diff --git a/postgres/accounts.sql.go b/postgres/accounts.sql.go
index c50bc8f..4d15658 100644
--- a/postgres/accounts.sql.go
+++ b/postgres/accounts.sql.go
@@ -6,6 +6,7 @@ package postgres
 import (
 	"context"
 
+	"git.javil.eu/jacob1123/budgeteer/postgres/numeric"
 	"github.com/google/uuid"
 )
 
@@ -97,7 +98,7 @@ type GetAccountsWithBalanceRow struct {
 	ID       uuid.UUID
 	Name     string
 	OnBudget bool
-	Balance  Numeric
+	Balance  numeric.Numeric
 }
 
 func (q *Queries) GetAccountsWithBalance(ctx context.Context, budgetID uuid.UUID) ([]GetAccountsWithBalanceRow, error) {
diff --git a/postgres/assignments.sql.go b/postgres/assignments.sql.go
index 0689a18..8602e7a 100644
--- a/postgres/assignments.sql.go
+++ b/postgres/assignments.sql.go
@@ -7,6 +7,7 @@ import (
 	"context"
 	"time"
 
+	"git.javil.eu/jacob1123/budgeteer/postgres/numeric"
 	"github.com/google/uuid"
 )
 
@@ -21,7 +22,7 @@ RETURNING id, category_id, date, memo, amount
 
 type CreateAssignmentParams struct {
 	Date       time.Time
-	Amount     Numeric
+	Amount     numeric.Numeric
 	CategoryID uuid.UUID
 }
 
@@ -65,7 +66,7 @@ type GetAllAssignmentsRow struct {
 	Date     time.Time
 	Category string
 	Group    string
-	Amount   Numeric
+	Amount   numeric.Numeric
 }
 
 func (q *Queries) GetAllAssignments(ctx context.Context, budgetID uuid.UUID) ([]GetAllAssignmentsRow, error) {
diff --git a/postgres/cumultative-balances.sql.go b/postgres/cumultative-balances.sql.go
index bad7a53..3b4b636 100644
--- a/postgres/cumultative-balances.sql.go
+++ b/postgres/cumultative-balances.sql.go
@@ -7,6 +7,7 @@ import (
 	"context"
 	"time"
 
+	"git.javil.eu/jacob1123/budgeteer/postgres/numeric"
 	"github.com/google/uuid"
 )
 
@@ -23,10 +24,10 @@ ORDER BY COALESCE(ass.date, tra.date), COALESCE(ass.category_id, tra.category_id
 type GetCumultativeBalancesRow struct {
 	Date            time.Time
 	CategoryID      uuid.UUID
-	Assignments     Numeric
-	AssignmentsCum  Numeric
-	Transactions    Numeric
-	TransactionsCum Numeric
+	Assignments     numeric.Numeric
+	AssignmentsCum  numeric.Numeric
+	Transactions    numeric.Numeric
+	TransactionsCum numeric.Numeric
 }
 
 func (q *Queries) GetCumultativeBalances(ctx context.Context, budgetID uuid.UUID) ([]GetCumultativeBalancesRow, error) {
diff --git a/postgres/models.go b/postgres/models.go
index 81ba49b..ad4bf6b 100644
--- a/postgres/models.go
+++ b/postgres/models.go
@@ -7,6 +7,7 @@ import (
 	"fmt"
 	"time"
 
+	"git.javil.eu/jacob1123/budgeteer/postgres/numeric"
 	"github.com/google/uuid"
 )
 
@@ -42,7 +43,7 @@ type Assignment struct {
 	CategoryID uuid.UUID
 	Date       time.Time
 	Memo       sql.NullString
-	Amount     Numeric
+	Amount     numeric.Numeric
 }
 
 type AssignmentsByMonth struct {
@@ -81,7 +82,7 @@ type Transaction struct {
 	ID         uuid.UUID
 	Date       time.Time
 	Memo       string
-	Amount     Numeric
+	Amount     numeric.Numeric
 	AccountID  uuid.UUID
 	CategoryID uuid.NullUUID
 	PayeeID    uuid.NullUUID
diff --git a/postgres/numeric.go b/postgres/numeric/numeric.go
similarity index 85%
rename from postgres/numeric.go
rename to postgres/numeric/numeric.go
index 9483e87..83dbd3b 100644
--- a/postgres/numeric.go
+++ b/postgres/numeric/numeric.go
@@ -1,8 +1,10 @@
-package postgres
+package numeric
 
 import (
 	"fmt"
 	"math/big"
+	"strings"
+	"unicode/utf8"
 
