Business Tax Deductions in India: What You Can and Can't Claim (2026)

This guide is written for LegalDev.in and reflects the Income-tax Act, 2025, which came into force on 1 April 2026 and now governs Tax Year 2026-27. Every rule, rate, and section reference below is checked against government and primary sources listed at the end of the article, not against competitor blogs.

Business tax deductions are the legitimate business expenses the Income Tax Department lets you subtract from your revenue before working out how much tax you owe, and the rule that decides most of them is simple: the expense has to be incurred wholly and exclusively for your business, not for you personally, and it can't be a capital purchase or an illegal payment.

Quick Answer: Key Takeaways

What Counts as a Business Expense in India

For decades, Indian tax practitioners have called this the "Section 37 test," referring to Section 37(1) of the Income-tax Act, 1961. That Act was repealed with effect from 1 April 2026, when the Income-tax Act, 2025 took over. The repeal doesn't disturb anything relating to tax years before that date, so assessments for earlier years still run under the 1961 Act. But if you're reading this because you're planning deductions for the current financial year, you're filing under the new Act.

The substance hasn't changed. The general deduction test that used to sit in Section 37(1) now sits in Part F of the Income-tax Act, 2025, and the closest equivalent to the old Section 37(1) language is now Section 34, which sets out the general conditions for allowable deductions. The core test is still the same three-part filter:

1. The expense must be wholly and exclusively for the purpose of the business or profession.
2. It must not be capital expenditure (a one-time purchase of something that lasts years, like buying a building or a car outright).
3. It must not be a personal expense of the business owner.

On top of that, certain categories are named as never deductible, regardless of how "business-related" they seem: expenses incurred for illegal activities or purposes prohibited by law are not allowed as a deduction, and CSR (Corporate Social Responsibility) spending is specifically excluded too. Fines and penalties for breaking a law also fall outside this deduction, because a penalty is, by definition, a consequence of not following the rules, not a cost of running the business properly.

Common Business Expenses You Can Legitimately Claim

Most day-to-day running costs are deductible once you can show they're genuinely for the business:

• Office or shop rent
• Salaries, wages, and staff benefits
• Interest on business loans
• Repairs and maintenance of business premises or equipment
• Professional fees (accountant, lawyer, consultant)
• Advertising and marketing spend
• Loan-raising costs, such as registration, stamp duty, and brokerage on a business loan
• Depreciation on business assets (computers, machinery, vehicles, furniture)
• Insurance premiums on business assets
• Internet, electricity, and utility bills for business premises

Advertising and promotional expenses incurred by a company for its business purposes are applicable for deduction, and so are professional fees. These fall under Sections 30 to 36 of the older framework (now reorganised under Part F), while the general residuary clause covers whatever genuine business cost doesn't have its own named section.

Car Expenses for Business: What You Can Actually Deduct

This is one of the most misunderstood deductions, mainly because the answer depends entirely on how the car is used.

If the car is used only for business, you can deduct:

• Fuel, insurance, and maintenance as running expenses
• Interest on a car loan taken to buy the vehicle
• Depreciation on the car itself

If the car is used for both business and personal trips, every one of those costs has to be split proportionately, and only the business-use share is deductible. If it's partly for personal use, expenses need to be proportioned accordingly, and the practical way to do this is a logbook that separates business and personal mileage, backed by receipts and payment proof.

Depreciation rates for a business car: a 15% depreciation rate applies to motor cars used for business other than running them on hire, while 30% applies only when the vehicle is used in the business of running it on hire, such as a taxi or rental fleet. Electric vehicles get a higher 40% depreciation rate. If the car is bought and put to use for less than 180 days in a financial year, only half of the usual depreciation rate is allowed for that year.

Two conditions matter for eligibility. Depreciation is allowed only if the asset is actually put to use during the financial year, and a vehicle used purely for personal purposes gets no depreciation claim at all. The car loan principal is never deductible; only the interest portion qualifies as a business expense, and the loan interest deduction is separate from the depreciation claim, so both can be claimed together where the car is genuinely a business asset.

