diff --git a/src/phases/game-over-phase.ts b/src/phases/game-over-phase.ts
index b0cfa5c55e2..8ecf1478b99 100644
--- a/src/phases/game-over-phase.ts
+++ b/src/phases/game-over-phase.ts
@@ -238,7 +238,7 @@ export class GameOverPhase extends BattlePhase {
       enemyModifiers: this.scene.findModifiers(() => true, false).map(m => new PersistentModifierData(m, false)),
       arena: new ArenaData(this.scene.arena),
       pokeballCounts: this.scene.pokeballCounts,
-      money: this.scene.money,
+      money: Math.floor(this.scene.money),
       score: this.scene.score,
       waveIndex: this.scene.currentBattle.waveIndex,
       battleType: this.scene.currentBattle.battleType,
diff --git a/src/system/game-data.ts b/src/system/game-data.ts
index 63c7cb1b13a..af5e717c17b 100644
--- a/src/system/game-data.ts
+++ b/src/system/game-data.ts
@@ -957,7 +957,7 @@ export class GameData {
       enemyModifiers: scene.findModifiers(() => true, false).map(m => new PersistentModifierData(m, false)),
       arena: new ArenaData(scene.arena),
       pokeballCounts: scene.pokeballCounts,
-      money: scene.money,
+      money: Math.floor(scene.money),
       score: scene.score,
       waveIndex: scene.currentBattle.waveIndex,
       battleType: scene.currentBattle.battleType,
@@ -1047,7 +1047,7 @@ export class GameData {
             scene.pokeballCounts = Overrides.POKEBALL_OVERRIDE.pokeballs;
           }
 
-          scene.money = sessionData.money || 0;
+          scene.money = Math.floor(sessionData.money || 0);
           scene.updateMoneyText();
 
           if (scene.money > this.gameStats.highestMoney) {
diff --git a/src/system/version-converter.ts b/src/system/version-converter.ts
index 0591647aeaa..3a4416a975e 100644
--- a/src/system/version-converter.ts
+++ b/src/system/version-converter.ts
@@ -6,6 +6,10 @@ const LATEST_VERSION = "1.0.5";
 
 export function applySessionDataPatches(data: SessionSaveData) {
   const curVersion = data.gameVersion;
+
+  // Always sanitize money as a safeguard
+  data.money = Math.floor(data.money);
+
   if (curVersion !== LATEST_VERSION) {
     switch (curVersion) {
     case "1.0.0":