diff --git a/CHANGELOG.md b/CHANGELOG.md
index 04c22bf..c111d85 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+v 1.10.0 [10-jul-2018]
+----------------------
+    - Ahora se pueden manejar precios con cuatro decimales.
+
 v 1.9.3 [08-jul-2018]
 ---------------------
     - Fix: Al refacturar conceptos con descuento
diff --git a/VERSION b/VERSION
index 77fee73..81c871d 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.9.3
+1.10.0
diff --git a/source/app/models/main.py b/source/app/models/main.py
index 8d1468d..b182053 100644
--- a/source/app/models/main.py
+++ b/source/app/models/main.py
@@ -34,12 +34,13 @@ from controllers import util
 from settings import log, DEBUG, VERSION, PATH_CP, COMPANIES, PRE, CURRENT_CFDI, \
     INIT_VALUES, DEFAULT_PASSWORD, DECIMALES, IMPUESTOS, DEFAULT_SAT_PRODUCTO, \
     CANCEL_SIGNATURE, PUBLIC, DEFAULT_SERIE_TICKET, CURRENT_CFDI_NOMINA, \
-    DEFAULT_SAT_NOMINA, DECIMALES_TAX, TITLE_APP, MV
+    DEFAULT_SAT_NOMINA, DECIMALES_TAX, TITLE_APP, MV, DECIMALES_PRECIOS
 
 
 FORMAT = '{0:.2f}'
 FORMAT3 = '{0:.3f}'
 FORMAT_TAX = '{0:.4f}'
+FORMAT_PRECIO = '{0:.4f}'
 RFC_PUBLICO = 'XAXX010101000'
 
 
@@ -233,7 +234,12 @@ def config_main():
         'escuela': False,
         'nomina': nomina,
         'timbres': 0,
+        'decimales_precios': DECIMALES,
     }
+    dp = util.get_bool(Configuracion.get_('chk_config_decimales_precios'))
+    if dp:
+        data['decimales_precios'] = DECIMALES_PRECIOS
+
     if not obj is None:
         titulo = '{} - <b><font color="#610B0B">{}</font></b>'
         data['empresa'] = titulo.format(data['empresa'], obj.nombre)
@@ -352,6 +358,7 @@ class Configuracion(BaseModel):
                 'chk_config_price_with_taxes_in_invoice',
                 'chk_config_add_same_product',
                 'chk_config_tax_locales_truncate',
+                'chk_config_decimales_precios',
                 'chk_config_anticipo',
                 'chk_config_cuenta_predial',
                 'chk_config_codigo_barras',
@@ -3893,6 +3900,10 @@ class Facturas(BaseModel):
 
     def _make_xml(self, invoice, auth):
         tax_decimals = Configuracion.get_bool('chk_config_tax_decimals')
+        decimales_precios = Configuracion.get_bool('chk_config_decimales_precios')
+        frm_vu = FORMAT
+        if decimales_precios:
+            frm_vu = FORMAT_PRECIO
         tmp = 0
         emisor = Emisor.select()[0]
         certificado = Certificado.select()[0]
@@ -3970,7 +3981,7 @@ class Facturas(BaseModel):
                 'ClaveUnidad': row.unidad,
                 'Unidad': SATUnidades.get(SATUnidades.key==row.unidad).name[:20],
                 'Descripcion': row.descripcion,
-                'ValorUnitario': FORMAT.format(row.valor_unitario),
+                'ValorUnitario': frm_vu.format(row.valor_unitario),
                 'Importe': FORMAT.format(row.importe),
             }
             if row.descuento:
diff --git a/source/app/settings.py b/source/app/settings.py
index 4326b91..5ec59cc 100644
--- a/source/app/settings.py
+++ b/source/app/settings.py
@@ -31,7 +31,7 @@ except ImportError:
 
 
 DEBUG = DEBUG
-VERSION = '1.9.3'
+VERSION = '1.10.0'
 EMAIL_SUPPORT = ('soporte@empresalibre.net',)
 TITLE_APP = '{} v{}'.format(TITLE_APP, VERSION)
 
