diff --git a/scripts/migrations/003-transactions.ts b/scripts/migrations/003-transactions.ts
new file mode 100644
index 0000000..58cd95f
--- /dev/null
+++ b/scripts/migrations/003-transactions.ts
@@ -0,0 +1,12 @@
+import { PayeeModel } from "@/models/payee";
+import { TransactionModel } from "@/models/transaction";
+import type { Migration } from "./types";
+
+export const migration: Migration = {
+  name: "003-transactions",
+  description: "transactions ve payees index'leri",
+  async up() {
+    await TransactionModel.createIndexes();
+    await PayeeModel.createIndexes();
+  },
+};
diff --git a/scripts/migrations/index.ts b/scripts/migrations/index.ts
index b92e442..78b0ab2 100644
--- a/scripts/migrations/index.ts
+++ b/scripts/migrations/index.ts
@@ -2,10 +2,11 @@ import { getDb } from "@/lib/db/mongo";
 import { connectMongoose } from "@/lib/db/mongoose";
 import { migration as m001 } from "./001-initial-indexes";
 import { migration as m002 } from "./002-accounts-categories";
+import { migration as m003 } from "./003-transactions";
 import type { Migration } from "./types";
 
 /** Sıralı migration listesi. Yeni migration: dosyayı ekle ve buraya sırayla ekle. */
-export const MIGRATIONS: Migration[] = [m001, m002];
+export const MIGRATIONS: Migration[] = [m001, m002, m003];
 
 const COLLECTION = "migrations";
 
diff --git a/scripts/seed.ts b/scripts/seed.ts
index b45a035..5e05fcf 100644
--- a/scripts/seed.ts
+++ b/scripts/seed.ts
@@ -11,9 +11,9 @@ import { closeSeedConnections, runSeed } from "./seed/run";
 
 async function main() {
   const summary = await runSeed({ reset: process.argv.includes("--reset") });
-  const { users, households, memberships, categories, accounts } = summary.created;
+  const { users, households, memberships, categories, accounts, transactions } = summary.created;
   console.log(
-    `\nOluşturulan: ${users} kullanıcı, ${households} hane, ${memberships} üyelik, ${categories} kategori, ${accounts} hesap.`,
+    `\nOluşturulan: ${users} kullanıcı, ${households} hane, ${memberships} üyelik, ${categories} kategori, ${accounts} hesap, ${transactions} işlem.`,
   );
 
   // Hesap tablosu yalnızca geliştirme ortamında gösterilir.
diff --git a/scripts/seed/run.int.test.ts b/scripts/seed/run.int.test.ts
index bc0032c..b720dc8 100644
--- a/scripts/seed/run.int.test.ts
+++ b/scripts/seed/run.int.test.ts
@@ -31,6 +31,7 @@ describe("seed", () => {
     });
     expect(summary.created.categories).toBeGreaterThan(40);
     expect(summary.created.accounts).toBe(7);
+    expect(summary.created.transactions).toBeGreaterThan(150);
     expect(await getDb().collection("user").countDocuments()).toBe(SEED_USERS.length + 1);
     expect(await HouseholdMemberModel.countDocuments()).toBe(memberCount);
   });
@@ -43,6 +44,7 @@ describe("seed", () => {
       memberships: 0,
       categories: 0,
       accounts: 0,
+      transactions: 0,
     });
     expect(await getDb().collection("user").countDocuments()).toBe(SEED_USERS.length + 1);
     expect(await HouseholdModel.countDocuments()).toBe(SEED_HOUSEHOLDS.length);
diff --git a/scripts/seed/run.ts b/scripts/seed/run.ts
index c8d1d00..bc84c64 100644
--- a/scripts/seed/run.ts
+++ b/scripts/seed/run.ts
@@ -9,6 +9,7 @@ import { HouseholdModel } from "@/models/household";
 import { HouseholdMemberModel } from "@/models/household-member";
 import { storedEmail } from "@/shared/account-email";
 import { runMigrations } from "../migrations";
+import { seedTransactions } from "./transactions";
 import {
   ADMIN_USERNAME,
   SEED_ACCOUNTS,