Can You Claim an iPhone or Mobile Phone as a Business Expense?

Yes, if it's used for business, but not as a straight expense in the year you buy it. Mobile phones fall under the "plant and machinery" block of assets, and a 15% depreciation rate applies on the written-down value of that block. That means you write off 15% of the phone's value in year one, then 15% of what's left in year two, and so on, rather than deducting the full purchase price at once.

A few conditions decide whether the claim holds up:

• The phone must be used solely for business activities and purchased in the business's name, properly recorded as a fixed asset.
• When a mobile is used for both business and personal purposes, the depreciation has to be claimed proportionately, not in full.
• Depreciation claimed on a device billed to an employee's personal name instead of the business itself is a common reason claims get disallowed.
• Keep the original invoice. A missing invoice makes it impossible to verify the purchase date, which determines whether you get the full year's depreciation or the half-year rate.

So an iPhone bought for genuine business use, invoiced to the business, and used mainly for work, is a legitimate deduction, just spread across several years through depreciation rather than claimed in one go.

Business Travel Expenses: What's Deductible and What Isn't

Travel undertaken for business, client meetings, site visits, conferences, or sourcing trips, is deductible as a revenue expense as long as it's genuinely business-related and properly documented. Transportation and accommodation for business travel are recognised as legitimate work-related expenses that freelancers and consultants can claim.

The practical test is the same "wholly and exclusively" filter that governs every other deduction. A flight and hotel stay for a client meeting is deductible. A family vacation with a single client call squeezed in is not, and claiming it as one is the kind of expense that gets flagged in a scrutiny assessment. Keep invoices, boarding passes, and a note of the business purpose for every trip, since that's what a tax officer will ask for if the claim is questioned.

Freelancers and Professionals: Section 44ADA vs. Claiming Actual Expenses

If you're a freelancer, consultant, or specified professional (law, medicine, engineering, architecture, accountancy, technical consultancy, and similar fields), you have a choice between two approaches:

Option 1: Presumptive taxation under Section 44ADA. You declare 50% of your gross receipts as taxable income, available up to a turnover limit of ₹50 lakh, extended to ₹75 lakh if cash receipts are no more than 5% of total turnover. Once you opt for this, you cannot separately claim actual expenses like travel, rent, or equipment costs; the 50% deemed deduction is meant to cover all of it. No detailed books of account, and no tax audit, as long as you stick to the declared 50% or higher.

Option 2: The regular method. You maintain proper books, claim every actual expense with supporting invoices, and pay tax on the real profit. This tends to suit professionals with heavy equipment investments or high recurring costs, where actual expenses run well above 50% of receipts.

There's no universal right answer here. A freelance graphic designer working from a home office with minimal costs usually comes out ahead under 44ADA, since half their receipts are treated as tax-free "expenses" even if they didn't spend anywhere near that. A consultant who travels constantly and rents a proper office may end up paying less tax by claiming actual expenses instead.

The Personal Expenses Trap: Why This Is the Costliest Mistake

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This is where the "wholly and exclusively" rule bites hardest. Claiming a personal expense, family travel, personal clothing, a phone used mainly for personal calls, home groceries run through the business account, as a business deduction isn't a grey area. It's disallowed, and if it's caught, it's expensive.

Here's what actually happens: a disallowed deduction gets added back to taxable income, which increases the overall tax liability, and on top of that a penalty is imposed for misreporting. The penalty for under-reporting income runs to 50% of the tax on the amount involved, and for misreporting, where the disallowance stems from a false or unsubstantiated claim, it rises to 200% of the tax involved. Claiming unsubstantiated expenses, expenses with no receipts or invoices to back them, is explicitly called out as a form of under-reporting or misreporting. Interest under Sections 234B and 234C applies on top of that on the unpaid tax.

