How to Start a Prediction Market: Practical Checklist

The main choice: hosted platform versus self-hosted market

In simple terms, the choice is about trade-offs between convenience and control. A hosted platform gives you a ready-made interface, built-in users, and automated settlement. Self-hosting gives you complete control over wording, fees, and settlement mechanics but requires technical work, legal attention, and ongoing maintenance.

The key thing to know: neither option removes the need for clear resolution rules. Even on a hosted site you must define the event, the resolution source, and deadlines clearly.

Side-by-side comparison: hosted vs self-hosted

Feature	Hosted platform	Self-hosted market
Setup time	Minutes to a few hours — form-based creation on the platform	Days to weeks — deploy software, domain, payment integration
Technical skills required	Low — non-technical organizers can create markets	High — developer + ops skills for reliability and security
Upfront cost	Low or none; platform takes a fee	Higher: hosting, domain, developer time, possibly oracles
Fees and revenue model	Platform fees per trade or spread; transparent	You set fees; keep revenue but handle compliance
Control over resolution rules	Often flexible, but some platforms enforce standards	Complete control — you decide sources and tiebreakers
Liquidity support	Some platforms run automated market makers (AMMs) or promotional liquidity	You must provide liquidity or integrate an AMM yourself
Participant base	Access to existing users and traffic	You must recruit all participants yourself
Settlement and payouts	Automated by platform	You implement on-chain or manual settlement
Dispute handling	Platform usually mediates	You must run dispute resolution or appoint an arbiter
Regulatory/identity requirements	Platform enforces KYC/limits as needed	You are responsible for compliance and KYC if required

A practical checklist to start a prediction market

Below is a step-by-step checklist you can follow. Use it like a project plan.

1. Define the event precisely

• Write the question in a single clear sentence. Avoid ambiguous words like "likely" or "substantially."
• Choose binary vs multi-outcome. Binary is Yes/No. A Yes contract — an event contract that pays $1 if the event happens — is easiest for newcomers.
• Set the trading window: open and close dates, and the resolution deadline (when the outcome is determined).
• Decide exact resolution conditions: what counts as "happened" and what doesn't. List edge cases.

2. Pick platform and contract mechanics

• Hosted platform: compare fees, user base, dispute process, and how they enforce resolution wording.
• Self-hosted: choose software (open-source market frameworks or custom code), hosting, and whether settlement will be on-chain or off-chain.
• Fee models: percentage of trades, maker/taker fees, listing fees. Account for fees in communications so participants know costs.
• Settlement method: automated (platform pays via escrow or smart contract) or manual (organizer releases funds after resolution).

3. Draft robust resolution rules

• Select authoritative data sources (e.g., a named public database, scoreboard, press release). Prefer primary sources over secondary reporting.
• Define a tiebreaker: if two sources disagree, which source resolves it, or who is the appointed arbiter.
• Set a resolution deadline: a final date/time when the market will be settled even if data is missing.
• Add an appeals process and a timeframe for objections.

4. Prepare the market launch

• Write a short organizer statement that repeats the exact resolution rules and named sources.
• Create a FAQ for traders: trading hours, fees, how disputes are handled, and who the organizer is.
• Seed initial liquidity if needed. Common approach: the organizer buys a small number of contracts to make prices meaningful.

A simple example: If a Yes contract costs 62¢ and pays $1 if the event happens, buying one contract costs $0.62. If the event happens, the contract pays $1, so the gain before fees is $0.38. If the event does not happen, the contract expires at $0, so the loss is $0.62.

5. Launch and monitor

• Announce the market with the short statement and link to full rules. Encourage early participation for better price discovery.
• Monitor liquidity and participation daily. If volume is very low, consider seeding more liquidity or extending promotion.
• Track news and be ready to clarify resolution scope if relevant events occur.

6. Resolve and document the outcome

• At resolution, cite the named authoritative source and the exact data point used.
• Publish a brief resolution report: what happened, which source was used, and how payouts were calculated.
• Retain logs (screenshots, timestamps, or oracle feeds) for at least as long as any appeal window.

Common mistake: leaving a vague resolution source like "media reports" without naming specific outlets or APIs. That creates disputes.

Which approach fits your project

• Use a hosted platform if you want speed, low setup cost, and access to existing traders. Good for public polls, classroom projects, and short-term events.

• Choose self-hosting if you need bespoke resolution rules, custom fees, or specific identity/record-keeping policies. Good for organizations with technical support, research groups wanting experimental mechanics, or markets tied to internal decision-making.

• If you're unsure: start on a hosted platform to validate interest. If the market gains traction or needs special rules, migrate to a self-hosted solution later.

Keep reading

• What Are Prediction Markets?
• How Do Prediction Markets Work?
• What Are Yes/No Contracts?
• How Prediction Market Payouts Work