diff --git a/FortnoxSDK.Tests/ConnectorTests/PredefinedAccountsTests.cs b/FortnoxSDK.Tests/ConnectorTests/PredefinedAccountsTests.cs
index c75abedb..7ead8302 100644
--- a/FortnoxSDK.Tests/ConnectorTests/PredefinedAccountsTests.cs
+++ b/FortnoxSDK.Tests/ConnectorTests/PredefinedAccountsTests.cs
@@ -1,7 +1,8 @@
-using System.Linq;
-using System.Threading.Tasks;
 using Fortnox.SDK;
+using Fortnox.SDK.Entities;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
+using System.Linq;
+using System.Threading.Tasks;
 
 namespace FortnoxSDK.Tests.ConnectorTests;
 
@@ -16,10 +17,10 @@ public async Task Test_PredefinedAccounts_CRUD()
         var connector = FortnoxClient.PredefinedAccountsConnector;
 
         //Get
-        var bygAccount = await connector.GetAsync("CONSTRUCTION_DEB");
+        var bygAccount = await connector.GetAsync(PredefinedAccountName.ReverseChargeSEDebit);
         Assert.AreEqual(2647, bygAccount.Account);
 
-        var patentAccount = await connector.GetAsync("PRODUCT_DEB");
+        var patentAccount = await connector.GetAsync(PredefinedAccountName.ReverseChargeGoodsEUDebit);
         Assert.AreEqual(2645, patentAccount.Account);
 
