Short answer — several safe, convenient ways to invest in Indian mutual funds online. The main choices are:

• Directly on the Asset Management Company (AMC)’s website or app (e.g., SBI MF, HDFC MF, ICICI Prudential MF). Direct plans cost less (lower expense ratio) because there’s no distributor fee. (amfiindia.com)

• AMF/industry portals and RTAs (registrars): myCAMS / CAMS, KFin / KFintech, and MF Utilities (MFU) give access to many AMCs from one login and offer features like a Common Account Number (CAN). Good if you invest across multiple fund houses. (apps.apple.com)

• Third‑party aggregator / broker platforms (offer direct plans and easy UX): popular ones include Groww, Zerodha Coin, Kuvera, Paytm Money, ET Money and others. These let you open KYC, start SIPs, choose direct plans, set UPI/mandates and track portfolio. (Each has slightly different interfaces, fund coverage and additional services such as advice or demat holdings.) (groww.in)

Which option is “best” depends on you:

• If you want the lowest cost and can pick funds yourself → use AMC websites or a direct-only aggregator (Kuvera, Zerodha Coin, Groww support direct plans). (amfiindia.com)
• If you want one place to see many AMCs with consolidated features (CAN, consolidated statements) → use MFU / myCAMS / KFin. (mfuindia.com)
• If you want advice/robo‑advice or a friendlier UI (but possibly regular plans or paid advice) → choose an advisor platform (some aggregators also offer advisory). Check whether the platform is offering Direct plans (many do). (groww.in)

Quick how‑to (online):

1. Complete MF KYC (PAN + identity/address; many platforms support e‑KYC / video KYC/Aadhaar flows). Without KYC you cannot buy. (economictimes.indiatimes.com)
2. Decide direct vs regular plan — for DIY investors direct plans usually make sense (lower expense ratio). (amfiindia.com)
3. Choose platform (AMC site, myCAMS/MFU, or aggregator). Open account and link your bank / set up UPI mandate or eMANDATE for SIPs. (mfuindia.com)
4. Pick funds (check objective, expense ratio, AUM, fund manager, exit load, portfolio overlap). Start SIP or lump‑sum. Track via the platform and read scheme documents. (amc.ppfas.com)

Important tips & cautions

• Prefer direct plans if you don’t need continuous distributor advice — they’re cheaper and compound to better returns over time. (amfiindia.com)
• Check expense ratio, exit load, turnover, AUM and long‑term performance (past returns are not a guarantee). Read scheme documents and the risk disclosures. (amc.ppfas.com)
• KYC rules and tax rules have changed recently — capital gains tax depends on fund type (equity vs debt), holding period and recent budget changes, so confirm current tax rates before planning. If tax is important, consult a tax adviser. (economictimes.indiatimes.com)
• NRIs have special KYC / bank account rules (NRE/NRO, FATCA/FATCA disclosures); not all platforms/AMCs accept investors from every foreign country — check the AMC/platform’s NRI policy. (livemint.com)

If you want, I can:

• Recommend platforms (based on whether you prefer lowest cost, simplest UX, or consolidated view), or
• Walk you through step‑by‑step to open KYC and start a SIP on a specific platform (e.g., Groww, Zerodha Coin, Kuvera, myCAMS).

Which would you like?