Self-Assessment Tax in Kannauj
Pay the right balance tax before you file. Our CA team computes your Section 140A liability after TDS, TCS and advance tax, adds 234A/234B/234C interest, generates the challan (minor head 300) and files a clean, non-defective return for AY 2026–27 — 100% online, with transparent pricing quoted upfront.
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Self-Assessment Tax in Kannauj
RoC Kanpur — 10/497, Khalasi Line, Kanpur – 208001
Allahabad High Court
09 (Uttar Pradesh)
Uttar Pradesh does not levy Professional Tax.
Perfume (Ittar) Cluster, Tobacco & Potato, Agri
Kannauj is India's perfume (ittar) capital — a traditional attar-distillation, tobacco, and potato hub.
What Is Self-Assessment Tax?
A quick, plain-language explanation before the details.
Self-assessment tax is the balance income tax you compute and pay yourself before filing your ITR, after adjusting TDS, TCS and advance tax already paid.
Under Section 140A of the Income-tax Act, before furnishing the return a taxpayer must pay any tax due — total tax minus TDS/TCS, advance tax and reliefs — together with interest under Sections 234A, 234B and 234C, and the return cannot be validly filed until this is paid.
Paid online via challan (now on the e-filing / e-Pay Tax portal, eportal.incometax.gov.in) under minor head 300 — Self-Assessment Tax, administered by the Income Tax Department.
An ITR filed with unpaid self-assessment tax is treated as defective under Section 139(9). Paying the balance under Section 140A first keeps the return valid.
Quick Facts
Is This Service Right for You?
Ideal for
- Any taxpayer whose TDS and advance tax fall short of the final liability
- Multiple income sources — salary plus interest, capital gains, freelance or rent
- Capital-gains earners — shares, mutual funds or property sold in FY 2025–26
- Business owners, consultants and 44AD/44ADA presumptive filers who under-paid advance tax
- Belated (139(4)) or revised (139(5)) filers with extra tax and 234A interest
- NRIs with Indian income where deducted tax is short of the actual liability
You may need this if
- Your TDS/TCS and advance tax do not fully cover the final tax due
- You sold shares, mutual funds or property with tax not deducted at source
- You missed or under-paid one or more advance-tax instalments
- Your bank deducted TDS at 10% but interest is taxed at your slab rate
- You are filing a belated or revised return with additional tax payable
- You want a clean, non-defective return that processes smoothly at CPC
Not sure if you need this?
Talk to an Expert →Why Self-Assessment Tax is Important
Paying the correct balance tax under Section 140A before filing keeps your return valid, stops interest from piling up and avoids demand notices. Here is why it matters.
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01
Avoid a Defective Return
An ITR filed with unpaid self-assessment tax is treated as defective under Section 139(9). Paying under Section 140A first keeps your return valid.
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02
Stop Interest Piling Up
Interest under 234A/234B/234C accrues monthly. Paying early minimises the balance you owe on filing.
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03
Correct Computation
Exact liability after TDS, TCS and advance tax — no overpayment, no shortfall, right regime chosen.
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04
Right Challan Details
Minor head 300 selected correctly; BSR code, date and CIN captured accurately for the ITR.
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05
Smooth Refund / Processing
A clean, tax-paid return processes faster at CPC and avoids demand notices under Section 143(1).
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06
Compliance Confidence
Filed in line with the Income-tax Act for AY 2026–27 — no last-minute surprises before the due date.
Simple, Transparent Pricing
Custom quote for your case
Fees depend on your business type and scope. Get a clear, itemised quote upfront — no hidden professional charges, government fee billed at actuals.
Who Can Apply?
Eligibility checklist
- A final tax liability that exceeds the TDS, TCS and advance tax already paid
- Form 26AS and AIS/TIS reconciled to confirm the credits available
- Interest under Sections 234A, 234B and 234C computed to the correct month
- The correct minor head 300 selected on the e-Pay Tax challan
- BSR code, date of deposit and CIN captured for entry in the ITR
- Payment made before the ITR is filed to keep the return non-defective
Everything You Need. One Professional Team.
Compute Liability
Total income and tax worked out under both the old and new regime for AY 2026–27.
Adjust Credits
Reconcile TDS, TCS and advance tax against Form 26AS and AIS/TIS.
Interest Working
Compute 234A / 234B / 234C interest to the exact month to arrive at the balance payable.
Regime Comparison
Compare old vs new regime and confirm the correct 87A rebate position.
Challan Generation
Generate the e-Pay Tax challan under the correct minor head 300.