@@ -123,6 +123,7 @@ CURRENT_CFDI = '3.3'
 CURRENT_CFDI_NOMINA = '1.2'
 DECIMALES = 2
 DECIMALES_TAX = 4
+DECIMALES_PRECIOS = 4
 IMPUESTOS = {
     'ISR': '001',
     'IVA': '002',
diff --git a/source/static/js/controller/admin.js b/source/static/js/controller/admin.js
index 5870879..950ae41 100644
--- a/source/static/js/controller/admin.js
+++ b/source/static/js/controller/admin.js
@@ -66,6 +66,7 @@ var controllers = {
         $$('chk_config_price_with_taxes_in_invoice').attachEvent('onItemClick', chk_config_item_click)
         $$('chk_config_add_same_product').attachEvent('onItemClick', chk_config_item_click)
         $$('chk_config_tax_locales_truncate').attachEvent('onItemClick', chk_config_item_click)
+        $$('chk_config_decimales_precios').attachEvent('onItemClick', chk_config_item_click)
         $$('chk_config_anticipo').attachEvent('onItemClick', chk_config_item_click)
         $$('chk_config_ine').attachEvent('onItemClick', chk_config_item_click)
         $$('chk_config_edu').attachEvent('onItemClick', chk_config_item_click)
@@ -2133,4 +2134,4 @@ function grid_emisor_cuentas_banco_on_check(row, column, state){
         success: function(text, data, xhr) {
         }
     })
-}
\ No newline at end of file
+}
diff --git a/source/static/js/controller/invoices.js b/source/static/js/controller/invoices.js
index e9583ef..aa6a58a 100644
--- a/source/static/js/controller/invoices.js
+++ b/source/static/js/controller/invoices.js
@@ -176,6 +176,7 @@ function default_config(){
         cfg_invoice['with_taxes'] = values.cfdi_with_taxes
         cfg_invoice['add_same_product'] = values.cfdi_add_same_product
         cfg_invoice['tax_locales_truncate'] = values.cfdi_tax_locales_truncate
+        cfg_invoice['decimales_precios'] = get_config('decimales_precios')
         if(values.cfdi_show_pedimento){
             $$('grid_details').showColumn('pedimento')
         }
@@ -199,7 +200,7 @@ function price_without_taxes(price, id){
 
         var tasa = 1.00 + impuesto.tasa.to_float()
         if(impuesto.tipo == 'T' && impuesto.name == 'IVA'){
-            final_price = (price / tasa).round(DECIMALES)
+            final_price = (price / tasa).round(cfg_invoice['decimales_precios'])
         }
     }
     return final_price
@@ -1080,7 +1081,8 @@ function grid_details_before_edit_stop(state, editor){
         if(cfg_invoice['with_taxes']){
             var valor_unitario = price_without_taxes(parseFloat(state.value), row.id_product)
         }else{
-            var valor_unitario = parseFloat(state.value).round(DECIMALES)
+            //~ var valor_unitario = parseFloat(state.value).round(DECIMALES)
+            var valor_unitario = parseFloat(state.value).round(cfg_invoice['decimales_precios'])
         }
         grid.blockEvent()
         state.value = valor_unitario
@@ -1102,7 +1104,8 @@ function grid_details_before_edit_stop(state, editor){
             return true
         }
 
-        descuento = descuento.round(DECIMALES)
+        //~ descuento = descuento.round(DECIMALES)
+        descuento = descuento.round(cfg_invoice['decimales_precios'])
         var cantidad = parseFloat(row['cantidad'])
         var valor_unitario = parseFloat(row['valor_unitario'])
 
diff --git a/source/static/js/controller/main.js b/source/static/js/controller/main.js
index fbd93c4..004011f 100644
--- a/source/static/js/controller/main.js
+++ b/source/static/js/controller/main.js
@@ -36,6 +36,7 @@ function configuracion_inicial(){
 
         $$('cmd_update_timbres').define('badge', values.timbres)
         $$('cmd_update_timbres').refresh()
+        add_config({'key': 'decimales_precios', 'value': values.decimales_precios})
     })
 
 }
@@ -215,4 +216,4 @@ function cmd_update_timbres_click(){
         $$('cmd_update_timbres').define('badge', value)
         $$('cmd_update_timbres').refresh()
     })
-}
\ No newline at end of file
+}
diff --git a/source/static/js/controller/util.js b/source/static/js/controller/util.js
index aa7bd4d..7340349 100644
--- a/source/static/js/controller/util.js
+++ b/source/static/js/controller/util.js
@@ -3,6 +3,7 @@ var RFC_PUBLICO = "XAXX010101000";
 var RFC_EXTRANJERO = "XEXX010101000";
 var PAIS = "México";
 var DECIMALES = 2;
+//~ var DECIMALES_PU = 4;
 var DECIMALES_TAX = 4;
 var CLAVE_ANTICIPOS = '84111506';
 
