Best crypto relayers in Austria
Coinbase CDP Server Wallets (API-key wallets) ranks highest in ChainChoice’s published relayers ranking among the providers that list Austria — A backend API. Flat 27.5% capital gains rate — no holding-period exemption. Tax loss harvesting is possible against other capital gains.
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Reviewed means every product ranked on this page was read against its sources on or after that date; every ranked category is re-read at least every 45 days. Models research, extract and parse. A deterministic engine ranks. Every quote passes an adversarial refute pass.
Accountable for this review: Mathias Siemonsmeier, Founder.
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Which crypto relayer service should Austria residents use in November 2026?
Coinbase CDP Server Wallets (API-key wallets) ranks highest in ChainChoice’s published relayers ranking among the providers that list Austria — A backend API. The order is the published ranking itself; providers whose terms exclude Austria are removed. Check authorisation with FMA before depositing.
- Austria residents holding capital in EUR
- Users who need FMA-aligned compliance and audit-grade reporting
- Buy-and-hold profiles benefiting from Austria's tax treatment
- Sophisticated retail and family-office treasurers
- Derivatives / perpetuals traders (use a regulated futures venue instead)
- Privacy-focused users avoiding KYC (these are licensed venues)
- Day-traders chasing the lowest spreads regardless of regulator posture
- Anyone needing a service FMA does not currently authorise
General guidance for Austria: the ranking engine does not compute these notes and they do not change the order below. If none fits you, answer the Find My Best questions for a result for your profile.
7 relayers listed for Austria
In ChainChoice’s published ranking order, from this category’s 7 providers: those whose terms exclude Austria are removed; those silent on it come last. Each chip names the basis: a dated check, a region listing, or the provider's own claim.
#1 for AustriaCoinbase CDP Server Wallets (API-key wallets)#1 globallyProvider states broad availability A backend API that creates EOAs whose private keys are generated inside Coinbase's AWS Nitro Enclave TEE, then signs and broadcasts transactions from them on seven EVM mainnets and Solana, with import and export of the raw private key both exposed as REST endpoints.
What a stolen API credential can do before anyone notices — 10/10What the relayer is authorised to do, and whether you can keep the address — 9/10Where the gas float sits and how you get it back — 8/10#2 for AustriaPrivy server wallets#2 globallyProvider states broad availability A REST/SDK service that generates or imports secp256k1 and Ed25519 keys into a TEE, holds them under an app-held P-256 authorization key (optionally an m-of-n key quorum), and signs and broadcasts transactions from those addresses on request from the buyer's backend — with gas paid by default from the wallet's own native balance, or optionally sponsored from a prepaid app-level gas-credits balance, or collected on-chain from the wallet's stablecoin balance by an ERC-20 paymaster in 'User pays' mode.
What the relayer is authorised to do, and whether you can keep the address — 9/10What a stolen API credential can do before anyone notices — 9/10#3 for AustriaOpenZeppelin Relayer#3 globallyProvider states broad availability An AGPL-licensed Rust service a backend team runs itself to submit transactions from its own EOA on EVM, Solana and Stellar networks, where the signing key stays in the buyer's own keystore file, HashiCorp Vault, AWS KMS, Google Cloud KMS, Turnkey or Coinbase CDP account rather than in a vendor's vault.
What the relayer is authorised to do, and whether you can keep the address — 10/10Where the gas float sits and how you get it back — 9/10#4 for AustriaSequence Transactions API (Relayer)#4 globallyProvider states broad availability A hosted relayer that accepts a signed Sequence smart-contract-wallet transaction bundle from a backend, fronts the network gas either from a Builder-funded sponsorship balance or from an ERC-20 fee transaction included inside the bundle, and submits it on chain-specific relayer hosts (52 published in the vendor's OpenAPI servers block, of which 21 mainnet hosts answered live on 11 August 2026).
What the relayer is authorised to do, and whether you can keep the address — 9/10Where the gas float sits and how you get it back — 7/10#5 for AustriaCircle Gas Station#5 globallyProvider states broad availability Circle fronts network fees for transactions sent from Circle-hosted Programmable Wallets — through a Circle-owned, upgradeable ERC-4337 paymaster proxy on EntryPoint v0.6 on its supported EVM mainnets and fee-payer accounts on Solana and Aptos — governed by console-configured gas-spend policies and billed back to the developer's card after the fact.
