🧮 Free Tool · Kalshi BTC 15-Minute

Kalshi Fee and Breakeven Calculator for BTC 15-Minute Contracts

DegenHedge Research · Fee rule checked October 6, 2026 · Runs in your browser · A calculator, not betting advice

Short answer

Kalshi charges takers 0.07 × contracts × price × (1 − price), rounded up to the next cent for the order. On one contract that is 2¢ at 50¢ and 1¢ at 99¢. Your breakeven win rate is what you pay, fee included, divided by the $1 a winning contract returns. A one-contract order at 99¢ has a breakeven of 100%: it cannot come out ahead even when it wins.

Price per contract (¢)

Contracts

Order type

$0.01

Kalshi fee

1¢ per contract

$0.97

Total cost

1 × 96¢ + fee

97.00%

Breakeven win rate

before fees: 96.0%

$0.03

If it wins, you make

-$0.97

If it loses, you lose

32.3

Wins to cover one loss

wins at this price to cover one loss

Checking Kalshi's live series record for KXBTC15M…

Assumes a standard retail Kalshi account, one fill per order at the price you enter, and the series multiplier Kalshi lists (1 for KXBTC15M). Real fills can come in at several prices, and Kalshi carries any rounding overpayment across the fills of one order, so a split order can pay slightly less than shown.

How the fee and breakeven are worked out

One formula, one rounding rule, and arithmetic you can check by hand.

The fee. Kalshi's published fee schedule sets the taker fee as round up(0.07 × C × P × (1 − P)), with C the number of contracts and P the price in dollars. Kalshi computes it to a millionth of a dollar, then rounds the order up to the next whole cent for retail accounts (fee rounding docs).
Maker orders. Kalshi applies maker fees only to series it lists for them. As of our October 6, 2026 check, Kalshi's public series record for KXBTC15M shows fee type "quadratic" with multiplier 1, the standard taker-only schedule, so a resting limit order that gets filled pays no fee here. The calculator re-checks that record each time it loads and warns you if it has changed.
Breakeven. A winning contract pays $1.00. Breakeven win rate = (contracts × price + fee) ÷ (contracts × $1). Before fees it is simply the price: a 96¢ contract has to win 96% of the time.
Sub-cent prices. Kalshi's API lists this series with tenth-of-a-cent ticks below 10¢ and above 90¢, and whole cents in between. Enter 96.5 and the calculator uses 96.5¢; enter 55.5 and it rounds to 56¢.

Fee and breakeven at common prices

Price	Fee, 1 contract	Breakeven, 1	Fee per contract, 10	Breakeven, 10	Fee per contract, 100	Breakeven, 100
50¢	2¢	52.00%	1.80¢	51.80%	1.75¢	51.75%
60¢	2¢	62.00%	1.70¢	61.70%	1.68¢	61.68%
70¢	2¢	72.00%	1.50¢	71.50%	1.47¢	71.47%
80¢	2¢	82.00%	1.20¢	81.20%	1.12¢	81.12%
85¢	1¢	86.00%	0.90¢	85.90%	0.90¢	85.90%
90¢	1¢	91.00%	0.70¢	90.70%	0.63¢	90.63%
92¢	1¢	93.00%	0.60¢	92.60%	0.52¢	92.52%
94¢	1¢	95.00%	0.40¢	94.40%	0.40¢	94.40%
95¢	1¢	96.00%	0.40¢	95.40%	0.34¢	95.34%
96¢	1¢	97.00%	0.30¢	96.30%	0.27¢	96.27%
97¢	1¢	98.00%	0.30¢	97.30%	0.21¢	97.21%
98¢	1¢	99.00%	0.20¢	98.20%	0.14¢	98.14%
99¢	1¢	100.00%	0.10¢	99.10%	0.07¢	99.07%

Taker orders, one fill per order, standard retail account, series multiplier 1. Breakeven = (contracts × price + fee) ÷ contracts, as a percent of $1. Maker orders on KXBTC15M pay no fee, so their breakeven is the price.

What our own record shows at each price

A breakeven only matters next to how often contracts at that price actually won.

These are signals our BTC 15-minute feed sent, priced at the live Kalshi ask when each fired and graded on Kalshi's official result. Across all of them the feed won 91.21% at a 91.74¢ average entry, 0.53 points under breakeven before fees. "Within chance" means the gap between win rate and price is smaller than sampling noise, judged with a correction for testing ten price ranges at once.

Entry price	Signals	Won	95% range	Avg price = breakeven before fees	Breakeven after 1-contract fee	Read
79¢ or less	1,369	66.1%	63.6 to 68.6	68.8%	70.8%	Below its price, within chance.
80-85¢	772	83.5%	80.8 to 86.0	82.6%	84.0%	Above its price before fees, below it after a one-contract fee; within chance.
86-89¢	743	85.7%	83.0 to 88.1	87.6%	88.6%	Below its price, within chance.
90-92¢	1,039	88.5%	86.4 to 90.3	91.0%	92.0%	Below its price by more than chance explains.
93-94¢	916	94.9%	93.2 to 96.1	93.6%	94.6%	Above its price, within chance.
95¢	525	93.3%	90.9 to 95.2	95.0%	96.0%	Below its price, within chance.
96¢	809	96.7%	95.2 to 97.7	96.0%	97.0%	Above its price before fees, below it after a one-contract fee; within chance.
97¢	898	97.5%	96.3 to 98.4	97.0%	98.0%	Above its price before fees, below it after a one-contract fee; within chance.
98¢	1,649	97.6%	96.8 to 98.3	98.0%	99.0%	Below its price, within chance.
99¢	2,817	99.0%	98.6 to 99.3	99.0%	100.0%	At breakeven before fees; a one-contract fee makes breakeven 100%.

