diff --git a/web/default/src/features/system-settings/models/tiered-pricing-editor.tsx b/web/default/src/features/system-settings/models/tiered-pricing-editor.tsx
index 784e4d7b..a8ff27b4 100644
--- a/web/default/src/features/system-settings/models/tiered-pricing-editor.tsx
+++ b/web/default/src/features/system-settings/models/tiered-pricing-editor.tsx
@@ -523,7 +523,7 @@ function PriceField({ label, hint, value, onChange }: PriceFieldProps) {
       <Label className='text-muted-foreground text-xs'>{label}</Label>
       <DraftNumberInput
         min={0}
-        step={0.01}
+        step={0.000001}
         value={Number.isFinite(value) ? value : 0}
         onValueChange={onChange}
         className='h-8 w-full'
@@ -1277,7 +1277,7 @@ function RuleGroupCard({
         <Label className='text-xs'>{t('Multiplier')}</Label>
         <DraftNumberInput
           min={0}
-          step={0.01}
+          step={0.000001}
           value={group.multiplier}
           onValueChange={(value) =>
             onChange({ ...group, multiplier: String(value) })