diff --git a/scripts/tricount_sum.jq b/scripts/tricount_sum.jq
new file mode 100644
index 0000000..24eba9f
--- /dev/null
+++ b/scripts/tricount_sum.jq
@@ -0,0 +1,6 @@
+.bills as $bills
+| [ $bills[].alloc[] ] | group_by(.ower.name)
+| [ .[] | .[0].ower.name as $ower
+        | { $ower: [ .[].amount, ($bills[] | select(.payed_by.name == $ower) | -.amount) ] | add }
+  ]
+| add