The Hidden Traps of DIY Income Tax Returns Filing
The Hidden Traps of DIY ITR Filing: Are You Making These Costly Mistakes?
Every year, once the Income Tax Return (ITR) filing season begins, I hear the same question:
"Why should I pay someone to file my ITR when I can do it myself?"
Honestly, I appreciate that mindset.
If your income consists only of salary, one bank account and a few deductions, filing your own ITR is absolutely possible.
The problem starts when your financial life becomes even slightly more complicated.
An Income Tax Return is not merely a form to be filled. It is a legal declaration of your income, investments, taxes paid and financial transactions. A small oversight may not only increase your tax liability but could also result in unnecessary notices, interest or penalties.
During the last few years, while working with nearly 200 families, I have come across several situations where people filed their own returns with complete confidence—but ended up paying much more than they should have.
Here are four real-life examples.
Case 1: Forgetting to Claim Property Tax
One of my clients owns rental properties.
They correctly reported the rental income and filed their return.
Everything looked perfect.
Except for one small detail.
They forgot to deduct the municipal property tax paid during the year.
What happened?
Property tax paid to the local authority is allowed as a deduction while calculating income from house property.
Since this deduction was missed, the taxable rental income became higher than it should have been.
The result?
The client paid approximately ₹10,000 more in tax, besides losing the benefit of the standard deduction available on the reduced rental income.
Takeaway
Sometimes the biggest tax saving doesn't come from finding a new deduction.
It comes from simply claiming the deductions that already exist.
Case 2: "It Didn't Auto-Populate"
This is probably the most common mistake I see today.
A taxpayer sold mutual funds or shares during the year.
They selected the correct ITR form.
However, since the Capital Gains schedule did not auto-populate, they assumed there was nothing to report.
So they filed the return without declaring the capital gains.
What happened?
Many taxpayers believe that whatever appears on the Income Tax Portal is the complete information available with the department.
That isn't true.
Auto-populated data is only a convenience feature.
Your broker, mutual fund company and depositories separately report transactions to the Income Tax Department, which are reflected in the AIS (Annual Information Statement).
If your AIS shows transactions that are missing from your ITR, the department may process the return accordingly or seek further clarification depending on the facts of the case.
Apart from paying the pending tax, interest may also become applicable.
Takeaway
Never assume that "not auto-populated" means "not reportable."
Always reconcile your ITR with your AIS and capital gains statements before filing.
Case 3: Form 16A Says Yes, Form 26AS Says No
One client received Form 16A showing TDS deducted on interest income.
However, when they checked Form 26AS, the TDS was missing.
To avoid complications, they decided not to claim the TDS credit.
Effectively, they paid tax twice.
What actually happened?
The deductor had deducted tax but had not yet correctly filed or updated the TDS return.
As a result, the credit was not appearing in Form 26AS.
If the taxpayer claims TDS that is not available in the tax records, the credit may be denied during processing until the deductor corrects the return.
Takeaway
Whenever Form 16A and Form 26AS do not match, don't ignore the issue.
Contact the deductor immediately and request correction before filing your return.
A little follow-up can save unnecessary tax payments.
Case 4: Foreign Shares and the ₹10 Lakh Surprise
This situation is increasingly common among professionals working in multinational companies.
Many employees receive ESOPs, RSUs or shares of their overseas parent company.
Since tax is often deducted by the employer, they assume everything has already been taken care of.
Unfortunately, that assumption can become expensive.
What happened?
Foreign shares are considered foreign assets.
Depending on the applicable reporting requirements, these assets generally need to be disclosed in the appropriate schedules of the Income Tax Return.
Many taxpayers unknowingly file ITR-1 even though they hold foreign assets, which is not appropriate in such cases.
Failure to disclose reportable foreign assets can attract significant consequences under the law, including substantial monetary penalties in applicable cases.
Takeaway
If you receive RSUs, ESOPs or hold shares of a foreign company, don't assume your return is straightforward.
Spend a few extra minutes understanding the reporting requirements—or seek professional advice.
The Real Cost of DIY
Filing your own ITR isn't wrong.
In fact, I encourage every taxpayer to understand the basics of taxation.
But there is an important difference between knowing how to submit a return and knowing what should be reported in that return.
Today's Income Tax Department receives information from multiple sources—banks, employers, brokers, mutual funds, registrars and other reporting entities.
The return is no longer prepared in isolation.
It is matched against the information already available with the department.
That is why a careful review before filing is often worth far more than the filing fee itself.
My Advice
If your income includes only salary and standard deductions, filing your own ITR may be perfectly adequate.
However, if your financial life includes:
Capital gains
Rental income
Multiple sources of income
TDS mismatches
Foreign assets such as RSUs or ESOPs
Business or professional income
then investing in a professional review can save far more than it costs.
After all, tax planning isn't about paying less tax through shortcuts.
It's about paying only what you legally owe—nothing more and nothing less.

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