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Your Safe is on Polygon, but you do not have to withdraw on Polygon. You can send USDC from your Safe to an address on Ethereum, Base, Arbitrum or Optimism with one signature. It is moved through Circle’s own bridge and arrives as native USDC at the address you entered, on the network you chose.
Withdrawing on Polygon is unchanged: no fee, no minimum, usually confirmed within a minute. Many exchanges accept USDC on Polygon — check yours before choosing another network. Everything on this page is about the other networks.

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Supported networks

The withdraw form shows the minimum, the fee, what you receive and the arrival time for the network you pick, before you sign. If it and this page ever disagree, the form is right.
Check the address and the network. A withdrawal cannot be reversed. The address must be able to receive native USDC on the network you pick: if it is an exchange deposit address, the exchange must accept USDC on that network; if it is a smart-contract wallet, it must exist at that address on that network. USDC sent to an address that cannot use it is not recoverable by Calibri.

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How it works

1

You choose the network, amount and address

On the Wallet page, pick the network in the withdraw form and enter the amount. With a passkey wallet you also enter the destination address; with your own wallet, the withdrawal goes to that wallet’s address, as on Polygon.
2

You see the fee before you sign

The form shows the fee, what you receive, the minimum and the expected time. The figures are valid for a few minutes. If they lapse or change before your withdrawal is sent, you are shown the new fee and asked again — nothing leaves your Safe in the meantime.
3

You sign once

One passkey prompt, or one signature from your wallet. What you sign is a single Safe transaction on Polygon that does three things: pays the fee to Calibri’s treasury, approves Circle’s contract to take the rest, and hands the rest to Circle’s Cross-Chain Transfer Protocol (CCTP) with your address on the chosen network as the only recipient.
4

It leaves your Safe on Polygon

Calibri relays the transaction and pays the Polygon gas. The fee is taken before the burn, in USDC on Polygon; Circle burns the rest. Your balance is reduced by the full amount — fee plus what is sent — once it confirms, and resting orders that relied on those funds are cancelled, as with any withdrawal.
5

Circle attests the burn

Circle waits for the burn to be final and signs an attestation. This is most of the wait — it is Circle’s Standard transfer, which Circle does not charge for today.
6

It arrives on the other network

Calibri submits the attestation on the destination network and pays the gas there. Circle mints the same amount of native USDC directly to your address.

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What the Wallet page shows

  • A network picker in the withdraw form — Polygon first, which is the ordinary withdrawal, then the other networks. For another network the form shows the fee, what you receive, the expected time and the minimum.
  • Withdrawals in progress, under the form — each withdrawal on its way out, from the burn on Polygon to delivery at your address, and each one finished in the last day.
  • A withdrawal waiting on gas, if gas rose after you sent it, with the time by which it will be completed. See If gas rises after you send it.
If a withdrawal stops, it says so. Contact support and quote the transaction.
If the network picker offers only Polygon, withdrawals to other networks are not available for your wallet. Withdraw on Polygon.

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Fees, minimums and timing

The fee covers the cost of the withdrawal — the transaction on Polygon and the delivery on the destination network — plus a margin. It is not a trading fee and is not shared with makers or referrers.
  • One fee per withdrawal, taken before the burn, in USDC on Polygon. The rest is what arrives at your address.
  • A minimum fee of 3 USDC on Ethereum and 0.50 USDC on Base, Arbitrum and Optimism. When the cost is lower, the minimum applies.
  • No maximum. The fee follows gas on the destination network, and on Ethereum that can be high. It is always the figure shown before you sign — you are never charged more than that.
  • Minimum withdrawals are 20 USDC to Ethereum and 5 USDC to Base, Arbitrum and Optimism. The form does not offer a withdrawal below the minimum, or one where the fee would take the whole amount.
The fee is priced for gas higher than now, so that delivery is still covered if gas moves while the transfer is on its way. Circle charges nothing for Standard transfers today; if that ever changes, Circle’s own fee would come out of the amount it mints. Timing. About 15–20 minutes, and longer during Ethereum congestion. Most of that is Circle’s finality wait, not ours: Circle attests a Standard transfer only once the burn is final.
Withdraw on Polygon to avoid this fee. A withdrawal on Polygon has no fee and no minimum, and many exchanges accept USDC on Polygon.

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If gas rises after you send it

The fee is fixed when you sign. If gas on the destination network rises so far after that that delivering now would cost more than your fee covers, we hold the delivery instead of charging you again:
  • The withdrawal shows as waiting, with the time by which it will be completed.
  • We re-check every 10 minutes and deliver as soon as the cost is covered again.
  • At the latest six hours after it starts waiting, we deliver it at our own cost, whatever gas is doing then.
  • You are never charged more than the fee you signed for.
Your USDC is not at risk while it waits: the burn has already named your address as the only recipient, and anyone — including you — can complete the delivery (see Delivering it yourself).

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Delivering it yourself

Delivery on the destination network is open to anyone. Once Circle has attested the burn, the attestation is public, and anyone can submit it to Circle’s contract on that network. Circle then mints the USDC to the address named in the burn — whoever submits it cannot change that address. You would do this yourself if Calibri were unreachable, or if you do not want to wait:
1

Find the burn transaction

The Polygon transaction that left your Safe. The Wallet page links to it from Withdrawals in progress.
2

Fetch Circle's attestation

From Circle’s public attestation service, for source domain 7 (Polygon) and that transaction hash. It returns the message and the attestation once Circle has signed it.
3

Submit it on the destination network

Call receiveMessage(message, attestation) on Circle’s MessageTransmitterV2 on that network, from any account with a little gas there. Circle mints the USDC to your address.
We deliver only withdrawals made through the withdraw form, with the fee it shows. A burn you send any other way — for example a transfer you build yourself, or one that pays less than the minimum fee — is recorded against your balance but not delivered by Calibri. Your USDC is still yours: deliver it yourself with the steps above.

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Why this is still non-custodial

A withdrawal to another network is your transaction, exactly like a withdrawal on Polygon. Here is what that means in practice.
  • You sign the burn. Nothing leaves your Safe without your signature. The fee, the amount and the destination are all inside the transaction you sign.
  • The destination is in the signed message. Your address on the chosen network is written into the Circle burn you sign, and Circle mints only to that address. Calibri cannot redirect it — not before it is sent, because that would change what you signed, and not after, because the burn and Circle’s attestation fix the recipient.
  • No module, no Calibri contract. Unlike deposits from other networks, a withdrawal does not use the bridge module. Your Safe calls Circle’s messenger directly, batched through Safe’s own MultiSendCallOnly contract, which can make only plain calls. The batch is exactly three calls: the fee to Calibri’s treasury, the approval to Circle, and Circle’s burn.
  • Calibri relays only what it quoted you. The batch is built with your quote, and Calibri relays it only if what you signed matches that quote exactly, once. It pays the gas on Polygon and on the destination network.
Circle is trusted here in the same way it is trusted with USDC itself: it issues the token, and it runs the bridge that burns and mints it.
Your Safe only. Withdrawals to other networks are available from your Safe. They are not available for a custodial balance — one Calibri holds for you — which withdraws on Polygon only.

Deposits from other networks

The other direction: USDC sent to your address elsewhere, bridged to Polygon.

Fees

The trading fee, and the bridge fees in both directions.

The Safe

What your Safe is, and what can act on it.

Withdrawing without Calibri

Moving funds out of your Safe if Calibri is unreachable.