diff --git a/.changeset/pretty-rules-sort.md b/.changeset/pretty-rules-sort.md
new file mode 100644
index 0000000000000..df367f81a852f
--- /dev/null
+++ b/.changeset/pretty-rules-sort.md
@@ -0,0 +1,5 @@
+---
+'@mysten/sui': patch
+---
+
+Remove duplicate applyEffects in serial transaction executor
diff --git a/sdk/typescript/src/transactions/ObjectCache.ts b/sdk/typescript/src/transactions/ObjectCache.ts
index bd6a61c5ccc1f..e5accd58d50ac 100644
--- a/sdk/typescript/src/transactions/ObjectCache.ts
+++ b/sdk/typescript/src/transactions/ObjectCache.ts
@@ -148,13 +148,16 @@ export class InMemoryCache extends AsyncCache {
 
 export interface ObjectCacheOptions {
 	cache?: AsyncCache;
+	onEffects?: (effects: typeof bcs.TransactionEffects.$inferType) => Promise<void>;
 }
 
 export class ObjectCache {
 	#cache: AsyncCache;
+	#onEffects?: (effects: typeof bcs.TransactionEffects.$inferType) => Promise<void>;
 
-	constructor({ cache = new InMemoryCache() }: ObjectCacheOptions) {
+	constructor({ cache = new InMemoryCache(), onEffects }: ObjectCacheOptions) {
 		this.#cache = cache;
+		this.#onEffects = onEffects;
 	}
 
 	asPlugin(): TransactionPlugin {
@@ -291,6 +294,7 @@ export class ObjectCache {
 		await Promise.all([
 			this.#cache.addObjects(addedObjects),
 			this.#cache.deleteObjects(deletedIds),
+			this.#onEffects?.(effects),
 		]);
 	}
 }
diff --git a/sdk/typescript/src/transactions/executor/serial.ts b/sdk/typescript/src/transactions/executor/serial.ts
index 0e25ed95c0445..fc121277ee6dc 100644
--- a/sdk/typescript/src/transactions/executor/serial.ts
+++ b/sdk/typescript/src/transactions/executor/serial.ts
@@ -3,7 +3,7 @@
 
 import { toBase64 } from '@mysten/bcs';
 
-import { bcs } from '../../bcs/index.js';
+import type { bcs } from '../../bcs/index.js';
 import type { SuiClient, SuiTransactionBlockResponseOptions } from '../../client/index.js';
 import type { Signer } from '../../cryptography/keypair.js';
 import type { ObjectCacheOptions } from '../ObjectCache.js';
@@ -32,11 +32,12 @@ export class SerialTransactionExecutor {
 		this.#cache = new CachingTransactionExecutor({
 			client: options.client,
 			cache: options.cache,
+			onEffects: (effects) => this.#cacheGasCoin(effects),
 		});
 	}
 
 	async applyEffects(effects: typeof bcs.TransactionEffects.$inferType) {
-		return Promise.all([this.#cacheGasCoin(effects), this.#cache.cache.applyEffects(effects)]);
+		return this.#cache.applyEffects(effects);
 	}
 
 	#cacheGasCoin = async (effects: typeof bcs.TransactionEffects.$inferType) => {
@@ -104,9 +105,6 @@ export class SerialTransactionExecutor {
 				});
 
 			const effectsBytes = Uint8Array.from(results.rawEffects!);
-			const effects = bcs.TransactionEffects.parse(effectsBytes);
-			await this.applyEffects(effects);
-
 			return {
 				digest: results.digest,
 				effects: toBase64(effectsBytes),