--- url: "https://polytoolhub.com/tools/mktgap/" publisher: "Polytoolhub" dateModified: "2026-11-03" --- [← Risk management]() ![MKTGAP logo]() Analytics # MKTGAP Calculate fee-adjusted prediction-market price gaps with MKTGAP’s public manual-input calculator. [**4.0**/ 5Editorial rating]() [0 user reviews]() [Visit official site]() mktgap.com **Available on:** Web **Pricing:** [See plans and costs ↓]() [Screenshots]() [Explore alternatives]() **Availability: public** · No account or wallet was needed for the reviewed calculator. [Risk management]() [Arbitrage]() +1 more [Learning]() ## Screenshots and interface Product preview1 / 1 Public manual fee calculator. Live data feeds and API plans were not yet available. ## What is MKTGAP? MKTGAP’s available calculator compares two user-entered prices after applying published venue fee formulas. It shows gross and net gaps, an all-in pair cost and a PnL illustration, with links to the formula sources. The calculator shows how fees change the headline price difference. It does not fetch live prices, execute orders or establish that the two contracts settle identically. Live gap feeds, Pro alerts and API access were still planned. ### Who it is for - Researchers comparing fees across venues - Users learning why a gross gap can disappear after costs ## Features and coverage **Available on:** Web **Markets & venues:** Polymarket, Kalshi, PredictIt - **Two-leg calculator** Enter platforms, sides, contract count and ask prices. - **Fee breakdown** Inspect per-leg fees and net-gap calculations with source references. - **Methodology guides** Read the assumptions and exclusions behind the comparison. ## Workflows with MKTGAP ### Compare a candidate pair Enter the actual ask prices and relevant category, then inspect the fee-adjusted pair cost. ### Stress the result Account separately for slippage, deposits, withdrawals, settlement timing and contract differences. ## Pricing and total cost The public calculator is accessible without payment. Pro and Data Client prices were not announced; those services were marked as forthcoming. **Access:** No account or wallet was needed for the reviewed calculator. ## Getting started 1. Open the fee calculator. 2. Enter the contract count, venues, sides and current ask prices. 3. Read the fee assumptions and check costs excluded from the result. ## Useful links - [View pricing]() ### What to check - Prices are manually supplied. Slippage, funding costs, rebates and time to settlement are not fully included. The calculator currently covers Kalshi, Polymarket and PredictIt, not every venue discussed on the site. A closer look ## Ratings & reviews [Write a review]() Editorial rating **4.0**/ 5 0 user reviews Polytoolhub editorial ### Our take on MKTGAP A transparent and useful manual fee-comparison tool with stated exclusions and formula sources. Its value is strongest as a calculator, not as the future live-feed product. Based on documented features, setup and access terms. [How we rate]() ### User reviews 0 The main score switches to user ratings after 5 published reviews. **Be the first to share your experience** A specific example helps the next person choose the right tool. Write a review ### How was your experience with MKTGAP? Share what you used, what worked and what could be better. We confirm your email and review the submission before publishing. To submit a review, email [info@polytoolhub.com]() with the tool name, your rating and your experience. Enable JavaScript to prepare a draft here. ## Related tools [Browse category]() ![PredictionBubbles: Public market map after dismissing the introduction; bubble size and colour encode the selected metrics.]() ![PredictionBubbles logo]()[PredictionBubbles]() Analytics**4.0**Editorial Visualise Polymarket and Kalshi markets as bubbles sized by activity and coloured by probability. - Access Web Explore market candidates; the calculator still requires current prices and matched terms. ![FORS: Public aggregated market cards. No wallet was connected for this review.]() ![FORS logo]()[FORS]() Trading terminal**3.5**Editorial Compare prediction-market events and explore analytics and copy workflows through FORS. - Access Web Find comparable markets before manually calculating trade costs. ![Alphapoly (Chainstack): Pipeline stages and local application setup.]() [Alphapoly (Chainstack)]() Analytics**3.0**Editorial Run a local application that discovers logical relationships between Polymarket contracts, builds covering pairs and tracks paired positions. - Access Web Also in Risk Management and Position Sizing Tools. ## Frequently asked questions about MKTGAP ### Does MKTGAP use live market prices? The calculator explicitly says prices are entered by the user. ### Can I use its API today? The pricing page presented Data Client access and real-time Pro services as planned, without a launch price. ### What does MKTGAP cost? The public calculator is accessible without payment. Pro and Data Client prices were not announced; those services were marked as forthcoming. ### What access does MKTGAP require? No account or wallet was needed for the reviewed calculator. In this profile