84 lines
3.0 KiB
JavaScript
84 lines
3.0 KiB
JavaScript
document.addEventListener("DOMContentLoaded", function () {
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const fields = [
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"gross_total_income", "disallowance_14a", "disallowance_37",
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"deduction_80ia_business", "deduction_80ia_misc", "deduction_80ia_other",
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"deduction_sec37_disallowance", "deduction_80g", "net_taxable_income",
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"tax_30_percent", "tax_book_profit_18_5", "tax_payable", "surcharge_12",
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"edu_cess_3", "total_tax_payable", "mat_credit", "interest_234c",
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"total_tax", "advance_tax", "tds", "tcs", "tax_on_assessment", "refund"
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];
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function getValue(id) {
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return parseFloat(document.getElementsByName(id)[0].value) || 0;
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}
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function setValue(id, val) {
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document.getElementsByName(id)[0].value = val.toFixed(2);
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}
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function calculate() {
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let gross_total_income = getValue("gross_total_income");
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let disallowance_14a = getValue("disallowance_14a");
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let disallowance_37 = getValue("disallowance_37");
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// FORMULAS
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setValue("gross_total_income", disallowance_37 + gross_total_income);
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setValue("disallowance_37", disallowance_14a + disallowance_37);
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// Deductions
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let d80_business = getValue("deduction_80ia_business");
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let d80_misc = getValue("deduction_80ia_misc");
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let d80_other = getValue("deduction_80ia_other");
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let deduction_sec37 = d80_business + d80_misc + d80_other - 1.35;
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setValue("deduction_sec37_disallowance", deduction_sec37);
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let deduction_80g = getValue("deduction_80g");
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// Net taxable income
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let net_taxable_income = gross_total_income - deduction_sec37 - deduction_80g;
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setValue("net_taxable_income", net_taxable_income);
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// Tax calculations
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setValue("tax_30_percent", net_taxable_income * 0.30);
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let tax_book_profit = getValue("tax_book_profit_18_5");
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setValue("tax_payable", tax_book_profit);
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let surcharge = tax_book_profit * 0.12;
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setValue("surcharge_12", surcharge);
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let edu_cess = (tax_book_profit + surcharge) * 0.03;
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setValue("edu_cess_3", edu_cess);
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let total_tax_payable = tax_book_profit + surcharge + edu_cess;
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setValue("total_tax_payable", total_tax_payable);
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let mat_credit = getValue("mat_credit");
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let interest_234c = getValue("interest_234c");
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let total_tax = total_tax_payable + mat_credit + interest_234c;
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setValue("total_tax", total_tax);
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// Assessment
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let adv_tax = getValue("advance_tax");
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let tds = getValue("tds");
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let tcs = getValue("tcs");
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let tax_on_assessment = adv_tax + tds + tcs;
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setValue("tax_on_assessment", tax_on_assessment);
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let refund = total_tax - tax_on_assessment;
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setValue("refund", refund);
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}
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// Attach event listeners
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fields.forEach(id => {
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const element = document.getElementsByName(id)[0];
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if (element) {
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element.addEventListener("input", calculate);
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}
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});
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});
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