Gross Total Income vs Net Taxable Income: How Tax Is Computed
Last verified: June 2026, against the Income Tax Act and Budget 2025 provisions cited below. Figures apply to FY 2025-26 (AY 2026-27). General information, not personal tax advice.
“Gross total income”, “total income”, “taxable income” — these terms get used loosely, but the tax law treats them precisely, and your tax is charged only on the final figure. Understanding the journey from gross to net helps you read your own computation and spot errors. Here is how it works.
Step 1: the five heads of income
All income is first classified under five heads:
- Salaries
- Income from house property — see our house property guide
- Profits and gains from business or profession
- Capital gains
- Income from other sources (interest, dividends, winnings)
Step 2: Gross Total Income (GTI)
After applying set-off of losses, the income under all five heads is added together. This total is your Gross Total Income (GTI).
Step 3: Net (Total) Taxable Income
From GTI you subtract Chapter VI-A deductions (80C, 80D, 80CCD, 80G, etc., if you are on the old regime). The result is your Total Income, also called Net Taxable Income — and this is the figure on which slab tax is computed.
| Stage | What it is |
|---|---|
| Income under 5 heads | Salary, house property, business, capital gains, other sources |
| = Gross Total Income | Sum of all heads after set-off of losses |
| − Chapter VI-A deductions | 80C, 80D, 80CCD(1B), 80G, etc. |
| = Net Taxable Income | The figure tax is charged on |
Worked example
Salary ₹12,00,000 + savings interest ₹20,000 + rental income ₹1,00,000 = GTI ₹13,20,000. Less 80C ₹1,50,000 and 80D ₹25,000 (old regime) = Net Taxable Income ₹11,45,000. Slab tax applies to ₹11,45,000, not ₹13,20,000.
Why the distinction matters
Some limits are tested against GTI (for example, certain 80G donation ceilings are a percentage of adjusted GTI), while your tax and the 87A rebate are based on net taxable income. Mixing them up leads to wrong claims.
A second example with capital gains
A salaried investor has salary of ₹10.5 lakh (after standard deduction), FD interest of ₹50,000 and a short-term gain on shares of ₹1 lakh. Gross total income = ₹12 lakh. Under the new regime there are almost no deductions, so net taxable income is also ₹12 lakh. Slab tax on the ₹11 lakh of normal income is covered by the Section 87A rebate, but the rebate cannot be used against the ₹20,000 of tax on the special-rate share gain, so she still pays about ₹20,800 including cess.
Where losses fit in
Losses are adjusted while arriving at gross total income, not afterwards. A house-property loss of up to ₹2 lakh can reduce salary income in the old regime; capital losses can only be set off against capital gains. Chapter VI-A deductions such as 80C and 80D are subtracted only after gross total income is known. See set-off and carry-forward of losses.
Why lenders and forms ask for different figures
Banks often look at gross total income in your ITR acknowledgment to judge income stability, while your tax liability depends on net taxable income. Keep both handy when applying for a loan.
What changes under the Income-tax Act, 2025
The Income-tax Act, 2025 replaced the 1961 Act from 1 April 2026. Returns for FY 2025-26 (AY 2026-27) are still filed under the old Act, old section numbers and old forms. From tax year 2026-27 onwards, section numbers and many form numbers change — for example, Form 16 becomes Form 130, Forms 15G/15H merge into Form 121, Form 26QB becomes part of Form 141 and Form 10E becomes Form 39. The underlying rules discussed here were largely carried over; only the references change.
FAQs
Can deductions bring my income below the 87A threshold?
Yes. The rebate is tested on net taxable income, so deductions that reduce it below the limit help — though in the new regime few deductions are available.
Is GTI the same as taxable income?
No. GTI is before Chapter VI-A deductions; taxable (total) income is after them, and tax is charged on the latter.
Are deductions subtracted before or after GTI?
After. You arrive at GTI first, then subtract Chapter VI-A deductions to get net taxable income.
Which figure is the 87A rebate based on?
Net taxable income (total income), not GTI.
