Direct Tax Laws and International Taxation · Assessment of Companies

Computation of Total Income of Companies under Income-tax Act 2025

Updated 11 October 2026 · Fact-checked

Computing a company's total income means taking profit as per the books, adjusting it to find income under each head, setting off current-year losses, then carrying forward unabsorbed losses as the Act permits. Speculation and specified-business losses can be set off only against the same type of profit. Follow the steps in order.

Understand Computation of Total Income of Companies

A company is taxed on its total income for the tax year. You build it head by head: business income, house property, capital gains and other sources. Salary rarely applies to a company.

Most exam marks sit in business income. You start with net profit per the statement of profit and loss. You add back items the Act disallows and items not allowed on the accrual basis. You deduct items allowed but not debited, and exempt or separately taxed income. The result is business income.

Losses are the company-specific complication. Normal business losses can be set off across heads under the general rules. Speculation losses and specified business losses are ring-fenced. Under section 113(1), a speculation loss is set off only against profits of another speculation business. Under section 114(1), a loss of a specified business (referred to in section 46) is set off only against profits of another specified business.

Unabsorbed amounts are carried forward. A speculation loss is carried forward to the following tax year and set off against speculation profits there. Under section 113(3), it cannot be carried forward for more than four tax years immediately succeeding the year in which it was first computed. Section 114(2) allows carry forward of specified business losses against specified business profits of later years. The text you have for section 114 sets no time limit.

Companies also face a deeming rule. Under section 113(5), if part of a company's business is purchase and sale of shares of other companies, it is deemed to run a speculation business to that extent. Section 113(6) switches this off if the gross total income consists mainly of house property, capital gains or other sources income, or if the principal business is trading in shares, banking or granting loans and advances.

Key rules to remember

Business income (starting point): Business income = Net profit per books + Disallowed items − Allowed items not debited − Exempt / separately taxed income; Always reconcile from the books. Remove items taxed under another head.
Speculation loss set-off (s.113(1)): Speculation loss is set off only against profits of another speculation business; It cannot be set off against normal business income or other heads.
Speculation loss carry forward (s.113(2)-(3)): Carry forward to following tax year; maximum four tax years immediately succeeding the loss year; Set off only against speculation profits of those years.
Specified business loss (s.114): Loss of specified business (s.46) is set off only against profits of another specified business; unabsorbed loss is carried forward; Do not mix it with normal business profits.
Deemed speculation for companies (s.113(5)-(6)): Share trading part of business = speculation business, unless s.113(6) exception applies; Exception: GTI mainly from house property, capital gains or other sources; or principal business is share trading, banking or lending.

How to solve Computation of Total Income of Companies questions

Use this order for any company computation question. It keeps the working clean and shows the examiner each step.

1Read the facts and note the company's type of business. Check whether it is a share-trading, banking or lending company, since s.113(5) may then not apply.
2Start with net profit per the statement of profit and loss. Show it as the first line.
3Add back items debited but not allowable, such as disallowed expenses, provisions not allowed and income-tax debited.
4Deduct items credited to profit but taxable under another head or exempt, such as rent from house property, capital gains and dividends taxed separately.
5Split business income into normal business, speculation business and specified business. Compute each separately.
6Set off losses by the ring-fencing rules. Speculation loss goes only against speculation profit. Specified business loss goes only against specified business profit.
7Carry forward the unabsorbed loss and note the time limit, four tax years for speculation loss.
8Add the other heads, then apply any brought-forward losses and deductions to reach total income. State the final figure clearly.

Quickest way: Three-bucket loss check

When to use it: Use when a question gives several businesses with profits and losses and asks for total income and carry forward.

Put each business into a bucket: normal, speculation or specified.
Net profit and loss inside each bucket first.
A bucket with a net loss cannot rescue or reduce the other buckets if it is speculation or specified. Carry it forward.
A normal business loss can be set off against other heads as per the general rules.
Add the positive buckets to get income and list the carried-forward losses with their remaining years.

