What is a limit order on Kalshi?

A Kalshi limit order is an order with a price cap measured in cents (1¢–99¢): the most you'll pay to buy, or the least you'll accept to sell. Kalshi will fill it at your limit price or better, never worse. If your limit price can cross the current spread, it fills immediately as a taker against resting orders; if it can't, the remainder rests on the order book as a maker and waits for a counterparty. It's the default, price-controlled way to trade on Kalshi — you name the price, and the order either takes liquidity now or sits and waits, but it never pays more than you said.

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

A limit order sets the price; a market order sets the urgency. With a limit order you specify the worst price (in cents) you'll accept and Kalshi guarantees that price or better — but the trade-off is it might not fill, or only fill partially. A market order says 'fill me now at whatever the book offers' — it guarantees the fill (if there's liquidity) but not the price, so on a thin Kalshi market it can walk the book and fill at a much worse average price than you expected. Rule of thumb: limit order when price matters more than speed; market order when you need the position now and accept the spread.

How do I place a limit order on Kalshi?

On the market page, choose YES or NO, then select the limit (price) order type instead of market. Enter your limit price in cents — for a buy, the most you'll pay; for a sell, the least you'll accept — and the number of contracts. Kalshi shows the cost and max payout. Submit: if your price crosses the current best offer it fills right away; if not, it posts to the book as a resting order and waits. You can also check 'submit as resting order only' to force it to rest (post-only) and never take liquidity.

Why didn't my Kalshi limit order fill?

Because your limit price didn't cross the spread, so it's resting on the book waiting for a counterparty to come to your price. A limit order only fills instantly if your price meets an existing order on the other side; otherwise it sits passively. If the market never trades at your level, it stays open indefinitely. To fill now: raise your buy limit (or lower your sell limit) toward the opposite side of the book so it crosses, or switch to a market order. If you'd rather wait for your price, leave it — that's the limit order doing its job.

What price range can a Kalshi limit order use?

Kalshi contracts settle at $1.00 (100¢) if the event happens and $0 if it doesn't, so prices trade between 1¢ and 99¢ — and that price is also the market's implied probability (a 60¢ YES ≈ a 60% implied chance). Your limit price is set in that 1–99¢ range. Buying YES at 40¢ means you pay 40¢ for a contract worth $1 if it resolves yes; your max profit is 60¢ and your max loss is the 40¢ you paid. The cents you enter are simultaneously your price, your cost basis, and the implied odds.

TL;DR: A Kalshi limit order sets the worst price you'll accept, in cents (1¢–99¢). It fills instantly as a taker if your price can cross the spread, or rests on the book as a maker if it can't — it never pays worse than your limit. A market order, by contrast, takes whatever price the book offers. Text PJ — 858-461-8054.

Kalshi Limit Order — What It Is, How It Fills, and How It's Different From a Market Order

Q: Is a limit order the same as 'submit as resting order only' on Kalshi?

No — but they're related. A normal limit order CAN take liquidity: if your price crosses the spread it fills immediately as a taker, and only rests if it can't. 'Submit as resting order only' is an extra toggle on top of a limit order that forbids it from ever taking — it must rest as a passive (maker) order, and Kalshi rejects it if it would fill instantly. So: every resting-order-only order is a limit order, but not every limit order is resting-only. Use plain limit when you'll take the fill if it's there; use resting-order-only when you specifically want maker treatment and are willing to wait.

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TL;DR (operator-honest): A limit order is you naming the price. You set the worst price you'll accept — in cents — and Kalshi fills you at that price or better, never worse. If your price can cross the current spread, it fills right away as a taker. If it can't, the rest rests on the book as a maker and waits for someone to come to you. Upside: total price control. Downside: it might fill partially, or sit unfilled if the market never reaches your level. The opposite tool is a market order, which guarantees the fill but not the price.

A plain-English answer from a San Diego automation builder who trades Kalshi daily.

