Tax Audit: Top 10 Mistakes Taxpayers Make That Almost Guarantee Income Tax Notices And Scrutiny

Filing an Income Tax Return in India is not just about meeting a deadline - it's about accuracy, compliance, and transparency. But certain errors or aggressive claims tend to draw the attention of the Income Tax Department (ITD). Some of these can trigger scrutiny by the Income Tax Department. As per CA Shefali Mundra, Tax Expert at ClearTax, below are ten mistakes that often lead to trouble - and tips to stay safe.

1. Underreporting or Omitting Income

One of the most common triggers for scrutiny is failing to report all sources of income. Many taxpayers forget to include bank interest, dividends, rental income, freelance earnings, or capital gains from shares and mutual funds.

Since the Income Tax Department cross-checks returns with Form 26AS, AIS, and TIS, even small mismatches can raise red flags and lead to penalties. To avoid this, reconcile your return with these statements before filing.

2. Claiming Excessive or Unsupported Deductions

Taxpayers often overstate deductions under sections like 80C, 80D, or 80G, or inflate HRA and home loan interest claims. Deductions that appear disproportionate to your income almost always attract attention.

The department may ask for proof, and failing to produce valid receipts could lead to disallowances or penalties. Always keep investment proofs, donation receipts, and medical bills handy.

3. Poor Maintenance of Books and Records

For businesses and professionals above turnover or income thresholds, maintaining proper books of accounts is mandatory. Yet many fail to preserve invoices, vouchers, or ledgers.

During scrutiny, weak or missing records create doubts about the authenticity of your claims. Using accounting software, keeping digital copies of bills, and separating business from personal accounts can help you stay compliant.

4. Mismatch in TDS or Tax Credits

Discrepancies between the TDS you claim in your return and the figures in Form 26AS or AIS often lead to queries. Refunds may be withheld until mismatches are resolved. This usually happens when deductors make errors in filing or when taxpayers fail to check their TDS certificates.

The solution is simple: match your return with Form 26AS and AIS, and ask deductors to correct errors before filing.

5. Engaging in Large or Frequent Cash Transactions

Cash transactions continue to be heavily scrutinized by the ITD. Large cash deposits, withdrawals, or payments - especially when linked to property deals or business expenses - may trigger inquiries into the source of funds.

With India's push toward digital payments, excessive cash dealings can appear suspicious. Always try to route high-value transactions through banking channels and retain documentation for cash dealings above the threshold.

6. Showing Unexplained Swings in Income or Losses

Tax returns that show sudden spikes in deductions, drastic drops in profits, or consecutive years of losses often come under the scanner. The ITD may suspect manipulation to evade taxes.

While genuine reasons like market downturns or one-time expenses exist, they must be backed by proper documentation. Adding explanations in notes or maintaining multi-year data can help justify unusual trends.

7. Misusing the Presumptive Taxation Scheme

Sections 44AD and 44ADA allow small businesses and professionals to declare income on a presumptive basis, but misuse of these provisions is common. Taxpayers sometimes underreport receipts, claim extra expenses, or incorrectly switch in and out of the scheme.

Such practices can lead to a mandatory audit and penalties. If you opt for presumptive taxation, ensure you meet the eligibility criteria and follow the rules strictly.

8. Non-Transparent Related-Party Transactions

Deals with relatives, sister concerns, or associated companies attract close attention when not conducted at arm's length. Transferring loans, assets, or business income within the family without proper agreements can look like attempts to evade tax.

To stay safe, always document related-party transactions, maintain valuation reports, and justify the commercial purpose of the deal.

9. Missing Tax Audit Requirements or Filing Late

Businesses and professionals crossing turnover or income thresholds must get their accounts audited under Section 44AB. Missing this requirement or filing ITR before the audit report is uploaded often leads to penalties of up to Rs 1.5 lakh and scrutiny of your financials.

Similarly, late filing reduces your ability to carry forward losses and may draw unwanted attention. To avoid issues, track due dates, coordinate with your CA, and ensure audit reports are submitted on time.

10. Non-Disclosure of Foreign Assets and Income

Indian residents are required to disclose foreign assets such as overseas bank accounts, investments, immovable property, and any income earned abroad in their ITR (specifically in Schedule FA). Many taxpayers ignore or underreport these details, either due to a lack of awareness or in an attempt to avoid taxes.

This is a serious mistake that not only triggers scrutiny but also invites steep penalties and prosecution under the Black Money Act. Even if income is exempt abroad due to Double Taxation Avoidance Agreements (DTAAs), disclosure in India is mandatory. The safest approach is to declare all foreign holdings transparently and claim Foreign Tax Credit (FTC) where applicable.

Final Word

Tax scrutiny in India is increasingly data-driven, with the department using AI and analytics to flag unusual patterns, mismatches, and false claims. By reporting all income, claiming only genuine deductions, maintaining proper records, and meeting audit requirements, you can significantly reduce the risk of scrutiny. Compliance and transparency are the simplest ways to keep your tax profile clean.

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