About this site
Last updated · how we verify
Every figure on this site is stored with its source URL and a verification date, and the site is generated from that file. Facts we could not confirm are marked as unconfirmed rather than stated — the build refuses to print them as plain claims. We earn affiliate commission when you sign up through our links, which is disclosed on every page and does not affect what we publish.
How we verify
Every number on this site lives in a single file, data/facts.json, and every entry in that file
carries three fields: the value, the source URL, and the date it was verified. Pages are generated from that
file, so there is no way for a figure to appear on a page without a recorded source.
Each fact is graded:
| Grade | Meaning | How it renders |
|---|---|---|
| Primary | Confirmed against Polymarket's own documentation, a CFTC filing, or an ICE investor-relations release. | Stated plainly |
| Secondary | Corroborated by two or more independent outlets, but the primary document was unreachable. | Stated, with the source cited |
| Unconfirmed | Sources conflict, or we could not verify it at all. | Marked as unconfirmed, or omitted — never stated as fact |
The build fails if a page tries to print an unconfirmed value as a plain claim. That is enforced in code, not by editorial discipline.
The Polymarket US fee coefficients, because docs.polymarket.us was unreachable from our build
environment; PredictIt's current position limit, because sources conflict between the historical $850 cap and
a reported expansion; and Kalshi's per-category multipliers. Each is flagged where it appears rather than
quietly presented as settled.
How this site makes money
Affiliate commission. If you sign up to Polymarket through a link here, we may be paid. That is the only revenue source — there are no ads, no paid placements and no sponsored reviews.
What that does not buy:
- It does not change the fee tables. They are generated from the schedule Polymarket publishes.
- It does not soften the criticism. The missing US web platform, the oracle resolution risk and the wrong-network deposit trap are all on the pages that carry affiliate links.
- It does not make us claim availability where there is none. US visitors are pointed at Polymarket US and their own state's status, because the international affiliate link cannot work from a US IP address — sending them there anyway would earn nothing and waste their time.
Affiliate links carry rel="sponsored", as Google requires.
Corrections
This site previously published several things that were wrong, and they are worth stating plainly because they are the same errors most Polymarket reviews still carry:
- It claimed a "~2% fee" and a cut of profits. Both false — the real model is a per-category taker fee that peaks at a 50¢ contract price, with no maker fee.
- It said Polymarket was "coming to the US soon" with an expected Q1–Q2 2026 launch. It had already relaunched on 2 December 2025.
- It referred to MATIC throughout. The token is POL.
- It described Kalshi as charging "7% fees" — a misreading of the 0.07 coefficient in a price-weighted formula, which works out closer to 1.75% of notional at a 50¢ contract.
- It cited a positive-review percentage we cannot substantiate. Removed.
If you find something wrong here, it is a bug. The fee tables and status pages are the whole point of the site.
Independence
polymarket.review is not affiliated with Polymarket, Kalshi, PredictIt or Manifold. Nothing here is investment, legal or tax advice. Event contracts carry risk of loss.
See it in practice
Fees
Where the verification work mostly went.
By state
Status derived from verified lists, not guessed.
US access
The timeline, sourced.
All figures on this page verified 17 August 2026 against primary sources where reachable. Unconfirmed values are marked.