In practice, this means a business owner who claims, say, a family holiday as a "business trip" isn't just risking losing the deduction. They're risking the tax on that amount, a penalty of half to double that tax, and interest, all triggered by one line item that looked convenient at filing time.

Expenses That Are Always Disallowed

Regardless of how the expense is framed, a few categories are never deductible under Indian tax law:

• Personal expenses of the owner or proprietor, including clothing, personal travel, and household costs
• Capital expenditure (buying an asset outright, as opposed to depreciating it over time)
• Fines and penalties for breaking any law
• Payments connected to illegal activity, including bribes
• Corporate Social Responsibility (CSR) expenditure, explicitly excluded under the Explanations to the general deduction clause
• Income tax itself paid by the business, since tax paid is not a cost of earning business income

How to Document Business Expenses So They Hold Up

Deductions aren't automatically accepted just because they appear in your books. Keep:

• Original invoices and receipts, in the business's name where possible
• Bank statements or digital payment records showing the transaction
• A clear business purpose noted for anything that could plausibly be personal (travel, phone, vehicle)
• A logbook for any asset with mixed personal and business use, especially vehicles and phones
• Loan documents separating interest from principal, since only interest is deductible

If your accounts are audited under a tax audit requirement, this documentation feeds directly into Form 3CD, where the auditor has to report disallowable expenses. Weak documentation at that stage is what usually turns a routine claim into a disallowed one.

Conclusion

The rules for business tax deductions in India haven't changed in substance for 2026-27, but the law they live in has: you're now filing under the Income-tax Act, 2025, not the old Section 37. The test that decides almost every deduction is still the same, wholly and exclusively for the business, not personal, not capital, not illegal, and the categories that trip people up most (cars, phones, and travel) come down to one question: can you show, with documents, exactly how much of that expense was genuinely for the business?

If you're unsure whether a specific expense qualifies, the safest next step is to get it reviewed against your actual books before you file, rather than after a scrutiny notice arrives.

FAQ 

1. What business expenses are tax deductible in India?

Any revenue expense incurred wholly and exclusively for running your business or profession is deductible, including rent, salaries, interest on business loans, repairs, professional fees, advertising, and depreciation on business assets. Personal expenses, capital purchases, and illegal payments are excluded.

2. Is Section 37 of the Income Tax Act still applicable in 2026?

Not directly. The Income-tax Act, 1961, including Section 37, was repealed with effect from 1 April 2026 when the Income-tax Act, 2025 came into force. The same general deduction test now applies under Part F of the new Act, with the equivalent provision renumbered as Section 34. Assessments and returns for tax years before April 2026 continue to be governed by the old Section 37.

3. What is the "wholly and exclusively" rule?

It means an expense qualifies for deduction only if it was incurred entirely for the purpose of the business or profession, with no personal benefit mixed in. If an expense serves both purposes, only the business-use portion is deductible.

4. Can I claim my personal car as a business expense?

Only the portion used for business. If the car is used for both personal and business trips, running costs, loan interest, and depreciation must all be split proportionately, usually based on a logbook of business versus personal mileage.

5. How much car depreciation can I claim under income tax?

15% of the written-down value for a petrol or diesel car used for business (other than running it on hire), 30% for a vehicle used in the business of hiring it out, and 40% for an electric vehicle. If the car is used for less than 180 days in the year of purchase, only half the usual rate applies for that year.

6. Can I claim my iPhone as a business expense?

Yes, through depreciation rather than a one-time deduction. Mobile phones, including iPhones, are treated as "plant and machinery" and depreciated at 15% of written-down value per year, provided the phone is billed to the business and used for business purposes. If there's personal use too, the claim must be proportioned.

7. Is my mobile phone bill deductible if I'm self-employed?

Yes, if the phone is genuinely used for business. If it's used for both business and personal calls, only the business-use portion of the bill is deductible, and this should be reasonably apportioned rather than claimed in full.

