Income Tax Notice Under Section 143(1): What It Means, Why It Comes & What to Do – 2026 Guide
Income Tax Notice Under Section 143(1): What It Means, Why It Comes & What to Do – 2026 Guide
Every year, shortly after the July 31 ITR filing deadline, my phone starts getting messages with the same screenshot: an email subject line reading “Intimation under Section 143(1)” and a message below the screenshot asking some version of “Is this bad? What did I do wrong?” The panic is understandable — “notice” is a word that makes most people immediately assume the worst.
In the majority of cases, nothing is wrong. A Section 143(1) intimation is the Income Tax Department’s automated acknowledgement that your return has been processed — and in perhaps 60–70% of cases, it says exactly what you hoped: no demand, no refund difference, your return matches the department’s computation. The rest do involve adjustments — but even those are typically straightforward to resolve. This guide covers the complete picture: what each type of 143(1) intimation means, why they are triggered, and exactly what to do in each case.
💡 The Single Most Important Distinction: Section 143(1) is an intimation — an automated processing communication. Section 143(2) is a scrutiny notice — a formal, AO-driven examination of your return. These are completely different in severity and implication. Most people worry about the wrong one. 143(1) is routine. 143(2) requires a CA.
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What Section 143(1) Is — The Legal Framework
Section 143(1) is a preliminary processing provision under the Income Tax Act 1961. After you file your ITR, the Centralised Processing Centre (CPC) in Bengaluru runs automated checks on your return — arithmetic verification, TDS matching with Form 26AS, income matching with AIS, and deduction limit checks. The result of this processing is communicated as an “intimation” under Section 143(1).
| Aspect | Detail |
|---|---|
| Who issues it | CPC Bengaluru — automated processing, not a human Assessing Officer |
| When it comes | Typically 2–3 months after ITR filing; can take up to 9 months |
| How it is sent | Email to registered address + Income Tax portal Inbox |
| Format | Password-protected PDF |
| PDF password | PAN in lowercase + Date of Birth in DDMMYYYY format Example: PAN ABCDE1234F, DOB 15 March 1985 → password: abcde1234f15031985 |
| Response deadline | 30 days from the date of intimation — specified in the notice |
| ITA 2025 equivalent | Section 271 (from Tax Year 2026-27) |
Where to Find It on the Portal: incometax.gov.in → Login → e-File → Income Tax Returns → View Filed Returns → Click the relevant AY → look for “Intimation u/s 143(1)” link. Alternatively: Login → Inbox → filter by “143(1).” If you have not received the email — check your spam folder and verify that your registered email on the portal is current.
Three Types of 143(1) Outcomes
Type 1 — No Demand, No Refund (or Refund Confirmed)
The intimation says: “No demand, No refund” or “Refund of ₹X has been determined.” This is the most common outcome. It means your ITR passed all automated checks and matches the department’s computation. If a refund was due, it is confirmed and will credit to your pre-validated bank account.
What to do: Nothing. Read it, save it, move on. If a refund was determined — it will arrive within a few days to a few weeks in your bank account.
Type 2 — Tax Demand Raised
The intimation says: “Tax/Interest/Penalty payable of ₹X.” The CPC has made an adjustment to your return and is raising a demand for the difference. This requires action within 30 days — either pay the demand or dispute it.
What to do: Read the intimation carefully to understand why the adjustment was made. Then decide: is the adjustment correct (pay) or incorrect (dispute with evidence). Details in the action steps below.
Type 3 — Refund Reduced
You expected ₹20,000 refund but the intimation shows only ₹9,500. The CPC made an adjustment that reduced your refund. Same approach as Type 2 — understand the adjustment, then agree or dispute.
What to do: Compare your ITR with the intimation’s computation. Identify the adjustment. If correct — accept. If incorrect — dispute within 30 days.
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7 Common Reasons Why 143(1) Adjustments Are Raised
1. TDS Mismatch — Form 26AS vs ITR
The most common trigger. You claimed ₹50,000 TDS in your ITR, but Form 26AS shows only ₹45,000 — because your employer deposited the remaining ₹5,000 late. The CPC adjusts your return to the Form 26AS figure and reduces your refund (or raises a demand) by the difference.
This is not always your error — employer-side late TDS deposit is a frequent cause. The solution: contact your employer, request a TDS correction on TRACES, wait for Form 26AS to update, then dispute the 143(1) adjustment with evidence.