@@ -40,6 +41,7 @@ export type SeedSummary = {
     memberships: number;
     categories: number;
     accounts: number;
+    transactions: number;
   };
   accounts: SeedAccountRow[];
 };
@@ -93,7 +95,14 @@ export async function runSeed({
   const db = getDb();
   await connectMongoose();
   const summary: SeedSummary = {
-    created: { users: 0, households: 0, memberships: 0, categories: 0, accounts: 0 },
+    created: {
+      users: 0,
+      households: 0,
+      memberships: 0,
+      categories: 0,
+      accounts: 0,
+      transactions: 0,
+    },
     accounts: [],
   };
 
@@ -246,7 +255,12 @@ export async function runSeed({
   if (summary.created.categories) log(`✓ Varsayılan kategoriler: ${summary.created.categories}`);
   if (summary.created.accounts) log(`✓ Örnek hesaplar: ${summary.created.accounts}`);
 
-  // 6) Geliştirme hesapları tablosu
+  // 6) Son 6 ayın örnek işlemleri (faker.seed(42), idempotent)
+  const userIdMap = new Map([...ids.entries()]);
+  summary.created.transactions = await seedTransactions(householdIds, userIdMap);
+  if (summary.created.transactions) log(`✓ Örnek işlemler: ${summary.created.transactions}`);
+
+  // 7) Geliştirme hesapları tablosu
   const all = [
     { username: ADMIN_USERNAME, name: "Yönetici", email: adminEmail, role: "admin" as const },
     ...SEED_USERS,
diff --git a/scripts/seed/transactions.ts b/scripts/seed/transactions.ts
new file mode 100644
index 0000000..4b22ee7
--- /dev/null
+++ b/scripts/seed/transactions.ts
@@ -0,0 +1,496 @@
+import { faker } from "@faker-js/faker";
+import { Types } from "mongoose";
+import { AccountModel } from "@/models/account";
+import { CategoryModel } from "@/models/category";
+import { PayeeModel } from "@/models/payee";
+import { TransactionModel } from "@/models/transaction";
+import { istanbulDayStart, todayIstanbul } from "@/shared/dates";
+import { allocate } from "@/shared/money";
+import { foldTr } from "@/shared/search";
+import type { TransactionType } from "@/shared/transactions";
+
+/**
+ * Son 6 ayın gerçekçi işlemleri (faker.seed(42) ile tekrarlanabilir).
+ * Her işlemin sabit `seedRef`'i vardır: tekrar çalıştırmada kopya oluşmaz.
+ */
+
+type Ctx = {
+  householdId: Types.ObjectId;
+  account: (name: string) => Types.ObjectId;
+  category: (key: string) => Types.ObjectId;
+  user: (username: string) => Types.ObjectId;
+};
+
+type SeedTx = {
+  ref: string;
+  type: TransactionType;
+  ymd: string;
+  amountMinor: number;
+  account: string;
+  toAccount?: string;
+  category?: string;
+  splits?: { category: string; weight: number; note?: string }[];
+  payee?: string;
+  description?: string;
+  tags?: string[];
+  by: string;
+};
+
+const tl = (min: number, max: number) => faker.number.int({ min: min * 100, max: max * 100 });
+const pick = <T>(xs: readonly T[]) => faker.helpers.arrayElement(xs);
+
+/** Ayın gün sayısına göre güvenli gün (31 → ayın son günü). */
+function ymdOf(year: number, month: number, day: number) {
+  const last = new Date(Date.UTC(year, month, 0)).getUTCDate();
+  return `${year}-${String(month).padStart(2, "0")}-${String(Math.min(day, last)).padStart(2, "0")}`;
+}
+
+function months(count: number): { y: number; m: number; key: string }[] {
+  const [ty, tm] = todayIstanbul().split("-").map(Number) as [number, number];
+  return Array.from({ length: count }, (_, i) => {
+    const d = new Date(Date.UTC(ty, tm - 1 - (count - 1 - i), 1));
+    const y = d.getUTCFullYear();
+    const m = d.getUTCMonth() + 1;
+    return { y, m, key: `${y}-${String(m).padStart(2, "0")}` };