Common mistakes in Computation of Total Income of Companies

Setting off a speculation loss against normal business profit.
Students treat all business losses as one pool.
Fix: Remember s.113(1): speculation loss is set off only against profits of another speculation business.
Carrying forward a speculation loss for more than four years.
Students confuse it with other loss periods they have memorised.
Fix: Use s.113(3): no carry forward beyond four tax years immediately succeeding the loss year.
Treating share trading of every company as speculation.
Students ignore the exception in s.113(6).
Fix: Check whether gross total income is mainly from house property, capital gains or other sources, or whether the principal business is share trading, banking or lending.
Starting from the wrong profit figure or double counting income.
Income credited to the profit and loss account is taxed again under business income.
Fix: Deduct income that belongs to other heads or is exempt, then add it under the correct head.
Mixing up specified business loss with speculation loss rules.
Both are ring-fenced, so the rules look alike.
Fix: Match the section: s.113 for speculation, s.114 for specified business. Note that the s.114 text supplied states no four-year limit.

Worked examples

Example 1

A company has the following results for the tax year: normal business profit ₹12,00,000; speculation business A profit ₹3,00,000; speculation business B loss ₹5,00,000. Compute the income from business and the speculation loss to be carried forward.

Show the solution

Both A and B are speculation businesses, so net them first under s.113(1): ₹3,00,000 − ₹5,00,000 = loss of ₹2,00,000.
The net speculation loss of ₹2,00,000 cannot be set off against normal business profit.
Normal business income stays at ₹12,00,000.
The unabsorbed ₹2,00,000 is carried forward to the following tax year under s.113(2).
It can be set off only against speculation profits, for up to four tax years immediately succeeding the loss year (s.113(3)).

Answer: Business income is ₹12,00,000. Speculation loss of ₹2,00,000 is carried forward for set-off against speculation profits only, up to four succeeding tax years.

Example 2

A trading company's net profit per books is ₹20,00,000. It includes rental income of ₹2,00,000 and a speculation gain of ₹1,00,000. Disallowable expenses debited are ₹3,00,000. Compute income from normal business, assuming the other rental and speculation items are already correctly classified and no brought-forward losses exist.

Show the solution

Start with net profit: ₹20,00,000.
Add disallowable expenses: ₹20,00,000 + ₹3,00,000 = ₹23,00,000.
Deduct rental income taxed under house property: ₹23,00,000 − ₹2,00,000 = ₹21,00,000.
Deduct the speculation gain, which is shown separately as speculation business: ₹21,00,000 − ₹1,00,000 = ₹20,00,000.
Speculation income of ₹1,00,000 is computed separately.

Answer: Income from normal business is ₹20,00,000. Speculation business income is ₹1,00,000 and rent is taxed under house property.

Exam tips

In the written part, show each loss bucket separately. Examiners award marks for the ring-fencing step.
State the section when you apply a loss rule. Cite s.113 for speculation and s.114 for specified business.
For carry forward, always write the number of years left. A missing time limit costs marks.
Check the type of company before applying s.113(5). Banks, lenders and share traders are treated differently under s.113(6).
In MCQs, look for the trap: a loss being set off against the wrong type of profit.

Practice questions from Assessment of Companies

Computation of Total Income of Companies in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

Computation of Total Income of Companies: frequently asked questions

Can a speculation loss be set off against normal business income?

No. Under s.113(1) of the Income-tax Act, 2025, a speculation loss is set off only against profits and gains of another speculation business. The unabsorbed amount is carried forward.

For how long can a speculation loss be carried forward?

Under s.113(3), not for more than four tax years immediately succeeding the tax year in which the loss was first computed. It can be set off only against speculation profits in those years.

When is a company deemed to carry on speculation business?

Under s.113(5), if part of its business is purchase and sale of shares of other companies, it is deemed to carry on speculation business to that extent. Section 113(6) excludes certain companies, such as those whose principal business is share trading, banking or lending.

How are specified business losses treated?

Under s.114, a loss of a specified business referred to in s.46 is set off only against profits of another specified business. The unabsorbed loss is carried forward to following tax years for the same set-off.