diff --git a/conservancy_beancount/plugin/meta_tax_implication.py b/conservancy_beancount/plugin/meta_tax_implication.py
index 154fb101f3c7ade705601e99e3f8623a873e00df..7a2fe2b86938140d3ada608a63fb156495c6b0ce 100644
--- a/conservancy_beancount/plugin/meta_tax_implication.py
+++ b/conservancy_beancount/plugin/meta_tax_implication.py
@@ -45,7 +45,10 @@ class MetaTaxImplication(core._NormalizePostingMetadataHook):
     ])
 
     def __init__(self, config: configmod.Config) -> None:
-        self.payment_threshold = config.payment_threshold()
+        self.payment_threshold = -config.payment_threshold()
 
     def _run_on_post(self, txn: Transaction, post: data.Posting) -> bool:
-        return post.is_payment(self.payment_threshold) is not False
+        return (
+            post.account.is_cash_equivalent()
+            and post.units.number < self.payment_threshold
+        )