diff --git a/modules/invoiceIn/front/tax/index.js b/modules/invoiceIn/front/tax/index.js
index 38e393176..26557c365 100644
--- a/modules/invoiceIn/front/tax/index.js
+++ b/modules/invoiceIn/front/tax/index.js
@@ -5,24 +5,11 @@ class Controller extends Section {
     constructor($element, $) {
         super($element, $);
     }
-    /*
-    get invoiceIn() {
-        return this._invoiceIn;
-    }
 
-    set invoiceIn(value) {
-        this._invoiceIn = value;
-        if (value) {
-            const filter = {
-                currency: this.invoiceIn.currency
-            }
-            this.$http.get(`ReferenceRates`, {filter})
-                .then(res => this.referenceRate = res.data);
-        }
-    }*/
     get setTaxRate() {
         return this._setTaxRate;
     }
+
     set setTaxRate(selection) {
         this._setTaxRate = selection;
         const taxTypeSage = this.$.taxTypeSage.selection;
@@ -32,13 +19,11 @@ class Controller extends Section {
     }
 
     add() {
-        const defaultExpenseFk = 6000000001;
-
         this.$.model.insert({
-            invoiceIn: this.$params.id,
-            expenseFk: defaultExpenseFk
+            invoiceIn: this.$params.id
         });
     }
+
     onSubmit() {
         this.$.watcher.check();
         this.$.model.save().then(() => {
diff --git a/modules/invoiceIn/front/tax/index.spec.js b/modules/invoiceIn/front/tax/index.spec.js
new file mode 100644
index 000000000..3780d91f1
--- /dev/null
+++ b/modules/invoiceIn/front/tax/index.spec.js
@@ -0,0 +1,61 @@
+import './index.js';
+import watcher from 'core/mocks/watcher';
+import crudModel from 'core/mocks/crud-model';
+
+describe('InvoiceIn', () => {
+    describe('Component tax', () => {
+        let controller;
+        let $scope;
+        let vnApp;
+
+        beforeEach(ngModule('invoiceIn'));
+
+        beforeEach(inject(($componentController, _$httpBackend_, $rootScope, _vnApp_) => {
+            vnApp = _vnApp_;
+            jest.spyOn(vnApp, 'showError');
+            $scope = $rootScope.$new();
+            $scope.model = crudModel;
+
+            $scope.watcher = watcher;
+            const $element = angular.element('<vn-invoice-in-tax></vn-invoice-in-tax>');
+            controller = $componentController('vnInvoiceInTax', {$element, $scope});
+            controller.invoiceIn = {id: 1};
+        }));
+
+        describe('setTaxRate() setter', () => {
+            it('should set tax rate with the Sage tax type value', () => {
+                const taxTypeSage = {
+                    rate: 21
+                };
+                $scope.taxTypeSage = {};
+                $scope.taxTypeSage.selection = taxTypeSage;
+
+                $scope.taxableBase = {};
+                $scope.taxableBase.value = 100;
+
+                controller.setTaxRate = 0;
+
+                expect(controller.taxRate).toEqual(21);
+            });
+        });
+
+        describe('onSubmit()', () => {
+            it('should make HTTP POST request to save tax values', () => {
+                controller.card = {reload: () => {}};
+                jest.spyOn($scope.watcher, 'check');
+                jest.spyOn($scope.watcher, 'notifySaved');
+                jest.spyOn($scope.watcher, 'updateOriginalData');
+                jest.spyOn(controller.card, 'reload');
+                jest.spyOn($scope.model, 'save');
+
+                controller.onSubmit();
+
+                expect($scope.model.save).toHaveBeenCalledWith();
+                expect($scope.watcher.updateOriginalData).toHaveBeenCalledWith();
+                expect($scope.watcher.check).toHaveBeenCalledWith();
+                expect($scope.watcher.notifySaved).toHaveBeenCalledWith();
+                expect(controller.card.reload).toHaveBeenCalledWith();
+            });
+        });
+    });
+});