8. Can freelancers claim travel expenses?

Yes, if they're not using presumptive taxation under Section 44ADA. Under the regular method, travel undertaken for client meetings, site visits, or business purposes is deductible with proper invoices. Under Section 44ADA, travel is already covered inside the deemed 50% expense allowance and can't be claimed separately.

9. What happens if I claim personal expenses as business expenses?

The claim gets disallowed and added back to your taxable income, increasing your tax liability. On top of that, a penalty applies under Section 270A: 50% of the tax on the disallowed amount for under-reporting, or up to 200% for misreporting where the claim was false or unsubstantiated, plus interest on the unpaid tax.

10. What is Section 44ADA and how does it work?

It's a presumptive taxation scheme for specified professionals (law, medicine, engineering, architecture, accountancy, technical consultancy, and similar fields) that lets you declare 50% of your gross receipts as taxable income, up to ₹50 lakh in receipts (₹75 lakh if at least 95% of receipts come through digital or banking channels). You skip detailed bookkeeping and a tax audit, but you also give up the right to claim actual expenses separately.

11. Can I choose actual expenses instead of the 44% presumptive rate under 44ADA?

You can opt out of Section 44ADA and use the regular method instead, claiming actual expenses with full books of account. This usually makes sense if your genuine business costs exceed 50% of your receipts. Note that switching back to presumptive taxation in later years can carry restrictions.

12. Is home loan interest a business expense?

Only if the property is genuinely used for business, such as a home office or workspace, and only to the extent of that business use. A home loan on a purely residential property used for personal living isn't a business deduction.

13. Can I claim clothing as a business expense?

No, in almost every case. Ordinary clothing, even if worn to work, is treated as a personal expense. The only narrow exceptions involve specialised protective or uniform clothing that has no personal use outside the business context.

14. What expenses are disallowed under the general deduction rule?

Personal expenses of the owner, capital expenditure, fines and penalties for breaking any law, payments connected to illegal activity, and CSR expenditure are all explicitly excluded, regardless of how business-related they might otherwise appear.

15. Is GST paid on business purchases a deductible expense?

If you're registered under GST and eligible to claim Input Tax Credit on that purchase, the GST portion isn't a deductible business expense, it's recovered separately through the ITC mechanism. If ITC isn't available on that purchase, the GST paid can typically be added to the cost of the item and treated accordingly.

16. Can a sole proprietor pay themselves a salary and claim it as a business expense?

No. A sole proprietorship and its owner are the same taxable entity, so a "salary" paid to yourself isn't a separate deductible expense; it's simply your business profit. This differs from a private limited company, where a director's salary is a genuine, deductible expense to the company.

17. What documents do I need to support a business expense claim?

Original invoices in the business's name, bank or digital payment records, a documented business purpose for expenses that could plausibly be personal, and a logbook for any mixed-use asset like a vehicle or phone.

18. Are fines and penalties ever tax deductible?

No. Fines and penalties imposed for breaking any law are specifically excluded from deduction, since they're treated as a consequence of non-compliance rather than a genuine cost of doing business.

19. Is depreciation the same as an expense I can deduct all at once?

No. Depreciation spreads the cost of an asset like a car, phone, or computer over several years, based on a fixed percentage of its written-down value each year, rather than letting you deduct the full purchase price in the year you buy it.

20. What's the difference between Section 44AD and Section 44ADA?

Section 44AD is presumptive taxation for eligible businesses (not professionals), where 6% to 8% of turnover is deemed as profit depending on whether receipts came through digital or cash channels. Section 44ADA is specifically for specified professionals, where 50% of gross receipts is deemed as profit. They apply to different categories of taxpayers and use different deemed-profit percentages.

21. Does the Income-tax Act, 2025 change deduction amounts or rates?

No. The reform is structural and linguistic, reorganising sections and simplifying language, not a change to tax rates, slabs, or the substance of what counts as a deductible business expense.

22. Can I claim a laptop as a business expense?

Yes, through depreciation on the relevant block of assets, provided it's used for business and properly recorded, similar to the treatment for mobile phones. Personal use requires proportioning the claim.