Predictit Calculator

Calculate your potential profit, loss, and ROI for any political trade.

What is a PredictIt Calculator?

A predictit calculator is a specialized tool designed to help traders on PredictIt, a real-money political prediction market. It allows users to calculate potential profits and losses from their trades before committing capital. By inputting the number of shares, the purchase price, and the predicted outcome, the calculator instantly shows the financial implications of a trade, including the platform’s fees. This is crucial for making informed decisions in the fast-paced environment of event contract trading.

Anyone who trades or is considering trading on PredictIt should use this calculator. Whether you are a seasoned political analyst or a newcomer to prediction markets, understanding your potential return on investment (ROI) is fundamental. A common misunderstanding is underestimating the impact of fees. PredictIt charges a 10% fee on profits and a 5% fee on all withdrawals, which can significantly affect your overall earnings. This calculator bakes those fees right into the profit calculation.

PredictIt Calculator Formula and Explanation

The calculations behind this tool are straightforward but essential for understanding your trade’s potential. The calculator determines your net profit or loss based on your initial investment and whether your prediction comes true.

1. Total Investment = Number of Shares × Buy Price per Share
2. Gross Payout = Number of Shares × Outcome Price (either $1.00 for a win or $0.00 for a loss)
3. Gross Profit = Gross Payout – Total Investment
4. Profit Fee = 10% of Gross Profit (only if Gross Profit > 0)
5. Net Profit / Loss = Gross Profit – Profit Fee
6. Return on Investment (ROI) = (Net Profit / Total Investment) × 100

This does not include the 5% withdrawal fee, which is applied to the entire amount you withdraw from the platform, not just the profits from one trade. For more on how fees work, check out our guide to investment profit calculator strategies.

Formula Variables

Variable	Meaning	Unit	Typical Range
Buy Price	Cost per “Yes” share	Cents (¢)	1¢ – 99¢
Number of Shares	Total shares purchased	Count	1 – 5000+
Outcome Price	Value of each share at settlement	Dollars ($)	$0.00 or $1.00
Profit Fee	PredictIt’s 10% commission on gross profit	Percentage (%)	10%

Practical Examples

Example 1: A Winning Trade

Let’s say you believe a candidate has a strong chance of winning a primary. The “Yes” shares are trading at 75¢.

• Inputs:
  • Buy Price: 75¢
  • Number of Shares: 200
  • Outcome: Prediction is Correct (resolves to $1.00)
• Results:
  • Total Investment: $150.00
  • Gross Payout: $200.00
  • Gross Profit: $50.00
  • Profit Fee (10%): -$5.00
  • Net Profit: $45.00
  • ROI: 30.00%

Example 2: A Losing Trade

Now, imagine you bet on a bill passing, but it fails in committee. You bought shares at 40¢.

• Inputs:
  • Buy Price: 40¢
  • Number of Shares: 500
  • Outcome: Prediction is Incorrect (resolves to $0.00)
• Results:
  • Total Investment: $200.00
  • Gross Payout: $0.00
  • Profit Fee: $0.00 (No fee on losses)
  • Net Loss: -$200.00
  • ROI: -100%

These examples show how the predictit calculator can quickly model both upside and downside, which is crucial for risk management. To explore odds in more detail, you might use an odds converter.

How to Use This PredictIt Calculator

Using the calculator is simple and intuitive. Follow these steps to evaluate your trade:

1. Enter Your Buy Price: In the first field, input the price in cents (e.g., ’60’ for 60¢) you are paying for each “Yes” share.
2. Enter the Number of Shares: In the second field, type the total quantity of shares you plan to purchase.
3. Select the Market Outcome: Use the dropdown menu to choose whether you expect your prediction to be correct (resolving to $1.00) or incorrect (resolving to $0.00).
4. Review the Results: The calculator will instantly update, showing your Total Investment, Gross Payout, the 10% Profit Fee (if applicable), your final Net Profit or Loss, and your Return on Investment (ROI).

The primary highlighted result shows your take-home profit or loss, providing a clear and immediate understanding of the trade’s financial outcome.

Key Factors That Affect PredictIt Trades

Several factors can influence the prices and outcomes of markets on PredictIt. A savvy trader should always consider these before investing.

• Breaking News: Major news events, scandals, or endorsements can cause rapid price fluctuations.
• Polling Data: New polls often shift market sentiment and, consequently, share prices. Keeping an eye on polling trends is a key part of political event trading strategies.
• Market Volume: Low-volume markets can be more volatile and harder to exit. High volume generally indicates more stable pricing.
• Trader Sentiment: Sometimes, markets can be driven by popular opinion or “hype” rather than fundamental analysis. Recognizing this can present unique opportunities.
• Platform Fees: The 10% profit fee and 5% withdrawal fee are constant factors that reduce your net returns. Always factor them in.
• Time to Resolution: The longer a market is open, the more opportunities there are for events to occur that change the likely outcome.

Frequently Asked Questions (FAQ)

What are the fees on PredictIt?

PredictIt charges a 10% fee on all profits from a trade. There is no fee if you break even or incur a loss. Additionally, there is a 5% fee on all funds withdrawn from your account.

What is the maximum I can invest in a market?

There is an $850 cap on individual investments per question (market). This is due to the regulatory agreement under which PredictIt operates.

Is PredictIt legal in the US?

Yes, PredictIt operates legally in the U.S. under a No-Action letter from the Commodity Futures Trading Commission (CFTC), which allows it to function as a not-for-profit entity for academic and research purposes.

Can I sell my shares before the market closes?

Yes. You can sell your shares at any time to another trader, as long as there is a buyer. This allows you to lock in profits or cut losses before the event’s final outcome is known.

How are share prices determined?

Share prices, which range from 1¢ to 99¢, are determined by a continuous double auction system. The price reflects the market’s collective belief in the probability of an outcome. A price of 90¢ suggests a 90% chance of the “Yes” outcome occurring.

What happens when my prediction is correct?

If you hold “Yes” shares and the event occurs, each share becomes worth $1.00 at settlement. This predictit calculator automatically determines your profit based on this outcome.

What is a “No” share?

Buying a “No” share is a bet that an event will *not* happen. If the event does not happen, each “No” share you hold settles at $1.00. This calculator is focused on “Yes” shares, but the profit principle is the same.

Does this calculator account for the withdrawal fee?

No, this calculator focuses on per-trade profitability. The 5% withdrawal fee is applied to the total amount you withdraw from your account, which could include funds from multiple trades or your initial deposits.

Related Tools and Internal Resources

If you found this predictit calculator useful, explore our other resources for traders and investors:

• ROI Calculator: A more general tool to calculate Return on Investment for various assets.
• Investment Calculator: Analyze potential returns from different types of investments over time.
• Understanding Prediction Markets: A deep dive into how platforms like PredictIt work.
• Political Event Trading Strategies: Learn advanced strategies for maximizing your returns.
• Odds Converter: Convert betting odds between different formats (decimal, fractional, American).
• Market Analysis 2026: Read our latest analysis on upcoming political and financial events.