Question 1

What order types does Kalshi have?

Accepted Answer

Kalshi runs a central limit order book (CLOB), so the core order types are: a MARKET order (fills now at whatever the book offers — takes liquidity, guarantees the fill not the price), a LIMIT order (sets a price cap in cents — fills at your price or better, or rests on the book), and the 'submit as resting order only' toggle (post-only / maker-only — forces a limit order to rest and never take liquidity). On top of those, the practical 'order behaviors' people search for are why an order won't fill, why it pends, cancel-vs-edit, and price moving before a fill.

Question 2

What's the difference between a market and limit order on Kalshi?

Accepted Answer

A market order controls speed (fill now at the book's price, guaranteed fill, no price control — and it can walk the book on a thin market = slippage). A limit order controls price (set the worst cents you'll accept, guaranteed price-or-better, but it might not fill or only fill partially). Market for urgency; limit for price control.

Question 3

What does 'submit as resting order only' mean on Kalshi?

Accepted Answer

It's the post-only / maker-only toggle: your limit order may ONLY be placed if it rests on the book and adds liquidity. If your price would fill instantly (cross the spread), Kalshi rejects it instead of filling. Use it for patient maker entries; never when you need a guaranteed fill.

Order type	What it does	Best for
Market	Fills now at the book's price (takes liquidity) — guaranteed fill, not price	Urgency; liquid markets
Limit	Caps your price in cents — fills at your price or better, or rests	Price control; thin markets
Resting-order-only	Post-only — must rest as a maker, rejected if it would take	Patient maker entries

Kalshi Order Types, Explained — The Full Operator Map

The three order types

When an order misbehaves (the fixes)

Trading Kalshi and the order types are costing you fills or money?