Start from liability
The first question is whether your business can generate debts or claims that would be painful to pay personally. A proprietorship and a partnership firm both carry unlimited personal liability. An LLP, OPC and Private Limited Company all limit it. If you hold inventory, take credit, sign meaningful contracts or employ people, limited liability is usually worth the compliance cost.
Then consider funding
Only a company can issue shares, preference instruments or ESOPs. Venture funds and angel investors, with rare exception, will not invest into an LLP or a partnership. If external equity funding is on your roadmap within two years, incorporate a Private Limited Company now rather than converting later at additional cost and tax complexity.
Weigh the compliance burden honestly
A Private Limited Company requires a statutory audit regardless of turnover, four board meetings a year, an AGM, MGT-7, AOC-4 and annual DIR-3 KYC. An LLP requires two annual filings and no audit below INR 40 lakh turnover. A proprietorship requires none of this. The gap in annual cost is significant for a small business.
Do not confuse company name with brand
MCA name approval checks other company names. It does not check trademarks. A company name can be approved and still infringe someone's registered mark, which means a rebrand after you have printed everything. Run the trademark search before you finalise the company name, not after incorporation.
A reasonable default
Services or consulting with partners and no funding plans: LLP. Solo founder wanting limited liability: OPC. Anything intending to raise capital or issue ESOPs: Private Limited. Testing an idea with minimal risk and cost: proprietorship, with a plan to convert.
Note: this guide is general information, not legal advice for your specific matter. Rules, fees and registry practice change. Before acting, speak to us about your situation.