diff --git a/app/main/static/js/charges.js b/app/main/static/js/charges.js
index d0fb228..9df030a 100644
--- a/app/main/static/js/charges.js
+++ b/app/main/static/js/charges.js
@@ -1,3 +1,7 @@
+function roundToTwo(num) {
+    return +(Math.round(num + "e+2")  + "e-2");
+}
+
 function build_chart(div_selector, data_url, entity_name, category_type) {
 
     const main_elt = document.getElementById("main")
@@ -247,7 +251,7 @@ function build_chart(div_selector, data_url, entity_name, category_type) {
             var period_values = Object.values(d).slice(1)
             var row = {}
             row['period'] = d.period
-            row['total'] = d3.sum(period_values)
+            row['total'] = roundToTwo(d3.sum(period_values))
             periods_total_charge.push(row)
         });
 
@@ -310,6 +314,7 @@ function build_chart(div_selector, data_url, entity_name, category_type) {
                     } else {
                         categories_total_charge[k] = +d[k]
                     }
+                    categories_total_charge[k] = roundToTwo(categories_total_charge[k])
                 }
             )
         })
--
libgit2 0.21.2