Quick Answer

A limit order caps your price. You set the most you'll pay (buy) or least you'll accept (sell), in cents from 1¢ to 99¢. Kalshi never fills you worse than that.
It fills now OR it rests. If your limit price crosses the spread, it fills immediately as a taker. If it can't, the unfilled part rests on the book as a maker and waits.
That cents value is also the odds. A 60¢ YES is a 60% implied probability, a 60¢ cost basis, and a 40¢ max profit — all at once.
vs market order: a limit order controls price (might not fill); a market order controls speed (fills now at whatever the book offers, which can be ugly on thin markets).

The Mechanic, In One Picture

Kalshi runs a CLOB (central limit order book). A limit order is the core tool on it: you submit a price and a size, and the matching engine checks whether your price can cross the spread. Say YES is bid 52¢ / ask 54¢. If you place a buy limit at 54¢ or higher, it crosses and fills immediately against the 54¢ ask — you're a taker. If you place a buy limit at 52¢, it can't cross (nobody's selling that low), so it rests as the new best bid and waits for a seller to hit it — you're a maker. Place a buy limit at 53¢ and you become the best bid inside the spread, still resting. The single rule: fill at your price or better, or wait. You will never accidentally pay 60¢ on a 54¢ ask with a limit order — that's exactly what limit orders protect against, and exactly what a market order does not.

	Limit order	Market order
You control	The price (in cents)	The urgency (fill now)
Fill guaranteed?	No — only at your price or better	Yes, if there's liquidity
Price guaranteed?	Yes — never worse than your limit	No — takes whatever the book offers
Risk on thin markets	Sits unfilled / partial fill	Walks the book, ugly average price
Maker or taker	Either — takes if it crosses, else rests	Always a taker
Best for	Patient entries at a price you like	Fills you can't afford to miss

Use a Limit Order When…

You have a specific price in mind and won't chase past it
The market's thin and a market order would walk the book
You want maker treatment (rest inside the spread)
You're entering patiently, hours before a sports/news event

Reach for a Market Order When…

You need the position now — final minutes, breaking news
You're hedging live exposure and can't risk a no-fill
The spread is tight enough that price slippage is trivial
You're closing near resolution and want certainty

1–99¢the price range a limit order lives in — also the implied odds

or bettera limit fills at your price or better, never worse

take / makecrosses the spread = taker · rests on the book = maker

"My Limit Order Won't Fill" — Why, and the Fix

The most common confusion: you place a limit order, and nothing happens. That's the order doing its job. A limit order only fills instantly if your price crosses the spread; if it doesn't, it rests and waits for a counterparty to come to your price. If the market never trades at your level, it sits open indefinitely — and if you only got a partial fill, the remainder is still resting. The fix depends on what you want: need it filled now? Raise your buy limit (or lower your sell limit) toward the other side of the book so it crosses, or switch to a market order. Happy to wait for your price? Leave it resting. For the full diagnostic on stuck orders, see Kalshi order not filled; for the post-only nuance, see what "submit as resting order only" means.

Limit vs Resting-Order-Only — the One That Trips People Up

These get conflated, but they're not the same. A normal limit order can take liquidity: if your price crosses the spread it fills immediately. "Submit as resting order only" is an extra checkbox layered on top of a limit order that forbids it from ever taking — it must rest as a passive maker order, and Kalshi rejects it outright if it would fill instantly. So every resting-only order is a limit order, but not every limit order is resting-only. Plain limit = "fill me at this price or better, taking or resting." Resting-only = "only rest, never take, even if you have to reject me." Use plain limit when you'll happily take the fill if it's sitting there; use resting-only when you specifically want maker treatment and will wait for it.

PJ · Encinitas, CA · 858-461-8054

AI automation for local businesses. No retainer. $100/hr.

I trade Kalshi daily and build trading automation — limit-order managers, fill monitors, post-only order routers, prediction-market data scrapers. If order types are costing you fills or money, text me. Real human, fast answer, no funnel.

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