 	"github.com/jackc/pgtype"
 )
@@ -11,7 +13,7 @@ type Numeric struct {
 	pgtype.Numeric
 }
 
-func NewZeroNumeric() Numeric {
+func Zero() Numeric {
 	return Numeric{pgtype.Numeric{Exp: 0, Int: big.NewInt(0), Status: pgtype.Present, NaN: false}}
 }
 
@@ -165,3 +167,27 @@ func (n Numeric) MarshalJSON() ([]byte, error) {
 	bytesWithSeparator = append(bytesWithSeparator, bytes[split:]...)
 	return bytesWithSeparator, nil
 }
+
+func Parse(text string) (Numeric, error) {
+	// Remove trailing currency
+	text = trimLastChar(text)
+
+	// Unify decimal separator
+	text = strings.Replace(text, ",", ".", 1)
+
+	num := Numeric{}
+	err := num.Set(text)
+	if err != nil {
+		return num, fmt.Errorf("parse numeric %s: %w", text, err)
+	}
+
+	return num, nil
+}
+
+func trimLastChar(s string) string {
+	r, size := utf8.DecodeLastRuneInString(s)
+	if r == utf8.RuneError && (size == 0 || size == 1) {
+		size = 0
+	}
+	return s[:len(s)-size]
+}
diff --git a/postgres/transactions.sql.go b/postgres/transactions.sql.go
index f5c813d..0b57967 100644
--- a/postgres/transactions.sql.go
+++ b/postgres/transactions.sql.go
@@ -7,6 +7,7 @@ import (
 	"context"
 	"time"
 
+	"git.javil.eu/jacob1123/budgeteer/postgres/numeric"
 	"github.com/google/uuid"
 )
 
@@ -20,7 +21,7 @@ RETURNING id, date, memo, amount, account_id, category_id, payee_id, group_id, s
 type CreateTransactionParams struct {
 	Date       time.Time
 	Memo       string
-	Amount     Numeric
+	Amount     numeric.Numeric
 	AccountID  uuid.UUID
 	PayeeID    uuid.NullUUID
 	CategoryID uuid.NullUUID
@@ -95,7 +96,7 @@ type GetAllTransactionsForBudgetRow struct {
 	ID            uuid.UUID
 	Date          time.Time
 	Memo          string
-	Amount        Numeric
+	Amount        numeric.Numeric
 	GroupID       uuid.NullUUID
 	Status        TransactionStatus
 	Account       string
@@ -222,7 +223,7 @@ type GetTransactionsForAccountRow struct {
 	ID              uuid.UUID
 	Date            time.Time
 	Memo            string
-	Amount          Numeric
+	Amount          numeric.Numeric
 	GroupID         uuid.NullUUID
 	Status          TransactionStatus
 	Account         string
@@ -281,7 +282,7 @@ WHERE id = $7
 type UpdateTransactionParams struct {
 	Date       time.Time
 	Memo       string
-	Amount     Numeric
+	Amount     numeric.Numeric
 	AccountID  uuid.UUID
 	PayeeID    uuid.NullUUID
 	CategoryID uuid.NullUUID
diff --git a/postgres/ynab-export.go b/postgres/ynab-export.go
index 2fa1a4c..eefc9dd 100644
--- a/postgres/ynab-export.go
+++ b/postgres/ynab-export.go
@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"io"
 
+	"git.javil.eu/jacob1123/budgeteer/postgres/numeric"
 	"github.com/google/uuid"
 )
 
@@ -43,8 +44,8 @@ func (ynab *YNABExport) ExportAssignments(context context.Context, w io.Writer)
 			assignment.Group,
 			assignment.Category,
 			assignment.Amount.String() + "€",
-			NewZeroNumeric().String() + "€",
-			NewZeroNumeric().String() + "€",
+			numeric.Zero().String() + "€",
+			numeric.Zero().String() + "€",
 		}
 
 		err := csv.Write(row)
@@ -129,9 +130,9 @@ func GetTransactionRow(transaction GetAllTransactionsForBudgetRow) []string {
 	row = append(row, transaction.Memo)
 
 	if transaction.Amount.IsPositive() {
-		row = append(row, NewZeroNumeric().String()+"€", transaction.Amount.String()+"€")
+		row = append(row, numeric.Zero().String()+"€", transaction.Amount.String()+"€")
 	} else {
-		row = append(row, transaction.Amount.String()[1:]+"€", NewZeroNumeric().String()+"€")
+		row = append(row, transaction.Amount.String()[1:]+"€", numeric.Zero().String()+"€")
 	}
 
 	return append(row, string(transaction.Status))
diff --git a/postgres/ynab-import.go b/postgres/ynab-import.go
index 629a844..384e373 100644
--- a/postgres/ynab-import.go
+++ b/postgres/ynab-import.go
@@ -7,8 +7,8 @@ import (
 	"io"
 	"strings"
 	"time"
-	"unicode/utf8"
 
