pjpatil12/IncomeTaxSystem
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pjpatil12
2025-12-08 13:40:33 +05:30
parent bd24fa5f4e
commit 425f213606
13 changed files with 175 additions and 193 deletions
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83
static/js/itr_calc.js
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@@ -1,83 +1,72 @@
document.addEventListener("DOMContentLoaded", function () {
const fields = [
"gross_total_income", "disallowance_14a", "disallowance_37",
"deduction_80ia_business", "deduction_80ia_misc", "deduction_80ia_other",
"deduction_sec37_disallowance", "deduction_80g", "net_taxable_income",
"tax_30_percent", "tax_book_profit_18_5", "tax_payable", "surcharge_12",
"edu_cess_3", "total_tax_payable", "mat_credit", "interest_234c",
"total_tax", "advance_tax", "tds", "tcs", "tax_on_assessment", "refund"
];
function getValue(id) {
return parseFloat(document.getElementsByName(id)[0].value) || 0;
var el = document.getElementsByName(id)[0];
return el ? parseFloat(el.value) || 0 : 0;
}
function setValue(id, val) {
document.getElementsByName(id)[0].value = val.toFixed(2);
var el = document.getElementsByName(id)[0];
if (el) el.value = Number(val).toFixed(2);
}
function calculate() {
window.calculate = function () {
let gross_total_income = getValue("gross_total_income");
let disallowance_14a = getValue("disallowance_14a");
let disallowance_37 = getValue("disallowance_37");
// --- BASIC INPUTS ---
var gross_total_income = getValue("gross_total_income");
var disallowance_14a = getValue("disallowance_14a");
var disallowance_37 = getValue("disallowance_37");
// FORMULAS
// // Auto-calculations (your logic)
setValue("gross_total_income", disallowance_37 + gross_total_income);
setValue("disallowance_37", disallowance_14a + disallowance_37);
// Deductions
let d80_business = getValue("deduction_80ia_business");
let d80_misc = getValue("deduction_80ia_misc");
let d80_other = getValue("deduction_80ia_other");
// --- DEDUCTIONS ---
var d80_business = getValue("deduction_80ia_business");
var d80_misc = getValue("deduction_80ia_misc");
var d80_other = getValue("deduction_80ia_other");
let deduction_sec37 = d80_business + d80_misc + d80_other - 1.35;
var deduction_sec37 = d80_business + d80_misc + d80_other - 1.35;
setValue("deduction_sec37_disallowance", deduction_sec37);
let deduction_80g = getValue("deduction_80g");
var deduction_80g = getValue("deduction_80g");
// Net taxable income
let net_taxable_income = gross_total_income - deduction_sec37 - deduction_80g;
// --- NET TAXABLE INCOME ---
var net_taxable_income = gross_total_income - deduction_sec37 - deduction_80g;
setValue("net_taxable_income", net_taxable_income);
// Tax calculations
// --- TAX 30% ---
setValue("tax_30_percent", net_taxable_income * 0.30);
let tax_book_profit = getValue("tax_book_profit_18_5");
setValue("tax_payable", tax_book_profit);
// --- TAX PAYABLE (18.5%) ---
var tax_book = getValue("tax_book_profit_18_5");
setValue("tax_payable", tax_book);
let surcharge = tax_book_profit * 0.12;
var surcharge = tax_book * 0.12;
setValue("surcharge_12", surcharge);
let edu_cess = (tax_book_profit + surcharge) * 0.03;
var edu_cess = (tax_book + surcharge) * 0.03;
setValue("edu_cess_3", edu_cess);
let total_tax_payable = tax_book_profit + surcharge + edu_cess;
var total_tax_payable = tax_book + surcharge + edu_cess;
setValue("total_tax_payable", total_tax_payable);
let mat_credit = getValue("mat_credit");
let interest_234c = getValue("interest_234c");
// --- FINAL TAX ---
var mat_credit = getValue("mat_credit");
var interest_234c = getValue("interest_234c");
let total_tax = total_tax_payable + mat_credit + interest_234c;
var total_tax = total_tax_payable + mat_credit + interest_234c;
setValue("total_tax", total_tax);
// Assessment
let adv_tax = getValue("advance_tax");
let tds = getValue("tds");
let tcs = getValue("tcs");
// --- ASSESSMENT ---
var adv_tax = getValue("advance_tax");
var tds = getValue("tds");
var tcs = getValue("tcs");
let tax_on_assessment = adv_tax + tds + tcs;
var tax_on_assessment = adv_tax + tds + tcs;
setValue("tax_on_assessment", tax_on_assessment);
let refund = total_tax - tax_on_assessment;
var refund = total_tax - tax_on_assessment;
setValue("refund", refund);
}
// Attach event listeners
fields.forEach(id => {
const element = document.getElementsByName(id)[0];
if (element) {
element.addEventListener("input", calculate);
}
});
};
});