Tax-Loss Carryforward: Using Past Losses Against Future Profit

A tax-loss carryforward lets a loss made in one year cut the tax charged on profit made in a later year. The relief exists so that a business is taxed across its whole life rather than on its good years alone. The loss is set against later taxable profit until it runs out, and whatever is left is worth something only if profit large enough to absorb it actually arrives.

Here is what sits underneath that. Tax is charged one year at a time, and a year is an accounting convenience rather than anything a business actually experiences. Businesses do not earn in neat annual slices. Businesses lose money while a new machine is being paid for, lose money when a big customer leaves, and then earn it back over the three years that follow. If each year were taxed as though it stood alone, a business that lost Rs 5,00,000 and then made it back would be taxed on the recovery as if the loss had never happened, and it would end up paying more tax across its life than a steadier business that earned exactly the same amount in total.

The relief touches only the profit tax is charged on, it absorbs no more of a balance than a year's profit allows, and the balance it leaves unused is worth something only against profit that has not yet arrived. How long a loss may be carried and what can stop it being used are settled only by the tax authority.

What is a tax-loss carryforward?

A tax-loss carryforwardA loss from an earlier year that the tax rules let a business subtract from the profit of a later year, so the later year is taxed on less. is a loss from an earlier year that has been kept on record and is allowed to reduce the profit a later year is taxed on. Notice the two halves of that. The loss already happened and cannot be undone. The rule lets the loss travel forward in time and meet a profit that has not happened yet. A rule that lets something travel forward can also put conditions on the journey, and everything difficult about the subject sits in that second half.

A carryforward is not money and it is not an amount anybody is owed; it is permission to be taxed on less, and permission is only worth something to a business that has profit to be taxed on. A discount voucher gives Rs 500/- off at a shop, but only against a purchase, and the shop will not hand over Rs 500/- in cash if nothing is bought. Somebody who shops there every week treats that voucher as good as money. Somebody who may never walk in again treats it as waste paper. Both are holding the same voucher. Nothing separates them except whether the purchase is coming.

The profit a carryforward meets is not the profit printed in the accounts but taxable profitThe profit figure a tax computation runs on, being the accounting profit after the adjustments the tax rules require, so the two figures rarely match.. Taxable profit starts from the accounting figure and is then pushed about by the tax rules until it becomes the number tax is actually charged on. The accounting figure and the taxable figure rarely match, and the worked figures below keep them apart.

Why does the relief exist at all?

The honest answer is not generosity. ReliefAny amount the tax rules allow a business to subtract before tax is worked out, so it lowers the tax bill rather than being a payment from anybody. for past losses exists because taxing each year in isolation would produce a result nobody would defend once it is stated plainly: two businesses that earned exactly the same amount over their lives would pay different amounts of tax, and the one that had a bad year would pay more.

Carryforward exists to tax a business over its life rather than over its best years, and the clearest way to see that is to put a steady earner beside an uneven one whose lifetime earnings are identical. Picture two tailors on the same street. The first takes in about the same amount every year, quietly, for three years. The second has a terrible first year because the shop floods, then two strong years once the school uniform contracts come through. Add up what each of them earned across the three years and the totals are the same. Without a carryforward, the flooded tailor is taxed on the two good years in full and gets nothing at all for the bad one, so the flood costs money twice: once when it happened, and again at the tax counter two years later.

The arithmetic runs at an illustrative rate of 25 per cent, and a different rate would scale every tax figure in the same proportion without changing the comparison. The steady tailor earns Rs 5,00,000 three times and pays Rs 1,25,000 three times, so Rs 3,75,000 in all. The uneven tailor loses Rs 5,00,000, then earns Rs 10,00,000 twice. With no relief for the loss, the tax is Rs 2,50,000 twice, so Rs 5,00,000. Allowing the Rs 5,00,000 loss to be carried into year two, the second tailor is taxed on Rs 5,00,000 rather than Rs 10,00,000 that year, and the lifetime tax comes to Rs 3,75,000, exactly matching the steady tailor. The equality of the two lifetime tax bills is the whole purpose of the relief, and it is why the relief is a correction rather than a concession.

How is a loss used up against a later profit?

