Been looking into this for a project and figured I'd share what I found. Bank Mandiri is currently the biggest bank in Indonesia by total assets — it crossed Rp2,800 trillion by the end of 2025. Surprised a lot of people though, since BCA gets way more buzz because of its digital banking.

For what it's worth, BRI actually has stronger core capital, and BCA is still the top private bank if you're going by retail presence and app usage. So "biggest" kind of depends on what you're measuring. Anyone else looked into this recently? Curious if the rankings shift much once BSI's numbers come out too.