diff --git a/src/spaceone/cost_analysis/service/budget_service.py b/src/spaceone/cost_analysis/service/budget_service.py
index 6f3a49a0..d28cc3ab 100644
--- a/src/spaceone/cost_analysis/service/budget_service.py
+++ b/src/spaceone/cost_analysis/service/budget_service.py
@@ -79,7 +79,7 @@ def create(self, params):
         data_source_mgr: DataSourceManager = self.locator.get_manager('DataSourceManager')
         data_source_vo: DataSource = data_source_mgr.get_data_source(data_source_id, domain_id)
         data_source_metadata = data_source_vo.plugin_info.metadata
-        params['currency'] = data_source_metadata['currency']
+        params['currency'] = data_source_metadata.get('currency', 'USD')
 
         if time_unit == 'TOTAL':
             if limit is None: