diff --git a/handlers/income.go b/handlers/income.go
index b5bad04..c40151b 100644
--- a/handlers/income.go
+++ b/handlers/income.go
@@ -1,15 +1,21 @@
 package handlers
 
 import (
-	"fmt"
-	"strconv"
-
 	"git.qowevisa.me/Qowevisa/fin-check-api/db"
 	"git.qowevisa.me/Qowevisa/fin-check-api/types"
-	"git.qowevisa.me/Qowevisa/fin-check-api/utils"
 	"github.com/gin-gonic/gin"
 )
 
+var incomeTransform func(inp *db.Income) types.DbIncome = func(inp *db.Income) types.DbIncome {
+	return types.DbIncome{
+		ID:      inp.ID,
+		CardID:  inp.CardID,
+		Comment: inp.Comment,
+		Value:   inp.Value,
+		Date:    inp.Date,
+	}
+}
+
 // @Summary Get income by id
 // @Description Get income by id
 // @Tags income
@@ -24,53 +30,7 @@ import (
 // @Security ApiKeyAuth
 // @Router /income/:id [get]
 func IncomeGetId(c *gin.Context) {
-	userIDAny, exists := c.Get("UserID")
-	if !exists {
-		c.JSON(500, types.ErrorResponse{Message: "Internal error 001"})
-		return
-	}
-
-	var userID uint
-	if userIDVal, ok := userIDAny.(uint); !ok {
-		c.JSON(500, types.ErrorResponse{Message: "Internal error 002"})
-		return
-	} else {
-		userID = userIDVal
-	}
-
-	idStr := c.Param("id")
-	var id uint
-	if idVal, err := strconv.ParseUint(idStr, 10, 32); err != nil {
-		c.JSON(400, types.ErrorResponse{Message: "Invalid request"})
-		return
-	} else {
-		id = uint(idVal)
-	}
-
-	var dbIncome db.Income
-	dbc := db.Connect()
-	if err := dbc.Find(&dbIncome, id).Error; err != nil {
-		c.JSON(500, types.ErrorResponse{Message: err.Error()})
-		return
-	}
-	if dbIncome.ID == 0 {
-		c.JSON(500, types.ErrorResponse{Message: "DAFUQ003"})
-		return
-	}
-	if dbIncome.UserID != userID {
-		c.JSON(401, types.ErrorResponse{Message: "This income.id is not yours, you sneaky."})
-		return
-	}
-
-	ret := types.DbIncome{
-		ID:      dbIncome.ID,
-		CardID:  dbIncome.CardID,
-		Comment: dbIncome.Comment,
-		Value:   dbIncome.Value,
-		Date:    dbIncome.Date,
-		UserID:  dbIncome.UserID,
-	}
-	c.JSON(200, ret)
+	GetHandler(incomeTransform)(c)
 }
 
 // @Summary Add income
@@ -87,52 +47,15 @@ func IncomeGetId(c *gin.Context) {
 // @Security ApiKeyAuth
 // @Router /income/add [post]
 func IncomeAdd(c *gin.Context) {
-	userIDAny, exists := c.Get("UserID")
-	if !exists {
-		c.JSON(500, types.ErrorResponse{Message: "Internal error 001"})
-		return
-	}
-
-	var userID uint
-	if userIDVal, ok := userIDAny.(uint); !ok {
-		c.JSON(500, types.ErrorResponse{Message: "Internal error 002"})
-		return
-	} else {
-		userID = userIDVal
-	}
-
-	var income types.DbIncome
-	if err := c.ShouldBindJSON(&income); err != nil {
-		c.JSON(400, types.ErrorResponse{Message: "Invalid request"})
-		return
-	}
-	if income.UserID != 0 && userID != income.UserID {
-		c.JSON(403, types.ErrorResponse{Message: "UserID in body is different than yours!"})
-	}
-	if income.UserID == 0 {
-		income.UserID = userID
-	}
-
-	dbIncome := &db.Income{
-		CardID:  income.CardID,
-		Comment: income.Comment,
-		Value:   income.Value,
-		Date:    income.Date,
-		UserID:  income.UserID,
-	}
-	dbc := db.Connect()
-	if err := dbc.Create(&dbIncome).Error; err != nil {
-		c.JSON(500, types.ErrorResponse{Message: err.Error()})
-		return
-	}
-	if dbIncome.ID == 0 {
-		c.JSON(500, types.ErrorResponse{Message: "DAFUQ004"})
-		return
-	}
-	msg := types.Message{
-		Info: fmt.Sprintf("Income with id %d was successfully created!", dbIncome.ID),
-	}
-	c.JSON(200, msg)
+	CreateHandler(
+		&db.Income{},
+		func(src types.DbIncome, dst *db.Income) {
+			dst.CardID = src.CardID
+			dst.Value = src.Value
+			dst.Comment = src.Comment
+			dst.Date = src.Date
+		},
+	)
 }
 
