diff --git a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecobits/EcoBitsPlugin.kt b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecobits/EcoBitsPlugin.kt
index 213c5fe..cc28135 100644
--- a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecobits/EcoBitsPlugin.kt
+++ b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecobits/EcoBitsPlugin.kt
@@ -8,6 +8,8 @@ import com.willfp.ecobits.integrations.IntegrationVault
 import org.bukkit.event.Listener
 
 class EcoBitsPlugin : EcoPlugin() {
+    val serverID = configYml.getString("server-id")
+
     init {
         instance = this
     }
diff --git a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecobits/currencies/Currency.kt b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecobits/currencies/Currency.kt
index ad15c7f..28a66c4 100644
--- a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecobits/currencies/Currency.kt
+++ b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecobits/currencies/Currency.kt
@@ -2,7 +2,6 @@
 
 package com.willfp.ecobits.currencies
 
-import com.willfp.eco.core.EcoPlugin
 import com.willfp.eco.core.config.interfaces.Config
 import com.willfp.eco.core.data.keys.PersistentDataKey
 import com.willfp.eco.core.data.keys.PersistentDataKeyType
@@ -12,6 +11,7 @@ import com.willfp.eco.core.placeholder.PlayerPlaceholder
 import com.willfp.eco.core.placeholder.PlayerlessPlaceholder
 import com.willfp.eco.core.price.Prices
 import com.willfp.eco.util.toNiceString
+import com.willfp.ecobits.EcoBitsPlugin
 import com.willfp.ecobits.integrations.IntegrationVault
 import net.milkbowl.vault.economy.Economy
 import org.bukkit.Bukkit
@@ -24,17 +24,11 @@ import kotlin.math.pow
 
 class Currency(
     val id: String,
-    val plugin: EcoPlugin,
+    val plugin: EcoBitsPlugin,
     val config: Config
 ) {
     val default = config.getDouble("default")
 
-    val key = PersistentDataKey(
-        plugin.createNamespacedKey(id),
-        PersistentDataKeyType.DOUBLE,
-        default
-    )
-
     val name = config.getFormattedString("name")
     val max = config.getDouble("max").let { if (it < 0) Double.MAX_VALUE else it }
 
@@ -44,6 +38,14 @@ class Currency(
 
     val isRegisteredWithVault = config.getBool("vault")
 
+    val isLocal = config.getBool("local")
+
+    val key = PersistentDataKey(
+        plugin.createNamespacedKey(if (isLocal) "${plugin.serverID}_${id}" else id),
+        PersistentDataKeyType.DOUBLE,
+        default
+    )
+
     init {
         PlaceholderManager.registerPlaceholder(
             PlayerPlaceholder(
diff --git a/eco-core/core-plugin/src/main/resources/config.yml b/eco-core/core-plugin/src/main/resources/config.yml
index 8381e07..af9c96c 100644
--- a/eco-core/core-plugin/src/main/resources/config.yml
+++ b/eco-core/core-plugin/src/main/resources/config.yml
@@ -14,6 +14,8 @@
 # %ecobits_<id>_default% - The default balance of a certain currency
 # %ecobits_<id>_name% - The display name of a certain currency
 
+server-id: "main" # Server ID for local currencies over MySQL/MongoDB.
+
 currencies:
   - id: crystals # The ID of the currency.
     name: "&bCrystals ❖" # The name of the currency.
@@ -22,3 +24,4 @@ currencies:
     payable: false # If players should be able to use /ecobits pay to pay other players
     decimal: true # If decimal amounts are allowed rather than just integer amounts
     vault: false # If this currency should be registered with vault
+    local: false # If this currency should not sync between servers