Has Mississippi sued Kalshi or ordered it to stop?

Not that we have found. We have no cease-and-desist letter, state lawsuit, court order or settlement in Mississippi that names Kalshi, as of Oct. 21, 2026.

How old do you have to be to use Kalshi in Mississippi?

18. That is Kalshi's minimum age, and it lists no different rule for Mississippi.

Is sports betting legal in Mississippi?

Retail only. Sports betting at licensed casinos; mobile apps work only on casino premises.

Which court will decide whether Mississippi can regulate Kalshi?

Federal appeals from Mississippi go to the Fifth Circuit, which has not yet been asked to decide the question. 3 petitions now ask the U.S. Supreme Court to settle the question nationally.

MS · Kalshi · Checked Oct. 21, 2026

Is Kalshi legal in Mississippi?

No restriction found Mississippi: No public action found

The short answer

Kalshi does not publish a list of states where it is unavailable, and we found no court order, regulator action or Kalshi notice that stops it from serving Mississippi as of Oct. 22, 2026.

Mississippi has one public action on record that names Kalshi. The latest (Oct. 7, 2026): Mississippi's attorney general signed an Ohio-led amicus brief, joined by 38 other states and DC, asking the U.S. Supreme Court to grant New Jersey's petition in Flaherty v. KalshiEX (No. 26-299).

Federal appeals from Mississippi go to the Fifth Circuit, which has not yet been asked to decide the question.

Availability: Kalshi Help Center: Signing Up as an Individual (updated March 10, 2026), checked Oct. 22, 2026. A summary of public actions, not legal advice.

Follow Mississippi

Cite this page

Bluebook

Is Kalshi Legal in Mississippi?, Prediction Market Laws (last updated Oct. 22, 2026), https://predictionmarketlaws.com/platforms/kalshi/mississippi.

APA

Prediction Market Laws. (2026, October 22). Is Kalshi Legal in Mississippi?. https://predictionmarketlaws.com/platforms/kalshi/mississippi

What Mississippi has done about Kalshi

Oct. 7, 2026
Other development
Mississippi's attorney general signed an Ohio-led amicus brief, joined by 38 other states and DC, asking the U.S. Supreme Court to grant New Jersey's petition in Flaherty v. KalshiEX (No. 26-299).
Source: Ohio et al. amicus brief, U.S. Supreme Court No. 26-299

All 2 actions in Mississippi

Court cases

We track no case between Kalshi and Mississippi.

The legal backdrop in Mississippi

State status: No public action foundWe found no public enforcement, litigation or enacted law. Pending bills may still be listed on the state's page.
Online sports betting: Retail onlySports betting at licensed casinos; mobile apps work only on casino premises.
Federal appeals court: Fifth CircuitNo appeal yet.
Who regulates: Mississippi Gaming Commission; Mississippi Attorney General
Laws and bills: None specific to prediction markets

Using Kalshi in Mississippi

Minimum age: 18
Identity checks: Kalshi requires legal name, date of birth and a residential address (no commercial addresses or PO boxes) that match a government ID. It asks for a live in-app photo of a driver's license or passport. It may also ask for proof of address, employment information or source of funds. It may request a Social Security number at any point after signup, which it uses for identity verification and tax reporting; an SSN is not required to deposit. (Help articles updated June 30 and August 25, 2026.) Source
Tax forms: Kalshi says users who meet IRS reporting thresholds get Form 1099-INT (interest), 1099-MISC (credits and rewards), 1099-B (proceeds from crypto transfers) and 1099-DA (digital asset reporting from ZeroHash). The forms appear under Tax Info in the Account tab, and some are emailed through Zenwork. Kalshi gives no dollar thresholds or issue dates. Trading profit-and-loss statements are in the documents tab (help article updated June 22, 2026). SourceWhat the platform says it reports; not tax advice.

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Questions people ask

Is Kalshi legal in Mississippi?: Kalshi does not publish a list of states where it is unavailable, and we found no court order, regulator action or Kalshi notice that stops it from serving Mississippi as of Oct. 22, 2026. Mississippi has one public action on record that names Kalshi. The latest (Oct. 7, 2026): Mississippi's attorney general signed an Ohio-led amicus brief, joined by 38 other states and DC, asking the U.S. Supreme Court to grant New Jersey's petition in Flaherty v. KalshiEX (No. 26-299). This summarises public actions; it is not legal advice.
Has Mississippi sued Kalshi or ordered it to stop?: Not that we have found. We have no cease-and-desist letter, state lawsuit, court order or settlement in Mississippi that names Kalshi, as of Oct. 21, 2026.
How old do you have to be to use Kalshi in Mississippi?: 18. That is Kalshi's minimum age, and it lists no different rule for Mississippi.
Is sports betting legal in Mississippi?: Retail only. Sports betting at licensed casinos; mobile apps work only on casino premises.
Which court will decide whether Mississippi can regulate Kalshi?: Federal appeals from Mississippi go to the Fifth Circuit, which has not yet been asked to decide the question. 3 petitions now ask the U.S. Supreme Court to settle the question nationally.