diff --git a/src/transaction_builder_v2.js b/src/transaction_builder_v2.js
index d46aae5..3cabe06 100644
--- a/src/transaction_builder_v2.js
+++ b/src/transaction_builder_v2.js
@@ -139,6 +139,9 @@ class TransactionBuilderV2 {
       value,
     });
   }
+  get inputCount() {
+    return this.__INPUTS.length;
+  }
   addOutput(scriptPubKey, value) {
     if (!this.__canModifyOutputs()) {
       throw new Error('No, this would invalidate signatures');
diff --git a/ts_src/transaction_builder_v2.ts b/ts_src/transaction_builder_v2.ts
index aeedc89..9d9b29a 100644
--- a/ts_src/transaction_builder_v2.ts
+++ b/ts_src/transaction_builder_v2.ts
@@ -226,6 +226,10 @@ export class TransactionBuilderV2 {
     });
   }
 
+  get inputCount(): number {
+    return this.__INPUTS.length;
+  }
+
   addOutput(scriptPubKey: string | Buffer, value: number): number {
     if (!this.__canModifyOutputs()) {
       throw new Error('No, this would invalidate signatures');
diff --git a/types/transaction_builder_v2.d.ts b/types/transaction_builder_v2.d.ts
index ebce07d..903f8ca 100644
--- a/types/transaction_builder_v2.d.ts
+++ b/types/transaction_builder_v2.d.ts
@@ -16,6 +16,7 @@ export declare class TransactionBuilderV2 {
     setLockTime(locktime: number): void;
     setVersion(version: number): void;
     addInput(txHash: Buffer | string | Transaction, vout: number, sequence?: number, prevOutScript?: Buffer): number;
+    readonly inputCount: number;
     addOutput(scriptPubKey: string | Buffer, value: number): number;
     build(): Transaction;
     buildIncomplete(): Transaction;