Try this
Create New TaxCode
Create New Footer for Sales Invoice and paste this script
<script id="script-wrapper">
    document.addEventListener("DOMContentLoaded", processSubtotal);
    function processSubtotal() {
        // Cari semua sel di kolom pertama yang mungkin mengandung "Subtotal" atau "Sub-total"
        const subtotalCell = [...document.querySelectorAll("tbody td:first-child")]
            .find(td => ["subtotal", "sub-total"].includes(td.textContent.trim().toLowerCase()));
        if (!subtotalCell) return;
        // Ambil baris tempat Subtotal ditemukan
        const firstSubtotalRow = subtotalCell.closest("tr");
        const subtotalValueCell = firstSubtotalRow.querySelector("td[data-value]") || firstSubtotalRow.querySelector("td:last-child");
        if (!subtotalValueCell) return;
        // Ambil nilai Subtotal
        const rawValue = subtotalValueCell.dataset.value || subtotalValueCell.textContent.trim();
        const isIdLocale = /,\d{2}$/.test(rawValue);
        const isEnLocale = /\.\d{2}$/.test(rawValue);
        let subtotalValue = isIdLocale 
            ? parseFloat(rawValue.replace(/\./g, "").replace(",", ".")) 
            : parseFloat(rawValue.replace(/,/g, ""));
        if (isNaN(subtotalValue) || subtotalValue === 0) return;
        // Hitung DPP Nilai Lain
        let dppNilaiLain = Math.round((11 / 12) * subtotalValue * 100) / 100;
        // Hapus DPP Nilai Lain sebelumnya jika sudah ada
        const existingDppRow = [...document.querySelectorAll("tbody td:first-child")]
            .find(td => td.textContent.trim().toLowerCase() === "dpp nilai lain");
        if (existingDppRow) existingDppRow.closest("tr").remove();
        // Kloning baris Subtotal dan ubah menjadi DPP Nilai Lain
        const dppRow = firstSubtotalRow.cloneNode(true);
        const dppLabelCell = dppRow.querySelector("td[colspan]") || dppRow.querySelector("td:first-child");
        const dppValueCell = dppRow.querySelector("td[data-value]") || dppRow.querySelector("td:last-child");
        if (!dppLabelCell || !dppValueCell) return;
        dppLabelCell.textContent = "DPP Nilai Lain";
        const includeCurrencySymbol = subtotalValueCell.textContent.trim().includes("Rp");
        // Format angka sesuai locale
        const numberFormatter = new Intl.NumberFormat(isIdLocale ? "id-ID" : "en-US", {
            minimumFractionDigits: 2,
            maximumFractionDigits: 2
        });
        dppValueCell.textContent = includeCurrencySymbol
            ? `Rp ${numberFormatter.format(dppNilaiLain)}`
            : numberFormatter.format(dppNilaiLain);
        dppValueCell.setAttribute("data-value", dppNilaiLain.toFixed(2).replace(".", isIdLocale ? "," : "."));
        // Sisipkan baris setelah Subtotal pertama
        firstSubtotalRow.insertAdjacentElement("afterend", dppRow);
        // Hapus script setelah eksekusi
        document.getElementById("script-wrapper")?.remove();
    }
</script>
Add Footer to Sales Invoice
Result
Script Updated to support :
- Business data without Base Currency,
- Sales with Witolding Tax,
- Indonesian and English Language,
- en_US and id_ID Number Format,


