diff --git a/src/card/services/card.service.ts b/src/card/services/card.service.ts
index 23c6f6f..5c2dc4e 100644
--- a/src/card/services/card.service.ts
+++ b/src/card/services/card.service.ts
@@ -148,7 +148,11 @@ export class CardService {
   async transferToChild(juniorId: string, amount: number) {
     const card = await this.getCardByCustomerId(juniorId);
 
-    if (amount > card.account.balance - card.account.reservedBalance) {
+    const fundingAccount = card.parentId
+      ? await this.accountService.getAccountByCustomerId(card.parentId)
+      : card.account;
+
+    if (amount > fundingAccount.balance - fundingAccount.reservedBalance) {
       throw new BadRequestException('CARD.INSUFFICIENT_BALANCE');
     }
 
@@ -156,7 +160,7 @@ export class CardService {
     await Promise.all([
       this.neoleapService.updateCardControl(card.cardReference, finalAmount.toNumber()),
       this.updateCardLimit(card.id, finalAmount.toNumber()),
-      this.accountService.increaseReservedBalance(card.account, amount),
+      this.accountService.increaseReservedBalance(fundingAccount, amount),
       this.transactionService.createInternalChildTransaction(card.id, amount),
     ]);
 
diff --git a/src/card/services/transaction.service.ts b/src/card/services/transaction.service.ts
index 39ca853..613d10c 100644
--- a/src/card/services/transaction.service.ts
+++ b/src/card/services/transaction.service.ts
@@ -42,10 +42,18 @@ export class TransactionService {
     const total = new Decimal(body.transactionAmount).plus(body.billingAmount).plus(body.fees).plus(body.vatOnFees);
 
     if (card.customerType === CustomerType.CHILD) {
-      await Promise.all([
-        this.accountService.decreaseAccountBalance(card.account.accountReference, total.toNumber()),
-        this.accountService.decrementReservedBalance(card.account, total.toNumber()),
-      ]);
+      if (card.parentId) {
+        const parentAccount = await this.accountService.getAccountByCustomerId(card.parentId);
+        await Promise.all([
+          this.accountService.decreaseAccountBalance(parentAccount.accountReference, total.toNumber()),
+          this.accountService.decrementReservedBalance(parentAccount, total.toNumber()),
+        ]);
+      } else {
+        await Promise.all([
+          this.accountService.decreaseAccountBalance(card.account.accountReference, total.toNumber()),
+          this.accountService.decrementReservedBalance(card.account, total.toNumber()),
+        ]);
+      }
     } else {
       await this.accountService.decreaseAccountBalance(card.account.accountReference, total.toNumber());
     }