+  });
+}
+
+function cakirAiles(): SeedTx[] {
+  const out: SeedTx[] = [];
+  const marketPayees = ["Migros", "BİM", "A101", "Şok", "CarrefourSA"] as const;
+  for (const { y, m, key } of months(6)) {
+    const winter = [11, 12, 1, 2, 3].includes(m);
+    const d = (day: number) => ymdOf(y, m, day);
+    const add = (x: Omit<SeedTx, "ref">, n = 0) =>
+      out.push({ ...x, ref: `cakir:${key}:${x.payee ?? x.category ?? x.type}:${n}` });
+
+    add({
+      type: "income",
+      ymd: d(15),
+      amountMinor: 52_000_00,
+      account: "Ziraat Maaş",
+      category: "maas",
+      payee: "Anadolu Yazılım A.Ş.",
+      by: "admin",
+    });
+    add({
+      type: "income",
+      ymd: d(1),
+      amountMinor: 4_500_00,
+      account: "Ayşe — Pluxee",
+      category: "yemek-karti",
+      payee: "Pluxee",
+      by: "ayse",
+    });
+    add({
+      type: "expense",
+      ymd: d(3),
+      amountMinor: 17_500_00,
+      account: "Ziraat Maaş",
+      category: "kira",
+      payee: "Ev sahibi",
+      description: "Kira",
+      by: "admin",
+    });
+    add({
+      type: "expense",
+      ymd: d(5),
+      amountMinor: 1_250_00,
+      account: "Ziraat Maaş",
+      category: "aidat",
+      payee: "Site yönetimi",
+      by: "admin",
+    });
+    add({
+      type: "expense",
+      ymd: d(10),
+      amountMinor: tl(750, 1_600),
+      account: "Ziraat Maaş",
+      category: "faturalar.elektrik",
+      payee: "Enerjisa",
+      by: "ayse",
+    });
+    add({
+      type: "expense",
+      ymd: d(12),
+      amountMinor: tl(300, 620),
+      account: "Ziraat Maaş",
+      category: "faturalar.su",
+      payee: "İSKİ",
+      by: "ayse",
+    });
+    add({
+      type: "expense",
+      ymd: d(14),
+      amountMinor: winter ? tl(1_800, 3_400) : tl(350, 700),
+      account: "Ziraat Maaş",
+      category: "faturalar.dogalgaz",
+      payee: "İGDAŞ",
+      by: "ayse",
+    });
+    add({
+      type: "expense",
+      ymd: d(20),
+      amountMinor: 499_90,
+      account: "Garanti Bonus",
+      category: "faturalar.internet",
+      payee: "Türk Telekom",
+      by: "admin",
+    });
+    add({
+      type: "expense",
+      ymd: d(22),
+      amountMinor: 714_00,
+      account: "Garanti Bonus",
+      category: "faturalar.telefon",
+      payee: "Turkcell",
+      description: "2 hat",
+      by: "admin",
+    });
+    add({
+      type: "expense",
+      ymd: d(8),
+      amountMinor: 229_99,
+      account: "Garanti Bonus",
+      category: "abonelikler",
+      payee: "Netflix",
+      by: "admin",
+    });
+    add({
+      type: "expense",
+      ymd: d(9),
+      amountMinor: 99_99,
+      account: "Garanti Bonus",
+      category: "abonelikler",
+      payee: "Spotify",
+      by: "emre",
+    });
+
+    // Transferler: nakit çekme, kart ödemesi, birikim.
+    add({
+      type: "transfer",
+      ymd: d(2),
+      amountMinor: 2_000_00,
+      account: "Ziraat Maaş",
+      toAccount: "Cüzdan",
+      description: "ATM",
+      by: "admin",
+    });
+    add({
+      type: "transfer",
+      ymd: d(9),
+      amountMinor: tl(11_000, 15_000),
+      account: "Ziraat Maaş",
+      toAccount: "Garanti Bonus",
+      description: "Kart borcu ödemesi",
+      by: "admin",
+    });
+    add({
+      type: "transfer",
+      ymd: d(16),
+      amountMinor: 5_000_00,
+      account: "Ziraat Maaş",
+      toAccount: "Birikim (Vadeli)",
+      description: "Aylık birikim",
+      by: "ayse",
+    });
+
+    // Market: haftada 1–2; bir kısmı bölünmüş.
