diff --git a/Maple2.Database/Storage/Metadata/TableMetadataStorage.cs b/Maple2.Database/Storage/Metadata/TableMetadataStorage.cs
index 8caf0f403..86cafefee 100644
--- a/Maple2.Database/Storage/Metadata/TableMetadataStorage.cs
+++ b/Maple2.Database/Storage/Metadata/TableMetadataStorage.cs
@@ -14,6 +14,7 @@ public class TableMetadataStorage {
     private readonly Lazy<MagicPathTable> magicPathTable;
     private readonly Lazy<MasteryRecipeTable> masteryRecipeTable;
     private readonly Lazy<MasteryRewardTable> masteryRewardTable;
+    private readonly Lazy<MasteryDifferentialFactorTable> masteryDifferentialFactorTable;
     private readonly Lazy<FishingRodTable> fishingRodTable;
     private readonly Lazy<InstrumentTable> instrumentTable;
     private readonly Lazy<InteractObjectTable> interactObjectTable;
@@ -80,6 +81,7 @@ public class TableMetadataStorage {
     public MagicPathTable MagicPathTable => magicPathTable.Value;
     public MasteryRecipeTable MasteryRecipeTable => masteryRecipeTable.Value;
     public MasteryRewardTable MasteryRewardTable => masteryRewardTable.Value;
+    public MasteryDifferentialFactorTable MasteryDifferentialFactorTable => masteryDifferentialFactorTable.Value;
     public FishingRodTable FishingRodTable => fishingRodTable.Value;
     public InstrumentTable InstrumentTable => instrumentTable.Value;
     public InteractObjectTable InteractObjectTable => interactObjectTable.Value;
@@ -147,6 +149,7 @@ public TableMetadataStorage(MetadataContext context) {
         magicPathTable = Retrieve<MagicPathTable>(context, TableNames.MAGIC_PATH);
         masteryRecipeTable = Retrieve<MasteryRecipeTable>(context, TableNames.MASTERY_RECIPE);
         masteryRewardTable = Retrieve<MasteryRewardTable>(context, TableNames.MASTERY);
+        masteryDifferentialFactorTable = Retrieve<MasteryDifferentialFactorTable>(context, TableNames.MASTERYT_DIFFERENTIAL_FACTOR);
         fishingRodTable = Retrieve<FishingRodTable>(context, TableNames.FISHING_ROD);
         instrumentTable = Retrieve<InstrumentTable>(context, TableNames.INSTRUMENT_CATEGORY_INFO);
         interactObjectTable = Retrieve<InteractObjectTable>(context, TableNames.INTERACT_OBJECT);
diff --git a/Maple2.File.Ingest/Mapper/TableMapper.cs b/Maple2.File.Ingest/Mapper/TableMapper.cs
index 05826a4cf..e3288db07 100644
--- a/Maple2.File.Ingest/Mapper/TableMapper.cs
+++ b/Maple2.File.Ingest/Mapper/TableMapper.cs
@@ -59,6 +59,7 @@ protected override IEnumerable<TableMetadata> Map() {
         yield return new TableMetadata { Name = TableNames.ITEM_SOCKET, Table = ParseItemSocketTable() };
         yield return new TableMetadata { Name = TableNames.MASTERY_RECIPE, Table = ParseMasteryRecipe() };
         yield return new TableMetadata { Name = TableNames.MASTERY, Table = ParseMasteryReward() };
+        yield return new TableMetadata { Name = TableNames.MASTERYT_DIFFERENTIAL_FACTOR, Table = ParseMasteryDifferentialFactor() };
         yield return new TableMetadata { Name = TableNames.GUILD, Table = ParseGuildTable() };
         yield return new TableMetadata { Name = TableNames.VIP, Table = ParsePremiumClubTable() };
         yield return new TableMetadata { Name = TableNames.INDIVIDUAL_ITEM_DROP, Table = ParseIndividualItemDropTable() };
@@ -776,6 +777,16 @@ private MasteryRewardTable ParseMasteryReward() {
         return new MasteryRewardTable(results);
     }
 
+    private MasteryDifferentialFactorTable ParseMasteryDifferentialFactor() {
+        var results = new Dictionary<int, MasteryDifferentialFactorTable.Entry>();
+        foreach ((int id, MasteryDifferentialFactor factor) in parser.ParseMasteryDifferentialFactor()) {
+            results.Add(id, new MasteryDifferentialFactorTable.Entry(
+                Differential: factor.differential,