2. Income in AIS Not Declared in ITR
Your bank reported ₹14,000 in savings account interest in AIS. Your ITR showed ₹0 under Other Sources. The CPC adds ₹14,000 to your income and raises the demand for tax on it. This is the second most common cause — and entirely avoidable by checking AIS before filing.
Similar situations: dividend income reported by the company but not in your ITR, mutual fund redemption proceeds in AIS but no capital gains declared, rental income from a sub-registrar report not included.
3. Deduction Limit Exceeded
You claimed ₹1,80,000 under Section 80C. The limit is ₹1,50,000. The CPC automatically disallows the ₹30,000 excess and recalculates tax on the higher taxable income. Common in cases where a taxpayer combines EPF, PPF, LIC, and ELSS without tracking the combined total against the cap.
Also: claiming Section 80D health insurance at ₹30,000 when your age means the limit is ₹25,000 (limit is ₹50,000 only for senior citizens).
4. Section 87A Rebate — LTCG/STCG Trap
Section 87A rebate in the New Regime (up to ₹60,000) applies only to income taxed at normal slab rates. It does not apply to Long-Term Capital Gains (12.5%) or Short-Term Capital Gains (20%) on equity. If you claimed 87A on income that included LTCG or STCG — the CPC disallows the rebate portion attributable to these gains and raises a demand.
This is a significant and growing source of 143(1) demands as more retail investors file returns with both salary income and equity gains. Verify 87A eligibility carefully if your return includes any capital gains.
5. Late Filing Fee Under Section 234F
You filed after July 31. The late filing fee — ₹1,000 for income up to ₹5 lakh, ₹5,000 above ₹5 lakh — applies automatically. If you did not include it in your self-assessment at the time of filing, the CPC adds it and raises the shortfall as a demand. Small amounts — but ignoring them means interest starts accumulating.
6. Interest Under Sections 234A / 234B / 234C
234A: interest for late ITR filing. 234B: interest for advance tax shortfall (paid less than 90% of assessed tax). 234C: interest for advance tax instalments paid late or short. If you did not correctly compute and include these in your self-assessment, the CPC calculates them and adds the shortfall to the demand.
7. Arithmetic Errors in ITR
Manual entry errors — a wrong total in a schedule, income entered in the wrong field, a deduction double-entered — are automatically corrected by the CPC. The corrected computation may produce a different tax figure from what you calculated, resulting in a demand or a refund difference.
How to Read the 143(1) Intimation
Open the PDF (password: PAN lowercase + DDMMYYYY DOB). The intimation shows a comparison table with three columns:
| Column | What It Shows |
|---|---|
| As returned by taxpayer | What you declared in your ITR — your figures |
| As computed under Section 143(1) | What the CPC computed after its checks — department’s figures |
| Difference | The gap — this is the basis of any demand or refund adjustment |
Work through each row where the “Difference” column is non-zero. Each non-zero difference corresponds to one of the adjustment reasons above. Understanding which row has the difference tells you exactly what the CPC adjusted — and lets you decide whether to agree or dispute.
✅ The Only Three Questions to Answer After Reading:
1. What did the CPC change? (Which row in the comparison table has a difference?)
2. Is the CPC’s figure correct? (Check your AIS, Form 26AS, and investment records)
3. Based on the answer to Q2: pay or dispute?
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Step-by-Step Response — Pay or Dispute
- 1Open the Intimation — Note the Deadline
Download the PDF from the portal Inbox or email. Open with the password (PAN lowercase + DOB). Note the response deadline — it is specified in the intimation and is typically 30 days from the intimation date. Set a calendar reminder for 5 days before the deadline.
⚠️ Revised ITR Deadline for AY 2026-27: A revised ITR under Section 139(5) can be filed until December 31, 2026 for AY 2026-27. This is the standard deadline — December 31 of the assessment year. Plan accordingly if the 143(1) intimation reveals an error in your return that requires revision.
