Tax basics for small businesses: sole proprietor, partnership firm, and company

When you start earning from your own business in India, one of the first questions is: what form should that business take? The three most common structures for small and growing businesses are sole proprietorship, partnership firm, and private limited company. Each has a different tax identity, different compliance burden, and different legal protection.

Sole proprietorship: you and the business are one

A sole proprietorship is the simplest form. There is no separate legal entity — you are the business. You run it under your own PAN or register a trade name, but the Income Tax Department sees it as your personal income from 'Profits and Gains of Business or Profession' (PGBP) under the Income Tax Act.

What you file

• ITR-3 or ITR-4 (if you opt for presumptive taxation under Section 44AD).
• You report business income on your personal return; the profit is added to your other income and taxed at your individual slab rates.
• No separate tax return for the 'business' — it is all under your personal PAN.

Tax rate

Individual slab rates apply: 0%–30% under the new or old regime, plus 4% cess. No separate corporate tax.

Liability and compliance

You are personally liable for all debts and obligations. Compliance is lighter: maintain books if turnover exceeds prescribed limits (currently ₹25 lakh for business, ₹50 lakh for profession, though exact limits should be verified), and get your accounts audited under Section 44AB if turnover crosses ₹1 crore (or ₹10 crore for certain businesses).

Partnership firm: shared ownership, separate tax entity

A partnership firm is formed by two or more partners under a partnership deed. It is a separate entity for tax purposes, with its own PAN. The Income Tax Act treats it as a distinct assessable unit.

What it files

• ITR-5: the firm files its own return and reports business income.
• The firm pays tax at a flat 30% (plus 4% cess) on its profits.
• Partners then report their share of profit (after firm-level tax) in their personal ITR-3 as 'income from firm' — but this distributed share is not taxed again at the partner level. Any salary or interest paid to partners by the firm is deductible for the firm and taxable in the partner's hands.

Tax rate

Flat 30% plus 4% cess on the firm's income. No slab benefit, no rebate.

Liability and compliance

Partners have unlimited joint and several liability. A partnership deed is required, and tax audit under Section 44AB applies if turnover exceeds limits (same thresholds as for individuals). The firm must also deduct TDS where applicable.

Private limited company: corporate shield, corporate tax

A private limited company is a separate legal person. It is incorporated under the Companies Act, has shareholders and directors, and pays corporate income tax. Owners (shareholders) are not personally liable for company debts beyond their shareholding.

What it files

• ITR-6: the company files a corporate return.
• Tax rate: for domestic companies with turnover up to ₹400 crore, a concessional rate of 25% plus 4% cess applies. Larger or certain other companies pay 30% plus cess (or opt for the lower 22% regime under Section 115BAA with conditions).
• Shareholders pay tax again when dividends are distributed (Dividend Distribution Tax was abolished; now dividends are taxable in shareholders' hands).

Compliance

Companies must maintain statutory books, hold board meetings, file annual returns with the Registrar of Companies (RoC), conduct mandatory audits regardless of turnover, and comply with the Companies Act and Income Tax Act. The compliance load is significantly higher, but the liability shield and fundraising flexibility often justify it.

Which structure is right?

If you are starting alone and want simplicity, sole proprietorship is the easiest path. If you have partners and expect moderate profits, a partnership firm gives you a shared structure with acceptable tax rates. If you plan to raise external funding, scale significantly, or want limited liability, a private limited company is the standard choice despite the heavier compliance.

There is no universal 'best' form. Tax is one factor; liability protection, fundraising, exit plans and compliance bandwidth are equally important. Many start as sole proprietors and convert to a company as they grow.

Key takeaways

• Sole proprietor: simplest, taxed at individual slab rates, personal liability.
• Partnership firm: separate PAN, flat 30% tax on firm profit, shared liability.
• Private limited company: corporate tax (25%/22%/30%), limited liability, heavy compliance.
• Your choice affects your tax return form, your tax rate, and your legal exposure.

Official sources

This explainer is based on official and primary sources. Always confirm figures and dates on these before acting:

• Income Tax Department — incometax.gov.in
• Central Board of Direct Taxes (CBDT), Department of Revenue
• Income Tax Act & Rules — incometaxindia.gov.in

Reviewed: October 2026. Tax rules change — verify the current financial year and assessment year before you rely on any figure.

This is general educational information for Indian taxpayers, not personalised tax, legal or financial advice. Union of Taxpayers is an independent platform and not a government body. Consider a qualified professional for your specific situation.