diff --git a/README.md b/README.md
index fe9bc4f..5149ff2 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@
 
 Este proyecto está en continuo desarrollo, contratar un esquema de soporte,
 nos ayuda a continuar su desarrollo. Ponte en contacto con nosotros para
-contratar: administracion@empresalibre.net
+contratar: administracion ARROBA empresalibre.net
 
 
 ### Requerimientos:
diff --git a/source/app/controllers/main.py b/source/app/controllers/main.py
index 18ce108..e3c3924 100644
--- a/source/app/controllers/main.py
+++ b/source/app/controllers/main.py
@@ -71,6 +71,13 @@ class AppValues(object):
         req.context['result'] = self._db.get_values(table, values)
         resp.status = falcon.HTTP_200
 
+    def on_delete(self, req, resp, table):
+        values = req.params
+        if self._db.delete(table, values['id']):
+            resp.status = falcon.HTTP_200
+        else:
+            resp.status = falcon.HTTP_204
+
     def on_post(self, req, resp, table):
         file_object = req.get_param('upload')
         if file_object is None:
@@ -84,6 +91,8 @@ class AppValues(object):
                 req.context['result'] = self._db.enviar_prefac(values)
             elif table == 'addunidad':
                 req.context['result'] = self._db.add_unidad(values)
+            elif table == 'addimpuesto':
+                req.context['result'] = self._db.add_impuesto(values)
             else:
                 req.context['result'] = self._db.validate_cert(values, session)
         else:
diff --git a/source/app/controllers/util.py b/source/app/controllers/util.py
index d8b4898..f1fb86d 100644
--- a/source/app/controllers/util.py
+++ b/source/app/controllers/util.py
@@ -36,7 +36,7 @@ from dateutil import parser
 from .helper import CaseInsensitiveDict, NumLet, SendMail, TemplateInvoice
 from settings import DEBUG, log, template_lookup, COMPANIES, DB_SAT, \
     PATH_XSLT, PATH_XSLTPROC, PATH_OPENSSL, PATH_TEMPLATES, PATH_MEDIA, PRE, \
-    PATH_XMLSEC, TEMPLATE_CANCEL
+    PATH_XMLSEC, TEMPLATE_CANCEL, IMPUESTOS
 
 
 #~ def _get_hash(password):
diff --git a/source/app/models/db.py b/source/app/models/db.py
index f526a94..c0b498b 100644
--- a/source/app/models/db.py
+++ b/source/app/models/db.py
@@ -85,6 +85,9 @@ class StorageEngine(object):
     def add_unidad(self, values):
         return main.SATUnidades.add(values)
 
+    def add_impuesto(self, values):
+        return main.SATImpuestos.add(values)
+
     def _get_taxes(self, values):
         return main.SATImpuestos.get_activos()
 
@@ -153,6 +156,8 @@ class StorageEngine(object):
             return main.Folios.remove(id)
         if table == 'preinvoice':
             return main.PreFacturas.remove(id)
+        if table == 'satimpuesto':
+            return main.SATImpuestos.remove(id)
         return False
 
     def _get_client(self, values):
diff --git a/source/app/models/main.py b/source/app/models/main.py
index ec9e0b5..b304403 100644
--- a/source/app/models/main.py
+++ b/source/app/models/main.py
@@ -15,7 +15,7 @@ if __name__ == '__main__':
 
 from controllers import util
 from settings import log, VERSION, PATH_CP, COMPANIES, PRE, CURRENT_CFDI, \
-    INIT_VALUES, DEFAULT_PASSWORD, DECIMALES
+    INIT_VALUES, DEFAULT_PASSWORD, DECIMALES, IMPUESTOS
 
 
 FORMAT = '{0:.2f}'
@@ -740,9 +740,43 @@ class SATImpuestos(BaseModel):
             (('key', 'factor', 'tipo', 'tasa'), True),
         )
 