Decision Table — When to Pay vs When to Dispute
| Situation | Action | Why |
|---|---|---|
| Demand is for income you genuinely did not declare | Pay — after filing revised ITR if appropriate | Obligation is correct — closing it cleanly prevents interest accumulation |
| TDS mismatch — you claimed correctly but employer deposited late | Dispute — after getting employer to correct TRACES filing | The credit is legitimately yours — employer’s procedural failure should not cost you |
| 87A rebate disallowed on LTCG/STCG | Accept — rebate genuinely not available on these gains | Law is clear — 87A does not apply to special rate income |
| Income attributed to you that belongs to someone else | Submit AIS feedback → Dispute in e-Proceedings | AIS data is incorrect — fix the source, then dispute |
| Deduction disallowed — limit exceeded | Accept the disallowance — pay the demand | CPC is correct — you cannot claim above the statutory limit |
| 234F late fee added — you filed late | Pay — the fee is statutory | Filing after July 31 triggers this automatically — no grounds to dispute |
| Demand is ₹100 or below | Pay — even if small | Clears the outstanding demand from your profile permanently |
| Demand is large (₹50,000+) — reason unclear | CA consultation before responding | A wrong response can complicate the matter further |
Real Cases — Three Outcomes
Case 1 — TDS Mismatch — Employer’s Late Deposit
Rohit filed his ITR claiming ₹45,000 TDS based on his Form 16. His Form 26AS showed only ₹41,000 because his employer had deposited ₹4,000 in Q4 TDS one day after the TRACES deadline — the deposit hit the next quarter. A 143(1) demand of ₹4,000 arrived.
Rohit contacted HR. The employer confirmed the deposit had been made and filed a TDS correction. Rohit waited for Form 26AS to update (about 2 weeks), then submitted a “Disagree” response in e-Proceedings with the corrected Form 26AS and a letter from the employer. The demand was dropped.
Lesson: TDS mismatch demands are often employer errors. Check with HR before paying.
Case 2 — AIS Income Not Declared — Accepted and Paid
Sunita, a freelancer, received a 143(1) demand for ₹2,210. The adjustment: ₹8,500 in savings account interest that her bank had reported in AIS but that she had not declared in Schedule OS. At her effective rate, the tax on ₹8,500 plus cess came to ₹2,210.
She checked her AIS — the ₹8,500 was correct and was indeed her interest. She agreed with the demand and paid ₹2,210 through the portal. Matter closed the same day. From the following year, she downloads her AIS every June before filing and cross-checks every entry.
Lesson: Small undeclared income is still detectable. Checking AIS before filing eliminates these notices entirely.
Case 3 — 87A Rebate Disallowed on LTCG — Accepted
Ajay, a senior manager, had ₹18L salary and ₹2.8L LTCG from listed shares. He had claimed the full Section 87A rebate in New Regime — treating his entire taxable income (net ₹11.25L after standard deduction) as eligible for the rebate. A 143(1) demand arrived for ₹29,120 — the 87A rebate attributed to the LTCG portion had been disallowed.
The CPC’s position is well-established: 87A rebate in New Regime applies only to income taxed at slab rates. LTCG on listed equity is taxed at 12.5% — a special rate — and does not qualify for 87A. Ajay’s CA confirmed the position and advised him to pay the demand. He paid ₹29,120.
Lesson: If your return includes LTCG or STCG, calculate 87A eligibility only on the slab-rate portion of your income — not the full taxable income.
🔗 Why Income Tax Notices Come — Complete Guide 2026
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143(1) vs Other Notices — The Severity Scale
| Section | Type | Severity | What It Means | CA Needed? |
|---|---|---|---|---|
| 143(1) | Intimation — automated | 🟡 Low–Moderate | Arithmetic / AIS match — routine processing | Only for large or unclear demands |
| 139(9) | Defective Return | 🟡 Low | Error in return structure — respond in 15 days | Helpful but optional |
| 143(2) | Scrutiny Notice | 🟠 High | Detailed assessment — AO-driven examination | ✅ Yes |
| 142(1) | Information Request | 🟠 Moderate–High | Documents requested before assessment | ✅ Recommended |
| 148A | Pre-Reassessment | 🔴 High | Show cause before reopening prior year | ✅ Yes |
| 148 | Reassessment | 🔴 Very High | Prior year income alleged to have escaped | ✅ Essential |
| 270A | Penalty Notice | 🔴 Very High | Under/mis-reporting penalty proposed | ✅ Essential |
Common Mistakes
Ignoring the intimation:
Even a ₹500 demand left unpaid attracts interest at 1% per month under Section 220(2) and shows as an outstanding demand against your PAN — affecting future refunds. More significantly, an ignored intimation can eventually lead to recovery proceedings. There is no “too small to matter” — pay or dispute every demand within 30 days.
Paying without checking whether the adjustment is correct:
Reflex payment without reading the intimation is the other extreme. If the CPC made an error — a TDS figure pulled from a stale Form 26AS before a correction posted, or an income attributed to the wrong PAN — and you pay it, recovering that money is significantly harder than disputing it in the first place. Read before paying.