Our Kalshi BTC 15-minute feed, March 24 to October 4, 2026, priced at the live ask, graded on Kalshi's official result. "Within chance" uses a bar of 2.81 standard errors (a correction for ten price ranges). Source: breakeven-by-entry-price.csv.

Full method and the per-bucket fee-adjusted results are in our fees and breakeven study.

Common questions about Kalshi fees and breakeven

How is the Kalshi fee calculated on a BTC 15-minute contract?

Kalshi's published taker fee is 0.07 × contracts × price × (1 − price), with the price in dollars, computed to a millionth of a dollar and rounded up to the next cent for the order on a standard account. One contract costs 2¢ in fees at 50¢ and 1¢ at 99¢. A 100-contract order pays about 1.75¢ per contract at 50¢ and 0.07¢ at 99¢.

Do maker orders pay a fee on Kalshi BTC 15-minute markets?

Not as of our October 6, 2026 check. Kalshi charges maker fees only on series it lists for them, and its public series record for KXBTC15M shows fee type "quadratic" with multiplier 1, the standard taker-only schedule. The calculator re-checks that record when it loads and warns you if it changes.

What win rate do I need to break even on a 95¢ Kalshi contract?

95% before fees. On a one-contract order the fee is 1¢, so you need 96%. On a 100-contract order the fee is about 0.34¢ per contract, so you need about 95.34%.

Why can a 99¢ contract not make money on a one-contract order?

A 99¢ contract pays $1.00 if it wins, a 1¢ profit, and Kalshi rounds the fee on a one-contract order up to 1¢. Even a win nets nothing, and a loss costs $1.00 including the fee. Larger orders spread the rounding: at 100 contracts the breakeven is about 99.07%.

Does Kalshi charge a settlement fee on BTC 15-minute contracts?

Kalshi's published fee schedule, as we read it on October 4, 2026, says there is no settlement fee. Winning contracts pay $1.00 each. Fee schedules change, so check Kalshi's current schedule.

What does the record line in the calculator mean?

It is our own BTC 15-minute feed's graded result at that entry price, March 24 to October 4, 2026: how often signals in that price range won, against the price paid. Across all 11,537 signals the feed won 91.21% at a 91.74¢ average entry, below breakeven before fees. It describes the past; it does not predict a single window.

Sources

Kalshi fee schedule: kalshi.com/docs/kalshi-fee-schedule.pdf (formula as published; the PDF refused automated downloads on October 6, 2026, so the taker formula is as we read it on October 4, 2026)
Kalshi API documentation, fee rounding: docs.kalshi.com/getting_started/fee_rounding (read October 6, 2026)
Kalshi public series record for KXBTC15M, fee type and multiplier: api.elections.kalshi.com/trade-api/v2/series/KXBTC15M (checked October 6, 2026, and re-checked live by this page)
Our record by entry price: breakeven-by-entry-price.csv (frozen sample ending October 4, 2026)
Every window and graded signal behind it: huggingface.co/datasets/DegenHedge/kalshi-btc-15m (CC BY 4.0, v2026.10)

Fee schedules change. Check Kalshi's current schedule before relying on any figure here.

Watch it grade in real time

Free to read, free to check, and the paid feed is optional.

Every window, graded in public

Every signal in our BTC 15-minute feed goes into a public results log and a downloadable CSV, graded against Kalshi's official result, losses included, with nothing pulled.

Browse the results log → Free fee calculator →

There is also a paid BTC 15-minute live feed on Telegram: our model's read beside the live Kalshi price, about two minutes before each window closes, on most windows, around the clock. What it gives you is coverage and speed with every call graded in public, not a price advantage. Free for 30 days, then $4.99/mo →

Read this first. From March 24 to October 4, 2026 the feed won 91.21% of 11,537 graded signals at a 91.74¢ average entry, 0.53 points below breakeven before Kalshi's fee and further below after it. It is not a source of returns. Any single window can lose 100% of your stake. This is entertainment, not investment or betting advice.

This is a free trial that becomes an automatically renewing subscription. A payment card is required to start, and you are not charged today. Your trial runs 30 days. At the end of it your card is charged $4.99 and then $4.99 every month until you cancel. Cancel any time before the trial ends and you pay nothing: use your account page, send /manage in the bot, or email [email protected]. Cancelling later stops future renewals at the end of the current paid month and does not refund it. No refunds except as required by law. By starting a trial you authorize these recurring charges and agree to the Terms and Privacy Policy. Signals are informational and for entertainment only, are not financial or betting advice, and any single signal can lose 100% of your stake. Must be 18+ (some platforms require 21+). If gambling is a problem for you, call 1-800-GAMBLER.

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Risk reality: read before acting on anything here

These are 15-minute binary prediction-market contracts. Any single window can lose 100% of your stake. They settle on a 60-second index average, not on the exchange chart you may be watching. At high prices a loss costs many times what a win pays, and Kalshi's fee raises the win rate you need above the price. Nothing on this page is financial, investment, or betting advice.

Past performance does not guarantee future results. Trade only with money you can afford to lose. Must be 18+ or of legal age where you live. If gambling is a problem for you, call 1-800-GAMBLER.