Comparing Bridge Routes by Total Received

Bridges quote fees in different ways: a percentage, a flat amount, or embedded in the exchange rate. Comparing the quoted numbers compares different things.

The only comparable figure

Amount received at the destination, for a given amount sent from the source, in a common unit.

Everything else is a component of that, and components that are not disclosed do not appear in a fee comparison.

The method

Step one. Pick the exact amount you intend to move.

Step two. Enter it in each route’s interface and record the quoted output. Not the fee, the output.

Step three. Add the source chain transaction fee to your cost, from the wallet estimate.

Step four. Compare final received amounts.

Step five. For a route that requires two steps, such as through a venue, price both steps.

What this reveals that fee comparison does not

Rate-embedded margins. A bridge quoting no fee while offering a rate slightly worse than market is charging a fee it does not call one.

Slippage on pool-based routes. Which scales with your amount relative to available liquidity, and is therefore invisible in a general comparison and material in a specific one.

Wrapped asset discounts. Where a route delivers a wrapped version trading below the native asset.

Destination fees absorbed into the rate.

The routes to include

The canonical bridge for the chains in question.

One or two third-party fast bridges.

The venue route: withdraw to a venue supporting both chains, then withdraw onward. Costs two withdrawal fees, published in advance by venues such as an exchange with a published withdrawal schedule, and carries no bridge risk.

Aggregators that route across several bridges automatically are worth including as a fourth, with the caveat that they add their own margin.

The finding that recurs

For amounts above a few hundred units of currency, the venue route has frequently been cheapest in our comparisons, and it is always the lowest risk.

For small amounts, the fixed withdrawal fees dominate and a bridge wins.

The crossover depends on the specific fees and moves, which is why the comparison is worth running per transfer rather than deciding once.

The risk column

Cost is not the only axis. Bridges have been the most exploited category of infrastructure in this sector, and a fast bridge additionally carries the operator’s solvency risk for the period it fronts the funds.

A route that is marginally cheaper and carries bridge risk is not obviously better than one that is marginally more expensive and does not. That judgement belongs to you and it should be made with both numbers in front of you.