diff --git a/src/stores.ts b/src/stores.ts
new file mode 100644
index 0000000..df4a672
--- /dev/null
+++ b/src/stores.ts
@@ -0,0 +1,184 @@
+import { createContext } from "solid-js";
+import { createStore as createStore_ } from "solid-js/store";
+import { addressSchema, createAddress } from "./components/Address";
+import { createLocalStore as createLocalStore_ } from "./localStore";
+import { getUnixTime } from "date-fns";
+import z, { Infer } from "myzod";
+
+export const POSITION_TYPE_QUANTITY = "QUANTITY";
+export const POSITION_TYPE_AGILE = "AGILE";
+
+export const positionSchema = z.object({
+  id: z.number(),
+  name: z.string(),
+  enabled: z.boolean(),
+  type: z.literals(POSITION_TYPE_QUANTITY, POSITION_TYPE_AGILE),
+  agilePointsMin: z.number().optional(),
+  agilePointsMax: z.number().optional(),
+  agileRiskFactor: z.number().optional(),
+  number: z.string().optional(),
+  description: z.string().optional(),
+  quantity: z.number(),
+  fixedDiscountPrice: z.number().optional(),
+  itemPrice: z.number().optional(),
+});
+
+export type Position = Infer<typeof positionSchema>;
+
+export const PRINT_TYPE_OFFER = "OFFER";
+export const PRINT_TYPE_CONFIRMATION = "CONFIRMATION";
+export const PRINT_TYPE_INVOICE = "INVOICE";
+
+export const createUiStore = () =>
+  createStore_({
+    printType: PRINT_TYPE_INVOICE as
+      | typeof PRINT_TYPE_OFFER
+      | typeof PRINT_TYPE_CONFIRMATION
+      | typeof PRINT_TYPE_INVOICE,
+    selectedPosition: undefined as undefined | number,
+  });
+export type UiStore = ReturnType<typeof createUiStore>;
+export const UiStoreContext = createContext<UiStore>();
+
+export const storeSchema = z.object({
+  version: z.number(),
+  project: z.object({
+    orderNumber: z.string(),
+    projectNumber: z.string(),
+    deliveryNumber: z.string(),
+    deliveryDate: z.number().optional(),
+    date: z.number(),
+    preface: z.string().optional(),
+    conclusion: z.string().optional(),
+  }),
+  invoice: z.object({
+    reference: z.string(),
+    message: z.string(),
+  }),
+  fullWidthInvoice: z.boolean(),
+  useCustomerAlternativeAddress: z.boolean(),
+  customer: z.object({
+    customerNumber: z.string(),
+    vatNumber: z.string(),
+    alternativeAddress: addressSchema,
+    debtorAddress: addressSchema,
+  }),
+  defaultItemPrice: z.number(),
+  agileRiskFactor: z.number(),
+  agileHoursPerStoryPoint: z.number(),
+  defaultPositionType: z.literals(POSITION_TYPE_QUANTITY, POSITION_TYPE_AGILE),
+  positions: z.array(positionSchema),
+});
+export type StoreObject = Infer<typeof storeSchema>;
+
+export const createStore = () =>
+  createStore_<StoreObject>({
+    version: 1,
+    project: {
+      orderNumber: "",
+      projectNumber: "",
+      deliveryNumber: "",
+      date: getUnixTime(new Date()),
+    },
+    invoice: {
+      reference: "",
+      message: "",
+    },
+    fullWidthInvoice: true,
+    useCustomerAlternativeAddress: false,
+    customer: {
+      customerNumber: "",
+      vatNumber: "",
+      alternativeAddress: createAddress(),
+      debtorAddress: createAddress(),
+    },
+    defaultPositionType: POSITION_TYPE_QUANTITY,
+    defaultItemPrice: 0,
+    agileRiskFactor: 0.7,
+    agileHoursPerStoryPoint: 4,
+    positions: [
+      {
+        id: 0,
+        name: "Entwicklung",
+        enabled: true,
+        quantity: 0,
+        agilePointsMin: 8,
+        agilePointsMax: 13,
+        itemPrice: 80,
+        type: POSITION_TYPE_AGILE,
+      },
+      {
+        id: 1,
+        name: "Kaffee Trinken",
+        enabled: true,
+        quantity: 2,
+        itemPrice: 160,
+        type: POSITION_TYPE_QUANTITY,
+      },
+      {
+        id: 2,
+        name: "Pizza Essen",
+        enabled: true,
+        quantity: 1,
+        itemPrice: 280,
+        type: POSITION_TYPE_QUANTITY,
+      },
+    ] as Position[],
+  });
+
+export type Store = ReturnType<typeof createStore>;
+export const StoreContext = createContext<Store>();
+
+export const localStoreSchema = z.object({
+  showWelcome: z.boolean(),
+  version: z.number(),
+  vatNumber: z.string(),
+  vatRate: z.number(),
+  paymentTerms: z.string().optional(),
+  iban: z.string(),
+  creditor: addressSchema,
+  customAddress: addressSchema,
+  contact: z.object({
+    name: z.string(),
+    phone: z.string(),
+    email: z.string(),
+  }),
+  showLufraiWatermark: z.boolean(),
+  // TODO: Signature Image
+  logo: z
+    .object({
+      type: z.string(),
+      url: z.string(),
+      width: z.number(),
+      height: z.number(),
+    })
+    .optional(),
+  useCustomAddress: z.boolean(),
+});
+export type LocalStoreObject = Infer<typeof localStoreSchema>;
+
+export const createLocalStore = () =>
+  createLocalStore_<LocalStoreObject>(
+    {
+      version: 1,
+      showWelcome: true,
+      vatNumber: "",
+      vatRate: 0.0,
+      paymentTerms: undefined,
+      creditor: createAddress(),
+      customAddress: createAddress(),
+      contact: {
+        name: "",
+        phone: "",
+        email: "",
+      },
+      logo: undefined,
+      showLufraiWatermark: false,
+      useCustomAddress: false,
+      iban: "",
+    },
+    { prefix: "invoice-app" }
+  );
+
+export type LocalStore = ReturnType<typeof createLocalStore>;
+export const LocalStoreContext = createContext<LocalStore>();