Question 1

Why is my fee different from another user's on the same trade?

Accepted Answer

Two factors move your fee off the base rate: your VIP tier (up to 40% off, based on 30-day trading volume) and your PAX Holder tier (up to 50% off, based on how long and how much PAX you hold). Discounts stack compound: 1 − (1 − vip)(1 − pax). Your tier is visible on the Tier Center page, and your effective fee is shown in the order preview before you confirm every trade.

Question 2

Why does the AMM fee change depending on the market probability?

Accepted Answer

AMM fast markets use a symmetric fee formula: fee = notional × base_rate × p × (1 − p), where p is the current YES price. The fee peaks at 1.25% when the market is at 50/50 (maximum uncertainty) and drops toward zero at the extremes. This mirrors the industry-standard prediction market spread and prevents overcharging on high-probability outcomes.

Question 3

What is the difference between the AMM fee and the CLOB fee?

Accepted Answer

AMM fast markets use a house edge charged as a spread inside the price. The effective rate is 5% base × p × (1 − p) after your discounts, which peaks at 1.25% at 50/50 markets and drops toward zero at the extremes. CLOB (central limit order book) markets charge a flat 30 basis point taker fee on filled orders. Makers on CLOB receive a 2 basis point rebate. Both venues use the same tier discount stack.

Question 4

How is my VIP tier calculated?

Accepted Answer

Your VIP tier is a function of your rolling 30-day USDT trading volume across both AMM and CLOB venues. There are six tiers from Bronze (base rate) to Diamond (40% off). Tier is recalculated daily. Full tier ladder is on the Tier Center page.

Question 5

How is my PAX Holder tier calculated?

Accepted Answer

Your PAX Holder tier reflects two things: how much PAX token you hold (measured as the 30-day average USD value) and how long you have held it continuously. There are six tiers from None (no benefit) to Founding (up to 50% fee discount plus creator and builder benefits). Selling PAX resets the continuity clock. Full ladder is on the Tier Center page.

Question 6

Do makers pay fees on CLOB?

Accepted Answer

No. Makers on CLOB — orders that rest on the book and are matched against by later takers — receive a 2 basis point rebate, not a fee. This applies to LIMIT and POST_ONLY orders that do not cross the book at placement.

Question 7

Are fees charged on cancellations or unfilled orders?

Accepted Answer

No. Fees are only charged on the filled portion of an order. A cancelled or expired order that never matched costs nothing. Partial fills are charged proportionally to the filled quantity.

Question 8

How are fees split between the platform, LPs, and builders?

Accepted Answer

On CLOB, the 30 basis point taker fee is split across five actors: acquisition_builder (6 bps), execution_builder (6 bps), operator (3 bps), market_creator (5 bps), lp (7 bps), and platform_net (3 bps). Unfilled actor roles (e.g. no builder attribution) redistribute to platform_net. Progressive tier bumps shift bps to the builders at trade_full and genesis tiers. On AMM, the fee accrues to the platform pool and is redistributed to winning positions minus the house edge.

Question 9

Can I see a fee receipt for a past trade?

Accepted Answer

Yes. Your last 30 days of trades and per-trade fee breakdowns are on the personal fee dashboard at /settings/fees. Each row is a link to a downloadable receipt showing the base rate, discounts applied, effective fee, and disclosure version that governed that trade. Older data is available on request.

Question 10

How do I dispute a fee I believe was calculated incorrectly?

Accepted Answer

Contact support with the trade ID from your fee receipt. Every fee event is written to an immutable financial ledger (see /learn/verifiable-settlement). Support will re-run the fee computation against the disclosure version that was live at fill time and either confirm the charge or issue a refund via a compensating ledger entry.

Venue	Order type	Rate	Effective range
CLOB	Taker	30 bps	9 – 30 bps after discounts
CLOB	Maker	+ 2 bps rebate	Rebate paid on fill
AMM (fast market)	House edge	5% × p (1 − p)	0 – 1.25% by price

Program	Basis	Range	Where
VIP tier	30-day trading volume	0 – 40% off	/vip
PAX Holder tier	PAX held × continuous days	0 – 50% off	/tier-center
Combined max	Diamond VIP + Founding PAX	70% off	—

How fees work on PredictAsiaX

Base rates

Your discounts stack compound

Fee calculator

The formula in full

Fee schedule versioning

Historical versions

Questions we hear