+    const marketCount = faker.number.int({ min: 6, max: 8 });
+    for (let i = 0; i < marketCount; i++) {
+      const payee = pick(marketPayees);
+      const amountMinor = tl(280, 2_600);
+      const split = amountMinor > 1_200_00 && faker.datatype.boolean({ probability: 0.5 });
+      add(
+        {
+          type: "expense",
+          ymd: d(faker.number.int({ min: 1, max: 28 })),
+          amountMinor,
+          account: pick(["Garanti Bonus", "Garanti Bonus", "Cüzdan"]),
+          ...(split
+            ? {
+                splits: [
+                  { category: "market.gida", weight: faker.number.int({ min: 55, max: 75 }) },
+                  {
+                    category: "market.temizlik",
+                    weight: faker.number.int({ min: 10, max: 25 }),
+                    note: "Deterjan",
+                  },
+                  {
+                    category: "market.kisisel-bakim",
+                    weight: faker.number.int({ min: 5, max: 15 }),
+                  },
+                ],
+              }
+            : { category: "market.gida" }),
+          payee,
+          tags: faker.datatype.boolean({ probability: 0.15 }) ? ["indirim"] : [],
+          by: pick(["ayse", "ayse", "admin", "emre"]),
+        },
+        i,
+      );
+    }
+    for (let i = 0; i < faker.number.int({ min: 2, max: 3 }); i++) {
+      add(
+        {
+          type: "expense",
+          ymd: d(faker.number.int({ min: 1, max: 28 })),
+          amountMinor: tl(1_200, 2_300),
+          account: "Garanti Bonus",
+          category: "ulasim.yakit",
+          payee: pick(["Shell", "Opet", "BP"]),
+          by: "admin",
+        },
+        i,
+      );
+    }
+    for (let i = 0; i < faker.number.int({ min: 4, max: 6 }); i++) {
+      add(
+        {
+          type: "expense",
+          ymd: d(faker.number.int({ min: 1, max: 28 })),
+          amountMinor: tl(110, 340),
+          account: "Ayşe — Pluxee",
+          category: "eglence.kafe",
+          payee: pick(["Starbucks", "Kahve Dünyası", "Simit Sarayı"]),
+          by: "ayse",
+        },
+        i,
+      );
+    }
+    for (let i = 0; i < faker.number.int({ min: 2, max: 4 }); i++) {
+      add(
+        {
+          type: "expense",
+          ymd: d(faker.number.int({ min: 1, max: 28 })),
+          amountMinor: tl(450, 1_600),
+          account: pick(["Garanti Bonus", "Ayşe — Pluxee"]),
+          category: "eglence.disarida-yemek",
+          payee: pick(["Köfteci Yusuf", "Nusr-Et", "Big Chefs", "Yemeksepeti"]),
+          by: pick(["ayse", "admin"]),
+        },
+        i,
+      );
+    }
+    for (let i = 0; i < 4; i++) {
+      add(
+        {
+          type: "expense",
+          ymd: d(faker.number.int({ min: 1, max: 28 })),
+          amountMinor: tl(60, 220),
+          account: "Cüzdan",
+          category: "ulasim.toplu-tasima",
+          payee: "İstanbulkart",
+          by: "emre",
+        },
+        i,
+      );
+    }
+    if (faker.datatype.boolean({ probability: 0.6 })) {
+      add({
+        type: "expense",
+        ymd: d(faker.number.int({ min: 1, max: 28 })),
+        amountMinor: tl(140, 650),
+        account: "Cüzdan",
+        category: "saglik.ilac",
+        payee: "Eczane",
+        by: "ayse",
+      });
+    }
+    if (faker.datatype.boolean({ probability: 0.5 })) {
+      add({
+        type: "expense",
+        ymd: d(faker.number.int({ min: 1, max: 28 })),
+        amountMinor: tl(600, 3_200),
+        account: "Garanti Bonus",
+        category: "giyim",
+        payee: pick(["LC Waikiki", "Trendyol", "Koton"]),
+        by: "ayse",
+      });
+    }
+  }
+  return out;
+}
+
+function annemler(): SeedTx[] {
+  const out: SeedTx[] = [];
+  for (const { y, m, key } of months(6)) {
+    const winter = [11, 12, 1, 2, 3].includes(m);
+    const d = (day: number) => ymdOf(y, m, day);
+    const add = (x: Omit<SeedTx, "ref">, n = 0) =>
+      out.push({ ...x, ref: `annemler:${key}:${x.payee ?? x.category ?? x.type}:${n}` });
+    add({
+      type: "income",
+      ymd: d(17),
+      amountMinor: 24_350_00,
+      account: "Vakıfbank Emekli",
+      category: "maas",
+      payee: "SGK",
+      description: "Emekli maaşı",
+      by: "fatma",
+    });
+    add({
+      type: "expense",
+      ymd: d(11),
+      amountMinor: tl(450, 900),
+      account: "Vakıfbank Emekli",
+      category: "faturalar.elektrik",
+      payee: "Enerjisa",
+      by: "mehmet",
+    });
+    add({
+      type: "expense",
+      ymd: d(13),
+      amountMinor: winter ? tl(1_400, 2_600) : tl(250, 500),
+      account: "Vakıfbank Emekli",
+      category: "faturalar.dogalgaz",
