The max Coins in Sol’s RNG appears to be 400,000 Coins for the Bank after upgrading it to level 7. That limit is reported in a recent bank-upgrade guide covering the Eon 1.15 update.

Quick Scoop

  • Bank level 1: 100,000 Coins.
  • Bank level 7: 400,000 Coins max.
  • The upgrade uses a Lucky Penny to increase capacity.

Small caveat

Some older or community posts mention different amounts, but the most current guide I found says the Bank caps at 400,000 Coins at max level.

TL;DR

If you mean the Bank storage limit , the max is 400,000 Coins.