Explore · The library

Every resource founders actually use, in one library.

The essays, videos, podcasts, books and tools behind every answer across eChai's hubs, from starting up to go-to-market, D2C, founder money and AI, each with a note on why it is here.

What founders use most, ranked by how many answers lean on it.

  1. A state-by-state overview of the shop and establishment licence: it is needed within 30 days of starting business, goes by... cashfree.com Article · Starting Up Shop and Establishment Act Registration in India: License, Process and Fees (2026) Cashfree Payments
  2. The official manual for the e-invoice portal: registering, generating and cancelling IRNs, and bulk generation. einvoice1.gst.gov.in Article · Starting Up E-Invoice System: User Manual for Taxpayers National Informatics Centre
  3. The Finance Ministry's 3 September 2025 release on GST 2.0: two main rates, 18% standard and 5% merit, a 40% rate for a few... pib.gov.in Article · Starting Up Recommendations of the 56th Meeting of the GST Council Press Information Bureau
  4. A current rate list under GST 2.0, with which goods and services moved to 5% and 18% from 22 September 2025. cleartax.in Article · Starting Up GST Rates 2026: Slabs under GST 2.0 ClearTax
  5. A current rate table for 2026-27 that notes all TDS provisions now sit in section 393 of the Income-tax Act 2025, with... cleartax.in Article · Starting Up TDS Rate Chart for FY 2026-27 ClearTax
  6. An explainer of how TDS works for a payer: deposit by the 7th of the following month and quarterly statements due 31 July, 31... cleartax.in Article · Starting Up TDS: What is Tax Deducted at Source ClearTax
  7. A step-by-step walk through the online and offline TAN application, useful for the screens; its form numbers and penalty refer... cleartax.in Article · Starting Up How to Get a TAN Number ClearTax
  8. The Ministry of MSME's own note on what Udyam registration gives an enterprise, in English and 22 other Indian languages. udyamregistration.gov.in Article · Starting Up Benefits of taking Udyam Registration Office of DC (MSME)
  9. DPIIT's own report on Gujarat, ranked a Best Performer: the Scheme for Assistance to Startups/Innovation under the Gujarat... startupindia.gov.in Article · Starting Up States' Startup Ecosystem Ranking, 5th edition: Gujarat state report Startup India (DPIIT)
  10. A plain explainer of who can apply to the Gujarat scheme through a nodal institute such as GUSEC: a startup registered in... startupgrantsindia.com Article · Starting Up Startup Gujarat Scheme through GUSEC (StartupGrantsIndia) StartupGrantsIndia
  11. The Gujarat scheme's assistance listed item by item: sustenance allowance, seed support up to Rs 30 lakh, accelerator... taxguru.in Article · Starting Up Subsidies for Startups in Gujarat TaxGuru
  12. A June 2026 report on Gujarat's proposed Industrial Policy 2026 and what it would change for startups. english.gujaratsamachar.com Article · Starting Up Industrial policy 2026: Gujarat announces sweeping incentives for industry and startups Gujarat Samachar
  13. The Patent Office's statement of what can be patented: an invention that is novel, has an inventive step, is capable of... ipindia.gov.in Article · Starting Up Basics of Patents (IP India) Office of the CGPDTM
  14. The statutory patent fee schedule, with a column for natural persons, startups, small entities and educational institutions and... ipindia.gov.in Article · Starting Up The First Schedule: patent fees (IP India) Office of the CGPDTM
  15. The Patent Office's own description of filing: Form 1 with Form 2 as a provisional or complete specification, the complete... ipindia.gov.in Article · Starting Up Patents: Filing Process (IP India) Office of the CGPDTM
  16. A guide to when each patent fee falls due, including the request for examination deadline cut to 31 months for applications... intepat.com Article · Starting Up Patent Cost in India (2026): Official Fees and Charges Intepat
  17. MeitY's November 2025 release on the notified DPDP Rules: an 18-month phased timeline and standalone, clear consent notices... pib.gov.in Article · Starting Up Government notifies DPDP Rules to empower citizens and protect privacy Press Information Bureau
  18. The Ministry of Consumer Affairs' release on the e-commerce rules: what every e-commerce entity must show before purchase and... pib.gov.in Article · Starting Up Consumer Protection (E-Commerce) Rules, 2020 Press Information Bureau
  19. Atlassian's guide to a lean PRD: goals, assumptions, user stories, design, and what is out of scope, written with the team... atlassian.com Article · Starting Up Product requirements documents (Atlassian) Atlassian
  20. The scheme's own FAQ, which sets out what a startup could get through an incubator: up to Rs 20 lakh as a grant for proof of... seedfund.startupindia.gov.in Article · FAQ page · Starting Up Startup India Seed Fund Scheme: FAQs DPIIT, Government of India
  21. The scheme document for Fund of Funds 2.0, a Rs 10,000 crore corpus that SIDBI puts into SEBI-registered Alternative Investment... startupindia.gov.in Article · Scheme document (PDF) · Starting Up Startup India Fund of Funds 2.0 Scheme DPIIT, Government of India
  22. Sets out the three margins with their formulas (gross profit margin, operating profit margin and net profit margin, each as... corporatefinanceinstitute.com Article · ~10 min read · Starting Up Profit Margin: Definition, Formula, Types and Examples Corporate Finance Institute
  23. Explains the ROI formula, works an example, shows how to annualise ROI so investments of different lengths compare fairly, and... corporatefinanceinstitute.com Article · ~10 min read · Starting Up Return on Investment: Formula, Meaning, and How to Calculate It Corporate Finance Institute
  24. A product seller's guide to gross, operating and net profit margin with the formula for each and ways to raise them, linked to... shopify.com Article · ~12 min read · Starting Up Profit Margin: How to Calculate It and Raise It Shopify

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