Capture BSR / CIN
Record the BSR code, date of deposit and CIN for entry in the return.
Defective-Return Check
Verify the tax is paid so the return is not flagged under Section 139(9).
File & E-Verify
Enter the challan details in the ITR, file and complete e-verification.
What You’ll Receive
What You Need to Compute and Pay Your Balance Tax
Requirements are grouped by income/TDS, capital gains and payment/filing. Keep clear scans (PDF/JPG) ready — everything is collected securely online, and we reconcile your credits before computing the balance.
Income & TDS
Proof of income and tax paid- Form 16 / 16A (salary & TDS certificates)
- Form 26AS (tax credit statement)
- AIS / TIS (Annual Information Statement)
- Advance-tax challans already paid
- Interest certificates (savings, FD, bonds)
Capital Gains & Other
Where tax was not deducted- Capital gains statements (equity, MF, property)
- Property sale / purchase deeds
- Dividend and other income details
- Foreign income & asset details (NRIs)
- Details of any other taxable income
Payment & Filing
For the challan and the return- PAN and Aadhaar (linked)
- e-filing portal login for e-Pay Tax
- Pre-validated bank account for payment
- Prior-year ITR (for belated / revised cases)
- Any earlier challan (BSR code, date, CIN)
Reconcile 26AS and AIS first
Form 26AS shows TDS/TCS and taxes paid; the AIS/TIS reports interest, dividends, securities and property. Reconciling before computing prevents an over- or under-payment of balance tax.
Pay under minor head 300
Self-assessment tax must be paid under minor head 300 — not 100 (advance tax) or 400 (demand). A wrong head causes a tax-credit mismatch and can make the return defective.
Interest keeps running
234A/234B/234C interest accrues at 1% per month on unpaid tax. Computing and paying early minimises the balance you owe on filing.
Capture BSR, date & CIN
After payment, the BSR code, date of deposit and CIN from the challan must be entered in the ITR so the tax credit is matched correctly.
Don’t have all the documents?
We’ll identify what your case needs →How Self-Assessment Tax Works (Step by Step)
The entire process is 100% online through the income-tax e-filing portal, with status updates throughout.
Compute Liability
Total income and tax worked out under the old and new regime for AY 2026–27.
Adjust Credits
Reconcile TDS, TCS and advance tax against AIS and Form 26AS.
Add Interest
Compute 234A / 234B / 234C interest to arrive at the balance payable.
Pay Challan
Pay online under minor head 300 — capture BSR code, date and CIN.
Enter in Return
Challan details entered in the ITR and the defective-return check completed.
File & E-Verify
Return filed and e-verified so it is treated as valid.
Key Dates for Self-Assessment Tax (AY 2026–27)
| Stage | Expected Time |
|---|---|
| ITR due — non-audit individuals | 31 July 2026 |
| ITR due — audit cases | 31 October 2026 |
| Belated / revised return (with extra tax) | Up to 31 December 2026 |
Self-assessment tax under Section 140A must be paid before the return is filed — without it the return is treated as defective. Advance-tax instalments (15 Jun, 15 Sep, 15 Dec, 15 Mar) paid on time cut your self-assessment tax and 234B/234C interest.
Key Dates — At a Glance
| Frequency | What Is Due |
|---|---|
| Before Filing | Pay balance tax under minor head 300 · Capture BSR code, date & CIN · Enter challan details in the ITR |
| On Filing | Confirm the return is non-defective · File on the e-filing portal · E-verify within 30 days |
| Quarterly | Pay advance tax (15 Jun/Sep/Dec/Mar) · Track TDS credited in Form 26AS · Review AIS for new reported income |
| If Errors Found | File a belated / revised return by 31 Dec · Pay any additional tax with 234A interest · Consider an updated return (ITR-U) later |
Dates are indicative and may change with government notifications. Our team tracks every deadline so you never miss a filing.
Doing It Yourself vs TaxClue
Doing It Yourself
- Total your income and compute tax under both regimes yourself
- Reconcile TDS, TCS and advance tax against 26AS and AIS
- Compute 234A/234B/234C interest to the exact month
- Pick the correct minor head 300 on the challan
- Capture the BSR code, date and CIN correctly
- Enter the challan details accurately in the ITR
- Risk a defective-return notice under Section 139(9)
With TaxClue
- CA computes liability, old vs new regime compared
- TDS, TCS and advance tax reconciled with AIS & 26AS
- 234A/234B/234C interest computed to the exact month
- Correct minor head 300 selected every time
- BSR code, date and CIN verified before submission
- Challan details entered accurately in the return
- Defective-return risk checked and eliminated
Skip the guesswork.
