Update the IOF tax and estimated dollar amounts

index.html

@@ -107,10 +107,13 @@ <h1 style="font-size:4vw">Calculadora de Taxas de Competição</h1>
     <script>
 
       function calcularWCA(valorInscricao) {
-        if ((valorInscricao * 0.15) > 2.36) {
-          var valorWCA = valorInscricao * 0.15 * 1.0538
+        if ((valorInscricao * 0.15) > 2.78) {
+          <!-- 2.78 is an estimation of US$0.45 (the minimum WCA due amount for Brazil)
+            in BRL as of 3 January 2025 -->
+          var valorWCA = valorInscricao * 0.15 * 1.0338
+          <!-- 3.38% represent the amount of the IOF tax, which will be gradually phased out until 2028 -->
         } else {
-          var valorWCA = 2.36 * 1.0538
+          var valorWCA = 2.78 * 1.0338
         }
         return valorWCA
       }