Every year, around July, the same question does the rounds: should you file your income tax return yourself using the income tax portal, or should you get a professional to do it? With pre-filled forms, AIS/TIS data, and a much friendlier e-filing interface than a decade ago, self-filing has genuinely become easier. But “easier” and “right for your situation” are not the same thing. This article looks at both routes objectively, so you can decide which one suits your case.

How self-filing actually works today

The income tax portal now auto-populates a large part of your return using data from your Form 26AS, AIS (Annual Information Statement), and TIS (Taxpayer Information Summary). For someone with a single Form 16, no other income, and no investments beyond the standard deductions, the process can genuinely take fifteen to twenty minutes:

• Log in, select the correct ITR form (the portal often pre-selects it for you)
• Review pre-filled salary, TDS, and interest income
• Confirm deductions under Chapter VI-A if already reflected
• E-verify using Aadhaar OTP or net banking

For this category of taxpayer, software and the portal do a reasonable job. The forms are designed for exactly this use case, and government utilities (and several free or freemium private platforms) walk you through it step by step.

Where self-filing starts to strain

This is exactly where most people feel confident — the form is pre-filled, the portal walks you through it, and the whole thing can be wrapped up in minutes. That sense of speed is real, but it can be misleading, because the portal doesn’t tell you when a number is technically correct yet substantively wrong. The difficulty isn’t in the act of filing; it’s in the judgment calls that filing requires, and several of these calls don’t show up as errors until much later — as interest, penalties, or a reassessment.

• Choosing between the old and new tax regime. This isn’t a one-time choice anymore if you have business or professional income, and even for salaried individuals, the “better” regime depends on the exact mix of deductions, HRA, home loan interest, and 80C/80D investments. Picking the wrong one isn’t flagged by the portal — it simply calculates tax on whatever you select, and the cost only becomes visible when compared with the regime you should have picked.
• Capital gains from equity, mutual funds, or property. Grandfathering rules for shares bought before January 2018, indexation choices, set-off and carry-forward of losses, and scrip-wise reporting for listed securities are all judgment-heavy. AIS data is often incomplete or mismatched with broker statements, with no prompt from the portal to reconcile the two.
• Multiple income heads. Freelance or consulting income, rental income with co-ownership, foreign income or assets, and crypto/VDA transactions each carry their own reporting quirks. Missing a foreign asset disclosure alone can attract penalties under the Black Money Act that are wildly disproportionate to the value of the asset itself.
• Disclosure schedules for assets, liabilities, foreign assets, and directorships. Schedule AL, Schedule FA, and the directorship disclosure are easy to skip because they don’t feel like “tax” entries, yet omitting them can trigger scrutiny entirely separate from the income computation itself.
• Reconciling AIS/TIS data against your own records. The pre-filled statement frequently has duplicate or misattributed entries. Filing it as-is, without checking it against bank statements, broker contract notes, and Form 16, can quietly overstate or understate income — and the mismatch only surfaces as a notice weeks or months later.
• Choosing the correct ITR form. The portal’s suggested form isn’t always right once you have capital gains, foreign assets, or presumptive income. Filing on the wrong form can get the entire return marked defective under section 139(9), with a limited window to fix it.
• Set-off and carry-forward of losses. House property loss limits, ordering rules between short-term and long-term capital losses, and the fact that a return filed late under section 139(4) forfeits the right to carry forward most losses at all — permanently — are easy to get wrong without realising it.
• Residential status confusion. Whether you’re Resident, Resident but Not Ordinarily Resident (RNOR), or Non-Resident depends on the number of days spent in India over the current and preceding years, not on nationality, passport, or where your salary is paid — and the thresholds change depending on whether you’re an Indian citizen leaving for employment abroad, a citizen with high Indian income visiting India, or a foreign national. Getting this wrong has wide consequences: it changes which income is even taxable in India (global income for residents, only Indian-sourced income for non-residents), which ITR schedules apply, and whether DTAA relief or foreign tax credit claims are valid. The portal doesn’t compute residential status for you — it simply accepts whatever you select, and an incorrect selection here can understate income for years where global income was actually taxable, or claim relief that wasn’t due.
• Variation between online (pre-filled) and offline (actual) data. A March TDS entry not yet reflected, a broker’s capital gains statement differing from AIS, or interest reported on a different accounting basis can all mean the auto-populated numbers don’t match reality. Filing purely off the portal’s data without cross-verifying your own paperwork is one of the most common ways an otherwise “clean” filing turns into a defective or under-reported return.