+                Factor: factor.factor));
+        }
+        return new MasteryDifferentialFactorTable(results);
+    }
+
     private GuildTable ParseGuildTable() {
         // Dictionary<short, int> expTable = parser.ParseGuildExp()
         //     .ToDictionary(entry => (short) entry.Id, entry => entry.Item.value);
diff --git a/Maple2.Model/Common/TableNames.cs b/Maple2.Model/Common/TableNames.cs
index 6df45fdaf..100fef6c1 100644
--- a/Maple2.Model/Common/TableNames.cs
+++ b/Maple2.Model/Common/TableNames.cs
@@ -15,6 +15,7 @@ public static class TableNames {
     public const string ITEM_SOCKET = "itemsocket.xml";
     public const string MASTERY_RECIPE = "masteryreceipe.xml";
     public const string MASTERY = "mastery.xml";
+    public const string MASTERYT_DIFFERENTIAL_FACTOR = "masterydifferentialfactor.xml";
     public const string GUILD = "guild*.xml";
     public const string VIP = "vip*.xml";
     public const string INDIVIDUAL_ITEM_DROP = "individualitemdrop*.xml";
diff --git a/Maple2.Model/Metadata/Table/MasteryDifferentialFactorTable.cs b/Maple2.Model/Metadata/Table/MasteryDifferentialFactorTable.cs
new file mode 100644
index 000000000..2bdba1a16
--- /dev/null
+++ b/Maple2.Model/Metadata/Table/MasteryDifferentialFactorTable.cs
@@ -0,0 +1,9 @@
+namespace Maple2.Model.Metadata;
+
+public record MasteryDifferentialFactorTable(IReadOnlyDictionary<int, MasteryDifferentialFactorTable.Entry> Entries) : Table {
+    public record Entry(
+        int Differential,
+        int Factor);
+}
+
+
diff --git a/Maple2.Model/Metadata/TableMetadata.cs b/Maple2.Model/Metadata/TableMetadata.cs
index 044a8fafc..e16d9266c 100644
--- a/Maple2.Model/Metadata/TableMetadata.cs
+++ b/Maple2.Model/Metadata/TableMetadata.cs
@@ -47,6 +47,7 @@ public override int GetHashCode() {
 [JsonDerivedType(typeof(ChatStickerTable), typeDiscriminator: "chatsticker")]
 [JsonDerivedType(typeof(MasteryRecipeTable), typeDiscriminator: "masteryrecipe")]
 [JsonDerivedType(typeof(MasteryRewardTable), typeDiscriminator: "masteryreward")]
+[JsonDerivedType(typeof(MasteryDifferentialFactorTable), typeDiscriminator: "masterydifferentialfactor")]
 [JsonDerivedType(typeof(FishingRodTable), typeDiscriminator: "fishingrod")]
 [JsonDerivedType(typeof(GuildTable), typeDiscriminator: "guild")]
 [JsonDerivedType(typeof(PremiumClubTable), typeDiscriminator: "vip")]
diff --git a/Maple2.Server.Game/Manager/MasteryManager.cs b/Maple2.Server.Game/Manager/MasteryManager.cs
index 9be8ceb43..7c772bb4d 100644
--- a/Maple2.Server.Game/Manager/MasteryManager.cs
+++ b/Maple2.Server.Game/Manager/MasteryManager.cs
@@ -134,10 +134,25 @@ private bool GatherCommon(int recipeId, Vector3 position, Vector3 rotation) {
         }
 
         Gather(recipeMetadata, position, rotation);
-        this[recipeMetadata.Type] += recipeMetadata.RewardMastery;
         if (!recipeMetadata.NoRewardExp) {
             session.Exp.AddExp(ExpType.gathering);
         }
+        switch (recipeMetadata.Type) {
+            case MasteryType.Farming:
+            case MasteryType.Mining:
+            case MasteryType.Gathering:
+            case MasteryType.Breeding:
+                short playerLevel = GetLevel(recipeMetadata.Type);
+                // no mastery given - recipe level is more than 3 levels below player's mastery level
+                int masteryFactorCount = session.TableMetadata.MasteryDifferentialFactorTable.Entries.Values.Count(m => m.Factor > 0);
+                if (playerLevel - recipeMetadata.RewardMastery >= masteryFactorCount) {
+                    return true;
+                }
+                break;
+            default:
+                break;
+        }
+        this[recipeMetadata.Type] += recipeMetadata.RewardMastery;
         return true;
     }