Business expense categories and tax deductions for small businesses in India

A business expense is deductible when it is spent wholly and exclusively for the business, is revenue in nature, is not personal, and is not banned by a specific section of the Income Tax Act. Section 37(1) is the general rule; Sections 30 to 36 cover specific items like rent, repairs, interest and depreciation, and Sections 40 and 40A list what is disallowed. Get the categories right in your books and most of the tax work is already done.

The standard expense categories to use in your books

Use the same heads every month so your P&L is comparable and your CA does not have to reclassify. These are the categories that suit almost every small business in India.

Two habits make this table work. Record every expense with a voucher and the supporting bill, and record it in the month it belongs to, not when you happen to pay.

Section 37: the general rule and its four tests

Section 37(1) allows any expenditure that is (1) not covered by Sections 30 to 36, (2) not capital in nature, (3) not personal, and (4) laid out wholly and exclusively for the business or profession. Almost every ordinary expense (marketing, software, courier, staff tea) gets in through this door.

Explanation 1 to Section 37(1) adds the important exclusion: any expenditure for a purpose that is an offence or prohibited by law is not deductible. Explanation 3, added in 2022, extends this to expenses for any offence under any law in India or abroad, to benefits given in violation of any law or professional rule, and to compounding fees.

"Wholly and exclusively" does not mean the business must be the only beneficiary; it means the business purpose must be the reason for spending. A Pune freelance designer who attends a design conference in Goa can claim the fee, travel and stay. If she extends the trip for a holiday, the extra days are personal.

What is not deductible

Personal and household expenses. Home rent, groceries, children's fees, personal insurance, family travel. Booked from the business account, they are drawings.

Penalties and fines. Traffic challans, GST late fees, income-tax penalties, interest for late payment of income tax (Sections 234A/B/C), compounding fees. GST interest for late payment is compensatory and is often argued to be allowable; confirm with your CA before claiming.

Income tax and TDS on your own income. Advance tax and self-assessment tax are appropriations of profit, not expenses. Interest on income tax is not deductible either.

Cash payments above ₹10,000 (Section 40A(3)). Any expense paid in cash to one person in one day above ₹10,000 is disallowed in full, not just the excess. The limit is ₹35,000 for payments to transporters for plying, hiring or leasing goods carriages. Rule 6DD carves out a few exceptions (payments to government, payments on a bank holiday where no bank facility exists, and so on) but do not rely on them. Details are in cash transaction limits under income tax.

Expenses without TDS (Section 40(a)(ia)). If you were required to deduct TDS on a payment to a resident (contractor, professional, rent, commission) and did not, 30% of that expense is disallowed for the year. It comes back in the year you deduct and deposit. See the TDS guide for small business.

Provisions not backed by liability. A provision for "future repairs" or "possible bad debts" is not deductible. Actual bad debts written off are (Section 36(1)(vii)).

Statutory dues not paid in time (Section 43B). GST, PF and ESI (employer share), bonus, leave encashment and interest on bank loans are deductible only when actually paid, with grace up to the ITR due date. Employee PF and ESI contributions deducted from salary must be deposited by the statutory due date (15th of the next month), or they are disallowed permanently under Section 36(1)(va).

Payments to MSMEs beyond 45 days (Section 43B(h)). If you buy from a micro or small enterprise and pay after the MSMED Act deadline (45 days with a written agreement, 15 days without), the expense is deductible only in the year you actually pay. Read the MSME 45-day rule.

Capital expenditure. A machine, a vehicle, shop furniture, a computer, or a large renovation that increases the life or capacity of an asset. These are not expenses; they are depreciated.

Capital versus revenue: the question that trips everyone

The test is whether the spending creates or improves an asset with a life beyond the year (capital) or merely keeps the business running (revenue). Replacing a broken shutter lock is a repair; installing a rolling shutter where none existed is capital. Repainting the shop is revenue; adding a mezzanine floor is capital. Buying a ₹9,000 printer is technically capital, though many CAs expense small items on grounds of materiality; be consistent.

Software bought outright is an intangible asset (25% depreciation); a monthly SaaS subscription is revenue. A ₹3 lakh delivery van is capital; its fuel, insurance and servicing are revenue.

Depreciation basics under Section 32

Depreciation lets you deduct the cost of capital assets over time under the written-down-value (WDV) method, block-wise. Key rates under the Income Tax Rules (Appendix I):

Two rules matter. If an asset is used for less than 180 days in the year it is bought, only half the rate applies for that year. And depreciation is on the block, not the individual asset: a new computer is added to the 40% block, a sold one is subtracted, and the rate is applied to the net.

Worked example: a Bengaluru cloud kitchen buys a commercial refrigerator for ₹1,80,000 on 10 July 2026 and a laptop for ₹60,000 on 20 January 2027. Refrigerator: used more than 180 days, so 15% × 1,80,000 = ₹27,000 depreciation in FY 2026-27, closing WDV ₹1,53,000. Laptop: used less than 180 days, so half of 40% = 20% × 60,000 = ₹12,000, closing WDV ₹48,000. Next year the refrigerator gets 15% of ₹1,53,000 = ₹22,950 and the laptop 40% of ₹48,000 = ₹19,200.

