Understanding the sequence is everything. Here is the complete path from gross income to final tax payable — with exemptions and deductions marked at the correct positions:

Exemptions happen at Step 2 — before everything else. Deductions happen at Steps 4 and 5. Tax credits happen at Step 8. These are three different layers, and they cannot be swapped.

A tax exemption means that specific income is completely excluded from the tax base by the Income Tax Act. It never becomes part of “income” for tax computation purposes. Section 10 of the Income Tax Act 1961 lists all exempt income categories — there are over 50 clauses covering everything from agricultural income to scholarship to NRE interest.

Key Characteristics of Exemptions

• The income is removed before taxable income is calculated — it does not reduce income, it prevents it from being counted
• No upper limit in many cases (PPF interest, scholarship, government employee gratuity) — though some exemptions have caps (private sector gratuity ₹20L, leave encashment ₹25L)
• Exempt income must still be declared in the ITR — in Schedule EI (Exempt Income) — even though no tax applies
• Most exemptions are available in both Old and New Tax Regimes — except HRA, LTA, and certain allowances which are Old Regime only
• No action required to “claim” most exemptions — the income is simply not included in your taxable figures

Common Exemptions Under Section 10 — FY 2025-26

A tax deduction reduces your taxable income — but the income itself is real, declared, and counted. Deductions are listed primarily under Chapter VIA of the Income Tax Act (Sections 80C through 80U) and under Sections 24(b) (home loan interest) and 16(ia) (standard deduction).

Key Characteristics of Deductions

• The income is declared in full — the deduction amount is then subtracted to arrive at taxable income
• Deductions must be actively claimed — they do not apply automatically; you must fill in the relevant schedule in your ITR
• Almost all Chapter VIA deductions (80C, 80D, 80TTA, etc.) are available in the Old Regime only — they are not available under the New Tax Regime
• Most deductions require documentation — investment receipts, insurance premium certificates, loan statements, rent receipts
• The tax saving from a deduction equals: deduction amount × your marginal tax rate

Common Deductions — FY 2025-26

Priya — Delhi, Software Engineer, Old Regime

Step 1 — Apply Exemptions First:

Step 2 — Apply Deductions:

Tax at Old Regime rates: Approximately ₹1,40,200 + 4% cess = approximately ₹1,45,800.

A third concept that sometimes gets confused with deductions: a tax credit is subtracted directly from the tax payable — not from the income. It is even more valuable than a deduction because it reduces tax rupee-for-rupee rather than reducing the income on which tax is calculated.

Confusion 1 — “I have PPF — can I claim Section 80C deduction?”

Yes — but the two benefits are separate. Your PPF contribution is deductible under Section 80C (reduces taxable income — deduction). The interest earned on your PPF balance is exempt under Section 10(11) — it never becomes income (exemption). You claim the deduction at the time of investment; you claim the exemption at the time the interest is earned. Both apply to the same instrument — one for the contribution, one for the return.

Confusion 2 — “FD interest is ₹40,000 — I have Section 80TTA of ₹10,000 — so my exempt interest is ₹30,000?”

No — the nature of the income is different. FD interest is not eligible for Section 80TTA — 80TTA applies only to savings bank account interest, not term deposit interest. FD interest of ₹40,000 is fully taxable. Section 80TTA allows a deduction (not an exemption) of up to ₹10,000 on savings account interest. These two are also separate — one is a deduction on a specific interest type, the other is a fully taxable income on a different interest type.

Confusion 3 — “I gave to charity — can I claim 80G exemption?”

Section 80G is technically a deduction — not an exemption. Your donation is made from taxed income. The deduction under 80G (50% or 100% of the donation depending on the institution) reduces your taxable income. The word “exemption” is colloquially used — but the mechanism is a deduction under Chapter VIA. Importantly, 80G is not available in the New Tax Regime.

Confusion 4 — “My HRA is ₹2.4 lakh — so ₹2.4 lakh is exempt?”

No — the HRA received is ₹2.4 lakh, but the exempt amount is the minimum of three conditions (actual HRA, rent paid minus 10% of basic, and city-based percentage of basic). The exempt HRA is almost always less than the actual HRA received. Only the calculated exempt portion goes to Schedule EI — the taxable remainder is added to your salary. Always compute the three-condition formula rather than assuming the full HRA amount is exempt.

1. List all income sources before filing — salary, interest, rent, capital gains, business, agricultural. Categorise each: taxable or exempt.
2. Calculate HRA exemption correctly — use the three-condition formula. Submit Form 12BB to your employer with rent receipts so TDS is computed correctly throughout the year.
3. Fill Schedule EI in ITR — declare all exempt income here: PPF interest, agricultural income, NRE interest, gratuity, leave encashment, insurance maturity. Failing to declare causes AIS mismatch notices.
4. Compare Old vs New Regime — after applying all exemptions available to you, calculate taxable income under both regimes. New Regime loses 80C, 80D, HRA — but has lower rates. The right choice depends on your specific numbers.
5. Claim deductions in the correct ITR schedule — 80C goes in Part C of Chapter VIA in the ITR. 24(b) goes in Schedule HP or Schedule PGBP depending on property type. 80D goes separately. Use the ITR’s built-in schedule structure — do not lump all deductions together.
6. Check Section 87A rebate eligibility — after all exemptions and deductions, if your taxable income is at or below ₹7 lakh (New Regime) or ₹5 lakh (Old Regime), the full rebate eliminates your tax. Many taxpayers miss this rebate by not completing the full calculation.