Can I get a work experience certificate or proof for the four years of business I did after twelfth standard?

Yes, you can provide proof of your four years of business experience after twelfth standard, even if your business was not formally registered.

For a registered business, use documents like:
- Registration certificates
- Tax filings and GST returns (if applicable)
- Bank statements and invoices

For an unregistered business, alternatives include:
- Self-declaration or notarized affidavit describing your business, duration, and responsibilities
- Client testimonials or letters
- Financial records showing business transactions

While official certificates are stronger, these documents can help validate your experience.