Note that if you opt for presumptive tax under Section 44AD, depreciation is deemed to be included in the 8% or 6% profit and cannot be claimed separately, though the WDV still reduces notionally. See the presumptive taxation guide.

GST input tax credit on expenses

For a regular-scheme registered business, GST paid on business expenses is input tax credit, provided the supplier is registered, has filed GSTR-1 so the invoice appears in your GSTR-2B, you have the tax invoice, and you pay the supplier within 180 days. The mechanics are in input tax credit explained.

Section 17(5) blocks credit on several common expenses regardless of business use:

• Motor vehicles with seating up to 13 (including driver), plus their insurance, repairs and servicing, unless you are in the business of transport, driving training or vehicle resale. Goods carriers are not blocked.
• Food and beverages, outdoor catering, health and life insurance, club membership, beauty and fitness services (unless you are obliged by law to provide them to employees, or they are inputs for the same category of outward supply).
• Works contract and construction of immovable property, other than plant and machinery.
• Goods lost, stolen, destroyed, written off, or given as gifts or free samples.
• Goods and services used for personal consumption.
• Tax paid by composition dealers and under certain penal provisions.

Blocked GST is simply part of the expense for income tax. So a ₹1,000 team lunch with ₹50 GST is a ₹1,050 expense and no credit.

Keeping proofs the tax officer will accept

An expense without evidence is an expense the assessing officer can disallow. The standard of proof is not complicated.

• Tax invoice or bill of supply in the business name with GSTIN where applicable; for purchases above ₹5,000 from unregistered suppliers, at least a bill with name and address.
• Payment trail: bank, UPI or card for anything above ₹10,000; a numbered cash voucher signed by the receiver for small cash payments.
• For salaries: attendance sheet, salary register, bank transfer proof, PF/ESI challans.
• For rent: rent agreement, landlord's PAN (mandatory if annual rent exceeds ₹1 lakh for HRA purposes and for TDS under 194I above ₹6 lakh).
• For travel: tickets, hotel bills, a one-line note of the business purpose.
• For depreciation: purchase invoice of each asset and a fixed asset register with date of first use.

Keep originals or clear scans for at least six years after the end of the financial year for income tax, and for 72 months from the due date of the GST annual return under Section 36 of the CGST Act. Professionals covered by Rule 6F must keep books for six years. Cloud storage with a folder per month works; a shoe box does not.

Worked example: a Surat textile trader's month

Mehul trades in saree fabric in Surat under the regular GST scheme. His August 2026 expenses, and how they should be treated:

Total deductible revenue expense for the month: 25,000 + 44,000 + 9,800 + 6,000 + 17,700 + 1,200 = ₹1,03,700. Disallowed or excluded: ₹12,000 (cash), ₹2,000 (challan), ₹3,400 (personal). GST credit available: 4,500 + 1,080 + 1,530 + 216 = ₹7,326. The ₹12,000 cash mistake alone costs him tax on ₹12,000 for no reason.

Common mistakes

Paying big amounts in cash because the vendor asked. ₹10,000 per person per day is the wall. Use UPI or NEFT and you keep the deduction.

Claiming GST credit on the car, the team lunch and the client gifts. All blocked under Section 17(5); reversing later with interest is expensive.

Booking capital items as repairs. A ₹1.5 lakh air conditioner is not "electricity expense". It is plant and machinery at 15%.

Depositing employee PF a week late. The employee share becomes permanently disallowed. Pay by the 15th.

No vouchers for cash expenses. A ₹300 tea bill without a voucher is fine once; ₹4 lakh of "sundry expenses" without support is not.

Forgetting the 180-day rule. Assets bought in the second half of the year get only half the depreciation; plan large purchases before October if the deduction matters this year.

Ignoring 43B(h). A ₹2 lakh bill from a micro supplier left unpaid at 31 March beyond 45 days gets added back to your income.

How VyaparKit helps

VyaparKit does not prepare your tax computation, but it makes each expense traceable. Record every cash or bank payout on an expense voucher or payment voucher so there is a numbered, signed proof for the file. Enter supplier bills as a purchase bill with the ITC flag set correctly, and the blocked-credit items stay out of your GST report while the vendor ledger tracks what you still owe and for how long. The GST calculator helps you split a gross bill into taxable value and tax when the supplier's invoice is unclear.

Next steps

• Set up your expense heads in your books using the category table above and stick to them.
• Review last month's cash payments for anything above ₹10,000 to a single person in a day.
• Build a fixed asset register with purchase date, cost, block and rate for every asset you own.
• List your recurring expenses where GST credit is blocked so they are booked at gross.
• Read bookkeeping basics for small business for the monthly routine that keeps proofs in order.