PolyTerminal
How a code is used
A builder is any person, group or organization that passes its users' orders on to Polymarket. Its code is a 32-byte hex string, copied from the builder's Polymarket settings and put into the order before the user signs it. Codes are public identifiers. Volume is credited for every matched trade that carries the code, and an order that has not matched does not appear in builder trade results.
Builder fees on prediction markets
Builder fees are flat percentages of the trade value, which each builder sets within limits that Polymarket enforces. A new profile starts at 0%, and the highest rates are 1% on taker orders and 0.5% on maker orders. Rate changes are paced: one change per 7 days, taking effect 3 days after being scheduled. Builder profiles and fee rates are publicly queryable.
Builder fees are an extra layer: they stack on top of platform fees and never replace them. On a market with no platform fee, an order that carries a builder code pays the builder fee only. Polymarket can switch off a builder code at any time, and the fees guide shows how a builder fee sits next to the taker and maker fees.
Sources and checks
Every rule quoted in this article comes from the registry below. Each row names the official page and the day it was compared with the text.
All 15 rules used in this article
| Rule | Value | Official source | Checked |
|---|---|---|---|
| Where the builder code travels | is written into the signed order and recorded onchain | docs.polymarket.com/ | |
| What a builder is | any person, group or organization that passes its users' orders on to Polymarket | docs.polymarket.com/ | |
| Format of a builder code | a 32-byte hex string | docs.polymarket.com/ | |
| Whether a builder code is secret | are public identifiers | docs.polymarket.com/ | |
| When volume is credited to a builder | for every matched trade that carries the code | docs.polymarket.com/ | |
| How builder fees are expressed | flat percentages of the trade value, which each builder sets within limits that Polymarket enforces | docs.polymarket.com/ | |
| Default builder fee rate (prediction markets) | 0% | docs.polymarket.com/ | |
| Highest builder fee on taker orders (prediction markets) | 1% | docs.polymarket.com/ | |
| Highest builder fee on maker orders (prediction markets) | 0.5% | docs.polymarket.com/ | |
| Time between builder fee changes | 7 days | docs.polymarket.com/ | |
| Notice before a builder fee change takes effect | 3 days | docs.polymarket.com/ | |
| Builder fee rates | are publicly queryable | docs.polymarket.com/ | |
| How builder fees combine with platform fees | they stack on top of platform fees and never replace them | docs.polymarket.com/ | |
| What a user pays when a market has no platform fee and the order carries a builder code | the builder fee only | docs.polymarket.com/ | |
| Polymarket and disabled builder codes | can switch off a builder code at any time | docs.polymarket.com/ |
Related terms
Read the full guide
Basics · 8 min
Polymarket Fees Explained
Polymarket prediction market fees explained: the taker fee formula, rates by category, why fees peak at 50 cents, maker rebates, builder fees and 2026 changes.
PolyTerminal is an independent interface for Polymarket and is not operated or endorsed by Polymarket. Orders placed through PolyTerminal carry PolyTerminal’s Polymarket builder code, and PolyTerminal may charge a builder fee on top of Polymarket’s own fees. This page is educational and is not investment advice. Rules were compared with the official documentation on Oct 19, 2026; check the source before you act on a number.