Section 143(1) Intimation: Demand After Filing — Pay, Disagree, or Revise?
Received a tax demand in your 143(1) intimation? Learn what CPC processing means, why adjustments happen, and whether to pay, disagree, or file a revised return.
Harun Raaj
Chartered Accountant · Harun Raaj & Associates
Short answer: A Section 143(1) intimation is an automated summary from the Centralised Processing Centre (CPC) after your return is filed. It is not a scrutiny notice. If it shows a demand (tax payable), you generally have three paths: pay or agree if the adjustment is correct, disagree with reasons if CPC has made an error, or revise the return if you filed something wrong. Use the response window shown on the e-filing portal — do not assume a fixed number of days unless the portal displays one for your case.
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What Is a Section 143(1) Intimation?
When you e-file an income tax return, the Income Tax Department does not manually read every line on day one. Instead, CPC runs rule-based checks: arithmetic, TDS credit matching, interest computation, and obvious inconsistencies between what you claimed and what third-party data (Form 26AS, AIS, employer TDS, etc.) shows.
The outcome is communicated as an intimation under Section 143(1). Think of it as a machine-generated “processed return” statement:
- No change — processed income and tax match what you filed; no further action unless you spot your own error later.
- Refund — CPC calculates a lower tax liability than you paid; refund processing follows (subject to other adjustments such as outstanding demands).
- Demand — CPC calculates higher tax than you paid or admitted; you owe the difference (often with interest).
This is fundamentally different from:
A 143(1) demand does not mean you are automatically “under scrutiny.” It means the CPC’s system disagreed with your return on specific line items.
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Why Does CPC Raise a Demand? Common Adjustment Causes
Most 143(1) demands trace back to a handful of repeatable mismatches. Understanding the cause tells you which response path fits.
1. TDS / tax credit mismatch (Section 199, Form 26AS)
You claimed TDS credit in the return, but the amount does not appear (or appears differently) in Form 26AS or AIS. Common reasons:
- Deductor filed late or with a wrong PAN.
- Credit claimed for TDS not yet uploaded to 26AS for that assessment year.
- Mismatch between amount in return vs. certificate vs. 26AS.
Fix direction: If the TDS is genuinely yours, pursue deductor correction first; if your return overstated credit, revise or agree to the demand.
2. Arithmetic or structural errors in the return
Transposition errors, wrong slab computation, omitted income already visible in AIS, or inconsistent schedules frequently trigger auto-adjustments.
3. Interest under Sections 234A, 234B, 234C
CPC often adds:
- 234A — delay in filing the return.
- 234B — shortfall in advance tax.
- 234C — deferment of advance tax instalments.
Even when income tax is modest, interest lines can dominate a small demand.
4. Disallowed or impermissible claims apparent from the return itself
Where the return structure contradicts a claim, CPC may disallow it without a human assessing officer. Examples that show up repeatedly in defective-return patterns:
- Capital gains in ITR-1 beyond the permitted Section 112A window (up to ₹1,25,000 LTCG with no loss carry-forward, allowed from AY 2025-26).
- F&O or intraday trading filed under presumptive ITR-4 (not eligible for Section 44AD presumptive treatment).
- Foreign assets present but Schedule FA not filed in an appropriate form (ITR-2/3 required).
- Director status or unlisted equity reported in ITR-1 or ITR-4 when ITR-2 or ITR-3 is required.
- Business income without proper P&L particulars where ITR-3 is mandated.
If your demand stems from using the wrong ITR form, the underlying fix is usually a revised return in the correct form — not merely clicking “disagree.” Use the ITR form picker to confirm eligibility before revising.
5. Other portal-visible adjustments
CPC may also adjust based on information already on record: salary mismatches vs. Form 16, high-value transactions in AIS, or inconsistencies between schedules. The intimation letter and portal break-up list the specific adjustment codes — start there.
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Three Response Paths: Decision Tree
Received 143(1) intimation with DEMAND
│
▼
Read adjustment break-up on e-filing portal
│
├─► Demand is CORRECT (you agree CPC is right)
│ │
│ ├─► Pay balance tax (+ interest) via challan / Section 140A route
│ │ as directed on portal → mark Agree / No further action
│ │
│ └─► If you also need to correct the return record →
│ consider Revised Return u/s 139(5) [see ITA 2025 mapping
│ at harunraaj.com/ita-2025/section/139-5] alongside payment
│
├─► Demand is WRONG — CPC error, your return was right
│ │
│ ├─► Clerical / obvious CPC mistake →
│ │ Rectification u/s 154 (online request on portal)
│ │
│ └─► Substantive data issue but return figure was correct →
│ Disagree on 143(1) response + supporting docs;
│ rectification or appeal track as advised on portal
│
└─► YOU filed incorrectly — CPC applied rules to a flawed return
│
└─► Revised Return u/s 139(5) [ITA 2025: s.263]
in correct form + pay differential if any
Path A — Demand correct: pay and agree
When the intimation merely reflects reality (missed TDS, wrong deduction, interest due), the pragmatic route is:
- Verify the break-up line by line on the portal.
- Pay the outstanding amount through the challan mechanism indicated (typically linked to Section 140A self-assessment payment).
- Submit the portal response selecting agree or equivalent — follow the exact labels on your intimation workflow.
Paying does not always require giving up other remedies if you later discover a distinct error, but for a straightforward CPC adjustment you accept, payment closes the loop fastest.
Path B — Demand wrong: disagree, rectify, or appeal
Choose this when your filed return was correct and CPC’s system erred.
