diff --git a/tests/testutil.py b/tests/testutil.py
index 01060048b347633db284e18db050ae8a22e4ce92..4e06dc439452ad95c31884f00dd47a4da18ed6be 100644
--- a/tests/testutil.py
+++ b/tests/testutil.py
@@ -144,10 +144,12 @@ class Transaction:
 
 
 class TestConfig:
-    def __init__(self,
+    def __init__(self, *,
+                 payment_threshold=0,
                  repo_path=None,
                  rt_client=None,
     ):
+        self._payment_threshold = Decimal(payment_threshold)
         self.repo_path = test_path(repo_path)
         self._rt_client = rt_client
         if rt_client is None:
@@ -155,6 +157,9 @@ class TestConfig:
         else:
             self._rt_wrapper = rtutil.RT(rt_client)
 
+    def payment_threshold(self):
+        return self._payment_threshold
+
     def repository_path(self):
         return self.repo_path