Filing a revised ITR without also responding in e-Proceedings:
A revised ITR and a 143(1) response are two separate actions on two separate portal pathways. Filing the revised ITR does not automatically close the outstanding 143(1) demand. You must also go to e-Proceedings and submit a response noting that a revised ITR has been filed. Without this, the original demand remains outstanding on the portal.
Confusing 143(1) with 143(2):
Several clients have called me in genuine distress about a 143(1) intimation — and the panic was entirely disproportionate because they thought it was a scrutiny notice. Know the difference. 143(1) is automated processing — millions of these are generated every year. 143(2) is an AO-driven examination — far less common, far more involved. If you are not sure which one you received: look for the section number in the subject line and in the body of the PDF.
Frequently Asked Questions
Q1. A 143(1) intimation came — does it mean my ITR is under scrutiny?
No. Section 143(1) is preliminary automated processing — every filed ITR receives a 143(1) intimation. Scrutiny is a separate process under Section 143(2), which is issued only to returns specifically selected for detailed examination. A 143(1) intimation, by itself, does not indicate scrutiny.
Q2. My demand is ₹110 — do I really need to pay it?
Yes. While the department rarely pursues very small demands aggressively, the demand remains outstanding on your portal record. It affects your compliance status and any future refund may be adjusted against it. Paying ₹110 takes two minutes on the portal and permanently closes the matter.
Q3. If I file a revised ITR, will the 143(1) demand automatically be cancelled?
Not immediately, and not automatically. The revised ITR goes into processing and the CPC will issue an updated 143(1) intimation once it is processed — which may take weeks to months. Meanwhile, the original demand remains outstanding. To bridge this gap, submit a 143(1) response in e-Proceedings noting that you have filed a revised ITR — this communicates the situation to the system and prevents further recovery action during the processing period.
Q4. Can a 143(1) demand lead to a bank account freeze?
Not directly or immediately. Bank account attachment (under Section 226(3)) is a recovery proceeding that follows a persistent, substantial unpaid demand — not a routine 143(1) demand. However, unpaid 143(1) demands accumulate interest, roll into larger demands, and if consistently ignored, can eventually reach the recovery stage. Pay or dispute every demand at the 143(1) stage — do not let it escalate.
Q5. The intimation says “no demand, no refund” but I expected a refund. What happened?
If the intimation says “no demand, no refund” but your computation showed a refund — the CPC’s automated check either found a discrepancy that eliminated the refund, or there is a reconciliation difference you need to investigate. Download your filed ITR and the intimation’s comparison table and identify where the difference is. Common cause: TDS claimed in ITR exceeds Form 26AS credit — the excess is disallowed, eliminating the refund.
Q6. Do I need a CA for every 143(1) response?
For simple cases — a small demand from undeclared FD interest, a TDS mismatch you can document — you can handle the response yourself using the e-Proceedings portal. For demands above ₹50,000, unclear adjustments, or situations involving capital gains or complex deductions — a CA consultation is worth it. The cost of one CA meeting is almost always less than the cost of a wrong response.
Conclusion
Section 143(1) is the most common income tax notice you will ever receive — and the least dramatic. In the majority of cases, it is a green light confirming your return has been processed. In the cases where it raises a demand, the resolution is almost always a clear either-or decision: the demand is correct (pay it) or the demand is wrong (dispute it with evidence). The process for both is straightforward and entirely online.
The mistake to avoid is treating a 143(1) intimation as either nothing (ignoring it) or as a catastrophe (panicking). It is a specific, actionable communication that requires a specific, timely response. Read it, understand the adjustment, act within 30 days. That is the entire job.
Related Guides
- Why Income Tax Notices Come Suddenly — Complete Guide 2026
- AIS Mismatch Notice — How to Reply Complete Guide 2026
- Income Tax Notice Guide — All Types Explained 2026
- ITR Filed But Refund Not Received — Complete Guide
- High Value Transactions in AIS — Complete Guide 2026
Written & Reviewed by: Vipin Goel
B.Com | 20+ Years Experience in Income Tax, GST & International Taxation
At TaxPremia.com, I write practical guides that help taxpayers handle real situations confidently. Section 143(1) intimations are the most frequent notice I am asked about — and the consistent message is: read it, understand it, act within 30 days. That resolves the vast majority of cases without any professional involvement beyond a CA consult for larger amounts.
For more practical tax updates visit: TaxPremia.com
Disclaimer: This article is for educational and informational purposes only. Tax rules, automated processing criteria, and deadlines are subject to change. Please consult a qualified Chartered Accountant before responding to any income tax demand or intimation involving significant amounts or complex tax situations.