The mechanics are simpler than the language around them. The loss balance sits on record. When a later year produces taxable profit, the loss is set against that profit, the profit that remains after the setting-off is what tax is charged on, and the balance falls by the amount that was used. The act of setting off is utilisationUsing part or all of a loss balance against a later year's taxable profit. The balance falls by exactly the amount set off.. A balance falls by exactly the profit that absorbs it, and never by more.

A carryforward reduces the profit the tax computation runs on and never touches the profit reported in the accounts. The reported figure stays exactly where it was, and only the tax line moves. The two profits are easily confused, and only one of them is ever printed. Book profitThe profit reported in the financial statements, worked out under the accounting rules rather than the tax rules. is what the accounting rules produce and it is what appears on the income statement. Taxable profit is what the tax rules produce and it appears nowhere on the face of the statements. A loss carried forward lives entirely in the second computation. Chitra Binding, a binding works that Anjani Stationers acquired control of at the start of year two, arrived carrying Rs 14,00,000 of old tax losses. Chitra Binding reported a book profit of Rs 10,00,000 in year two, and it reported Rs 10,00,000 whether or not a single rupee of old loss was used. Only the tax charged on it changed.

Chitra Binding's book profit for year two is Rs 10,00,000. Its taxable profit is assumed to be Rs 8,00,000, the difference being the ordinary sort of adjustment the tax rules make to an accounting figure. Rs 8,00,000 is the profit the losses could meet, so Rs 8,00,000 of the balance is used and not Rs 10,00,000. Getting this right matters more than it looks: a loss balance is absorbed by taxable profit, never by book profit, and reading the wrong figure will overstate how fast a balance disappears.

Why does the tax line fall below the expected rate?

When relief is used, something visible happens to the income statement. The tax charged stops being the rate multiplied by the pre-tax profit, and a reader who does that multiplication in their head gets an answer that does not match the reported figure. The mismatch is where the effective tax rateThe tax charged for a year divided by the profit before tax for that year. The accounts show the effective rate rather than the rate written in the rules. parts company with the rate in the rules, and losses used in the year are one of the two ordinary reasons for the gap.

Relief for past losses pushes the tax line down without changing the profit it is divided by, so the effective rate falls below the rate the computation started from and the whole of the difference is explainable line by line. Anjani Stationers earned Rs 38,00,000 before tax in year two. At the illustrative 25 per cent that would be Rs 9,50,000 of tax. Two things move it. Rs 2,00,000 of expenses that the tax rules do not allow reduce book profit but are not permitted to reduce taxable profit, so they push the tax up by Rs 50,000. Then Rs 8,00,000 of Chitra Binding's inherited losses, used in the group's tax computation, push the tax down by Rs 2,00,000. Rs 9,50,000 plus Rs 50,000 less Rs 2,00,000 is Rs 8,00,000, the tax expense actually reported, and Rs 8,00,000 on Rs 38,00,000 is 21.1 per cent.

What happens to the part of the loss that is not used?

Only as much of a loss can be used as there was taxable profit to absorb it. If the balance is larger than the profit, the profit is wiped out, the tax for that year is nil, and the rest of the balance stays on record. The part that stays on record is the unused balanceThe part of a past loss that no later profit has yet absorbed. The unused part stays on record waiting for a year with enough taxable profit to meet it., and it is where the arithmetic on a loss and the value of a loss part company.

An unused balance is a claim on a future that has not happened, so its value is conditional in a way that the arithmetic on it never shows. The arithmetic is trivially easy, and that is exactly the danger. Rs 6,00,000 of unused losses at the illustrative 25 per cent is Rs 1,50,000 of tax not paid. Anybody can do that multiplication in four seconds and write the answer in a cell. The cell cannot hold the three questions the number depends on: whether profit of Rs 6,00,000 will actually arrive, whether the balance is still available by the time it does, and whether the conditions attached to it still hold. The accounts have their own way of carrying an unused balance, as a deferred tax asset, and that recording has its own tests and is a subject of its own.