Use the response facility shown on the e-filing portal for the 143(1) intimation. The portal will display the applicable window and options for your case — treat that as authoritative rather than relying on informal day-count rules from third-party articles.
Path C — You filed wrong: revised return u/s 139(5)
When the demand exists because you chose the wrong form, omitted income, or overstated deductions:
- File a revised return under Section 139(5) within the statutory revised-return window.
- For the Finance Act 2025 / ITA 2025 consolidated numbering, the corresponding provision is Section 263 — see the mapping at harunraaj.com/ita-2025/section/139-5.
- Switch to the correct ITR (e.g., ITR-2 or ITR-3 instead of ITR-1 if you had capital gains, foreign assets, or director reporting).
A revised return replaces the processing base; CPC may issue a fresh 143(1) on the revision. Pay any additional liability proactively to reduce further interest accumulation.
Do not use rectification u/s 154 to introduce new claims or income sources — rectification is for mistakes apparent from record, not for belated disclosure of new facts.
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Pay, Disagree, or Revise? A Practical Filter
Ask these four questions in order:
- Is the intimation arithmetically consistent with my return and 26AS/AIS?
- Did I use the correct ITR form and schedules?
- Is the only issue interest (234A/B/C) on tax I already owe?
- Is the demand amount small relative to professional fees and time?
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When Paying a Small Demand Is the Rational Choice
Not every demand deserves a fight. A blunt cost-benefit frame:
Paying is not an admission of guilt in a criminal sense, but it is acquiescence to that intimation figure for processing purposes. If you pay while planning to dispute, understand the portal’s treatment of payments vs. open objections — when in doubt, disagree with reasons within the portal window and attach evidence rather than silent payment.
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143(1) Demand vs. Section 245 Refund Adjustment
These are often confused because both appear as “money owed” on the portal.
- 143(1) demand — additional tax determined on processing your return (income, TDS credit, interest).
- Section 245 adjustment — CPC proposes to set off a refund against an outstanding demand from an earlier year.
If your issue is “my refund was adjusted against old demand,” that is Section 245 mechanics — not a fresh 143(1) liability calculation. The CPC issues prior intimation proposing set-off; you respond within the window shown on the e-filing portal (commonly described as around 21 days in practice, but that period is portal practice rather than a fixed statutory headline number — the tool must phrase it exactly so). Options: demand correct → pay or agree; demand wrong → disagree with reasons (rectified, appealed, paid, stay granted, or wrong ID). No response → set-off proceeds as proposed. Interest under Section 244A continues on the balance refund.
Use the dedicated guide: /tools/refund-adjustment-245.
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Step-by-Step on the E-Filing Portal (Demand Intimation)
Exact menu labels change between utility versions, but the workflow is stable:
- Login → Pending Actions / e-Proceedings / Intimations.
- Open the 143(1) entry for the relevant assessment year.
- Download the computation PDF and the adjustment detail JSON/PDF if available.
- Reconcile each adjustment against your filed ITR, Form 26AS, AIS, and Form 16.
- Choose Agree, Disagree (with reason text), or initiate payment as applicable.
- If revising: file 139(5) revision first or in parallel per your CA’s advice, then respond to the original intimation as directed.
Keep screenshots, challan CSR numbers, and disagreement acknowledgements — they matter if processing stalls.
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Frequently Asked Questions
Is a 143(1) demand the same as a scrutiny notice?
No. Scrutiny is typically under Section 143(2) and involves detailed examination and evidence. Section 143(1) is automated processing.
Is there a fixed deadline to respond to a 143(1) demand?
Do not rely on a universal day count from blogs. Use the response window shown on the e-filing portal for your specific intimation. If no response is required for your case type, the portal will reflect that.
Can I pay first and dispute later?
Sometimes payment clears interest accumulation while a rectification is pending, but strategy depends on facts. For a clear CPC error on TDS credit, disagree with documentation rather than silent payment.
Should I file rectification u/s 154 or a revised return u/s 139(5)?
154 — mistake in CPC’s order or record, no new income disclosure.
139(5) — you need to correct your return (wrong form, omitted income, wrong deductions). See ITA 2025 s.263 mapping for revised returns.
What if I used ITR-1 but had F&O trading or foreign assets?
File in the correct form (typically ITR-2 or ITR-3) via revised return. These are among the top defect patterns: F&O in ITR-4 as presumptive, foreign assets without Schedule FA, director/unlisted shares in ITR-1/4.
My intimation shows refund but I received less — why?
Section 245 may have set off refund against an outstanding demand. Check /tools/refund-adjustment-245 and outstanding demand widgets on the portal.
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Key Takeaways
- A 143(1) intimation demand is CPC’s automated view that you owe more tax — not scrutiny.
- Match adjustments to cause: TDS/26AS, interest 234A/B/C, arithmetic, or impermissible form/claims.
- Correct demand → pay via portal / Section 140A and agree.
- CPC wrong → disagree + rectification u/s 154 where appropriate.
- You wrong → revised return u/s 139(5) (ITA 2025: s.263) and correct ITR via /tools/which-itr-form.
- For refund set-off issues, see /tools/refund-adjustment-245.
- Always anchor deadlines to the window shown on the e-filing portal.
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Last verified: 2026-08-05 · Reviewer: ICAI 238303 · Statute baseline: Section 139 ITA 1961 + Rule 12 IT Rules 1962 + CBDT ITR utility instructions AY 2026-27 (form-eligibility cross-checks). This article is general information, not tax advice. For your facts, consult a qualified professional before agreeing, paying, or revising.
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