@@ -137,6 +138,32 @@ function get_float(value){
 }
 
 
+var format_decimal_2 = webix.Number.numToStr({
+  groupSize: 3,
+  decimalSize: 2,
+  groupDelimiter: ",",
+  decimalDelimiter: "."
+})
+
+var format_decimal_4 = webix.Number.numToStr({
+  groupSize: 3,
+  decimalSize: 4,
+  groupDelimiter: ",",
+  decimalDelimiter: "."
+})
+
+
+function format_currency(value){
+    var fv = ''
+    if(get_config('decimales_precios') == 4){
+        fv = '$ ' + format_decimal_4(value)
+    }else{
+        fv = '$ ' + format_decimal_2(value)
+    }
+    return fv
+}
+
+
 webix.protoUI({
     $cssName: "text",
     name: "currency",
@@ -154,7 +181,8 @@ webix.protoUI({
     $setValue:function(value, raw){
         this.config.raw = value
         if(!raw){
-            value = webix.i18n.priceFormat(value)
+            //~ value = webix.i18n.priceFormat(value)
+            value = format_currency(value)
         }
         this.getInputNode().value = value
     }
diff --git a/source/static/js/ui/admin.js b/source/static/js/ui/admin.js
index 3f5cf20..248f6d2 100644
--- a/source/static/js/ui/admin.js
+++ b/source/static/js/ui/admin.js
@@ -605,6 +605,8 @@ var options_admin_otros = [
     {cols: [{maxWidth: 15},
         {view: 'checkbox', id: 'chk_config_tax_locales_truncate', labelWidth: 0,
             labelRight: 'Impuestos locales, truncar valores'},
+        {view: 'checkbox', id: 'chk_config_decimales_precios', labelWidth: 0,
+            labelRight: 'Precios con 4 decimales'}, {},
         ]},
     {maxHeight: 20},
     {template: 'Ayudas varias', type: 'section'},
diff --git a/source/static/js/ui/invoices.js b/source/static/js/ui/invoices.js
index 45cbc26..7fa628e 100644
--- a/source/static/js/ui/invoices.js
+++ b/source/static/js/ui/invoices.js
@@ -343,9 +343,9 @@ var grid_details_cols = [
     {id: 'cantidad', header: {text: 'Cantidad', css: 'center'}, width: 100,
         format: webix.i18n.numberFormat, css: 'right', editor: 'text'},
     {id: "valor_unitario", header:{text: 'Valor Unitario', css: 'center'},
-        width: 100, format: webix.i18n.priceFormat, css: 'right', editor: 'text'},
+        width: 100, format: format_currency, css: 'right', editor: 'text'},
     {id: 'descuento', header:{text: 'Descuento', css: 'center'},
-        width: 80, format: webix.i18n.priceFormat, css: 'right', editor: 'text'},
+        width: 80, format: format_currency, css: 'right', editor: 'text'},
     {id: 'precio_final', hidden: true, header: 'precio_final', width: 80,
         format: webix.i18n.priceFormat, css: 'right'},
     {id: "importe", header:{text: 'Importe', css: 'center'}, width: 150,
diff --git a/source/static/js/ui/products.js b/source/static/js/ui/products.js
index 4648665..3fdf5f1 100644
--- a/source/static/js/ui/products.js
+++ b/source/static/js/ui/products.js
@@ -24,7 +24,7 @@ var grid_products_cols = [
     { id: "unidad", header: ["Unidad", {content: "selectFilter"}], width: 150,
         sort:"string" },
     { id: "valor_unitario", header: ["Precio", {content: "numberFilter"}],
-        width: 150, sort: 'int', format: webix.i18n.priceFormat, css: "right" },
+        width: 150, sort: 'int', format: format_currency, css: "right" },
     { id: 'existencia', header: ['Existencia', {content: 'numberFilter'}],
         width: 100, sort: 'int', format: webix.i18n.numberFormat,
         hidden: true, css: 'right' },
@@ -250,4 +250,4 @@ var win_import_products = {
         $$('cmd_upload_products').attachEvent('onItemClick', cmd_upload_products_click)
         $$('up_products').attachEvent('onUploadComplete', up_products_upload_complete)
     }
-}
\ No newline at end of file
+}