+	"git.javil.eu/jacob1123/budgeteer/postgres/numeric"
 	"github.com/google/uuid"
 )
 
@@ -242,7 +242,7 @@ func (ynab *YNABImport) ImportRegularTransaction(context context.Context, payeeN
 
 func (ynab *YNABImport) ImportTransferTransaction(context context.Context, payeeName string,
 	transaction CreateTransactionParams, openTransfers *[]Transfer,
-	account *Account, amount Numeric) error {
+	account *Account, amount numeric.Numeric) error {
 	transferToAccountName := payeeName[11:]
 	transferToAccount, err := ynab.GetAccount(context, transferToAccountName)
 	if err != nil {
@@ -295,34 +295,10 @@ func (ynab *YNABImport) ImportTransferTransaction(context context.Context, payee
 	return nil
 }
 
-func trimLastChar(s string) string {
-	r, size := utf8.DecodeLastRuneInString(s)
-	if r == utf8.RuneError && (size == 0 || size == 1) {
-		size = 0
-	}
-	return s[:len(s)-size]
-}
-
-func ParseNumeric(text string) (Numeric, error) {
-	// Remove trailing currency
-	text = trimLastChar(text)
-
-	// Unify decimal separator
-	text = strings.Replace(text, ",", ".", 1)
-
-	num := Numeric{}
-	err := num.Set(text)
+func GetAmount(inflow string, outflow string) (numeric.Numeric, error) {
+	in, err := numeric.Parse(inflow)
 	if err != nil {
-		return num, fmt.Errorf("parse numeric %s: %w", text, err)
-	}
-
-	return num, nil
-}
-
-func GetAmount(inflow string, outflow string) (Numeric, error) {
-	in, err := ParseNumeric(inflow)
-	if err != nil {
-		return in, err
+		return in, fmt.Errorf("parse inflow: %w", err)
 	}
 
 	if !in.IsZero() {
@@ -330,9 +306,9 @@ func GetAmount(inflow string, outflow string) (Numeric, error) {
 	}
 
 	// if inflow is zero, use outflow
-	out, err := ParseNumeric("-" + outflow)
+	out, err := numeric.Parse("-" + outflow)
 	if err != nil {
-		return out, err
+		return out, fmt.Errorf("parse outflow: %w", err)
 	}
 	return out, nil
 }
diff --git a/server/budgeting.go b/server/budgeting.go
index cccbbb5..b571d9c 100644
--- a/server/budgeting.go
+++ b/server/budgeting.go
@@ -7,6 +7,7 @@ import (
 	"time"
 
 	"git.javil.eu/jacob1123/budgeteer/postgres"
+	"git.javil.eu/jacob1123/budgeteer/postgres/numeric"
 	"github.com/gin-gonic/gin"
 	"github.com/google/uuid"
 )
@@ -24,19 +25,19 @@ func getFirstOfMonthTime(date time.Time) time.Time {
 
 type CategoryWithBalance struct {
 	*postgres.GetCategoriesRow
-	Available          postgres.Numeric
-	AvailableLastMonth postgres.Numeric
-	Activity           postgres.Numeric
-	Assigned           postgres.Numeric
+	Available          numeric.Numeric
+	AvailableLastMonth numeric.Numeric
+	Activity           numeric.Numeric
+	Assigned           numeric.Numeric
 }
 
 func NewCategoryWithBalance(category *postgres.GetCategoriesRow) CategoryWithBalance {
 	return CategoryWithBalance{
 		GetCategoriesRow:   category,
-		Available:          postgres.NewZeroNumeric(),
-		AvailableLastMonth: postgres.NewZeroNumeric(),
-		Activity:           postgres.NewZeroNumeric(),
-		Assigned:           postgres.NewZeroNumeric(),
+		Available:          numeric.Zero(),
+		AvailableLastMonth: numeric.Zero(),
+		Activity:           numeric.Zero(),
+		Assigned:           numeric.Zero(),
 	}
 }
 