None of this is visible at the moment of filing. The return goes through, the acknowledgment is generated, and everything looks fine — until a notice under section 143(1) or 139(9) arrives, or a mismatch triggers scrutiny, at which point what was a quick filing becomes a drawn-out correction involving interest under sections 234A/B/C, penalties, and in some cases reassessment. The speed of self-filing is genuine; what it doesn’t include is a check on whether the choices made along the way were the right ones.

A real example of how this plays out. A salaried professional sold listed equity shares held for less than a year, generating a short-term capital gain. Filing the return himself on the portal, he reported the entire amount under the long-term capital gains schedule by mistake — the AIS entry didn’t clearly distinguish holding period, and the portal’s pre-filled section grouped it in a way that made the error easy to miss. Short-term gains on listed equity were taxed at a 15% (now 20%) without the benefit of Rs. 100000 (now Rs 125000) available to long-term gains. The return processed without issue, the acknowledgment came through, and he assumed the filing was complete. Months later, a section 143(1) intimation arrived showing a tax demand several times larger than what he had actually computed, along with interest for the shortfall. Correcting it meant filing a rectification request, reconstructing the original contract notes and holding-period proof from his broker, and waiting through another processing cycle — all to fix a classification that would have taken a professional reviewing the trade statement a few minutes to catch the first time.

What a professional actually adds

The value of a chartered accountant or tax professional in this picture isn’t data entry — the portal does that. It’s in three areas:

1. Interpretation. Tax law has genuine ambiguity in places (what counts as a “transfer” for capital gains, whether a particular receipt is income or a capital receipt, how to treat ESOPs across vesting and exercise). A professional applies precedent and departmental practice that isn’t visible from the return form itself.
2. Planning, not just compliance. Filing in July is the last step of a process that ideally starts in April. Decisions about advance tax instalments, regime selection, timing of capital gains booking, and structuring of deductions are far more valuable made during the year than reconstructed at filing time.
3. Representation. If a notice does arrive, a professional who understands why a number was reported a certain way can respond accurately and on time. Self-filers without that context sometimes either ignore notices (which escalates the issue) or respond in ways that create new inconsistencies.

A reasonably honest comparison

Factor	Self-filing	Professional filing
Cost	Free to a few hundred rupees for software	Ranges from a modest flat fee to a percentage-based fee for complex cases
Time	15 minutes to a few hours, depending on complexity	Minimal time from you; turnaround depends on the professional
Best suited for	Single salary income, standard deductions, no capital gains or foreign assets	Multiple income heads, capital gains, business income, foreign assets, regime optimisation
Risk of error	Higher for non-standard cases; portal won’t catch judgment errors	Lower, but not zero — depends on the professional’s diligence
Audit/notice handling	You handle it yourself, often without context	Professional already understands the basis for each figure

 

A practical way to decide

Rather than treating this as an ideological choice, it helps to ask a few direct questions:

• Do you have more than one source of income, or any capital gains, business income, or foreign assets? If yes, the complexity alone justifies professional input, even if only for that year.
• Has your income or deduction structure changed materially this year — a new job, a property sale, a new investment? Changes are where most filing errors originate, because last year’s approach no longer applies cleanly.
• Is tax planning something you want to do proactively, or are you only thinking about it at filing time? If it’s the latter, a professional relationship that spans the year, not just the filing deadline, tends to produce better outcomes than either DIY or last-minute professional filing.

There’s no universally correct answer here. A salaried individual with a straightforward Form 16 and no other income may find self-filing perfectly adequate, year after year. Someone with equity portfolios, rental property, or freelance income is taking on real interpretive risk by filing alone, even if the portal makes the mechanical part feel simple. The right approach is the one that matches the actual complexity of your financial year, not the one that feels easiest to start.

BLOG BY: Mittal & Co.