 // @Summary Edit income by id
@@ -150,65 +73,15 @@ func IncomeAdd(c *gin.Context) {
 // @Security ApiKeyAuth
 // @Router /income/edit/:id [put]
 func IncomePutId(c *gin.Context) {
-	userIDAny, exists := c.Get("UserID")
-	if !exists {
-		c.JSON(500, types.ErrorResponse{Message: "Internal error 001"})
-		return
-	}
-
-	var userID uint
-	if userIDVal, ok := userIDAny.(uint); !ok {
-		c.JSON(500, types.ErrorResponse{Message: "Internal error 002"})
-		return
-	} else {
-		userID = userIDVal
-	}
-
-	idStr := c.Param("id")
-	var id uint
-	if idVal, err := strconv.ParseUint(idStr, 10, 32); err != nil {
-		c.JSON(400, types.ErrorResponse{Message: "Invalid request"})
-		return
-	} else {
-		id = uint(idVal)
-	}
-
-	var dbIncome db.Income
-	dbc := db.Connect()
-	if err := dbc.Find(&dbIncome, id).Error; err != nil {
-		c.JSON(500, types.ErrorResponse{Message: err.Error()})
-		return
-	}
-	if dbIncome.ID == 0 {
-		c.JSON(500, types.ErrorResponse{Message: "DAFUQ003"})
-		return
-	}
-	if dbIncome.UserID != userID {
-		c.JSON(401, types.ErrorResponse{Message: "This income.id is not yours, you sneaky."})
-		return
-	}
-	var income types.DbIncome
-	if err := c.ShouldBindJSON(&income); err != nil {
-		c.JSON(400, types.ErrorResponse{Message: "Invalid request"})
-		return
-	}
-
-	utils.MergeNonZeroFields(income, dbIncome)
-
-	if err := dbc.Save(dbIncome).Error; err != nil {
-		c.JSON(500, types.ErrorResponse{Message: err.Error()})
-		return
-	}
-
-	ret := types.DbIncome{
-		ID:      dbIncome.ID,
-		CardID:  dbIncome.CardID,
-		Comment: dbIncome.Comment,
-		Value:   dbIncome.Value,
-		Date:    dbIncome.Date,
-		UserID:  dbIncome.UserID,
-	}
-	c.JSON(200, ret)
+	UpdateHandler(
+		func(src types.DbIncome, dst *db.Income) {
+			dst.CardID = src.CardID
+			dst.Value = src.Value
+			dst.Comment = src.Comment
+			dst.Date = src.Date
+		},
+		incomeTransform,
+	)(c)
 }
 
 // @Summary Delete income by id
@@ -225,55 +98,5 @@ func IncomePutId(c *gin.Context) {
 // @Security ApiKeyAuth
 // @Router /income/delete/:id [delete]
 func IncomeDeleteId(c *gin.Context) {
-	userIDAny, exists := c.Get("UserID")
-	if !exists {
-		c.JSON(500, types.ErrorResponse{Message: "Internal error 001"})
-		return
-	}
-
-	var userID uint
-	if userIDVal, ok := userIDAny.(uint); !ok {
-		c.JSON(500, types.ErrorResponse{Message: "Internal error 002"})
-		return
-	} else {
-		userID = userIDVal
-	}
-
-	idStr := c.Param("id")
-	var id uint
-	if idVal, err := strconv.ParseUint(idStr, 10, 32); err != nil {
-		c.JSON(400, types.ErrorResponse{Message: "Invalid request"})
-		return
-	} else {
-		id = uint(idVal)
-	}
-
-	var dbIncome db.Income
-	dbc := db.Connect()
-	if err := dbc.Find(&dbIncome, id).Error; err != nil {
-		c.JSON(500, types.ErrorResponse{Message: err.Error()})
-		return
-	}
-	if dbIncome.ID == 0 {
-		c.JSON(500, types.ErrorResponse{Message: "DAFUQ003"})
-		return
-	}
-	if dbIncome.UserID != userID {
-		c.JSON(401, types.ErrorResponse{Message: "This income.id is not yours, you sneaky."})
-		return
-	}
-	if err := dbc.Delete(dbIncome).Error; err != nil {
-		c.JSON(500, types.ErrorResponse{Message: err.Error()})
-		return
-	}
-
-	ret := types.DbIncome{
-		ID:      dbIncome.ID,
-		CardID:  dbIncome.CardID,
-		Comment: dbIncome.Comment,
-		Value:   dbIncome.Value,
-		Date:    dbIncome.Date,
-		UserID:  dbIncome.UserID,
-	}
-	c.JSON(200, ret)
+	DeleteHandler[*db.Income]()(c)
 }