diff --git a/pos_payment_method_cashdro_rounding/__init__.py b/pos_payment_method_cashdro_rounding/__init__.py
new file mode 100644
index 0000000..9f3f569
--- /dev/null
+++ b/pos_payment_method_cashdro_rounding/__init__.py
@@ -0,0 +1,2 @@
+# Copyright Criptomart
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
diff --git a/pos_payment_method_cashdro_rounding/__manifest__.py b/pos_payment_method_cashdro_rounding/__manifest__.py
new file mode 100644
index 0000000..a16b1e3
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+++ b/pos_payment_method_cashdro_rounding/__manifest__.py
@@ -0,0 +1,18 @@
+{
+    "name": "POS CashDro Rounding",
+    "version": "18.0.1.0.0",
+    "summary": "Apply cash/currency rounding to CashDro payment request amount.",
+    "category": "Point of Sale",
+    "license": "AGPL-3",
+    "author": "Criptomart",
+    "depends": [
+        "point_of_sale",
+        "pos_payment_method_cashdro",
+    ],
+    "assets": {
+        "point_of_sale._assets_pos": [
+            "pos_payment_method_cashdro_rounding/static/src/js/cashdro_rounding.esm.js",
+        ],
+    },
+    "installable": True,
+}
diff --git a/pos_payment_method_cashdro_rounding/static/src/js/cashdro_rounding.esm.js b/pos_payment_method_cashdro_rounding/static/src/js/cashdro_rounding.esm.js
new file mode 100644
index 0000000..eb01842
--- /dev/null
+++ b/pos_payment_method_cashdro_rounding/static/src/js/cashdro_rounding.esm.js
@@ -0,0 +1,37 @@
+/* Copyright Criptomart
+   License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+   Apply the PoS cash rounding to the amount requested to the CashDro, keeping
+   the OCA integration flow untouched.
+*/
+
+import { PaymentCashdro } from "@pos_payment_method_cashdro/js/payment_cashdro.esm";
+import { patch } from "@web/core/utils/patch";
+
+patch(PaymentCashdro.prototype, {
+    /**
+     * @override
+     * The base module asks the CashDro for the plain due amount, which ignores
+     * the cash rounding configured in the PoS. As the drawer can only give back
+     * change with the coins it holds, we request the amount the customer is
+     * really expected to pay: the due amount with the cash rounding applied,
+     * which is the very same amount core defaults a payment line to.
+     *
+     * Only the url builder is patched so the rest of the payment flow of the
+     * base module (request, acknowledge, polling and error handling) is kept.
+     */
+    _cashdro_payment_url(parameters) {
+        const order = this.pos.get_order();
+        const line = order.get_selected_paymentline();
+        if (!line || !order.shouldRound(line.payment_method_id)) {
+            return super._cashdro_payment_url(...arguments);
+        }
+        // CashDro treats decimals as positions in an integer, so we round the
+        // product to avoid the trailing decimals of the floating point
+        // computation or the drawer would reject our request.
+        const amount = Math.round(
+            order.getDefaultAmountDueToPayIn(line.payment_method_id) * 100
+        );
+        return super._cashdro_payment_url({ ...parameters, amount });
+    },
+});