Computation of Tax Payable
This sub‑topic explains how to compute the tax payable by an individual investor under the Indian Income‑Tax Act. Understanding the computation is crucial for the NISM Investment Adviser exam because advisers must calculate client liabilities accurately and advise on tax‑saving strategies. The content links taxable income, slab rates, surcharge, cess and rebates to the final payable amount.
Learning Objectives
- 1Define taxable income and identify allowable deductions.
- 2Apply the progressive tax slab rates to compute tax liability.
- 3Incorporate surcharge and health‑education cess correctly.
- 4Recognise common exam traps such as ignoring rebates or rounding errors.
Understanding Taxable Income
Taxable income is the portion of an individual's total income that remains after deducting all eligible exemptions, deductions (under Chapter VI‑A) and losses as prescribed by the Income‑Tax Act. It forms the base on which the slab rates are applied.
The calculation starts with gross total income (salary, house‑property, capital gains, business/profession, other sources). From this, the following are subtracted: standard deduction, Section 80C‑80U deductions, loss set‑off, and any specific exemption such as agricultural income.
For the NISM exam, remember that only the amount after these deductions is used for slab‑wise tax calculation. The exam frequently asks you to identify which component is a deduction versus an exemption, so keep the definitions clear.
- Exemption – income that is not counted at all (e.g., agricultural income up to ₹5,000).
- Deduction – amount that reduces taxable income (e.g., EPF contribution under Section 80C).
Students often apply tax rates on the gross total income, forgetting to subtract deductions. Always compute taxable income first; otherwise the tax payable will be overstated.
Progressive Tax Structure in India
India follows a progressive tax system for individual taxpayers. The income is divided into slabs, each slab being charged at a higher rate than the previous one. This ensures that higher earners pay a larger proportion of their income as tax.
The slab rates are announced each financial year in the Union Budget. For the purpose of this study material we use the widely‑known rates for FY 2023‑24 (assessment year 2024‑25): 0% up to ₹2.5 L, 5% on ₹2.5‑5 L, 20% on ₹5‑10 L and 30% above ₹10 L. These rates are the baseline; surcharge and cess are added later.
Exam questions may present a different year’s rates, so always read the question carefully. The concept of progressive computation, however, remains the same across years.
Individual Income‑Tax Slab Rates (FY 2023‑24)
| Taxable Income Range (₹) | Tax Rate |
|---|---|
| 0 – 2,50,000 | 0% |
| 2,50,001 – 5,00,000 | 5% |
| 5,00,001 – 10,00,000 | 20% |
| Above 10,00,000 | 30% |
Step‑by‑Step Computation of Tax Payable
Step 1: Determine Gross Total Income from all heads and sum them up.
Step 2: Subtract all eligible exemptions (e.g., agricultural income) and deductions (e.g., Section 80C, 80D) to arrive at Taxable Income.
Step 3: Apply the progressive slab rates to the taxable amount. The tax for each slab is calculated separately and then summed.
Step 4: Reduce the tax by any applicable rebate (Section 87A) if taxable income is within the rebate limit.
Step 5: Add surcharge (if income exceeds the surcharge threshold) and the health‑education cess (currently 4% of tax + surcharge) to obtain the final Tax Payable.
Where:
TI= Taxable Income in rupeesU_i= Upper limit of slab i in rupeesL_i= Lower limit of slab i in rupeesr_i= Tax rate for slab i expressed as decimal (e.g., 0.05 for 5%)n= Number of tax slabs applicableWorked Example
Given TI = 10,50,000 and the FY 2023‑24 slabs: Step 1: Slab 1 (0‑2,50,000) → (2,50,000‑0)×0 = 0 Step 2: Slab 2 (2,50,001‑5,00,000) → (5,00,000‑2,50,000)×0.05 = 12,500 Step 3: Slab 3 (5,00,001‑10,00,000) → (10,00,000‑5,00,000)×0.20 = 1,00,000 Step 4: Slab 4 (>10,00,000) → (10,50,000‑10,00,000)×0.30 = 15,000 Total Tax = 0 + 12,500 + 1,00,000 + 15,000 = 1,27,500 Verification: \sum_{i=1}^{4} (\text{tax for slab i}) = 1,27,500.
Tax Payable vs. Taxable Income (Illustrative)
Worked Numerical Example
Scenario
Mr. Sharma earns a salary of ₹12,00,000 per annum. He contributes ₹1,50,000 to EPF (Section 80C) and pays a health insurance premium of ₹25,000 (Section 80D). No other income or exemption applies. The adviser must compute his tax payable for FY 2023‑24.
