Short answer: there’s no single “best” — it depends on what you want (highest return, gifts/insurance, Sharia compliance, guaranteed payout, or widest branch/ATM coverage). Below are the top children’s/minor accounts in Sri Lanka by common priorities and why you might pick each one (sources included).

Top picks

• Bank of Ceylon — Ran Kekulu Smart: strong package for minors that often includes higher interest than regular savings, medical/parent life insurance and Grade‑5 scholarship rewards; good if you want insurance/scholarship benefits and a large national bank. (boc.lk)
• Hatton National Bank (HNB) — Singithi / Singithi Lama: gift schemes, birthday gifts and staged benefits for different ages; good if you want frequent gifts and a structured age-based program. (hnb.net)
• Commercial Bank — Arunalu / Isuru Minors’ Savings (and Isuru deposit schemes): low minimums, regular-deposit and lump-sum guaranteed plans (Isuru) that suit parents wanting predictable maturity payouts. (combank.lk)
• Amana Bank — Amana Kids: Sharia-compliant (profit‑sharing) children’s account with monthly profit payouts and promotional gifts — good if you prefer Islamic banking. (amanabank.lk)
• Cargills Bank — Podihitiyo: competitive tiered interest rates on minor savings (higher yields at larger balances); good if your priority is higher interest on deposited balances. (cargillsbank.com)

Quick guidance to pick the best one for your child

• Want insurance/extra benefits and wide branch network: consider Bank of Ceylon or People’s Bank. (boc.lk, peoplesbank.lk)
• Want guaranteed maturity/structured savings: look at Commercial Bank’s Isuru and Nations Trust investment plans. (combank.lk, nationstrust.com)
• Need Sharia-compliant profit sharing: Amana Bank. (amanabank.lk)
• Want higher interest on larger balances: Cargills Bank’s Podihitiyo currently advertises competitive tiered rates. (cargillsbank.com)

Practical next steps

• Decide your priorities (returns vs. insurance/gifts vs. Sharia compliance vs. guaranteed payout).
• Check the current rates, minimums, fees and promotional benefits on the bank’s website or at a branch before opening — product features and rates change frequently. (I used the banks’ product pages to prepare this summary; you should confirm current terms with the bank.) (boc.lk, hnb.net, combank.lk, amanabank.lk, cargillsbank.com)

If you tell me the most important factor for you (interest, guaranteed payout, insurance/gifts, Sharia, or branch/digital convenience), I’ll recommend the single best option and outline exactly how to open the account.