diff --git a/app/pages/admin/members/[id].vue b/app/pages/admin/members/[id].vue
index 9a0acad..824e264 100644
--- a/app/pages/admin/members/[id].vue
+++ b/app/pages/admin/members/[id].vue
@@ -56,6 +56,9 @@
               <div class="field">
                 <label>Contribution ($/mo)</label>
                 <input v-model.number="form.contributionAmount" type="number" min="0" step="1">
+                <p class="field-hint field-hint--warn">
+                  Writes to our database only. If the member is on a paid plan, also update <code>recurringAmount</code> in the Helcim dashboard — this form does not sync.
+                </p>
               </div>
               <div class="field">
                 <label>Status</label>
@@ -534,6 +537,24 @@ onMounted(loadActivity)
   margin-top: 12px;
 }
 
+.field-hint {
+  font-size: 11px;
+  color: var(--text-faint);
+  margin: 6px 0 0;
+  line-height: 1.4;
+}
+
+.field-hint--warn {
+  color: var(--ember);
+  border-left: 2px solid var(--ember);
+  padding: 4px 0 4px 8px;
+}
+
+.field-hint code {
+  font-family: "Commit Mono", monospace;
+  font-size: 10px;
+}
+
 .form-actions {
   display: flex;
   gap: 8px;