Polymarket Perps vs Kalshi Timeless: the 24/7 perpetual showdown

In late April 2026, Polymarket and Kalshi raced to launch perpetual products within six days of each other. Polymarket Perps went live on April 21; Kalshi Timeless followed on April 27. Both bet that 24/7 leveraged exposure would pull volume away from Coinbase, Robinhood, and the offshore crypto venues.

The launch sequence

Date	Event
April 21, 2026	Polymarket Perps live at polymarket.com/perps
April 22, 2026	Polymarket adds equities (NVDA, TSLA, AAPL) and gold
April 27, 2026	Kalshi Timeless launches with crypto-only catalogue

Polymarket's six-day head start matters less than the structural choices each venue made. Polymarket built on its existing self-custody, on-chain wallet stack with pUSD collateral. Kalshi extended its existing CFTC DCM perimeter with a custodial perpetual product cleared through its US banking partner.

Side-by-side comparison

Dimension	Polymarket Perps	Kalshi Timeless
Launch date	April 21, 2026	April 27, 2026
Collateral	pUSD (USDC-backed, on Polygon)	USD held with clearing partner
Custody	Self-custody (your wallet)	Custodial
Max leverage	Up to 250x (marketing); 5x–10x default	Conservative caps at launch
Trading hours	24/7	24/7
Settlement	On-chain, continuous	Cash-settled per Kalshi mechanics
Funding model	Periodic funding in pUSD	Periodic funding in USD
KYC	Wallet only	Full KYC + SSN required
Geography	Blocks US, UK, FR, DE, and 30+ jurisdictions	US only (50 states + DC)
Public API	Gamma/CLOB extensions in flight	Public REST API with sign-up
Asset coverage at launch	Crypto + equities + commodities	Crypto only
Tax reporting	Self-report	1099

Why pick Polymarket Perps

• You're a non-US trader and want self-custody.
• You want exposure to equities (NVDA, TSLA, AAPL) and commodities (gold) alongside crypto, in one venue.
• You already use Polymarket prediction markets and want to compose positions across both products in the same wallet.
• You need API access for algorithmic trading.

Why pick Kalshi Timeless

• You're a US resident and need a CFTC-regulated venue.
• You want USD bank-rail deposits and 1099 tax reporting.
• You prefer a custodial product where the venue handles key management for you.
• You don't need equities or commodities exposure (Kalshi launched crypto-only).

The arbitrage angle

Funding-rate arbitrage between Polymarket Perps and Kalshi Timeless is the obvious play, but the geography split makes it impractical for most traders. A US-resident trader can use Kalshi but is geo-blocked from Polymarket. A non-US trader can use Polymarket but cannot open a Kalshi account.

In practice, the funding-rate spread will be exploited by:

• US-resident market makers who maintain offshore entities for Polymarket access.
• Non-US institutional desks with US-domiciled affiliates that can trade Kalshi.
• Cross-jurisdiction prop shops with the legal structure to hold positions on both.

For retail arbitrage, the more accessible spread is Polymarket Perps vs Hyperliquid (covered in /perps/polymarket-perps-vs-hyperliquid).

Liquidity at launch

Both products will have thin books in the first weeks. The market makers that quoted Polymarket prediction markets are now also quoting perps, but they need time to build the inventory and risk frameworks for continuous-exposure products. Expect:

• Wider bid-ask spreads on both venues for the first 30 days.
• High funding-rate volatility as the market tries to discover the right anchor to spot.
• Several "training wheels" interventions (lower leverage caps, position limits, market pauses) in the first month.

What to watch for

• Polymarket Perps API documentation — once Gamma/CLOB exposes perp endpoints, algorithmic strategies become viable.
• Kalshi's expansion into equities perps — expected within Q3 2026.
• The first listed Polymarket Perps token incentive program.
• Whether US residents get access to Polymarket Perps under the existing DCM.

Frequently asked questions

Are Polymarket Perps and Kalshi Timeless the same product?

Mechanically they are similar (both are 24/7 perpetual futures with funding rates), but they operate in different regulatory regimes, use different collateral, and target different user bases. Polymarket Perps are self-custody and global ex-US; Kalshi Timeless is custodial and US-only.

Which has lower fees?

Neither has published a final fee schedule. Polymarket has historically run lower taker fees than Kalshi on prediction contracts; we expect the perps fee schedules to follow that pattern. Funding rates will dominate cost over time on either venue.

Can I open accounts on both?

Geography permitting, yes — but most traders will only have access to one. Polymarket blocks US residents; Kalshi requires US residency.

Which is safer?

Different risks. Polymarket Perps put you in self-custody (you bear key risk but no counterparty risk). Kalshi Timeless puts you in custody of a CFTC-regulated entity (you bear counterparty risk but get regulatory protection).