+      payee: "İGDAŞ",
+      by: "mehmet",
+    });
+    add({
+      type: "transfer",
+      ymd: d(18),
+      amountMinor: 4_000_00,
+      account: "Vakıfbank Emekli",
+      toAccount: "Nakit",
+      description: "ATM",
+      by: "fatma",
+    });
+    for (let i = 0; i < 5; i++) {
+      add(
+        {
+          type: "expense",
+          ymd: d(faker.number.int({ min: 1, max: 28 })),
+          amountMinor: tl(200, 1_100),
+          account: pick(["Nakit", "Vakıfbank Emekli"]),
+          category: "market.gida",
+          payee: pick(["BİM", "Şok", "Pazar"]),
+          by: pick(["fatma", "mehmet"]),
+        },
+        i,
+      );
+    }
+  }
+  return out;
+}
+
+export async function seedTransactions(
+  householdIds: Map<string, Types.ObjectId>,
+  userIds: Map<string, string>,
+): Promise<number> {
+  faker.seed(42);
+  let inserted = 0;
+  const plan: [string, SeedTx[]][] = [
+    ["Çakır Ailesi", cakirAiles()],
+    ["Annemler", annemler()],
+  ];
+  const today = todayIstanbul();
+
+  for (const [householdName, txs] of plan) {
+    const householdId = householdIds.get(householdName)!;
+    const [accounts, categories] = await Promise.all([
+      AccountModel.find({ householdId }).select({ name: 1 }).lean(),
+      CategoryModel.find({ householdId, defaultKey: { $ne: null } })
+        .select({ defaultKey: 1 })
+        .lean(),
+    ]);
+    const ctx: Ctx = {
+      householdId,
+      account: (name) => accounts.find((a) => a.name === name)!._id,
+      category: (key) => categories.find((c) => c.defaultKey === key)!._id,
+      user: (username) => new Types.ObjectId(userIds.get(username)!),
+    };
+    const payeeStats = new Map<
+      string,
+      {
+        name: string;
+        type: TransactionType;
+        account: Types.ObjectId;
+        category: Types.ObjectId | null;
+        count: number;
+        last: Date;
+      }
+    >();
+
+    for (const x of txs) {
+      if (x.ymd > today) continue; // Gelecek tarihli seed işlemi yok.
+      const date = istanbulDayStart(x.ymd)!;
+      const splits = x.splits
+        ? allocate(
+            x.amountMinor,
+            x.splits.map((s) => s.weight),
+          ).map((amountMinor, i) => ({
+            categoryId: ctx.category(x.splits![i]!.category),
+            amountMinor,
+            note: x.splits![i]!.note ?? "",
+          }))
+        : [];
+      const categoryId = x.category ? ctx.category(x.category) : null;
+      const accountId = ctx.account(x.account);
+      const by = ctx.user(x.by);
+      const doc = {
+        householdId,
+        type: x.type,
+        status: "posted",
+        date,
+        accountId,
+        toAccountId: x.toAccount ? ctx.account(x.toAccount) : null,
+        amountMinor: x.amountMinor,
+        categoryId: splits.length ? null : categoryId,
+        splits,
+        effectiveCategoryIds: splits.length
+          ? [...new Set(splits.map((s) => String(s.categoryId)))].map(
+              (id) => new Types.ObjectId(id),
+            )
+          : categoryId
+            ? [categoryId]
+            : [],
+        payeeName: x.payee ?? "",
+        description: x.description ?? "",
+        searchText: foldTr(
+          [x.payee ?? "", x.description ?? "", ...splits.map((s) => s.note)].join(" "),
+        ),
+        tags: x.tags ?? [],
+        seedRef: x.ref,
+        createdBy: by,
+        updatedBy: by,
+      };
+      const res = await TransactionModel.updateOne(
+        { householdId, seedRef: x.ref },
+        { $setOnInsert: doc },
+        { upsert: true },
+      );
+      if (res.upsertedCount) inserted++;
+      if (x.payee) {
+        const key = foldTr(x.payee);
+        const prev = payeeStats.get(key);
+        const latest = !prev || date >= prev.last;
+        payeeStats.set(key, {
+          name: x.payee,
+          type: latest ? x.type : prev!.type,
+          account: latest ? accountId : prev!.account,
+          category: latest ? (splits.length ? null : categoryId) : prev!.category,
+          count: (prev?.count ?? 0) + 1,
+          last: latest ? date : prev!.last,
+        });
+      }
+    }
+    for (const [nameKey, p] of payeeStats) {
+      await PayeeModel.updateOne(
+        { householdId, nameKey },
+        {
+          $setOnInsert: { householdId, nameKey, name: p.name },
+          $set: {
+            lastType: p.type,
+            lastAccountId: p.account,
+            lastCategoryId: p.category,
+            useCount: p.count,
+            lastUsedAt: p.last,
+          },
+        },
+        { upsert: true },
+      );
+    }
+  }
+  return inserted;
+}