How much to keep in a Plasma One balance
Plasma's line was clean: trade, deposit, spend. It is good product language. It is also where users can get sloppy.
A card balance should be money you expect to spend, not every stablecoin you own. The moment a trading balance becomes a card balance, it moves from investment or treasury thinking into grocery, travel and subscription thinking.
Use a bucket, not a pile
Keep a card bucket for near-term spending. Refill it when needed. That makes failed payments, refunds, limits and statement exports easier to understand. It also limits the damage if card details are exposed.
The product may make the loop feel seamless. That does not mean the whole balance belongs in the loop.
The tracked card details are on Plasma One Card.