Learn · Fees

Understanding aggregator and protocol fees

Written by XAUConnect Labs · Reviewed against live product behavior · Updated August 2026

Every swap carries more than one cost, and traders who lump them together end up confused about why their output is lower than the headline rate. There are three distinct fees in play on a typical aggregated swap: the pool fee charged by the liquidity protocol, the platform fee charged by the aggregator, and the network gas paid to validators. Knowing what each one is, who collects it, and how it scales with your trade lets you read a quote accurately and minimize total cost. This article breaks them apart.

Pool (protocol) fees

Every swap through a liquidity pool pays a fee to that pool's protocol, distributed to the liquidity providers who fund it. This fee is a percentage of the trade and often comes in tiers — lower for stable, predictable pairs and higher for volatile ones to compensate providers for risk. On a multi-hop route, you pay a pool fee on each hop, which is why the number of hops affects your net result. This fee scales with trade size.

Aggregator (platform) fees

The aggregator that finds your route and routes the transaction may charge its own platform fee for the service. This is separate from the pool fee and is how the aggregator operates. A good aggregator earns its fee by finding routes that save you more than it charges — better net output, even after the platform fee, than you would get trading a single pool yourself. On supported chains, XAUConnect lets this fee be paid in USDC rather than the native coin.

Network gas

Gas is paid to the chain's validators to process the transaction and is unrelated to the other two fees. Unlike pool and platform fees, gas is roughly fixed per transaction rather than proportional to trade size, so it weighs heavily on small trades and barely registers on large ones. Gas must be paid in the chain's native coin, which is why you always keep a native-coin buffer regardless of how platform fees are denominated.

Reading total cost

Your true cost is the sum of pool fees across every hop, the platform fee, the gas, and any price impact from your size. The cleanest way to evaluate a swap is to ignore the individual line items and look at the minimum received — the tokens you are guaranteed after everything. Comparing minimum received across routes and across moments tells you the real cost far more reliably than any single advertised rate.

Why "zero-fee" claims mislead

Be skeptical of interfaces advertising zero fees. A platform can waive its own fee and still deliver worse output through a poorer route, wider price impact, or an unfavorable internal spread — costs that never appear as a line item but reduce what you receive. Because pool fees and gas are unavoidable regardless of the front end, the only honest comparison is net output. Judge any "free" claim by the minimum received, not the absence of a visible fee.

Legal

Risk disclosure

XAUConnect is a non-custodial swap aggregator. Digital assets are volatile and may lose value rapidly. Content on this page is educational and not investment advice. Verify every contract address on the official block explorer before approving a transaction.

Frequently asked questions

What fees are on a typical swap?

Three: the pool fee paid to liquidity providers, the aggregator's platform fee for routing, and network gas paid to validators. Price impact from your size adds to the effective cost.

How is the platform fee different from the pool fee?

The pool fee goes to liquidity providers on each hop and scales with size; the platform fee is the aggregator's charge for finding and routing your trade.

Why does gas hurt small trades more?

Gas is roughly fixed per transaction rather than proportional to size, so it is a large share of a small trade and a tiny share of a large one.

What is the simplest way to compare total cost?

Look at the minimum received — the tokens guaranteed after all fees, gas, and impact — rather than trying to add up individual line items.

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