+    @classmethod
+    def add(self, values):
+        tasa = float(values['tasa'])
+        tipo = 'T'
+        if tasa < 0:
+            tipo: 'R'
+
+        row = {
+            'key': IMPUESTOS.get(values['impuesto']),
+            'name': values['impuesto'],
+            'tipo': tipo,
+            'tasa': abs(tasa),
+        }
+        try:
+            obj = SATImpuestos.create(**row)
+            row['id'] = obj.id
+            row['delete'] = '-'
+            return {'ok': True, 'row': row}
+        except IntegrityError:
+            return {'ok': False, 'msg': 'El impuesto ya existe'}
+
+    @classmethod
+    def remove(cls, id):
+        with database_proxy.transaction():
+            q = SATImpuestos.delete().where(SATImpuestos.id==id)
+            return bool(q.execute())
+
     @classmethod
     def get_(self):
-        rows = SATImpuestos.select().dicts()
+        rows = (SATImpuestos.select(
+            SATImpuestos.id,
+            SQL(" '-' AS delete"),
+            SATImpuestos.name,
+            SATImpuestos.tipo,
+            SATImpuestos.tasa)
+            .dicts()
+        )
         return tuple(rows)
 
     @classmethod
diff --git a/source/app/settings.py b/source/app/settings.py
index a2e008d..c670fb1 100644
--- a/source/app/settings.py
+++ b/source/app/settings.py
@@ -93,3 +93,12 @@ PRE = {
 CURRENT_CFDI = '3.3'
 DEFAULT_PASSWORD = 'blades3.3'
 DECIMALES = 2
+IMPUESTOS = {
+    'ISR': '001',
+    'IVA': '002',
+    'IEPS': '003',
+    'ISH': '000',
+    'INSPECCION DE OBRA': '000',
+    'ICIC': '000',
+    'CEDULAR': '000',
+}
diff --git a/source/static/js/controller/admin.js b/source/static/js/controller/admin.js
index b09f472..dfabde5 100644
--- a/source/static/js/controller/admin.js
+++ b/source/static/js/controller/admin.js
@@ -27,10 +27,12 @@ var controllers = {
         tb_sat = $$('tab_sat').getTabbar()
         tb_sat.attachEvent('onChange', tab_sat_change)
         $$('grid_admin_taxes').attachEvent('onCheck', grid_admin_taxes_on_check)
+        $$('grid_admin_taxes').attachEvent('onItemClick', grid_admin_taxes_click)
         $$('grid_admin_monedas').attachEvent('onCheck', grid_admin_monedas_on_check)
         $$('grid_admin_bancos').attachEvent('onCheck', grid_admin_bancos_on_check)
         $$('grid_admin_unidades').attachEvent('onCheck', grid_admin_unidades_on_check)
         $$('grid_unidad_found').attachEvent('onValueSuggest', grid_unidad_found_click)
+        $$('cmd_agregar_impuesto').attachEvent('onItemClick', cmd_agregar_impuesto_click)
         //~ Opciones
         tb_options = $$('tab_options').getTabbar()
         tb_options.attachEvent('onChange', tab_options_change)
@@ -992,7 +994,7 @@ function agregar_nueva_unidad(obj){
 
     webix.ajax().post('/values/addunidad', values, {
         error: function(text, data, xhr) {
-            webix.message({type: 'error', text: 'Error al consultar'})
+            webix.message({type: 'error', text: 'Error al agregar'})
         },
         success: function(text, data, xhr){
             var values = data.json()
@@ -1005,8 +1007,6 @@ function agregar_nueva_unidad(obj){
 