Solution
Step 1: Gross Total Income = ₹12,00,000.<br/>Step 2: Deductions = EPF ₹1,50,000 + Health Insurance ₹25,000 = ₹1,75,000.<br/>Step 3: Taxable Income = 12,00,000 – 1,75,000 = ₹10,25,000.<br/>Step 4: Apply slab rates: <ul><li>2.5‑5 L: (5,00,000‑2,50,000)×5% = ₹12,500</li><li>5‑10 L: (10,00,000‑5,00,000)×20% = ₹1,00,000</li><li>Above 10 L: (10,25,000‑10,00,000)×30% = ₹7,500</li></ul>Tax before surcharge = ₹12,500 + ₹1,00,000 + ₹7,500 = ₹1,20,000.<br/>Step 5: No rebate (income > ₹5 L).<br/>Step 6: No surcharge (income < ₹50 L).<br/>Step 7: Health & Education Cess = 4% of ₹1,20,000 = ₹4,800.<br/>Final Tax Payable = ₹1,20,000 + ₹4,800 = ₹1,24,800.
Conclusion
The adviser concludes that Mr. Sharma must pay ₹1,24,800 as tax for the year. The example illustrates each computation step required in the exam.
Many candidates stop after calculating tax on slabs and forget to add the 4% health‑education cess. The final answer will be marked wrong if cess is omitted.
Additional Charges – Surcharge & Cess
Surcharge is levied on the tax amount (before cess) when taxable income exceeds a specified threshold. For FY 2023‑24, the surcharge rates are 10% for income between ₹50 L and ₹1 Cr and 15% for income above ₹1 Cr.
After adding surcharge, a uniform Health & Education Cess of 4% is charged on the sum of tax and surcharge. This cess is non‑negotiable and must be included in the final payable amount.
In the NISM exam, surcharge is rarely required for typical individual scenarios, but the concept may appear in advanced questions or when the candidate is asked to compute tax for high‑net‑worth clients.
Surcharge Rates (FY 2023‑24)
| Taxable Income Range (₹) | Surcharge Rate |
|---|---|
| 0 – 50,00,000 | No surcharge |
| 50,00,001 – 1,00,00,000 | 10% |
| Above 1,00,00,000 | 15% |
Impact of Deductions & Rebates
Deductions under Chapter VI‑A directly reduce taxable income, thereby lowering the tax computed in each slab. The most frequently used deduction is Section 80C (up to ₹1,50,000) which includes EPF, PPF, life‑insurance premiums, etc.
Section 87A provides a rebate of up to ₹12,500 for resident individuals whose taxable income does not exceed ₹5,00,000. This rebate completely eliminates tax liability for many low‑income earners, a fact often tested in multiple‑choice questions.
Remember that rebates are applied after slab‑wise tax calculation but before surcharge and cess. Ignoring the order leads to incorrect tax payable.
Quick Checklist for Exam
Before finalising your answer, run through this checklist:
- Gross Total Income calculated correctly?
- All eligible exemptions and deductions applied?
- Taxable Income placed into correct slabs?
- Rebate (if any) subtracted before surcharge?
- Surcharge added (if applicable) and then 4% cess applied?
Using this systematic approach reduces the chance of missing any component.
⭐Exam Takeaways
- Taxable income = Gross total income – exemptions – deductions; only this base is used for slab calculation.
- Apply each slab separately; sum the tax from all slabs to obtain pre‑surcharge tax.
- Rebate under Section 87A is allowed only when taxable income ≤ ₹5 L and is deducted before surcharge.
- Surcharge is added on tax (pre‑cess) when income exceeds the prescribed threshold; health‑education cess (4%) is always added last.
- Never forget the 4% cess – it is a common cause of answer mismatch in the exam.
Practice Questions
8 questions on Computation of Tax Payable
What is taxable income as defined in the study material?
What is the tax rate applied to income between ₹5,00,001 and ₹10,00,000 for FY 2023‑24?
Which of the following is classified as a deduction rather than an exemption?
For a taxable income of ₹10,50,000, what is the total tax before adding surcharge and cess?
What is the final tax payable by Mr. Sharma, who has a gross income of ₹12,00,000, EPF contribution of ₹1,50,000 and health‑insurance premium of ₹25,000?
At what taxable income level does surcharge begin to apply for FY 2023‑24?
Under Section 87A, a resident individual can claim a rebate of up to ₹12,500 provided the taxable income does not exceed which amount?
An individual has a gross total income of ₹15,00,000 and deductions of ₹2,00,000. Assuming no exemptions, what is the final tax payable after adding the 4% health‑education cess (no surcharge applies)?