What is gross total income?

Gross total income is the total of the five heads of income after you have set off the losses the Act allows, and before the deductions in the chapter that used to be called Chapter VI-A. Salary, house property, business, capital gains and other sources are added here. A loss that cannot be set off this year is carried forward. It does not sit inside this total as a negative you invented.

The salary head is already net of the standard deduction. That cut is part of computing salary income. It is not one of the later deductions. HRA exemption, in the old regime, is also taken while computing the salary head. What remains of salary, plus the other heads, is gross total income.

Section 123 (this was section 80C), the health-insurance deduction, and the extra NPS deduction come off gross total income. What is left is total income, which is the figure the slabs and the section 156 rebate look at. People say “taxable income” for that later figure. The two names are not interchangeable.

In the new regime most of those later deductions are switched off by section 202. Gross total income and total income are then the same, apart from an employer’s NPS deduction where section 124 still applies. That is why a salaried person’s new-regime return can look like one number twice.

A worked example

You enter salary of ₹15,00,000 on the income tax calculator.

In the new regime the standard deduction is ₹75,000. Income after that cut is ₹14,25,000. Nothing further is allowed under section 123, so the taxable income the slabs use is ₹14,25,000. The bill is ₹97,500.

In the old regime the standard deduction is ₹50,000. Income after that cut, which is the gross total income if salary is the only head, is ₹14,50,000. A section 123 claim of ₹1,50,000 comes off next. Taxable income is ₹13,00,000. The bill is ₹2,10,600.

The income tax calculator shows both steps when you mark the income as salary and type a deduction. The filing guide is where those heads land on the form.

Mistakes people make

• Typing CTC as if it were gross total income.
• Subtracting PPF or ELSS and then calling the result gross total income. That result is total income.
• Taking the standard deduction twice, once in the salary head and again as a section 123 item.
• Adding a long-term share gain into this total and then also taxing it in the slabs. Section 198 tax is separate.
• Comparing a friend’s “package” with your gross total income.

The section

The heads of income and the set-off rules sit in the Income-tax Act, 2025. The deductions that come after gross total income include section 123 (this was section 80C). The standard deduction that comes before it is section 19 (this was section 16(ia)). The slab guide starts from the figure that is left.