The voucher again. A voucher worth Rs 500/- off a purchase of Rs 2,000/- is worth Rs 500/- to somebody about to buy a Rs 2,000/- item this week. The same voucher is worth rather less to somebody who might buy something next year, and nothing at all to somebody who will never shop there. A face value is an upper limit rather than a valuation, so the face value printed on the voucher is the same in all three cases and says almost nothing.

When is an unused loss worth nothing at all?

Three separate things can each reduce a balance to nothing, and only one of them is about the balance itself. The first and by far the commonest is that the profit never arrives. A business that keeps losing money keeps adding to the balance and keeps failing to use any of it, so the largest loss balances usually sit with the businesses least able to turn them into anything. The second is that the balance stops being available under the rules that govern it. The third is that a condition attached to using it is no longer met.

An unused balance survives all three tests or it is worth nothing, and because they are tests rather than adjustments there is no partial credit for passing two of them. This is a different shape from most valuation questions. If a machine turns out to be less useful than expected, it is still worth something. If a loss balance cannot be used, it is not worth a reduced amount, it is worth nil, and it disappears without ever appearing as a payment or a loss anybody records. A household that has been counting on it simply finds that a bill they had planned around arrived in full.

How do Chitra Binding's losses work through the group's year two tax?

Now put it on the case. The shape of this one matters as much as the arithmetic. Anjani Stationers prints school notebooks and has been profitable in every year on record: Rs 28,00,000, then Rs 38,00,000, then Rs 30,00,000. Anjani Stationers has never had a loss, so it has never had anything to carry forward. Chitra Binding, the binding works it acquired 70 per cent of at the start of year two, arrived carrying Rs 14,00,000 of accumulated tax losses from its years before the acquisition. Every rupee of relief anywhere in these figures comes from the subsidiary, and none of it comes from the printer.

In year two, Rs 8,00,000 of the Rs 14,00,000 was used and Rs 6,00,000 remains, and the amount used was decided by how much taxable profit there was to absorb it rather than by anybody's choice. There was nowhere near enough profit to absorb Rs 14,00,000, so the balance did not fall by Rs 14,00,000. The year could take Rs 8,00,000, so the balance fell by Rs 8,00,000. Read the table one row at a time.

How does a lender or a buyer actually use a loss balance?

Outside the classroom a loss balance is not a curiosity. A loss balance sits in real conversations about what a business is worth and what it will pay out next year, and it is treated very differently depending on which conversation it enters. The differences are not disagreements about the arithmetic. Everybody gets Rs 1,50,000. The disagreements are about how much weight a conditional number should carry.

A lender uses a loss balance to forecast next year's cash tax, a buyer uses it to argue about price, and the careful version of both treats the balance as an upper limit rather than as an amount. A lender working out whether Anjani Stationers can service a facility next year needs the cash going out, and tax is one of the larger outgoings. A balance that will be used next year means less cash leaving, so the forecast improves. A buyer negotiating for a stake wants to add the value of the balance to the price of the business, and the seller wants the same. The negotiation has an arithmetic answer of Rs 1,50,000 and a real answer somewhere between nil and Rs 1,50,000, decided by how confident anybody is about the profit arriving.

The last row of the table above is the one that matters. Not one of the four readers is entitled to write Rs 1,50,000 down as a fact, and all four of them need the figure. A figure nobody is entitled to and everybody needs is an uncomfortable combination, and it is where the failure below comes from.

Four settings of next year's profit cover the whole range. At Rs 6,00,000 of profit, the default, the whole balance is used, the year is taxed on nothing and Rs 1,50,000 of tax is saved. At Rs 3,00,000, half the balance is used, Rs 75,000 is saved and Rs 3,00,000 waits for another year. A balance can only shelter as much profit as it is large enough to cover, so at Rs 15,00,000 the balance is exhausted in one go, Rs 1,50,000 is saved, and tax of Rs 2,25,000 is still charged on what is left over. At Rs 0 nothing at all happens: no tax is charged, no relief is used, and the full Rs 6,00,000 is still sitting there. The no-profit case is the one worth remembering. Nothing is used, nothing is saved, and the arithmetic on the face amount still says Rs 1,50,000.

Anjani Stationers Private Limited and Chitra Binding Works Private Limited are invented.
Educational material. Not advice on any investment, tax, budget or market position.