 
 function grid_unidad_found_click(obj){
-
-
     msg = '¿Estás seguro de agregar la siguiente unidad?'
     msg += '(' + obj.key + ')<BR>'
     msg += obj.name
@@ -1025,3 +1025,103 @@ function grid_unidad_found_click(obj){
     })
     $$('buscar_nueva_unidad').setValue('')
 }
+
+
+function agregar_impuesto(impuesto, tasa){
+    var grid = $$('grid_admin_taxes')
+    var values = {impuesto: impuesto, tasa: tasa}
+
+    webix.ajax().post('/values/addimpuesto', values, {
+        error: function(text, data, xhr) {
+            webix.message({type: 'error', text: 'Error al agregar'})
+        },
+        success: function(text, data, xhr){
+            var values = data.json()
+            if (values.ok){
+                $$('lst_admin_impuestos').setValue('')
+                $$('txt_admin_tasa').setValue('')
+                grid.add(values.row)
+            }else{
+                msg_error(values.msg)
+            }
+        }
+    })
+}
+
+
+function cmd_agregar_impuesto_click(){
+    var impuesto = $$('lst_admin_impuestos').getValue().trim()
+    var tasa = $$('txt_admin_tasa').getValue().trim()
+
+    if(!impuesto){
+        msg = 'Selecciona un impuesto'
+        msg_error(msg)
+        return
+    }
+    if(!tasa){
+        msg = 'Captura una tasa'
+        msg_error(msg)
+        return
+    }
+    if(!isFinite(tasa)){
+        msg = 'La tasa debe ser un número'
+        msg_error(msg)
+        return
+    }
+
+    tasa = parseFloat(tasa)
+    if(tasa >= 1){
+        msg = 'La tasa debe ser menor a uno'
+        msg_error(msg)
+        return
+    }
+
+    msg = 'Datos correctos.<BR><BR>¿Estás seguro de agregar este impuesto?'
+    webix.confirm({
+        title: 'Agregar impuesto',
+        ok: 'Si',
+        cancel: 'No',
+        type: 'confirm-error',
+        text: msg,
+        callback:function(result){
+            if(result){
+                agregar_impuesto(impuesto, tasa)
+            }
+        }
+    })
+}
+
+
+function borrar_impuesto(row){
+    var grid = $$('grid_admin_taxes')
+
+    webix.ajax().del('/values/satimpuesto', {id: row}, function(text, xml, xhr){
+        var msg = 'Impuesto eliminado correctamente'
+        if(xhr.status == 200){
+            grid.remove(row)
+            msg_sucess(msg)
+        }
+    })
+}
+
+
+function grid_admin_taxes_click(id, e, node){
+    if(id.column != 'delete'){
+        return
+    }
+
+    msg = '¿Estás seguro de borrar el impuesto seleccionado?'
+    webix.confirm({
+        title: 'Borrar impuesto',
+        ok: 'Si',
+        cancel: 'No',
+        type: 'confirm-error',
+        text: msg,
+        callback:function(result){
+            if(result){
+                borrar_impuesto(id.row)
+            }
+        }
+    })
+
+}
diff --git a/source/static/js/ui/admin.js b/source/static/js/ui/admin.js
index da7ab85..d4461cd 100644
--- a/source/static/js/ui/admin.js
+++ b/source/static/js/ui/admin.js
@@ -21,7 +21,7 @@ var sidebar_admin = {
         onAfterSelect: function(id){
             $$('multi_admin').setValue(id)
         }
-    }
+    },
 }
 
 
@@ -154,7 +154,7 @@ var grid_emisor_cuentas_banco = {
     adjust: true,
     autoheight: true,
     headermenu: true,
-    columns: grid_emisor_cuentas_banco_cols
+    columns: grid_emisor_cuentas_banco_cols,
 }
 
 
@@ -239,7 +239,7 @@ var form_emisor = {
         rules: {
             emisor_nombre: function(value){return value.trim() != ''},
         }
-    }]
+    }],
 }
 
 
@@ -266,7 +266,7 @@ var grid_folios = {
     select: 'row',
     adjust: true,
     headermenu: true,
-    columns: grid_folios_cols
+    columns: grid_folios_cols,
 }
 
 
@@ -384,7 +384,7 @@ var form_folios = {
             folio_serie: function(value){return value.trim() != ''},
             folio_inicio: function(value){return value > 0},
         }
-    }]
+    }],
 }
 
 
@@ -400,7 +400,7 @@ var form_correo = {
             labelAlign: 'right'
         },
         autoheight: true
-    }]
+    }],
 }
 
 
@@ -434,13 +434,14 @@ var tab_options = {
         {id: 'Plantillas', rows: options_templates},
         {id: 'Otros', rows: [{}]},
         {},
-    ]
+    ],
 }
 
 
 var grid_admin_taxes_cols = [
     {id: 'id', header: 'ID', hidden: true},
-    {id: 'name', header: 'Nombre'},
+    {id: 'delete', header: '', width: 30, css: 'delete'},
+    {id: 'name', header: 'Nombre', adjust: 'data'},
     {id: 'tipo', header: 'Tipo'},
     {id: 'tasa', header: 'Tasa'},
     {id: 'activo', header: 'Activo', template: '{common.checkbox()}',
@@ -490,7 +491,7 @@ var grid_admin_taxes = {
     autoheight: true,
     autowidth: true,
     headermenu: true,
-    columns: grid_admin_taxes_cols
+    columns: grid_admin_taxes_cols,
 }
 
