diff --git a/nodeconductor/billing/backend/whmcs.py b/nodeconductor/billing/backend/whmcs.py
index <HASH>..<HASH> 100644
--- a/nodeconductor/billing/backend/whmcs.py
+++ b/nodeconductor/billing/backend/whmcs.py
@@ -487,6 +487,7 @@ class WHMCSAPI(object):
             type='server',
             paytype='recurring',
             module='autorelease',
+            proratabilling=True,
         )
 
         pid = response['pid']
Create whmcs products with pro-rata setting on

- ITACLOUD-<I>