         //Update
@@ -52,4 +53,25 @@ public async Task Test_Find()
         Assert.AreEqual(42, limitedCollection.TotalResources);
         */
     }
+
+    /// <summary>
+    /// It looks like that not all the Fortnox account have all accounts
+    /// so this test may fail. Further investigations are needed in this regard.
+    /// </summary>
+    /// <returns></returns>
+    //[TestMethod]
+    //public async Task Test_FindAllAccounts()
+    //{
+    //    var connector = FortnoxClient.PredefinedAccountsConnector;
+
+    //    var fields = typeof(PredefinedAccountName)
+    //        .GetFields(BindingFlags.Public | BindingFlags.Static | BindingFlags.FlattenHierarchy)
+    //        .Where(fi => fi.IsLiteral && !fi.IsInitOnly);
+
+    //    foreach (var field in fields)
+    //    {
+    //        var predefineradAccount = await connector.GetAsync((string?)field.GetValue(null));
+    //        Assert.IsNotNull(predefineradAccount);
+    //    }
+    //}
 }
\ No newline at end of file
diff --git a/FortnoxSDK/Entities/Predefined Accounts/PredefinedAccountName.cs b/FortnoxSDK/Entities/Predefined Accounts/PredefinedAccountName.cs
new file mode 100644
index 00000000..7e235172
--- /dev/null
+++ b/FortnoxSDK/Entities/Predefined Accounts/PredefinedAccountName.cs	
@@ -0,0 +1,214 @@
+namespace Fortnox.SDK.Entities;
+
+public static class PredefinedAccountName
+{
+    #region Payment Accounts / Betalkonton
+    /// <summary>
+    /// Bankgiro
+    /// </summary>
+    public const string Bankgiro = "BG";
+    /// <summary>
+    /// Plusgiro
+    /// </summary>
+    public const string Plusgiro = "PG";
+    /// <summary>
+    /// Kontantbetalning
+    /// </summary>
+    public const string Cash = "CASH";
+    /// <summary>
+    /// Kontantbet. via kontokort
+    /// </summary>
+    public const string CashByCard = "CASHBYCARD";
+    /// <summary>
+    /// Autogiro
+    /// </summary>
+    public const string Autogiro = "AG";
+    #endregion
+
+    #region Purchase Accounts / Inköp
+    /// <summary>
+    /// Inköp
+    /// </summary>
+    public const string Purchases = "PURCASE";
+    /// <summary>
+    /// Leverantörsskuld
+    /// </summary>
+    public const string AccountsPayable = "SUPDEBT";
+    /// <summary>
+    /// Faktureringsavgift levfakt
+    /// </summary>
+    public const string PurchasesInvoiceFee = "SUPADMFEE";
+    /// <summary>
+    /// Frakt levfakt
+    /// </summary>
+    public const string PurchasesFreight = "SUPFREIGHT";
+    /// <summary>
+    /// Kassarabatt, erhållen
+    /// </summary>
+    public const string PurchasesCashDiscount = "CASHDISCOUNTIN";
+    #endregion
+
+    #region Sale Accounts / Försäljning
+    /// <summary>
+    /// Försäljning 25% vara
+    /// </summary>
+    public const string Sales25Goods = "SALES_25_SE";
+    /// <summary>
+    /// Försäljning 25% tjänst
+    /// </summary>
+    public const string Sales25Services = "SALES_25_SE2";
+    /// <summary>
+    /// Försäljning 12% vara
+    /// </summary>
+    public const string Sales12Goods = "SALES_12_SE";
+    /// <summary>
+    /// Försäljning 12% tjänst
+    /// </summary>
+    public const string Sales12Services = "SALES_12_SE2";
+    /// <summary>
+    /// Försäljning 6% vara
+    /// </summary>
+    public const string Sales6Goods = "SALES_6_SE";
+    /// <summary>
+    /// Försäljning 6% tjänst
+    /// </summary>
+    public const string Sales6Services = "SALES_6_SE2";
+    /// <summary>
+    /// Försäljning 0% vara
+    /// </summary>
+    public const string Sales0Goods = "SALES_0_SE";
+    /// <summary>
+    /// Försäljning 0% tjänst
+    /// </summary>
+    public const string Sales0Services = "SALES_0_SE2";
+    /// <summary>
+    /// Försäljning SE, omvänd skattskyldighet
+    /// </summary>
+    public const string SalesSEReverseCharge = "SALESCONSTR2";
+    /// <summary>
+    /// Försäljning EU vara, omvänd skattskyldighet
+    /// </summary>
+    public const string SalesEUGoodsReverseCharge = "SALESEUREV";
+    /// <summary>
+    /// Försäljning EU tjänst, omvänd skattskyldighet
+    /// </summary>
+    public const string SalesEUServicesReverseCharge = "SALESEUREV2";
+    /// <summary>
+    /// Försäljning EU vara, momspliktig
+    /// </summary>
+    public const string SalesEUGoodsVat = "SALESEUVAT";
+    /// <summary>
+    /// Försäljning EU tjänst, momspliktig
+    /// </summary>
+    public const string SalesEUServicesVat = "SALESEUVAT2";
+    /// <summary>
+    /// Försäljning Export vara
+    /// </summary>
+    public const string SalesExtraEUGoods = "SALESEXPORT";
+    /// <summary>
+    /// Försäljning Export tjänst
+    /// </summary>
+    public const string SalesExtraEUServices = "SALESEXPORT2";
+    /// <summary>
+    /// Kundfordran
+    /// </summary>
+    public const string AccountsReceivable = "CUSTCLAIM";
+    /// <summary>
+    /// Faktureringsavgift
+    /// </summary>
+    public const string SalesInvoiceFee = "ADMFEE";
+    /// <summary>
+    /// Frakt
+    /// </summary>
+    public const string SalesFreight = "FREIGHT";
+    /// <summary>
+    /// Kassarabatt, lämnad
+    /// </summary>
+    public const string SalesCashDiscount = "CASHDISCOUNTOUT";
+    /// <summary>
+    /// Påminnelseavgift
+    /// </summary>
+    public const string ReminderFee = "DEMAND";
+    /// <summary>
+    /// Dröjsmålsränta
+    /// </summary>
+    public const string PenaltyInterest = "INTEREST";
+    /// <summary>
+    /// Avrundning
+    /// </summary>
+    public const string Rounding = "ROUNDOFF";
+    #endregion
+
+    #region Vat Accounts / Moms
+    /// <summary>
+    /// Utgående Moms MP1 25%
+    /// </summary>
+    public const string SalesVat1 = "OUTVAT_MP1";
+    /// <summary>
+    /// Utgående Moms MP2 12%
+    /// </summary>
+    public const string SalesVat2 = "OUTVAT_MP2";
+    /// <summary>
+    /// Utgående Moms MP3 6%
+    /// </summary>
+    public const string SalesVat3 = "OUTVAT_MP3";
+    /// <summary>
+    /// Ingående moms
+    /// </summary>
+    public const string PurchasesVat = "INVAT";
+    /// <summary>
+    /// Vara unionsinternt förvärv debit
+    /// </summary>
+    public const string ReverseChargeGoodsEUDebit = "PRODUCT_DEB";
+    /// <summary>
+    /// Vara unionsinternt förvärv credit
+    /// </summary>
+    public const string ReverseChargeGoodsEUCredit = "PRODUCT_CRE";
+    /// <summary>
+    /// Tjänst unionsinternt förvärv debit
+    /// </summary>
+    public const string ReverseChargeServicesEUDebit = "SERVICE_DEB";
+    /// <summary>
+    /// Tjänst unionsinternt förvärv credit
+    /// </summary>
+    public const string ReverseChargeServicesEUCredit = "SERVICE_CRE";
+    /// <summary>
+    /// Inköp SE, omvänd skattskyldighet debit
+    /// </summary>
+    public const string ReverseChargeSEDebit = "CONSTRUCTION_DEB";
+    /// <summary>
+    /// Inköp SE, omvänd skattskyldighet credit
+    /// </summary>
+    public const string ReverseChargeSECredit = "CONSTRUCTION_CRE";
+    #endregion
+
+    #region Accrual Accounts / Periodisering
+    /// <summary>
+    /// Periodiseringskonto levfakt
+    /// </summary>
+    public const string AccrualAccountSupplierInvoice = "ACCRSINVOICE";
+    /// <summary>
+    /// Periodiseringskonto kundfakt
+    /// </summary>
+    public const string AccrualAccountCustomerInvoice = "ACCRINVOICE";
+    /// <summary>
+    /// Intäktskonto periodisering
+    /// </summary>
+    public const string AccruedIncome = "ACCRINCOME";
+    /// <summary>
+    /// Kostnadskonto periodisering
+    /// </summary>
+    public const string AccruedCost = "ACCRCOST";
+    #endregion
+
+    #region Other Accounts / Övrigt
+    /// <summary>
+    /// Valutakursvinster
+    /// </summary>
+    public const string ExchangeGain = "CURRENCYWIN";
+    /// <summary>
+    /// Valutakursförluster
+    /// </summary>
+    public const string ExchangeLoss = "CURRENCYLOSS";
+    #endregion
+}