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A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11Kalshi and Polymarket are not interchangeable betting apps. They are event-contract venues with different regulatory perimeters, account rules, currencies, market catalogs, fee disclosures, and settlement procedures. Kalshi operates a CFTC-regulated exchange in the United States. Polymarket has a U.S. product operated by QCX LLC (doing business as Polymarket US), also identified as a CFTC-designated contract market, while other Polymarket interfaces can have different jurisdictional rules.
For any trade, identify the exact entity and interface you are using, read that contract’s resolution rules, check the live fee information, and confirm how money enters and leaves the account. A familiar event question can settle differently on the two platforms.
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Kalshi vs. Polymarket at a glance
The right choice depends on the specific contract and your jurisdiction, not just on the platform name. This table summarizes the material differences established by current platform and regulatory documents.
| Comparison point | Kalshi | Polymarket |
|---|---|---|
| U.S. regulatory status | KalshiEX LLC has been a CFTC-designated contract market since November 3, 2020. Kalshi describes itself as a CFTC-regulated exchange operating under the Commodity Exchange Act. | QCX LLC, doing business as Polymarket US, has been a CFTC-designated contract market since July 9, 2025. Other Polymarket interfaces may not share the same legal perimeter. |
| Account controls | Kalshi says it uses full KYC, federal reporting, and surveillance. | Eligibility depends on the particular Polymarket interface, jurisdiction, and account rules. Verify those rules before depositing. |
| Contract currency and payout | Follow the individual product terms for funding, settlement currency, and payout timing. | Shares are priced from $0.00 to $1.00 in USDC. The correct outcome pays $1.00 USDC per share at resolution. |
| Counterparty | Use the exchange and clearing terms for the listed contract. | Another Polymarket user is the counterparty, rather than a house. Shares can generally be sold before the outcome is known, subject to market liquidity. |
| Fees | Kalshi publishes an exchange and clearinghouse fee schedule. Rates and effective dates must be checked on the live schedule. | Public documentation explains pricing and settlement but does not provide a complete, directly comparable numeric fee table. Costs can therefore be market- and time-specific. |
| Market restrictions | Kalshi says it does not list war, death, nuclear-war, assassination, kidnapping, rocket-explosion, or missile-strike markets. | Availability depends on the exact Polymarket product and jurisdiction. Read the market page and account terms. |
Neither platform removes the possibility of losing money. A regulated venue can have surveillance and enforcement obligations while the contracts themselves remain uncertain and potentially volatile.
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What each platform is, and which regulation actually applies
Kalshi’s U.S. exchange status
Kalshi’s policy center states: “Kalshi operates as a CFTC-regulated exchange under the Commodity Exchange Act.” A June 23, 2026 complaint from the U.S. Commodity Futures Trading Commission identifies KalshiEX LLC as a CFTC-designated contract market since November 3, 2020.
That status places listed contracts inside a federal derivatives-market framework. It does not mean every event is available, every user is eligible, or every trade is safe. Kalshi says its compliance program includes full know-your-customer checks, federal reporting, and market surveillance. Its catalog is also shaped by product rules and certification requirements. The Kalshi rulebook version dated August 17, 2026 is version 1.29; individual product pages can impose additional definitions and determination procedures.
Polymarket US is not the same thing as every Polymarket interface
The same CFTC complaint identifies QCX LLC, doing business as Polymarket US, as a CFTC-designated contract market since July 9, 2025. That is a statement about the U.S. product and its operator. It should not be generalized to every Polymarket web address, app, or account path.
Before depositing, check the legal entity named in the interface’s terms, the country or state restrictions, the identity-verification requirements, and the available funding and withdrawal methods. A person who can view a market page is not necessarily permitted to trade it. Eligibility can also differ between a U.S. product and another interface using the Polymarket name.
What “regulated” does and does not tell you
- It does indicate a formal supervisory perimeter. Designated contract markets have operating, reporting, and surveillance obligations under the applicable framework.
- It does not guarantee a profitable price. A contract can still be mispriced, thinly traded, or invalidated under its stated rules.
- It does not standardize settlement. The contract’s own wording, source hierarchy, authority, and review process control the result.
- It does not make access universal. Geography, age, KYC results, sanctions screening, and product-specific restrictions still apply.
Fees: why a simple “cheapest” winner is misleading
Kalshi’s published schedule
Kalshi maintains separate exchange and clearinghouse fee information. The public page available for this comparison exposed the schedule location but not a complete set of numeric rates. Use the live schedule and its effective date when calculating a trade. A rate can vary by contract type, order characteristics, or an updated schedule, so an old screenshot is not a reliable quote.
Polymarket’s disclosed economics
Polymarket’s primary documentation explains that shares represent a fully collateralized YES/NO pair: one YES share and one NO share together are backed by $1.00 USDC. Shares trade between $0.00 and $1.00, and the share representing the correct final outcome pays $1.00 USDC at resolution. The documentation does not provide a complete numeric fee table that can be matched line-for-line with Kalshi’s current schedule.
