Protocol Fees

Starting on Oct 15, 2025, swaps on Mosaic include a tiny protocol fee. The fee is set by the Mosaic aggregator and is tiered by pair type. Fees can be taken from either the input token (“token in”) or the output token (“token out”), depending on the route.

What changes

• A small protocol fee applies to each successful swap on Mosaic.

• Fees are tiered by pair type and fixed by the aggregator.

• The router continues to optimize for the best executable price after fees.

How the fee is applied

Mosaic may collect the fee from:

1. Token in: a small portion of the input amount is taken before execution, and the remainder is swapped.

2. Token out: the full input is swapped, then a small portion of the received output is taken.

The router chooses the collection method that preserves the best executable quote for the user and avoids dust issues.

Protocol fee tiers

Pair type	Fee tier	Fee tier (bps)
Stable	0.01%	1
Correlated pairs	0.03%	3
Common pairs	0.05%	5
Others	0.1%	10

List of tokens:

Stables:

Token	Address
USDT.e	0x447721a30109c662dde9c73a0c2c9c9c459fb5e5a9c92f03c50fa69737f5d08d
USDC.e	0x83121c9f9b0527d1f056e21a950d6bf3b9e9e2e8353d0e95ccea726713cbea39
USDa	0x48b904a97eafd065ced05168ec44638a63e1e3bcaec49699f6b8dabbd1424650
USDe	0x9d146a4c9472a7e7b0dbc72da0eafb02b54173a956ef22a9fba29756f8661c6c

Correlated:

BTC

Token	Address
WBTC.e	0xb06f29f24dde9c6daeec1f930f14a441a8d6c0fbea590725e88b340af3e1939c
solvBTC	0x527c43638a6c389a9ad702e7085f31c48223624d5102a5207dfab861f482c46d
LBTC	0x0658f4ef6f76c8eeffdc06a30946f3f06723a7f9532e2413312b2a612183759c
stBTC	0x95c0fd13373299ada1b9f09ff62473ab8b3908e6a30011730210c141dffdc990
enzoBTC	0xff91f0df99b217436229b85ae900a2b67970eda92a88b06eb305949ec9828ed6

ETH

Token	Address
WETH.e	0x908828f4fb0213d4034c3ded1630bbd904e8a3a6bf3c63270887f0b06653a376
ezETH	0x2f6af255328fe11b88d840d1e367e946ccd16bd7ebddd6ee7e2ef9f7ae0c53ef
rsETH	0x51ffc9885233adf3dd411078cad57535ed1982013dc82d9d6c433a55f2e0035d
weETH	0xe956f5062c3b9cba00e82dc775d29acf739ffa1e612e619062423b58afdbf035

Common

Pairs of MOVE with

Token	Address
USDT.e	0x447721a30109c662dde9c73a0c2c9c9c459fb5e5a9c92f03c50fa69737f5d08d
USDC.e	0x83121c9f9b0527d1f056e21a950d6bf3b9e9e2e8353d0e95ccea726713cbea39
USDa	0x48b904a97eafd065ced05168ec44638a63e1e3bcaec49699f6b8dabbd1424650
USDe	0x9d146a4c9472a7e7b0dbc72da0eafb02b54173a956ef22a9fba29756f8661c6c
WBTC.e	0xb06f29f24dde9c6daeec1f930f14a441a8d6c0fbea590725e88b340af3e1939c
WETH.e	0x908828f4fb0213d4034c3ded1630bbd904e8a3a6bf3c63270887f0b06653a376