Let an expert handle it →Common Mistakes That Delay Your Application
TaxClue reviews your documents before filing to reduce avoidable errors.
What to Keep in Mind After Paying
Before Filing
- Pay balance tax under minor head 300
- Capture BSR code, date & CIN
- Enter challan details in the ITR
On Filing
- Confirm the return is non-defective
- File on the e-filing portal
- E-verify within 30 days
Quarterly
- Pay advance tax (15 Jun/Sep/Dec/Mar)
- Track TDS credited in Form 26AS
- Review AIS for new reported income
If Errors Found
- File a belated / revised return by 31 Dec
- Pay any additional tax with 234A interest
- Consider an updated return (ITR-U) later
Penalties & Consequences
What is at stake if you do not comply
- Return treated as defective under Section 139(9) if the tax is unpaid
- Wrong challan head (100 or 400 instead of 300) causes a tax-credit mismatch
- 234A/234B/234C interest at 1% per month keeps running on unpaid tax
- Wrong BSR code, date or CIN breaks the tax-credit match in the ITR
- Demand notice under Section 143(1) if the balance is under-paid
Regulatory Updates 2025–26
- FY 2025-26: Under the default new regime, a resident individual pays nil tax up to ₹12 lakh total income via the enhanced Section 87A rebate; the standard deduction is ₹75,000.
- 2025: A belated or revised return for AY 2025-26 can be filed up to 31 December 2025 under Section 139(4)/(5).
Why Businesses Choose TaxClue
CA / CS Team
Qualified Chartered Accountants and Company Secretaries with deep tax expertise compute your balance tax.
End-to-End
From computation to e-verification — fully managed, with minimal effort from you.
Fast Turnaround
Committed timelines with proactive status updates. No delays, no excuses.
100% Online
Everything over WhatsApp / email — no office visits ever required.
Transparent Fees
Fixed pricing quoted upfront — ₹0 hidden professional charges.
Post-Filing Support
Guidance continues after payment, and notice handling is covered.
Your Documents Deserve Professional Care
- Documents handled by professionals under confidentiality
- Access limited to the team working on your file
- Communication over secure digital channels
- Documents retained only as long as needed for compliance
Frequently Asked Questions
What is self-assessment tax?
When must self-assessment tax be paid?
Under which challan head is self-assessment tax paid?
What happens if I file my ITR without paying self-assessment tax?
How is the interest under 234A, 234B and 234C calculated?
Is self-assessment tax the same as advance tax?
Do I owe self-assessment tax if my income is below the rebate limit?
What is the difference between minor head 100, 300 and 400?
Where are the BSR code, date and CIN used?
Do capital gains attract self-assessment tax?
Can I pay self-assessment tax for a belated or revised return?
Can TaxClue compute and pay my self-assessment tax online?
How do I pay self-assessment tax online?
What happens if I pay self-assessment tax under the wrong head?
Can I get a refund of excess self-assessment tax?
How do I correct a wrong assessment year or amount on my challan?
Do I need my PAN linked with Aadhaar to pay self-assessment tax?
Official Sources & Legal References
Every regulatory detail on this page — the section, challan head, interest provisions and due dates — is drawn from primary law and official government sources. Verify them directly:
- Income Tax Department — Department portalOfficial portal of the Income Tax Department
- e-Filing Portal & e-Pay Tax (Challan)Pay self-assessment tax under minor head 300 and file your ITR
- Income-tax Act & Rules — Section 140ASection 140A and interest under Sections 234A/234B/234C
- Protean (NSDL) TIN — OLTAS Challan StatusVerify challan status, BSR code and CIN
Related Guides
How to File ITR Online (FY 2025–26)
Read guide ArticleITR Filing Guide 2026–27
Read guide ArticleNew vs Old Tax Regime 2025–26
Read guide ArticleIncome Tax Slabs 2025–26
Read guide ArticleCapital Gains Exemptions (54/54F/54EC)
Read guide ArticleBelated, Revised & ITR-U Explained
Read guide ArticlePAN–Aadhaar Linking (Rule 114AAA)
Read guideSelf-Assessment Tax Resources — All Free
Pay the Right Balance Tax Before You File
Expert-managed self-assessment tax under Section 140A — balance computed after TDS, TCS and advance tax, 234A/234B/234C interest applied, challan paid under head 300 and a clean, non-defective ITR filed for AY 2026–27. Free consultation, transparent fee quoted upfront, zero hidden charges.