diff --git a/internal/handler/dukcapil_handler.go b/internal/handler/dukcapil_handler.go
index 2a1b5a4..e5d0347 100644
--- a/internal/handler/dukcapil_handler.go
+++ b/internal/handler/dukcapil_handler.go
@@ -29,8 +29,8 @@ func NewDukcapilHandler(dukcapilService DukcapilService, cfg *config.Config) *Du
 }
 
 // FaceMatch handles POST /api/v1/dukcapil/face-match (1:N face recognition).
-// Accepts only an image file via multipart form. All other parameters are
-// generated or retrieved from configuration.
+// Accepts an image file via multipart form and an optional threshold parameter.
+// If threshold is not provided, uses the default from configuration.
 func (h *DukcapilHandler) FaceMatch(c *gin.Context) {
 	// Parse multipart form
 	file, err := c.FormFile("image")
@@ -63,11 +63,17 @@ func (h *DukcapilHandler) FaceMatch(c *gin.Context) {
 	// Generate transaction_id (timestamp-based random ID)
 	transactionID := fmt.Sprintf("TXN%d", time.Now().UnixNano())
 
+	// Get threshold from form or use default from config
+	threshold := c.PostForm("threshold")
+	if threshold == "" {
+		threshold = h.config.Dukcapil.Threshold
+	}
+
 	// Build request with config values
 	req := &contract.FaceMatchRequest{
 		TransactionID:     transactionID,
 		TransactionSource: h.config.Dukcapil.TransactionSource,
-		Threshold:         h.config.Dukcapil.Threshold,
+		Threshold:         threshold,
 		Image:             imageBase64,
 		IP:                h.config.Dukcapil.DefaultIP,
 	}