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Consequently, avoid declaring one platform universally cheaper. Compare the displayed execution price, any explicitly disclosed trading charge, funding or withdrawal charge, and the cost of exiting before resolution. If the platform presents a market-specific liquidity or transaction charge, include it in the calculation rather than relying on a headline rate.
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An illustrative break-even calculation
Suppose a YES share is displayed at $0.40 and the contract ultimately resolves YES. The gross result before any fees is a $1.00 payout minus the $0.40 purchase price, or $0.60 per share. If it resolves NO, the share’s payout is $0 and the gross loss is the $0.40 purchase price. The actual net result must subtract every applicable fee and account for the currency in which the platform settles.
This example is arithmetic, not a quote for either venue. Use the order ticket and current fee schedule for the real transaction.
What to record before comparing costs
- Displayed bid, ask, and your expected execution price.
- Whether the charge is assessed when opening, closing, or both.
- Any exchange, clearing, liquidity, or market-specific charge shown by the venue.
- Deposit, conversion, withdrawal, or network costs that the account terms disclose.
- The currency of the balance and the currency of the final payout.
- Whether an early sale is available and what price you would realistically receive.
Market catalogs and the effect of contract design
Kalshi’s restrictions are part of the product
Kalshi says it does not list markets on war, death, nuclear war, assassination, kidnapping, rocket explosions, or missile strikes. Those exclusions are not merely a temporary filter; they show how its regulated perimeter and product-certification process shape the catalog. Other contracts remain subject to the exchange rulebook and the definitions on their individual market pages.
Read the complete question, answer choices, close time, and settlement condition rather than inferring availability from a category label. A market about a policy announcement, economic release, sports result, or weather measurement can each have a different data source and cutoff.
Polymarket availability depends on the product and jurisdiction
Polymarket’s documentation establishes the share and settlement mechanics, but a single universal catalog should not be assumed. The market list visible to you can depend on whether you are using Polymarket US or another interface and on your location and account status. Check the market page’s eligibility notice and terms at the time of trading.
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Do not treat two similarly worded questions as equivalent. “Will event X happen by date Y?” can use different definitions of “happen,” different source publishers, different time zones, or different rules for a revised report on the two venues.
How prediction-market contracts settle
Polymarket’s $1.00 USDC outcome model
Polymarket says shares are priced from $0.00 to $1.00 USDC. Each YES/NO pair is fully collateralized by $1.00 USDC. When the market resolves, the shares representing the correct final outcome are paid $1.00 USDC each. The counterparty is another user, not a house, and a position can be sold before the event is known if a buyer is available.
That structure makes the displayed price an implied market assessment, not a guaranteed probability or a promise that you can exit at that price. A price of $0.70 reflects what participants are willing to pay under the market’s current liquidity and rules; it does not remove the chance of a zero payout.
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Kalshi contracts settle under the exchange’s rules and the individual product’s terms. Before trading, identify the named determination source, the authority that makes the final call, the observation window, the unit or threshold being measured, and the timing of the settlement credit. The rulebook and product-certification materials govern how those details are applied.
Do not import Polymarket’s $1.00 USDC assumption into a Kalshi contract, and do not assume that a Kalshi product uses the same data source or payout timing as a Polymarket market. The account’s product terms control.
The six settlement questions that matter
| Question | Why it matters |
|---|---|
| What exact event is being measured? | A broad headline can conceal a precise threshold, date, location, or eligible entity. |
| Which source decides the result? | Official statistics, election authorities, weather agencies, company releases, and other sources can publish different revisions or timestamps. |
| Who has determination authority? | The exchange, a designated administrator, or a specified data provider may have the final decision under the contract. |
| When is the result fixed? | Publication time, event time, cutoff time, and settlement time can differ. |
| Can a result be challenged or reviewed? | The contract may specify a review, correction, or dispute path, but the process and deadlines are not universal. |
| What happens if data are ambiguous or revised? | Definitions can address missing reports, rounding, revisions, cancellations, ties, or conflicting sources. If they do not, uncertainty remains a material risk. |
A step-by-step method for comparing one Kalshi market with one Polymarket market
- Identify the exact venue. Confirm whether the account is on Kalshi, Polymarket US, or another Polymarket interface. Record the legal entity and the eligibility notice shown for your location.
- Copy the full contract wording. Include the outcome labels, deadline, geographic scope, threshold, and time zone. Do not compare a shortened headline with a complete rule.
- Open the resolution section. Note the named source, determination authority, observation window, publication requirement, and treatment of corrections or missing data.
- Calculate the gross payoff. For a Polymarket share, use the stated $1.00 USDC winning payout. For a Kalshi contract, use the product terms and account currency rather than assuming the same model.
