Set-Off and Carry Forward of Losses Under Income Tax

A loss in one year does not have to be a dead end for tax purposes. The Income Tax Act allows losses to be set off against other income, and where they cannot be fully absorbed in the same year, carried forward to future years, but the rules differ meaningfully depending on which head the loss arises under. Getting the sequence and the carry-forward deadlines wrong is one of the more expensive mistakes a taxpayer can make, because a missed due date can permanently forfeit the right to carry a loss forward at all.

Intra-Head Set-Off: Within the Same Head of Income

Intra-head set-off allows a loss from one source to be adjusted against income from another source under the same head. For example, a loss from one business can generally be set off against profit from another business in the same year, and a loss from one house property can be set off against income from another house property. There are specific carve-outs within this rule too; for instance, a loss from a speculative business can only be set off against speculative business income, not against non-speculative business profit, even though both technically fall under "business" income.

Inter-Head Set-Off: Across Different Heads

Inter-head set-off allows a loss under one head to be adjusted against income under a different head, but only after intra-head set-off has been exhausted, and subject to specific restrictions for certain loss types. A non-speculative business loss, for example, can generally be set off against income from any other head except salary. Capital losses, by contrast, cannot be set off against any other head at all; a capital loss can only ever be set off against capital gains.

The House Property Loss Cap

House property loss deserves special attention because of a cap introduced to limit how much can be set off against other heads in a single year: a loss under the head house property, typically arising from home loan interest exceeding rental income (or from a self-occupied property with no rental income to offset the deemed interest deduction), can be set off against income from any other head, including salary, but only up to Rs 2 lakh per year. Whatever remains unabsorbed beyond that cap cannot be adjusted against other heads that year at all; it must be carried forward. Our detailed guide on self-occupied vs let-out house property taxation covers how this cap interacts with the home loan interest deduction and which regime (old vs new) allows it at all, since the new regime restricts this deduction significantly.

Carry-Forward Periods by Loss Type

Once current-year set-off is exhausted and a loss remains unabsorbed, it can be carried forward to future assessment years, but for a limited period that depends on the type of loss, and it can generally only be set off against specific categories of income in those future years.

Unabsorbed depreciation is a distinct category with its own indefinite carry-forward treatment under separate provisions and is not covered by the standard loss carry-forward periods above; if your business has significant depreciation-driven losses, this needs a separate computation with your CA rather than being lumped in with ordinary business loss.

Filing On Time Is a Precondition, Except for House Property Loss

This is the rule that costs taxpayers the most when missed: to carry forward a business loss, speculation loss, or capital loss, the return for the year the loss arose must be filed by the original due date. Filing late (even if before the extended belated-return deadline) forfeits the right to carry forward these losses, even though the loss amount itself is still computed and recorded for that year.

House property loss is the notable exception. It can still be carried forward even if the return is filed after the due date. This distinction matters most for taxpayers who have both a business loss and a house property loss in the same year and assume a late filing affects both equally; it does not.

If your business or investments have generated a loss this year, treat the filing due date as non-negotiable regardless of whether you expect a refund or think filing late carries no real consequence; the consequence here is the permanent loss of a carry-forward right that could otherwise offset tax in a profitable year down the line.

Set-Off Sequence: Current Year First, Then Carry Forward

The law requires set-off to happen in a fixed sequence: current-year intra-head set-off first, then current-year inter-head set-off (where permitted), and only the amount that remains unabsorbed after both steps gets carried forward. A taxpayer cannot choose to skip current-year set-off against eligible income in order to preserve a larger carry-forward balance for a future year with potentially higher income; the current year's eligible income must absorb the loss first, whether or not that is the more tax-efficient outcome in isolation.

Loss set-off and carry-forward rules reward careful year-by-year tracking, correct sequencing, and above all, timely filing. A single missed due date can convert an otherwise valuable carry-forward asset into a loss that simply disappears for tax purposes. If your business, investments, or rental property have generated a loss this year, get the set-off computation and carry-forward schedule reviewed before filing. Our tax advisory services cover full loss computation, set-off planning, and carry-forward tracking across years.