 
@@ -503,7 +504,7 @@ var grid_admin_monedas = {
     autoheight: true,
     autowidth: true,
     headermenu: true,
-    columns: grid_admin_monedas_cols
+    columns: grid_admin_monedas_cols,
 }
 
 
@@ -516,7 +517,7 @@ var grid_admin_bancos = {
     autowidth: true,
     headermenu: true,
     footer: true,
-    columns: grid_admin_bancos_cols
+    columns: grid_admin_bancos_cols,
 }
 
 
@@ -530,15 +531,28 @@ var grid_admin_unidades = {
     autoheight: true,
     headermenu: true,
     footer: true,
-    columns: grid_admin_unidades_cols
+    columns: grid_admin_unidades_cols,
 }
 
 
+var admin_sat_impuestos = {cols: [{maxWidth: 15},
+    {view: 'richselect', id: 'lst_admin_impuestos', label: 'Impuesto', options:
+        ['ISR', 'IVA', 'IEPS', 'ISH', 'INSPECCION DE OBRA', 'ICIC', 'CEDULAR'],
+        labelAlign: 'right', required: true},
+    {view: 'text', id: 'txt_admin_tasa', label: 'Tasa', labelAlign: 'right',
+        required: true},
+    {view: 'button', id: 'cmd_agregar_impuesto', label: 'Agregar',
+        autowidth: true, type: 'iconButton', icon: 'plus'},
+{}],}
+
+
 var msg_tax = 'Activa los impuestos que uses. El predeterminado se muestra primero'
 var sat_impuestos = [
     {maxHeight: 20},
     {cols: [{maxWidth: 15}, {view: 'label', label: msg_tax}, {}]},
     {maxHeight: 20},
+    {cols: [{maxWidth: 15}, admin_sat_impuestos]},
+    {maxHeight: 20},
     {cols: [{maxWidth: 15}, grid_admin_taxes, {}]},
 {}]
 
@@ -584,7 +598,7 @@ var suggest_sat_unidad = {
                 this.hide()
             }
         }
-    }
+    },
 }
 
 
@@ -626,7 +640,7 @@ var tab_sat = {
         {id: 'Monedas', rows: sat_monedas},
         {id: 'Bancos', rows: sat_bancos},
         {id: 'Unidades', rows: sat_unidades},
-    ]
+    ],
 }
 
 
@@ -643,7 +657,7 @@ var app_emisor = {
             {}]
         },
         {},
-    ]
+    ],
 }
 
 
@@ -654,7 +668,7 @@ var app_folios = {
             template: 'Folios'},
         form_folios,
         {},
-    ]
+    ],
 }
 
 
@@ -665,7 +679,7 @@ var app_correo = {
             template: 'Configuración de correo'},
         form_correo,
         {},
-    ]
+    ],
 }
 
 
@@ -675,7 +689,7 @@ var app_sat = {
         {view: 'template', id: 'th_sat', type: 'header',
             template: 'Catálogos del SAT'},
         tab_sat,
-    ]
+    ],
 }
 
 
@@ -685,7 +699,7 @@ var app_options = {
         {view: 'template', id: 'th_options', type: 'header',
             template: 'Opciones'},
         tab_options,
-    ]
+    ],
 }
 
 
@@ -703,7 +717,7 @@ var multi_admin = {
         app_correo,
         app_sat,
         app_options,
-    ]
+    ],
 }
 
 
@@ -717,7 +731,7 @@ var menu_user = {
     ],
     type: {
         subsign: true,
-    }
+    },
 }
 
 
@@ -742,7 +756,7 @@ var ui_admin = {
             ]
         }
     ]
-};
+}
 
 
 
diff --git a/source/static/js/ui/invoices.js b/source/static/js/ui/invoices.js
index b99c319..d2c3d82 100644
--- a/source/static/js/ui/invoices.js
+++ b/source/static/js/ui/invoices.js
@@ -582,7 +582,7 @@ var app_invoices = {
     rows:[
         {view: "template", id: "th_invoices", type: "header", template:"Administración de Facturas" },
         multi_invoices
-    ]
+    ],
 }