diff --git a/playbooks/roles/ecommerce/defaults/main.yml b/playbooks/roles/ecommerce/defaults/main.yml
index 0c6f3549fc6..665dae920bb 100644
--- a/playbooks/roles/ecommerce/defaults/main.yml
+++ b/playbooks/roles/ecommerce/defaults/main.yml
@@ -83,6 +83,7 @@ ECOMMERCE_SOCIAL_AUTH_REDIRECT_IS_HTTPS: false
 # Settings for affiliate cookie tracking
 ECOMMERCE_AFFILIATE_COOKIE_NAME: '{{ EDXAPP_AFFILIATE_COOKIE_NAME | default("dev_affiliate_id") }}'
 
+ECOMMERCE_OSCAR_DEFAULT_CURRENCY: 'USD'
 ECOMMERCE_OSCAR_FROM_EMAIL: 'oscar@example.com'
 
 # NOTE: The contents of the certificates should be set in private configuration
@@ -197,6 +198,7 @@ ECOMMERCE_USERNAME_REPLACEMENT_WORKER: "OVERRIDE THIS WITH A VALID USERNAME"
 ecommerce_service_config_overrides:
   LANGUAGE_COOKIE_NAME: '{{ ECOMMERCE_LANGUAGE_COOKIE_NAME }}'
   EDX_API_KEY: '{{ ECOMMERCE_EDX_API_KEY }}'
+  OSCAR_DEFAULT_CURRENCY: '{{ ECOMMERCE_OSCAR_DEFAULT_CURRENCY }}'
   OSCAR_FROM_EMAIL: '{{ ECOMMERCE_OSCAR_FROM_EMAIL }}'
 
   ENTERPRISE_SERVICE_URL: '{{ ECOMMERCE_ENTERPRISE_URL }}/enterprise/'