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JASMINE KAUR HUDA

Chartered Accountant

Published on: Mar 27, 2026

Common Income Tax Mistakes Small Businesses Make (India)

Experience managing sales, vendors, staff and compliance with cash flow in the course of running a small business in India is incredibly different than what it was 10 years ago. With all of these responsibilities competing for your time, income tax compliance can easily slip from your mind. Unfortunately, the results of small mistakes in income tax compliance can be very costly, including sizable penalties and disallowances, as well as unwanted notices. The following is a more in-depth, practical guide.

1. Mixing Personal and Business Expenses

One of the most common errors in proprietorships and partnerships is using the same bank account for personal and business transactions.

Why it’s risky:

  • Personal expenses get debited to P&L.
  • Genuine business expenses get questioned.
  • Difficulty during assessment proceedings.

Practical Tip:

Maintain:

  • Separate bank account
  • Separate credit card
  • Clear capital drawings entries

2. Ignoring Section 40A(3) – Cash Payments Above ₹10,000

Under Income Tax Act, 1961, cash payments exceeding â‚ą10,000 in a single day to a single person are disallowed under Section 40A(3).

Common mistake:

Small traders pay suppliers in cash for convenience.

Consequence:

Entire expense becomes disallowed → Higher taxable income.

Solution:

  • Use banking channels (NEFT/RTGS/UPI)
  • Maintain proper payment trail

3. Not Deducting TDS Properly

Many businesses either:

  • Forget to deduct TDS
  • Deduct but do not deposit on time
  • Deduct at wrong rate

Relevant provisions:

  • Section 194C (Contractors)
  • Section 194J (Professional Fees)
  • Section 194H (Commission)
  • Section 194I (Rent)

Impact:

Under Section 40(a)(ia), 30% of the expense can be disallowed.

Additionally:

  • Interest under Section 201(1A)
  • Late fee under Section 234E
  • Penalty proceedings

4. Choosing the Wrong Presumptive Scheme

Many small businesses opt for presumptive taxation without proper evaluation.

  • Section 44AD – For businesses
  • Section 44ADA – For professionals

Common mistakes:

  • Claiming lower profit without audit.
  • Ignoring turnover limits.
  • Not paying advance tax (100% by 15th March under 44AD/44ADA).

This leads to interest under Section 234B & 234C.

5. Not Paying Advance Tax

If tax liability exceeds â‚ą10,000, advance tax is mandatory.

Many small business owners assume:

“We will pay at the time of return filing.”

This leads to:

  • Interest under Section 234B
  • Interest under Section 234C

Advance tax planning is crucial, especially for growing businesses.

6. Claiming Ineligible Expenses

Common wrongly claimed expenses:

  • Personal car expenses (without log book)
  • Household electricity
  • Personal travel
  • Income tax payment (not allowed as expense)

Remember: Only expenses incurred “wholly and exclusively” for business are allowed.

7. Not Maintaining Proper Books of Accounts

Even small businesses are required to maintain books under Section 44AA if turnover crosses prescribed limits.

Common issues:

  • No stock records
  • No expense vouchers
  • No reconciliation with GST returns

During scrutiny, absence of books may result in estimated income addition.

8. Ignoring GST–Income Tax Reconciliation

Mismatch between:

  • GST turnover
  • Income tax turnover
  • GSTR-1 vs P&L revenue

This is a common trigger for notices today.

Authorities increasingly cross-verify GST data with income tax filings.

9. Late Filing of Income Tax Return

Late filing results in:

  • Late filing fee under Section 234F
  • Interest on tax payable
  • Loss of ability to carry forward losses
  • Risk of defective return notice

Small businesses often delay filing due to cash flow or incomplete books.

10. Improper Depreciation Claims

Common mistakes:

  • Claiming depreciation on land
  • Claiming 100% depreciation incorrectly
  • Not following block of assets concept
  • Not adjusting sale of asset properly

Incorrect depreciation affects profit computation significantly.

11. Not Structuring Salary/Remuneration Properly (LLP & Firms)

In LLPs and partnership firms:

  • Remuneration must be authorised by LLP agreement.
  • Limits prescribed under Section 40(b) must be followed.

Many businesses either:

  • Don’t draft proper clauses.
  • Pay excess remuneration leading to disallowance.

12. Ignoring FEMA & NRI Tax Implications

In case of:

  • Foreign partners
  • Export income
  • Payments to non-residents

Compliance under FEMA and TDS provisions is mandatory. Non-compliance can attract heavy penalties.

Conclusion

The reason a small business does not make it is not due to taxes — it is due to avoidable mistakes in compliance. Tax planning is not about avoiding taxes. It is about: Selecting an appropriate business structure Staying disciplined in your approach Budgeting accurately for cash flows Conducting a quarterly review of your compliance. 

  

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