diff --git a/client/src/components/jobs-detail-rates/jobs-detail-rates.component.jsx b/client/src/components/jobs-detail-rates/jobs-detail-rates.component.jsx
index e077a2aa5..4ca035382 100644
--- a/client/src/components/jobs-detail-rates/jobs-detail-rates.component.jsx
+++ b/client/src/components/jobs-detail-rates/jobs-detail-rates.component.jsx
@@ -14,7 +14,8 @@ const mapStateToProps = createStructuredSelector({
   jobRO: selectJobReadOnly,
 });
 
-export function JobsDetailRates({ jobRO, form }) {
+export function JobsDetailRates({ jobRO, form, job }) {
+  console.log(form.getFieldsValue());
   const { t } = useTranslation();
   return (
     <div>
@@ -33,7 +34,13 @@ export function JobsDetailRates({ jobRO, form }) {
             label={t("jobs.fields.ca_customer_gst")}
             name="ca_customer_gst"
           >
-            <CurrencyInput disabled={jobRO} />
+            <CurrencyInput
+              disabled={jobRO}
+              max={
+                ((job.job_totals && job.job_totals.totals.federal_tax.amount) ||
+                  0) / 100
+              }
+            />
           </Form.Item>
         </Tooltip>
         <Form.Item