@@ -101,15 +102,15 @@ func (h *Handler) budgetingForMonth(c *gin.Context) {
 
 	data := struct {
 		Categories       []CategoryWithBalance
-		AvailableBalance postgres.Numeric
+		AvailableBalance numeric.Numeric
 	}{categoriesWithBalance, availableBalance}
 	c.JSON(http.StatusOK, data)
 }
 
 func (*Handler) getAvailableBalance(categories []postgres.GetCategoriesRow, budget postgres.Budget,
-	moneyUsed postgres.Numeric, cumultativeBalances []postgres.GetCumultativeBalancesRow,
-	firstOfNextMonth time.Time) postgres.Numeric {
-	availableBalance := postgres.NewZeroNumeric()
+	moneyUsed numeric.Numeric, cumultativeBalances []postgres.GetCumultativeBalancesRow,
+	firstOfNextMonth time.Time) numeric.Numeric {
+	availableBalance := numeric.Zero()
 	for _, cat := range categories {
 		if cat.ID != budget.IncomeCategoryID {
 			continue
@@ -161,10 +162,10 @@ func (h *Handler) budgeting(c *gin.Context) {
 
 func (h *Handler) calculateBalances(budget postgres.Budget,
 	firstOfNextMonth time.Time, firstOfMonth time.Time, categories []postgres.GetCategoriesRow,
-	cumultativeBalances []postgres.GetCumultativeBalancesRow) ([]CategoryWithBalance, postgres.Numeric) {
+	cumultativeBalances []postgres.GetCumultativeBalancesRow) ([]CategoryWithBalance, numeric.Numeric) {
 	categoriesWithBalance := []CategoryWithBalance{}
 
-	moneyUsed := postgres.NewZeroNumeric()
+	moneyUsed := numeric.Zero()
 	for i := range categories {
 		cat := &categories[i]
 		// do not show hidden categories
@@ -183,7 +184,7 @@ func (h *Handler) calculateBalances(budget postgres.Budget,
 
 func (*Handler) CalculateCategoryBalances(cat *postgres.GetCategoriesRow,
 	cumultativeBalances []postgres.GetCumultativeBalancesRow, firstOfNextMonth time.Time,
-	moneyUsed *postgres.Numeric, firstOfMonth time.Time, budget postgres.Budget) CategoryWithBalance {
+	moneyUsed *numeric.Numeric, firstOfMonth time.Time, budget postgres.Budget) CategoryWithBalance {
 	categoryWithBalance := NewCategoryWithBalance(cat)
 	for _, bal := range cumultativeBalances {
 		if bal.CategoryID != cat.ID {
@@ -200,7 +201,7 @@ func (*Handler) CalculateCategoryBalances(cat *postgres.GetCategoriesRow,
 		categoryWithBalance.Available = categoryWithBalance.Available.Add(bal.Transactions)
 		if !categoryWithBalance.Available.IsPositive() && bal.Date.Before(firstOfMonth) {
 			*moneyUsed = moneyUsed.Add(categoryWithBalance.Available)
-			categoryWithBalance.Available = postgres.NewZeroNumeric()
+			categoryWithBalance.Available = numeric.Zero()
 		}
 
 		if bal.Date.Before(firstOfMonth) {
diff --git a/server/transaction.go b/server/transaction.go
index 05b0595..d3cad1b 100644
--- a/server/transaction.go
+++ b/server/transaction.go
@@ -6,6 +6,7 @@ import (
 	"time"
 
 	"git.javil.eu/jacob1123/budgeteer/postgres"
+	"git.javil.eu/jacob1123/budgeteer/postgres/numeric"
 	"github.com/gin-gonic/gin"
 	"github.com/google/uuid"
 )
@@ -35,7 +36,7 @@ func (h *Handler) newTransaction(c *gin.Context) {
 		return
 	}
 
-	amount := postgres.Numeric{}
+	amount := numeric.Numeric{}
 	err = amount.Set(payload.Amount)
 	if err != nil {
 		c.AbortWithError(http.StatusBadRequest, fmt.Errorf("amount: %w", err))
diff --git a/sqlc.yaml b/sqlc.yaml
index 4417ed2..00b9bc1 100644
--- a/sqlc.yaml
+++ b/sqlc.yaml
@@ -7,9 +7,11 @@ packages:
     queries: "postgres/queries/"
 overrides:
   - go_type: 
-      type: "Numeric"
+      import: "git.javil.eu/jacob1123/budgeteer/postgres/numeric"
+      type: Numeric
     db_type: "pg_catalog.numeric"
   - go_type: 
-      type: "Numeric"
+      import: "git.javil.eu/jacob1123/budgeteer/postgres/numeric"
+      type: Numeric
     db_type: "pg_catalog.numeric"
     nullable: true
\ No newline at end of file