- Price the complete round trip. Include the displayed entry price, closing price or expected settlement, every disclosed fee, and any funding or withdrawal cost. Use the live Kalshi schedule and the current Polymarket market disclosures.
- Check liquidity and exit options. Confirm whether you can sell before resolution and whether the order book can fill your intended size. A theoretical price is not the same as an executable price.
- Verify account and withdrawal conditions. Complete required KYC, review geographic restrictions, and confirm the settlement currency and withdrawal procedure before committing funds.
- Save the rules and date. Keep a copy or record of the contract page, fee schedule effective date, and terms you relied on. Pages and market states can change before an event resolves.
Funding, currency, and withdrawals
Why currency changes the comparison
Polymarket’s documented market currency is USDC, and winning shares pay $1.00 USDC each. Your economic result therefore depends on the balance’s USDC value and on any cost associated with moving funds into or out of the account.
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Kalshi’s funding and settlement currency must be taken from the applicable product and account terms. Even where two contracts have similar displayed prices, a different settlement currency, conversion step, or withdrawal timetable changes the practical result.
Eligibility checks before funding
- Confirm that residents of your jurisdiction may open and use the specific product.
- Complete identity and age checks honestly; a failed or incomplete KYC review can block trading or withdrawals.
- Read restrictions covering prohibited persons, sanctioned locations, and account ownership.
- Verify minimums, processing times, and any required account verification for withdrawals.
- Keep transaction records for your own accounting and tax reporting obligations.
Market integrity, surveillance, and trading risk
Federal oversight is meaningful, but it is not a substitute for risk management. A February 2026 CFTC advisory reported enforcement cases involving misuse of nonpublic information and fraud in prediction markets traded on KalshiEX. The cases illustrate why surveillance and enforcement obligations matter: misconduct can occur even in a regulated market, and enforcement after the fact cannot guarantee that an individual trade was fair or profitable.
Event contracts also have distinctive risks:
- Information risk: A late official update can move the price before all participants see it.
- Definition risk: The everyday meaning of an event may differ from the contract’s technical definition.
- Liquidity risk: You may be unable to exit near the displayed price, especially close to a deadline.
- Timing risk: A source can publish after the event occurs, and settlement can follow later.
- Revision risk: A statistic or official result can be corrected under rules that specify which version controls.
- Concentration risk: Several contracts can depend on the same political, economic, or weather outcome.
Only commit an amount you can afford to lose, and avoid treating a high displayed probability as certainty.
Which platform fits which use case?
Kalshi may fit a reader who prioritizes a clearly defined U.S. exchange perimeter
Kalshi is the more straightforward fit when your priority is using the exchange that publicly describes itself as CFTC-regulated, provides KYC and surveillance disclosures, and offers contracts inside a U.S. designated-market framework. You still need to accept its catalog restrictions, inspect each product rule, and use its current fee schedule.
Polymarket may fit a reader who wants the documented USDC share model
Polymarket’s model is useful when you want prices quoted from $0.00 to $1.00 USDC, a $1.00 USDC payout for the correct outcome, and the ability to trade against other users before resolution. The key qualification is product identity: confirm that you are using Polymarket US or another interface whose legal and geographic rules you understand.
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The decisive factors are the exact wording, resolution source, liquidity, net fees, account eligibility, and withdrawal mechanics. Choose the venue whose contract rules you can explain in one paragraph and whose total cost you can calculate before placing the order.
Common mistakes and how to avoid them
Assuming a brand name identifies the legal product
Fix this by checking the operator and terms shown in your account. The CFTC designation for Polymarket US does not establish that every Polymarket interface has identical status.
Comparing headline prices without payout rules
Fix this by writing down the winning payout, losing payout, settlement currency, and settlement date before comparing prices.
Using an old fee screenshot
Fix this by opening the current fee page, noting its effective date, and checking the order ticket for market-specific charges.
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Reading only the event title
Fix this by reading the source hierarchy, time zone, threshold, and treatment of revisions or ambiguous results.
Assuming a liquid-looking screen guarantees an exit
Fix this by checking available size at the price you need and planning for the possibility of holding through resolution.
Bottom line
Kalshi and Polymarket should be evaluated contract by contract. Kalshi has a U.S. CFTC-designated exchange history dating to November 2020 and publishes a regulated-exchange, KYC, reporting, and surveillance framework. Polymarket US has a CFTC designation dating to July 2025, while other Polymarket interfaces require separate eligibility and jurisdiction checks. Polymarket documents a $0.00-to-$1.00 USDC share model with a $1.00 USDC winning payout; Kalshi payout and currency details come from each product’s terms. Because complete, directly comparable numeric fee tables are not established for both venues, the honest “cheapest” answer is the one produced by your live order ticket, current fee schedule, funding costs, and expected exit price. Read the exact resolution rules before trading either platform.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
