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NISM-Series-X-B: Investment Adviser (Level 2) · Tax Provisions for Special Cases

Advance Tax, TDS and Return Filing for Investors

Updated 11 October 2026

Advance tax is income tax you pay in instalments during the year if your net tax liability after TDS is ₹10,000 or more. TDS is tax deducted by the payer at source. TCS is tax collected by the seller. You then file an ITR by the due date and reconcile credits.

Understand Advance Tax, TDS and Return Filing

Income tax is meant to be paid as you earn, not in one lump at year end. Three tools make this happen: TDS, TCS and advance tax.

TDS (tax deducted at source) means the person paying you, such as a company paying dividend or a bank paying interest, cuts tax before paying. You receive the net amount. TCS (tax collected at source) works the other way. The seller collects extra tax from the buyer at the time of sale or receipt, for specified goods and services. In short: TDS is deducted from what you receive, TCS is added to what you pay.

Advance tax covers income where no one deducts tax in full, such as capital gains, rent, business income or interest above what was deducted. You must pay it if your estimated tax for the year, after reducing TDS and TCS, is ₹10,000 or more. Resident senior citizens aged 60 or above who have no business or professional income are exempt from advance tax.

After the year ends you file an income tax return (ITR). It reports all income, claims credit for TDS, TCS and advance tax (visible in Form 26AS and the AIS), and settles any balance. Delay or shortfall attracts interest. Interest under sections 234A, 234B and 234C is a favourite exam area.

An adviser must know this chain well. It tells you what a client should pay and when, which ITR form fits, and how to avoid interest. Rates and thresholds are revised in Budgets, so always use the rates given in your current NISM workbook for the question.

Key formulas to remember

Advance tax liability test
Estimated tax for the year − TDS − TCS − relief ≥ ₹10,000 → advance tax payable
If net tax is below ₹10,000, no advance tax is due. Resident seniors (60+) without business or professional income are exempt.
Advance tax instalments (cumulative) for non-presumptive taxpayers
By 15 June: 15% | By 15 September: 45% | By 15 December: 75% | By 15 March: 100%
These are cumulative percentages of net advance tax, not amounts for each instalment. Tax paid by 31 March is still treated as advance tax paid for the year (and counts for section 234B). But a payment made after 15 March does not avoid section 234C interest on the March instalment. Section 234C interest is not charged on the June shortfall if the June instalment paid is at least 12% of the tax due on returned income, and not charged on the September shortfall if the September instalment paid is at least 36%.
Presumptive taxpayers (business under presumptive scheme)
Full advance tax in one instalment by 15 March
Applies to eligible taxpayers who opt for presumptive taxation.
Interest for late filing (section 234A)
1% per month or part of a month × (tax on total income − advance tax − TDS − TCS − relief − any self-assessment tax paid before filing), from the day after the due date to the date of filing
The base is the tax still unpaid after advance tax, TDS, TCS, relief and any self-assessment tax paid before filing. Interest starts the day after the due date of the return and runs until the actual filing date.
Interest for default in advance tax (section 234B)
1% per month or part of a month × (assessed tax − advance tax paid), where assessed tax = tax on total income − TDS − TCS − relief
TDS and TCS are already netted in assessed tax, so do not deduct them again. Applies when advance tax paid is less than 90% of assessed tax. Period starts from 1 April of the assessment year and, for a return filed under section 139(1), runs to the filing date.
Interest for deferment of instalments (section 234C)
1% per month × shortfall against the target: 3 months on the shortfall against 15% (June), 45% (September) and 75% (December); 1 month on the shortfall against 100% (March). The targets are percentages of the tax due on the returned income, after TDS and TCS.
The 15%, 45%, 75% and 100% targets are measured on the tax due on the returned income after TDS and TCS. No interest applies for the June instalment if the amount paid by 15 June is at least 12% of that same base, and none for the September instalment if the amount paid by 15 September is at least 36% of it. These 12% and 36% figures are relaxations, not the targets used to compute the shortfall. A shortfall caused by capital gains or dividend income that arose after the due date is not treated as default if you pay the tax in the remaining instalments.
ITR due dates for individuals
31 July (no audit required) | 31 October (audit cases) | belated return by 31 December of the assessment year
Check the year's notified extensions if a question mentions one. A belated return attracts a late fee under section 234F (₹5,000, or ₹1,000 if total income is up to ₹5 lakh) in addition to section 234A interest.
TDS vs TCS
TDS: payer deducts from payment | TCS: seller collects from buyer
Both are credited to the taxpayer's PAN and are adjusted against final tax.
Higher TDS without PAN
No valid PAN → TDS at the highest of (i) the rate in the Act, (ii) the rate in force, and (iii) 20% (section 206AA)
For certain specified payments, such as some interest or dividend-type payments, a different rate applies under current rules, so use your current NISM workbook for the exact rate. Remember the principle that missing PAN raises the rate.

