By PredictQ Team // Updated: July 2026
Coinbase does not publish a fee schedule for Predict. Read that again, because it’s the single most important fact about trading on this platform. Every trade routes to Kalshi, Kalshi’s base fee applies underneath, Coinbase layers an undisclosed broker markup on top, and the only place you ever see the total is the trade confirmation screen. No breakdown, no formula, no published rates.
For traders who think in edges and fees, and that should be all of us, this is the platform’s defining tradeoff. The convenience of trading event contracts inside the Coinbase app is real. So is the fact that you’re paying more than the same trade costs on Kalshi direct, by an amount Coinbase declines to disclose.
Here’s everything actually known about the cost structure as of July 2026, with numbers.
What’s Confirmed
Five facts hold up:
- Every trade executes on Kalshi, so Kalshi’s base fee applies: 0.07 x contracts x price x (1-price) for takers, peaking at $1.75 per 100 contracts on a 50-cent market and shrinking toward zero at the price extremes.
- Coinbase adds its own broker fee on top. The amount isn’t published anywhere.
- The combined total is higher than Kalshi direct, full stop.
- User reports consistently show the markup biting hardest on small trades, which fits how fixed-component broker fees work everywhere.
- The preview screen shows one blended fee number with no split between Kalshi base and Coinbase markup.
A Worked Example
User reports give us a rough calibration. On a 10-contract order worth about $6.80, Kalshi direct would charge roughly $0.14 under its formula. The same order on Coinbase Predict has been reported around $0.20-$0.30 total.
That’s a 40-100% markup over the base fee. On one small trade, pennies. Across a season of trading, a second layer of vig you volunteered for. Larger orders dilute the markup as a percentage, so the damage scales inversely with your trade size.
Why Coinbase Charges More
No mystery here. Coinbase Financial Markets is a broker providing brokerage services: KYC, account management, support, and the app integration. Brokers charge for that. Small orders carrying proportionally heavier fees is the oldest pattern in retail brokerage.
The strategic read matters more: Coinbase isn’t competing on price and doesn’t need to. Its edge is distribution, tens of millions of funded accounts one tap from a prediction market. The fee premium is what you pay for never leaving the app. Whether that’s worth it depends entirely on how much you trade.
The Transparency Gap
Compare disclosure practices across the category and Coinbase stands alone:
- Kalshi publishes its full formula with worked examples
- Polymarket publishes per-category rates (sports 0.03, politics 0.04, crypto 0.07, and Geopolitics at 0%)
- OG.com publishes a flat $0.02 per contract to open, $0.02 to close early, $0 at settlement
- FanDuel Predicts states a flat 2% on payouts
- DraftKings Predictions publishes tiered pricing: $0.01 per contract at extreme prices, $0.02 in the $0.20-$0.96 range
- Coinbase Predict publishes nothing
You can’t model your expected costs in advance on Coinbase. You discover them one confirmation screen at a time. For anyone doing real volume, that alone is disqualifying.
Deposit Costs
Predict itself charges nothing on deposits. Getting money into Coinbase can cost you, depending on the rail: ACH is free (1-3 business days), debit cards have historically run 2-3% on Coinbase, incoming wires are free from Coinbase’s side though your bank may charge, and PayPal and Apple Pay are available in some regions. Once cash sits in your main USD/USDC balance, moving it to the predictions balance is free and instant.
Withdrawal Costs
Same story in reverse. Move funds from your predictions balance back to your main balance (free), then out: ACH is free at 1-5 business days, outgoing wires cost $25, crypto withdrawals pay network fees, and PayPal availability varies by region. Skip the wire unless you’re moving serious money; $25 against a $200 withdrawal is a 12.5% haircut.
Coinbase One Won’t Save You
Coinbase One ($4.99-$29.99/month) waives standard crypto trading fees up to $10,000 in monthly volume at its top tier. It does not touch Predict. Every event contract trade pays full freight regardless of your subscription. Plenty of users assume otherwise; don’t be one of them.
Cash-Out and Settlement
Selling before settlement is supported on most markets, with standard fees applying to the exit trade. Settlement runs automatically within about 24 hours of resolution, and payouts credit your predictions balance minutes later. Nothing unusual, no extra settlement fee.
How the Costs Compare
Approximate cost to trade 100 contracts at 50 cents, the most expensive point on the curve, across platforms as of July 2026:
- Coinbase Predict: $1.75 Kalshi base plus an undisclosed markup; user reports suggest $2-$3 total
- Kalshi direct: $1.75 max (taker), makers pay a quarter of that
- Polymarket sports: $0.75 max, with Geopolitics markets at $0
- Robinhood: commission capped at $0.01 per contract (roughly $1 per 100), Gold subscribers up to 50% less, exchange fees extra
- OG.com: $2 flat to open, $0 if held to settlement
- DraftKings Predictions: $2 at mid-range prices, $1 at the extremes
- FanDuel Predicts: 2% of payouts, so $2 on a $100 winning settlement and nothing on losses
- Traditional sportsbook: roughly $4.55 in implied vig at -110 both ways
Coinbase lands at or near the top of the regulated tier on cost, for access to an order book you could reach directly for less.
Keeping Your Costs Down
If you trade here anyway: size up your orders, since the markup punishes small trades most. Fund by ACH, withdraw by ACH, and never pay $25 for a wire you don’t need. Watch the preview screen fee on every trade until you have a feel for the markup. And run the honest comparison at least once: price the same trade on Kalshi and see what the convenience is costing you.
Bottom Line
The fee structure is where Coinbase Predict asks you to pay for its distribution advantage. Kalshi’s base fee plus a hidden markup, no published schedule, and the worst economics on exactly the small trades most new users make.
Casual trader, a few contracts a month, already living in the Coinbase app? The premium rounds to nothing; sign up HERE and enjoy the convenience. Trading real volume? The same order book is one account away at Kalshi, with a public fee schedule and no middleman. Vig is vig, even when it comes wrapped in a nice interface.
Disclosures: PredictQ may receive compensation when readers sign up for platforms through links on this page. Fee information accurate as of July 2026, based on published exchange schedules, user reports, and platform observations. Coinbase Predict does not publish a comprehensive fee schedule. Trading event contracts involves significant risk and is not appropriate for all participants. This content is for informational purposes only and does not constitute financial advice. Must be 18 or older. If you or someone you know has a gambling problem, call 1-800-GAMBLER.