diff --git a/demo/app/pages/home.component.ts b/demo/app/pages/home.component.ts
index 81801d3..1f84ef8 100644
--- a/demo/app/pages/home.component.ts
+++ b/demo/app/pages/home.component.ts
@@ -192,6 +192,9 @@ export class HomeComponent implements AfterViewInit, OnInit {
         console.log('onClick');
         this.resetStatus();
       },
+      onInit: (data, actions) => {
+        console.log('onInit', data, actions);
+      }
     };
   }
 
diff --git a/projects/ngx-paypal-lib/src/lib/components/paypal.component.ts b/projects/ngx-paypal-lib/src/lib/components/paypal.component.ts
index 6c0e517..220fb86 100644
--- a/projects/ngx-paypal-lib/src/lib/components/paypal.component.ts
+++ b/projects/ngx-paypal-lib/src/lib/components/paypal.component.ts
@@ -25,6 +25,8 @@ import {
     IOnShippingChangeActions,
     IOnShippingChangeData,
     IPayPalConfig,
+    IInitCallbackData,
+    IOnInitCallbackActions,
 } from '../models/paypal-models';
 import { PayPalScriptService } from '../services/paypal-script.service';
 
@@ -246,6 +248,11 @@ export class NgxPaypalComponent implements OnChanges, OnDestroy, AfterViewInit {
                         config.onClick();
                     }
                 },
+                onInit: (data: IInitCallbackData, actions: IOnInitCallbackActions) => {
+                    	if(config.onInit){
+                            config.onInit(data, actions);
+                        }
+                }
             }).render(`#${this.payPalButtonContainerId}`);
         });
     }
diff --git a/projects/ngx-paypal-lib/src/lib/models/paypal-models.ts b/projects/ngx-paypal-lib/src/lib/models/paypal-models.ts
index e37223b..93eec72 100644
--- a/projects/ngx-paypal-lib/src/lib/models/paypal-models.ts
+++ b/projects/ngx-paypal-lib/src/lib/models/paypal-models.ts
@@ -66,6 +66,12 @@ export interface IPayPalConfig {
      * Cancel handler
      */
     onCancel?: (data: ICancelCallbackData, actions: any) => void;
+
+    /**
+     * Init handler.
+     * can be used for validation, see: https://developer.paypal.com/docs/checkout/integration-features/validation/#
+     */
+    onInit?: (data: IInitCallbackData, actions: IOnInitCallbackActions) => void;
 }
 
 export type TrueFalse = 'true' | 'false';
@@ -149,6 +155,15 @@ export interface IOnApproveCallbackActions {
     };
 }
 
+export interface IOnInitCallbackActions {
+    enable: () => void;
+    disable: () => void;
+}
+
+export interface IInitCallbackData {
+
+}
+
 export interface IPayPalButtonStyle {
     label?: 'paypal' | 'checkout' | 'pay' | 'installment';
     size?: 'small' | 'medium' | 'large' | 'responsive';