How to solve Advance Tax, TDS and Return Filing questions

Use this order for any question on advance tax, TDS or return filing. It stops you mixing up deductions, due dates and interest.

  1. 1Identify the taxpayer: resident or non-resident, age (below 60, 60 or above), and whether there is business or professional income.
  2. 2List the incomes and find which have TDS or TCS (dividend, interest, rent) and which do not (capital gains, some interest).
  3. 3Compute the estimated tax for the year, then subtract TDS and TCS to get net tax.
  4. 4Apply the ₹10,000 test. If net tax is below it, or the exemption for senior citizens applies, no advance tax is due.
  5. 5If advance tax applies, apply the cumulative percentages 15%, 45%, 75%, 100% to net tax and match them to 15 June, 15 September, 15 December and 15 March.
  6. 6For interest, identify which section applies: 234A (late filing), 234B (advance tax under 90% of assessed tax) or 234C (instalment shortfall). Count months, with part of a month counted as a full month.
  7. 7Pick the ITR form from the income types and the filing date from the audit status.
  8. 8Check the options against the exact words of the question and eliminate traps such as 'annual' instead of 'cumulative'.

Quickest way: Four-check shortcut for MCQs

When to use it: Use this when a question gives a client profile and asks whether advance tax is due, which date applies, or which form to file.

  1. Check net tax: is estimated tax minus TDS and TCS at least ₹10,000? If not, the answer is no advance tax.
  2. Check age and income: a resident aged 60 or above with no business income is exempt.
  3. Memorise the cumulative ladder 15, 45, 75, 100 against June, September, December, March.
  4. Match the form: salary plus simple income → ITR-1; capital gains or more complex non-business income → ITR-2; business or profession income → ITR-3; presumptive business → ITR-4.

Common mistakes in Advance Tax, TDS and Return Filing

  • Treating the advance tax percentages as separate instalments, for example paying 45% again in September.

    The words '15%, 45%, 75%' look like amounts per instalment.

    Fix: They are cumulative. If you paid 15% in June, pay another 30% by September to reach 45% in total.

  • Applying the ₹10,000 threshold to total tax instead of net tax after TDS.

    Students forget that TDS already collected reduces the liability.

    Fix: Always compute estimated tax, then subtract TDS and TCS, then test against ₹10,000.

  • Confusing TDS with TCS.

    Both are 'tax at source' and both are credited in Form 26AS.

    Fix: Ask who acts. If the payer cuts tax from what it pays you, it is TDS. If the seller adds tax to what you pay, it is TCS.

  • Mixing up the three interest sections 234A, 234B and 234C.

    All three charge 1% per month and sound alike.

    Fix: A is for filing late, B is for paying too little advance tax overall (under 90% of assessed tax), and C is for missing individual instalment dates.

  • Choosing ITR-1 for a client with significant capital gains.

    ITR-1 is the simplest form and is the default for salaried people.

    Fix: Capital gains generally need ITR-2. ITR-1 allows only a limited case of long-term capital gains on listed equity as per the current form rules; if a question gives bigger or other gains, choose ITR-2. Business income such as F&O trading needs ITR-3.

