Business Expenses Disallowed for Income Tax and Deductions Allowed Only on Payment

Not every amount recorded as a business expense is deductible in computing taxable profits. Indian income-tax law restricts certain expenses because of their nature, the payee, the method of payment or failure to meet statutory deadlines. Other expenses are deductible only when actually paid.

1. General test for deductibility of business expenditure

Ordinary business expenditure is generally deductible when it is incurred wholly and exclusively for business or professional purposes, is revenue rather than capital or personal in nature, and is not prohibited by a specific provision. The general deduction rule was contained in section 37 of the 1961 Act. Specific disallowance provisions override the general rule.

2. Expenses that may be disallowed

Failure to deduct or deposit tax at source (TDS)

Under former section 40(a)(ia), 30% of a resident-payee expense subject to TDS could be disallowed where tax was not deducted or, after deduction, was not paid by the prescribed return-filing due date. The disallowed portion was generally deductible in the year of subsequent TDS payment. Payments to non-residents covered by former section 40(a)(i) could attract disallowance of the relevant sum, subject to statutory conditions and relief provisions. This may affect interest, royalty, technical fees, rent, commission and contract payments, depending on the applicable TDS rule.

Official reference: Amounts not deductible under section 40.

Income tax, surcharge and related amounts

Income tax on business profits is not an ordinary deductible business expense. Statutory restrictions also apply to specified tax-related payments. Interest and penalties require examination under the applicable provision and their legal character; they should not automatically be treated as deductible merely because they were charged to the business.

Wealth tax: historical provision

Older law contained restrictions relating to wealth tax. Wealth tax was abolished from assessment year 2016-17; it should not be presented as a recurring current business tax. Historical assessments must be considered under the law applicable to the relevant year.

Employee welfare funds and contributions

Employer contributions to recognised or approved provident, superannuation, gratuity and other eligible funds are subject to their respective conditions. Contributions to unapproved funds may be disallowed. Employees' contributions deducted from wages are subject to distinct deposit deadlines and should not be confused with the employer's contribution rules.

Advertisements in political party publications

Expenditure on advertisements in souvenirs, brochures or similar publications issued by political parties is specifically restricted under the historical disallowance provisions, even if the payment is described as promotional expenditure.

Excessive payments to related or specified persons

Former section 40A(2) allowed the tax authority to disallow the excessive or unreasonable portion of expenditure paid to specified persons, having regard to fair market value, legitimate business needs and the benefit derived. Specified persons may include relatives, directors, partners and persons with substantial business interests, depending on the taxpayer's constitution.

Cash and other non-prescribed payment modes

Under former section 40A(3), payment or aggregate payments to one person on one day exceeding Rs. 10,000 for deductible expenditure were generally disallowed if made otherwise than through prescribed banking or electronic modes. The threshold was Rs. 35,000 for payments for plying, hiring or leasing goods carriages. Prescribed exceptions, historically under Rule 6DD, could apply. The old Rs. 20,000 general limit is no longer the applicable historical threshold for recent years.

If a liability was deducted in an earlier year and later settled through a prohibited payment mode, former section 40A(3A) could bring the amount back into taxable business income. See the Income Tax Department guidance on cash transactions.

Illegal expenditure, offences and penalties

Expenditure incurred for a purpose that is an offence or prohibited by law is not deductible under the general business-expense rule. Penalties for statutory violations must be distinguished from genuine compensatory payments, with the legal nature of the liability determining treatment.

Other specifically restricted amounts

Additional restrictions historically included certain gratuity provisions, payments towards unapproved employee-benefit arrangements and specified contingent or mark-to-market losses. The precise treatment depends on the statutory conditions and the tax year.

3. Expenses deductible only on actual payment

Former section 43B overrode ordinary accrual accounting for specified liabilities. Most listed liabilities were deductible if actually paid during the year or, subject to conditions, by the due date for filing the return. Delayed payments to qualifying micro and small enterprises are an important exception: the general return-filing due-date extension does not apply to the delayed-payment category.

Official reference: Section 43B: deductions on actual payment. Conversion of specified unpaid interest into a fresh loan, debenture or similar instrument does not necessarily constitute actual payment.

4. Special rule for payments to micro and small enterprises

Under the historical section 43B(h) framework, a buyer's deductible expense for goods or services supplied by a qualifying micro or small enterprise could be deferred if payment was made after the deadline under section 15 of the Micro, Small and Medium Enterprises Development Act, 2006. The ordinary return-filing due-date relaxation did not cure a late MSME payment.

• Without a written payment agreement: payment is generally due within 15 days from the statutory day of acceptance.
• With a written agreement: the agreed period cannot exceed 45 days from the statutory acceptance date.
• Deduction: where the relevant deadline is breached, the deduction is generally available in the year of actual payment, subject to the applicable legislation and supplier eligibility.

See the Income Tax Department's MSME tax guide and the Ministry of Micro, Small and Medium Enterprises.

5. Practical compliance checklist

1. Identify the applicable tax year and use the Income-tax Act and Rules in force for that period.
2. Check whether an expense is personal, capital, prohibited or expressly disallowed.
3. Verify TDS applicability, deduction, payment dates and supporting certificates.
4. Review payments to related parties against market value and business purpose.
5. Use permitted banking or electronic modes for payments subject to restrictions.
6. Reconcile statutory dues, employer contributions, bonus, interest and leave encashment with actual payment evidence.
7. Track eligible micro and small enterprise invoices separately against statutory due dates.

6. Official legislation and guidance

• Income-tax Act, 2025 (official consolidated text)
• Government announcement: Income-tax Act, 2025 in force from 1 April 2026
• Income Tax Department: business deductions and restrictions
• Section 40A of the Income-tax Act, 1961 (historical reference)

This article provides general information and does not replace tax advice based on the applicable tax year, taxpayer facts and current legislation.