Common Mistakes in ITR Filing – And How to Fix Them
Common Mistakes in ITR Filing – And How to Fix Them Why Getting Your ITR Right in 2026 Matters More Than Ever Every year, millions of Indian taxpayers — salaried employees, freelancers, business owners, professionals, and HUFs — file their Income Tax Returns (ITRs). While the Income Tax Department has made the process increasingly digital and user-friendly through its revamped e-filing portal (incometax.gov.in), a significant number of returns still contain errors. These mistakes — whether minor clerical slip-ups or major structural errors — can cost taxpayers thousands to lakhs of rupees in penalties, interest, and tax demand notices. In AY 2026-27 (FY 2025-26), the due date for filing ITR for individuals is July 31, 2026. However, filing correctly matters just as much as filing on time. With the Income Tax Department’s advanced AI-driven scrutiny system (Project Insight) cross-referencing data from banks, employers, mutual funds, GST, property registrars, and foreign remittances, errors are caught faster than ever before. This comprehensive blog — brought to you by the CleverCoins expert team — covers every common mistake taxpayers make while filing their ITR, why each mistake is problematic under the Income Tax Act, 1961, and exactly how to fix it. Whether you are filing for the first time or are a seasoned filer, this guide will help you file a clean, compliant, penalty-free return in 2026. Quick Snapshot — AY 2026-27 Key Dates & Thresholds Basic Exemption Limit (New Tax Regime — Default): Rs. 3,00,000 (Rs. 3 Lakh) Basic Exemption Limit (Old Tax Regime): Rs. 2,50,000 (Rs. 2.5 Lakh); Rs. 3 Lakh for senior citizens (60-80 yrs); Rs. 5 Lakh for super senior citizens (80+ yrs) Standard Deduction (Salaried — New Regime): Rs. 75,000 | (Old Regime): Rs. 50,000 Rebate u/s 87A (New Regime): Up to Rs. 60,000 — for income up to Rs. 12,00,000 Rebate u/s 87A (Old Regime): Up to Rs. 12,500 — for income up to Rs. 5,00,000 Due Date — ITR Filing for Individuals / HUF (non-audit): July 31, 2026 Due Date — ITR Filing for Audit cases: October 31, 2026 Penalty for Late Filing u/s 234F: Rs. 5,000 (Rs. 1,000 if total income is below Rs. 5 Lakh) The 20 Most Common ITR Filing Mistakes — And How to Fix Them MISTAKE #1: Choosing the Wrong ITR Form ❌ The Common Mistake ✅ How to Fix It Filing ITR-1 when you have capital gains, two house properties, or foreign income. Filing ITR-4 (Sugam) when turnover exceeds Rs. 3 crore (presumptive limit) or you opt out of presumptive taxation. Filing ITR-2 when you have business income. Match your income sources to the correct form: ITR-1 (Sahaj): Salaried, one house property, other sources — income up to Rs. 50 lakh. ITR-2: Salaried + capital gains / multiple properties / foreign income. ITR-3: Business / profession income (non-presumptive). ITR-4 (Sugam): Presumptive income u/s 44AD / 44ADA / 44AE — turnover limit Rs. 3 crore (for business) & Rs. 75 lakh (for professionals) in AY 2026-27. Use the ITD’s ‘Help Me Decide’ tool on incometax.gov.in. MISTAKE #2: Not Reporting All Sources of Income ❌ The Common Mistake ✅ How to Fix It Forgetting to report interest income from savings accounts, FDs, post office schemes, and PPF interest. Not declaring rental income from a second property. Missing freelance or part-time income paid in cash. Not reporting dividends received from shares and mutual funds (taxable since FY 2020-21). Download Form 26AS and AIS (Annual Information Statement) from the e-filing portal — they reflect all income reported by deductors. Report savings bank interest under ‘Income from Other Sources’ — deduction u/s 80TTA up to Rs. 10,000 is available. Declare all rental income; claim 30% standard deduction u/s 24(a) and municipal taxes paid. Dividends above Rs. 5,000 from a single company attract TDS @ 10% — report all dividends regardless of amount. MISTAKE #3: Mismatch with Form 26AS / AIS / TIS ❌ The Common Mistake ✅ How to Fix It Reporting different income figures than what appears in Form 26AS (TDS data) or AIS (broader income data). This is one of the most common triggers for IT scrutiny notices u/s 143(1)(a). Always download AIS and TIS (Taxpayer Information Summary) from incometax.gov.in before filing. Reconcile every TDS entry in Form 26AS with your salary slips, Form 16, bank statements. If AIS shows incorrect information, submit feedback directly on the portal to correct it. Any mismatch that remains must be explained in the ITR or rectified via Revised Return. MISTAKE #4: Not Declaring Foreign Assets & Income ❌ The Common Mistake ✅ How to Fix It NRIs filing as Residents failing to disclose foreign bank accounts, overseas investments, or foreign property. Residents not disclosing ESOP income from foreign companies or foreign dividends. Missing Schedule FA (Foreign Assets) and Schedule FSI (Foreign Source Income) in ITR-2/3. Schedule FA in ITR-2/3 must be filled by Resident and Ordinarily Resident (ROR) taxpayers for all foreign assets. Foreign income must be reported even if taxes are paid abroad — claim Double Tax Avoidance Agreement (DTAA) credit via Schedule TR. Penalty for non-disclosure of foreign assets under Black Money Act, 2015: Up to Rs. 10 lakh per asset + prosecution. Determine your residential status carefully: RNOR status has partial disclosure obligations. MISTAKE #5: Incorrectly Claiming Deductions Under Chapter VI-A ❌ The Common Mistake ✅ How to Fix It Claiming Section 80C deduction of Rs. 1.5 lakh but not having supporting investments. Claiming 80D (Health Insurance) for parents not dependent on the taxpayer. Claiming 80G donations for cash donations above Rs. 2,000 (not allowed from FY 2017-18 onwards). Claiming 80C deductions under the New Tax Regime (not available — frequently confused). Under the New Tax Regime (default from AY 2024-25 onwards), most Chapter VI-A deductions (80C, 80D, 80G, etc.) are NOT available — only 80CCD(2) (employer NPS contribution) is allowed. Under Old Tax Regime: Ensure all investments/payments are made and receipts documented before ITR filing. 80G deduction: Always donate via cheque/UPI/bank transfer and collect a receipt with the NGO’s 80G registration number.
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