  • Counting part of a month as zero in interest calculations.

    Students think in actual days.

    Fix: Interest is charged per month or part of a month, so even one day into a new month counts as a full month.

Worked examples

Example 1

For an assessment year, an investor's tax on total income after reducing TDS and TCS (the assessed tax for section 234B) is ₹1,00,000. He paid advance tax of ₹80,000 and filed his return on 31 July. Compute interest under section 234B, assuming no other adjustments.

Show the solution
  1. Assessed tax for 234B is already net of TDS/TCS, so it is ₹1,00,000. Do not deduct TDS again.
  2. 90% of assessed tax = 0.90 × ₹1,00,000 = ₹90,000.
  3. Advance tax paid is ₹80,000, which is below ₹90,000, so section 234B applies.
  4. Shortfall for interest = ₹1,00,000 − ₹80,000 = ₹20,000.
  5. Period runs from 1 April of the assessment year to 31 July: April, May, June and July = 4 months.
  6. Interest = 1% × 4 × ₹20,000 = ₹800.

Answer: Interest under section 234B is ₹800.

Example 2

A resident individual aged 45 estimates her tax for the year at ₹68,000. TDS of ₹18,000 has already been deducted on her income. Is advance tax payable? If yes, what cumulative amounts must she have paid by each due date?

Show the solution
  1. Net tax = ₹68,000 − ₹18,000 = ₹50,000.
  2. ₹50,000 is at least ₹10,000, and she is below 60, so advance tax is payable.
  3. By 15 June: 15% × ₹50,000 = ₹7,500.
  4. By 15 September: 45% × ₹50,000 = ₹22,500 cumulative, so ₹15,000 more in this instalment.
  5. By 15 December: 75% × ₹50,000 = ₹37,500 cumulative, so ₹15,000 more.
  6. By 15 March: 100% × ₹50,000 = ₹50,000 cumulative, so ₹12,500 more.

Answer: Yes. Net advance tax is ₹50,000. Cumulative payments: ₹7,500 by 15 June, ₹22,500 by 15 September, ₹37,500 by 15 December and ₹50,000 by 15 March.

Exam tips

  • Learn the dates as a ladder: 15 June, 15 September, 15 December, 15 March with 15, 45, 75 and 100 per cent. Many questions test only this.
  • Read for the taxpayer's profile first. Age 60 or above without business income, or net tax below ₹10,000, often means the answer is 'no advance tax'.
  • When a question asks for a rate, use the rate in your current NISM workbook. Rates and thresholds change with Budgets, so do not rely on old notes.
  • Eliminate options by interest section. Late filing is 234A, low advance tax overall is 234B and instalment shortfall is 234C.
  • On a negative marking paper, skip a rate-based question only if you cannot narrow to two options, and attempt the rule-based ones first.

Practice questions from Tax Provisions for Special Cases

Advance Tax, TDS and Return Filing: frequently asked questions

Who needs to pay advance tax and how is it calculated?

Anyone whose estimated tax for the year, after deducting TDS and TCS, is ₹10,000 or more. Resident senior citizens with no business or professional income are exempt. Estimate your total income, compute tax, subtract TDS and TCS, then pay the cumulative percentages by the due dates.

What are the advance tax due dates and what is the interest for missing them?

The cumulative dates are 15 June (15%), 15 September (45%), 15 December (75%) and 15 March (100%). Missing them attracts 1% per month interest under section 234C, and a total shortfall below 90% of assessed tax attracts section 234B interest. Presumptive taxpayers pay in one instalment by 15 March.

What is the difference between TDS and TCS?

TDS is tax deducted by the payer from payments such as dividend, interest or salary. TCS is tax collected by the seller from the buyer on specified sales or receipts. Both are credited to your PAN and adjusted against your final tax in the return.

Which ITR form should an investor with capital gains file?

Generally ITR-2 for an individual with capital gains and no business income. ITR-3 is for business or profession income, including F&O trading. ITR-1 is only for simple cases and allows capital gains only in the limited way the current form permits, so check the form instructions.