diff --git a/src/pages/05_quotation/QuotationFormInfo.vue b/src/pages/05_quotation/QuotationFormInfo.vue
index a94990a9..51518d04 100644
--- a/src/pages/05_quotation/QuotationFormInfo.vue
+++ b/src/pages/05_quotation/QuotationFormInfo.vue
@@ -165,10 +165,13 @@ function installmentsDate(date: Date | string) {
       return pay;
     }
 
-    // Create a new Date object to avoid mutating the original one
     let updatedDate = new Date(firstPayDateObj);
     updatedDate.setMonth(updatedDate.getMonth() + index);
 
+    if (updatedDate.getDate() !== firstPayDateObj.getDate()) {
+      updatedDate.setDate(0);
+    }
+
     return {
       ...pay,
       date: updatedDate.toISOString(),