diff --git a/facho/cli.py b/facho/cli.py
index 5bd3c8a..feaeda6 100644
--- a/facho/cli.py
+++ b/facho/cli.py
@@ -79,6 +79,7 @@ def generate_invoice(private_key, passphrase, scriptname):
     from facho import fe
 
     invoice = module.invoice()
+    invoice.calculate()
     xml = form.DIANInvoiceXML(invoice)
     
     extensions = module.extensions(invoice)