ProductAug 8, 20263 min read

That ~4% APY on Kalshi cash is real. It is also not a savings account.

Idle balances and open positions can earn around 3.5–4%. Here is what that does — and what it does not do — to your edge.

Kalshi currently advertises roughly 3.5–4% APY on cash sitting in the account, including some open positions. That is a genuine advantage over crypto-only venues that pay nothing on USDC until you leave.

It does not make a bad trade good. A 4% yield on $1,000 is about $40 a year. One sloppy 50-contract loser is more than that in an afternoon.

Treat the APY as a reason to fund with ACH and leave a buffer, not as a reason to over-trade. The yield accrues while you wait for a pitch.

Rates change. The live figure is on Kalshi, not on this page. Recheck it when you size a longer-dated book.

That ~4% APY on Kalshi cash is real. It is also not a savings account.

Kalshi sign up is free. The screen still wants a real address.

Morocco, Nigeria and Israel can apply. Poland and Cuba cannot.

Polymarket vs Kalshi is the passport, read in either order.