diff --git a/internal/bill/handler.go b/internal/bill/handler.go
index c5b3d27..75f40d0 100644
--- a/internal/bill/handler.go
+++ b/internal/bill/handler.go
@@ -14,10 +14,37 @@ func NewBillHandler(billRoute fiber.Router, bs BillService) {
 		billService: bs,
 	}
 
+	billRoute.Get("/id/:billID", handler.getBillById)
 	billRoute.Get("/:year?/:month?/:day?", handler.checkGetBillsParamsMiddleware, handler.getBills)
-	billRoute.Post("/", handler.createBill)
-	billRoute.Put("/", handler.updateBill)
-	billRoute.Delete("/", handler.deleteBill)
+	billRoute.Post("", handler.createBill)
+	billRoute.Put("/:billID", handler.checkIfBillExistsMiddleware, handler.updateBill)
+	billRoute.Delete("/:billID", handler.checkIfBillExistsMiddleware, handler.deleteBill)
+}
+
+func (h *BillHandler) getBillById(c *fiber.Ctx) error {
+	customContext, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	targetBillId, err := c.ParamsInt("billID")
+	if err != nil {
+		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{
+			"status":  "fail",
+			"message": "Invalid bill ID",
+		})
+	}
+
+	bill, err := h.billService.GetBillByID(customContext, targetBillId)
+	if err != nil {
+		return c.Status(fiber.StatusInternalServerError).JSON(&fiber.Map{
+			"status":  "fail",
+			"message": err.Error(),
+		})
+	}
+
+	return c.Status(fiber.StatusOK).JSON(&fiber.Map{
+		"status": "success",
+		"data":   bill,
+	})
 }
 
 func (h *BillHandler) getBills(c *fiber.Ctx) error {
@@ -33,6 +60,7 @@ func (h *BillHandler) getBills(c *fiber.Ctx) error {
 			"message": err.Error(),
 		})
 	}
+
 	return c.Status(fiber.StatusOK).JSON(&fiber.Map{
 		"status": "success",
 		"data":   bills,
@@ -69,31 +97,48 @@ func (h *BillHandler) createBill(c *fiber.Ctx) error {
 func (h *BillHandler) updateBill(c *fiber.Ctx) error {
 	customContext, cancel := context.WithCancel(context.Background())
 	defer cancel()
-	// TODO(): update data
-	err := h.billService.UpdateBill(customContext, &Bill{})
+
+	targetBillId := c.Locals("billID").(int)
+	bill := &Bill{}
+
+	if err := c.BodyParser(bill); err != nil {
+		return c.Status(fiber.StatusBadRequest).JSON(&fiber.Map{
+			"status":  "fail",
+			"message": err.Error(),
+		})
+	}
+	bill.ID = uint(targetBillId)
+
+	err := h.billService.UpdateBill(customContext, bill)
 	if err != nil {
 		return c.Status(fiber.StatusInternalServerError).JSON(&fiber.Map{
 			"status":  "fail",
 			"message": err.Error(),
 		})
 	}
+
 	return c.Status(fiber.StatusOK).JSON(&fiber.Map{
-		"status": "success",
+		"status":  "success",
+		"message": "Bill has been updated successfully!",
 	})
 }
 
 func (h *BillHandler) deleteBill(c *fiber.Ctx) error {
 	customContext, cancel := context.WithCancel(context.Background())
 	defer cancel()
-	// TODO(): delete data id
-	err := h.billService.DeleteBill(customContext, 0)
+
+	targetBillId := c.Locals("billID").(int)
+
+	err := h.billService.DeleteBill(customContext, targetBillId)
 	if err != nil {
 		return c.Status(fiber.StatusInternalServerError).JSON(&fiber.Map{
 			"status":  "fail",
 			"message": err.Error(),
 		})
 	}
+
 	return c.Status(fiber.StatusOK).JSON(&fiber.Map{
-		"status": "success",
+		"status":  "success",
+		"message": "Bill has been deleted successfully!",
 	})
 }
diff --git a/internal/bill/middleware.go b/internal/bill/middleware.go
index 7432bd6..f06ec9f 100644
--- a/internal/bill/middleware.go
+++ b/internal/bill/middleware.go
@@ -1,6 +1,7 @@
 package bill
 
 import (
+	"context"
 	"github.com/gofiber/fiber/v2"
 	"gopkg.in/go-playground/validator.v9"
 )
@@ -24,3 +25,33 @@ func (h *BillHandler) checkGetBillsParamsMiddleware(c *fiber.Ctx) error {
 	c.Locals("bDate", date)
 	return c.Next()
 }
+
+func (h *BillHandler) checkIfBillExistsMiddleware(c *fiber.Ctx) error {
+	customContext, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	targetLabelID, err := c.ParamsInt("billID")
+	if err != nil {
+		return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{
+			"status":  "fail",
+			"message": "Please specify a valid bill ID!",
+		})
+	}
+
+	searchLabel, err := h.billService.GetBillByID(customContext, targetLabelID)
+	if err != nil {
+		return c.Status(fiber.StatusNotFound).JSON(fiber.Map{
+			"status":  "fail",
+			"message": err.Error(),
+		})
+	}
+	if searchLabel == nil {
+		return c.Status(fiber.StatusNotFound).JSON(fiber.Map{
+			"status":  "fail",
+			"message": "These is no bill with this ID!",
+		})
+	}
+
+	c.Locals("billID", targetLabelID)
+	return c.Next()
+}