diff --git a/index.html b/index.html
index aeb0e6488..df4759e28 100644
--- a/index.html
+++ b/index.html
@@ -675,6 +675,7 @@
                   <div class="row collapse">
                     <label for="amount">Amount
                       <small ng-hide="!sendForm.amount.$pristine">required</small>
+                      <i class="fi-arrow-up" title="Send all funds" ng-click="topAmount()"></i>
                       <small class="is-valid" ng-show="!sendForm.amount.$invalid && !sendForm.amount.$pristine">Valid</small>
                       <small class="has-error" ng-show="sendForm.amount.$invalid && !sendForm.amount.$pristine && !notEnoughAmount">
                         Not valid
@@ -717,7 +718,7 @@
                       <small class="is-valid" ng-show="!sendForm.comment.$invalid && !sendForm.comment.$pristine">valid!</small>
                       <small class="has-error" ng-show="sendForm.comment.$invalid && !sendForm.comment.$pristine">too long!</small>
                     </label>
-                    <div class="small-12 columns">
+                    <div class="large-12 columns">
                       <textarea id="comment" ng-disabled="loading"
                       name="comment" placeholder="Leave a private message to your copayers" ng-model="commentText" ng-maxlength="100"></textarea>
                     </div>
diff --git a/js/controllers/send.js b/js/controllers/send.js
index 49a5506c8..349d60d82 100644
--- a/js/controllers/send.js
+++ b/js/controllers/send.js
@@ -33,7 +33,7 @@ angular.module('copayApp.controllers').controller('SendController',
     $scope.submitForm = function(form) {
       if (form.$invalid) {
         $rootScope.$flashMessage = {
-          message: 'You can not send a proposal transaction. Please, try again',
+          message: 'Unable to send a transaction proposal. Please, try again',
           type: 'error'
         };
         return;
@@ -254,4 +254,9 @@ angular.module('copayApp.controllers').controller('SendController',
       });
     };
 
+    $scope.topAmount = function() {
+      var maxSat = ($rootScope.availableBalance * config.unitToSatoshi).toFixed(0)
+         - bitcore.TransactionBuilder.FEE_PER_1000B_SAT;
+      $scope.amount = maxSat / config.unitToSatoshi;
+    };
   });
diff --git a/test/unit/controllers/controllersSpec.js b/test/unit/controllers/controllersSpec.js
index c183ebcf9..d56804be9 100644
--- a/test/unit/controllers/controllersSpec.js
+++ b/test/unit/controllers/controllersSpec.js
@@ -128,10 +128,12 @@ describe("Unit: Controllers", function() {
       );
       scope.model = {
         newaddress: null,
-        newlabel: null
+        newlabel: null,
       };
       $compile(element)(scope);
-      $controller('SendController', {$scope: scope});
+      $controller('SendController', {$scope: scope,
+        $modal: {},
+      });
       scope.$digest();
       form = scope.form;
     }));
@@ -244,6 +246,7 @@ describe("Unit: Controllers", function() {
     var sendCtrl;
     beforeEach(inject(function($controller, $rootScope) {
       scope = $rootScope.$new();
+      $rootScope.availableBalance = 123456;
       sendCtrl = $controller('SendController', {
         $scope: scope,
         $modal: {},
@@ -253,6 +256,10 @@ describe("Unit: Controllers", function() {
     it('should have a SendController', function() {
       expect(scope.isMobile).not.to.equal(null);
     });
+    it('should autotop balance correctly', function() {
+      scope.topAmount();
+      expect(scope.amount).to.equal(123356);
+    });
   });
 
 });