diff --git a/src/modifier/modifier-type.ts b/src/modifier/modifier-type.ts
index 4fcde32605e..ca404b8ed42 100644
--- a/src/modifier/modifier-type.ts
+++ b/src/modifier/modifier-type.ts
@@ -683,7 +683,7 @@ export const modifierTypes = {
 
   AMULET_COIN: () => new ModifierType('Amulet Coin', 'Increases money rewards by 20%', (type, _args) => new Modifiers.MoneyMultiplierModifier(type)),
   GOLDEN_PUNCH: () => new PokemonHeldItemModifierType('Golden Punch', 'Grants 20% of damage inflicted as money', (type, args) => new Modifiers.DamageMoneyRewardModifier(type, (args[0] as Pokemon).id)),
-  COIN_CASE: () => new ModifierType('Coin Case', 'After every 10th battle, receive money equivalent to 20% of your money', (type, _args) => new Modifiers.MoneyInterestModifier(type)),
+  COIN_CASE: () => new ModifierType('Coin Case', 'After every 10th battle, receive 10% of your money in interest', (type, _args) => new Modifiers.MoneyInterestModifier(type)),
 
   GRIP_CLAW: () => new ContactHeldItemTransferChanceModifierType('Grip Claw', 10),
 
diff --git a/src/modifier/modifier.ts b/src/modifier/modifier.ts
index fcde1cb4da8..0c88ab3ba05 100644
--- a/src/modifier/modifier.ts
+++ b/src/modifier/modifier.ts
@@ -1190,7 +1190,7 @@ export class MoneyInterestModifier extends PersistentModifier {
 
   apply(args: any[]): boolean {
     const scene = args[0] as BattleScene;
-    const interestAmount = Math.floor(scene.money * 0.2 * this.getStackCount());
+    const interestAmount = Math.floor(scene.money * 0.1 * this.getStackCount());
     scene.money += interestAmount;
     scene.updateMoneyText();
     scene.validateAchvs(MoneyAchv);