListQuery extends ListQueryModel<InvoiceListQueryModelData> {
+  public constructor(query: InvoiceListQueryModelData) {
+    super(query);
+  }
+
+  public refine(query: InvoiceListQueryData) {
+    return new InvoiceListQuery({
+      ...this.query,
+      ...query,
+    });
+  }
+
+  public execute = provideReact(async () => {
+    const { customer, ...query } = this.query;
+
+    const customerId = customer.id;
+    const request = {
+      customerId: customerId,
+      queryParameters: {
+        limit: config.defaultPaginationLimit,
+        ...query,
+      },
+    };
+    const { items, totalCount } = await config.behaviors.invoice.list(request);
+
+    return new InvoiceList(
+      this.query,
+      items.map((d) => new InvoiceListItem(d)),
+      totalCount,
+    );
+  }, [this.queryId]);
+
+  public getTotalCount = provideReact(async () => {
+    const { totalCount } = await this.refine({ limit: 1 }).execute();
+    return totalCount;
+  }, [this.queryId]);
+
+  public findOneAndOnly = provideReact(async () => {
+    const { items, totalCount } = await this.refine({ limit: 1 }).execute();
+    if (totalCount === 1) {
+      return items[0];
+    }
+  }, [this.queryId]);
+}
+
+export class InvoiceList extends classes(
+  InvoiceListQuery,
+  ListDataModel<InvoiceListItem>,
+) {
+  public constructor(
+    query: InvoiceListQueryModelData,
+    invoices: InvoiceListItem[],
+    totalCount: number,
+  ) {
+    super([query], [invoices, totalCount]);
+  }
+}
diff --git a/packages/models/src/invoice/Invoice/behaviors/api.ts b/packages/models/src/invoice/Invoice/behaviors/api.ts
new file mode 100644
index 00000000..1f355b91
--- /dev/null
+++ b/packages/models/src/invoice/Invoice/behaviors/api.ts
@@ -0,0 +1,40 @@
+import {
+  assertStatus,
+  MittwaldAPIV2Client,
+  extractTotalCountHeader,
+  assertOneOfStatus,
+} from "@mittwald/api-client";
+import { InvoiceBehaviors } from "./types.js";
+
+export const apiInvoiceBehaviors = (
+  client: MittwaldAPIV2Client,
+): InvoiceBehaviors => ({
+  find: async (invoiceId) => {
+    const response = await client.contract.invoiceDetail({
+      invoiceId,
+    });
+
+    if (response.status === 200) {
+      return response.data;
+    }
+    assertOneOfStatus(response, [404, 429]);
+  },
+
+  list: async (request) => {
+    const response = await client.contract.invoiceListCustomerInvoices(request);
+    assertStatus(response, 200);
+    return {
+      items: response.data,
+      totalCount: extractTotalCountHeader(response),
+    };
+  },
+
+  requestFileAccessToken: async (invoiceId, customerId) => {
+    const response = await client.contract.invoiceGetFileAccessToken({
+      invoiceId,
+      customerId,
+    });
+    assertStatus(response, 200);
+    return response.data;
+  },
+});
diff --git a/packages/models/src/invoice/Invoice/behaviors/index.ts b/packages/models/src/invoice/Invoice/behaviors/index.ts
new file mode 100644
index 00000000..a7b74f7c
--- /dev/null
+++ b/packages/models/src/invoice/Invoice/behaviors/index.ts
@@ -0,0 +1,2 @@
+export * from "./api.js";
+export * from "./types.js";
diff --git a/packages/models/src/invoice/Invoice/behaviors/types.ts b/packages/models/src/invoice/Invoice/behaviors/types.ts
new file mode 100644
index 00000000..3c9a9783
--- /dev/null
+++ b/packages/models/src/invoice/Invoice/behaviors/types.ts
@@ -0,0 +1,21 @@
+import {
+  InvoiceData,
+  InvoiceFileAccessTokenData,
+  InvoiceListItemData,
+  InvoiceListQueryData,
+} from "../types.js";
+import { QueryResponseData } from "../../../base/index.js";
+
+export interface InvoiceBehaviors {
+  find: (invoiceId: string) => Promise<InvoiceData | undefined>;
+
+  list: (request: {
+    customerId: string;
+    queryParameters?: InvoiceListQueryData;
+  }) => Promise<QueryResponseData<InvoiceListItemData>>;
+
+  requestFileAccessToken: (
+    invoiceId: string,
+    customerId: string,
+  ) => Promise<InvoiceFileAccessTokenData>;
+}
diff --git a/packages/models/src/invoice/Invoice/index.ts b/packages/models/src/invoice/Invoice/index.ts
new file mode 100644
index 00000000..9b23d19b
--- /dev/null
+++ b/packages/models/src/invoice/Invoice/index.ts
@@ -0,0 +1,2 @@
+export * from "./Invoice.js";
+export * from "./types.js";
diff --git a/packages/models/src/invoice/Invoice/types.ts b/packages/models/src/invoice/Invoice/types.ts
new file mode 100644
index 00000000..c982d64f
--- /dev/null
+++ b/packages/models/src/invoice/Invoice/types.ts
@@ -0,0 +1,20 @@
+import { MittwaldAPIV2 } from "@mittwald/api-client";
+import { Customer } from "../../customer/index.js";
+
+export type InvoiceListQueryData =
+  MittwaldAPIV2.Paths.V2CustomersCustomerIdInvoices.Get.Parameters.Query;
+
+export type InvoiceData = MittwaldAPIV2.Operations.InvoiceDetail.ResponseData;
+
+export type InvoiceListItemData =
+  MittwaldAPIV2.Operations.InvoiceListCustomerInvoices.ResponseData[number];
+
+export type InvoiceFileAccessTokenData =
+  MittwaldAPIV2.Operations.InvoiceGetFileAccessToken.ResponseData;
+
+export type InvoiceListQueryModelData = Omit<
+  InvoiceListQueryData,
+  "customerId"
+> & {
+  customer: Customer;
+};
diff --git a/packages/models/src/invoice/index.ts b/packages/models/src/invoice/index.ts
new file mode 100644
index 00000000..fe7658c7
--- /dev/null
+++ b/packages/models/src/invoice/index.ts
@@ -0,0 +1 @@
+export * from "./Invoice/index.js";