diff --git a/CHANGELOG.md b/CHANGELOG.md
index bcf2ad4f5..eafcc9d2e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- Added support to update the cash balance of an account when adding a fee activity
+- Added support to update the cash balance of an account when adding an interest activity
 - Extended the content of the _General_ section by the product roadmap on the Frequently Asked Questions (FAQ) page
 
 ### Changed
diff --git a/apps/api/src/app/order/order.service.ts b/apps/api/src/app/order/order.service.ts
index 1603ed530..3efb5fe95 100644
--- a/apps/api/src/app/order/order.service.ts
+++ b/apps/api/src/app/order/order.service.ts
@@ -148,7 +148,7 @@ export class OrderService {
         .plus(data.fee)
         .toNumber();
 
-      if (data.type === 'BUY') {
+      if (['BUY', 'FEE'].includes(data.type)) {
         amount = new Big(amount).mul(-1).toNumber();
       }
 
diff --git a/apps/client/src/app/pages/portfolio/activities/create-or-update-activity-dialog/create-or-update-activity-dialog.component.ts b/apps/client/src/app/pages/portfolio/activities/create-or-update-activity-dialog/create-or-update-activity-dialog.component.ts
index 34da992fe..b628aba46 100644
--- a/apps/client/src/app/pages/portfolio/activities/create-or-update-activity-dialog/create-or-update-activity-dialog.component.ts
+++ b/apps/client/src/app/pages/portfolio/activities/create-or-update-activity-dialog/create-or-update-activity-dialog.component.ts
@@ -260,6 +260,17 @@ export class CreateOrUpdateActivityDialog implements OnDestroy {
           this.activityForm.controls['currency'].setValue(currency);
           this.activityForm.controls['currencyOfFee'].setValue(currency);
           this.activityForm.controls['currencyOfUnitPrice'].setValue(currency);
+
+          if (['FEE', 'INTEREST'].includes(type)) {
+            if (this.activityForm.controls['accountId'].value) {
+              this.activityForm.controls['updateAccountBalance'].enable();
+            } else {
+              this.activityForm.controls['updateAccountBalance'].disable();
+              this.activityForm.controls['updateAccountBalance'].setValue(
+                false
+              );
+            }
+          }
         }
       }
     );
@@ -374,8 +385,15 @@ export class CreateOrUpdateActivityDialog implements OnDestroy {
             this.activityForm.controls['unitPriceInCustomCurrency'].setValue(0);
           }
 
-          this.activityForm.controls['updateAccountBalance'].disable();
-          this.activityForm.controls['updateAccountBalance'].setValue(false);
+          if (
+            ['FEE', 'INTEREST'].includes(type) &&
+            this.activityForm.controls['accountId'].value
+          ) {
+            this.activityForm.controls['updateAccountBalance'].enable();
+          } else {
+            this.activityForm.controls['updateAccountBalance'].disable();
+            this.activityForm.controls['updateAccountBalance'].setValue(false);
+          }
         } else {
           this.activityForm.controls['accountId'].setValidators(
             Validators.required