diff --git a/src/database/migrations/1789046400000-AddBusinessSlotStepMinutes.ts b/src/database/migrations/1789046400000-AddBusinessSlotStepMinutes.ts
new file mode 100644
index 0000000..61b0bef
--- /dev/null
+++ b/src/database/migrations/1789046400000-AddBusinessSlotStepMinutes.ts
@@ -0,0 +1,20 @@
+import { MigrationInterface, QueryRunner } from 'typeorm';
+
+export class AddBusinessSlotStepMinutes1789046400000
+  implements MigrationInterface
+{
+  name = 'AddBusinessSlotStepMinutes1789046400000';
+
+  public async up(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`
+      ALTER TABLE "businesses"
+      ADD COLUMN IF NOT EXISTS "slotStepMinutes" integer NOT NULL DEFAULT 30
+    `);
+  }
+
+  public async down(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`
+      ALTER TABLE "businesses" DROP COLUMN IF EXISTS "slotStepMinutes"
+    `);
+  }
+}
diff --git a/src/database/migrations/1789046500000-SetBusinessSlotStepDefault30.ts b/src/database/migrations/1789046500000-SetBusinessSlotStepDefault30.ts
new file mode 100644
index 0000000..4826e0a
--- /dev/null
+++ b/src/database/migrations/1789046500000-SetBusinessSlotStepDefault30.ts
@@ -0,0 +1,21 @@
+import { MigrationInterface, QueryRunner } from 'typeorm';
+
+export class SetBusinessSlotStepDefault301789046500000
+  implements MigrationInterface
+{
+  name = 'SetBusinessSlotStepDefault301789046500000';
+
+  public async up(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`
+      ALTER TABLE "businesses"
+      ALTER COLUMN "slotStepMinutes" SET DEFAULT 30
+    `);
+  }
+
+  public async down(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`
+      ALTER TABLE "businesses"
+      ALTER COLUMN "slotStepMinutes" SET DEFAULT 15
+    `);
+  }
+}
diff --git a/src/entities/business.entity.ts b/src/entities/business.entity.ts
index 1d12f39..a3cd8cd 100644
--- a/src/entities/business.entity.ts
+++ b/src/entities/business.entity.ts
@@ -53,6 +53,10 @@ export class BusinessEntity {
   @Column({ type: 'int', default: 1 })
   concurrentCapacity!: number;
 
+  /** Minutes between bookable slot start times (e.g. 30 → 10:00, 10:30, 11:00) */
+  @Column({ type: 'int', default: 30 })
+  slotStepMinutes!: number;
+
   @ManyToOne(() => BusinessCategoryEntity, (category) => category.businesses, {
     onDelete: 'RESTRICT',
   })
diff --git a/src/modules/bookings/bookings.service.ts b/src/modules/bookings/bookings.service.ts
index d228b55..dcb9b3c 100644
--- a/src/modules/bookings/bookings.service.ts
+++ b/src/modules/bookings/bookings.service.ts
@@ -388,13 +388,14 @@ export class BookingsService {
 
     const windows = await this.loadAvailabilityWindows(businessId);
     const busy = await this.loadBusyIntervals(businessId, dateYmd);
-    const concurrentCapacity = await this.getConcurrentCapacity(businessId);
+    const { concurrentCapacity, slotStepMinutes } =
+      await this.getBusinessBookingSettings(businessId);
 
     const slots = generateAvailableSlotStarts({
       dateYmd,
       durationMinutes: totalDurationMinutes,
       leadMinutes: this.minLeadMinutes,
-      slotStepMinutes: 15,
+      slotStepMinutes,
       windows,
       busy,
       concurrentCapacity,
@@ -403,13 +404,18 @@ export class BookingsService {
     return { date: dateYmd, slots, totalDurationMinutes };
   }
 
-  private async getConcurrentCapacity(businessId: string): Promise<number> {
+  private async getBusinessBookingSettings(businessId: string): Promise<{
+    concurrentCapacity: number;
+    slotStepMinutes: number;
+  }> {
     const business = await this.businessRepo.findOne({
       where: { id: businessId },
-      select: ['id', 'concurrentCapacity'],
+      select: ['id', 'concurrentCapacity', 'slotStepMinutes'],
     });
-    const value = business?.concurrentCapacity ?? 1;
-    return Math.max(1, value);
+    return {
+      concurrentCapacity: Math.max(1, business?.concurrentCapacity ?? 1),
+      slotStepMinutes: Math.max(5, business?.slotStepMinutes ?? 30),
+    };
   }
 
   private async loadAvailabilityWindows(
@@ -658,12 +664,13 @@ export class BookingsService {
       );
     }
 
-    const concurrentCapacity = await this.getConcurrentCapacity(businessId);
+    const { concurrentCapacity, slotStepMinutes } =
+      await this.getBusinessBookingSettings(businessId);
     const slots = generateAvailableSlotStarts({
       dateYmd,
       durationMinutes,
       leadMinutes: this.minLeadMinutes,
-      slotStepMinutes: 15,
+      slotStepMinutes,
       windows,
       busy: await this.loadBusyIntervals(businessId, dateYmd, {
         excludeBookingId,
diff --git a/src/modules/businesses/dto/update-business.dto.ts b/src/modules/businesses/dto/update-business.dto.ts
index 6c3f59f..6db53fd 100644
--- a/src/modules/businesses/dto/update-business.dto.ts
+++ b/src/modules/businesses/dto/update-business.dto.ts
@@ -91,4 +91,16 @@ export class UpdateBusinessDto {
   @Min(1)
   @Max(20)
   concurrentCapacity?: number;
+
+  @ApiPropertyOptional({
+    example: 30,
+    description: 'Minutes between available booking slot start times',
+    minimum: 5,
+    maximum: 120,
+  })
+  @IsOptional()
+  @IsInt()
+  @Min(5)
+  @Max(120)
+  slotStepMinutes?: number;
 }