Where the gas float sits and how you get it back — 8/10Exactly-once execution and stuck-queue recovery — 7/10#6 for AustriaOpenfort backend wallets#6 globallyProvider states broad availability A custodial server-side signer: Openfort generates and holds an EVM or Solana private key inside a GCP Confidential Space TEE, exposes sign/import/export over a REST API gated by a fail-closed rule-based policy engine, and can also submit transactions for that wallet via EIP-7702 delegation — a send the policy engine sees only as signEvmHash, so its transaction rules do not run — with gas optionally sponsored from a prepaid project credit balance.
What the relayer is authorised to do, and whether you can keep the address — 9/10Where the gas float sits and how you get it back — 7/10#7 for AustriaGelato Relay#7 globallyProvider states broad availability A hosted meta-transaction relay, as last documented on 2026-08-11: the buyer's backend posts a target address and calldata to Gelato's JSON-RPC API with an API key, and Gelato's executors front the gas and submit the transaction, billing a prefunded USDC "Gas Tank" balance held on Polygon.
What the relayer is authorised to do, and whether you can keep the address — 7/10What a stolen API credential can do before anyone notices — 6/10
Commission: None of these providers pays ChainChoice anything for these links. Disclosure
Provider links appear once we know which country you are browsing from: ChainChoice links to providers only where it serves in full.
Crypto products are high risk. Check the provider is authorised where you live before you deposit.
- Liveness failure: the operator stops, censors you or loses data.Scored by Exactly-once execution and stuck-queue recovery · 26% (Coinbase CDP Server Wallets (API-key wallets) 7/10, Privy server wallets 7/10, OpenZeppelin Relayer 6/10)
- Custody failure: whoever holds the assets loses or withholds them.Scored by What the relayer is authorised to do, and whether you can keep the address · 32% (Coinbase CDP Server Wallets (API-key wallets) 9/10, Privy server wallets 9/10, OpenZeppelin Relayer 10/10)Scored by What a stolen API credential can do before anyone notices · 22% (Coinbase CDP Server Wallets (API-key wallets) 10/10, Privy server wallets 9/10, OpenZeppelin Relayer 3/10)Scored by Where the gas float sits and how you get it back · 20% (Coinbase CDP Server Wallets (API-key wallets) 8/10, Privy server wallets 7/10, OpenZeppelin Relayer 9/10)
Each cell is verified against the provider's filings or the FMA register; a gap shows "—", never an estimate.
| Provider | Taker fee in Austria | KYC tier | EUR rails | FMA license |
|---|---|---|---|---|
| #1Coinbase CDP Server Wallets (API-key wallets) | — | — | — | — |
| #2Privy server wallets | — | — | — | — |
| #3OpenZeppelin Relayer | — | — | — | — |
| #4Sequence Transactions API (Relayer) | — | — | — | — |
| #5Circle Gas Station | — | — | — | — |
Source: ChainChoice provider catalog cross-referenced with the FMA register; each fee as of its entry's latest verification (accuracy methodology).
Is using a crypto relayer service legal in Austria?
Yes. Austria regulates crypto-asset service providers under MiCA (EU Regulation 2023/1114), enforced from 30 December 2024. FMA oversees relayers operating in Austria; only providers authorised under MiCA may serve retail clients.
How is crypto taxed in Austria?
Since 2022, crypto income is taxed at a flat 27.5% (special tax rate for capital gains). No holding-period exemption. Editorial summary, not tax advice: consult a qualified tax advisor in Austria before filing.
What payment methods work for buying crypto in Austria?
The most common rails for retail onramps in Austria are: SEPA, SEPA Instant, EPS. Most regulated platforms support at least the first of these. Card payments may incur 2-4% fees vs. ~0.5% for bank transfers.
Are international platforms (Coinbase, Kraken, Binance) available in Austria?
Most major platforms have completed MiCA licensing for the EU and serve Austria via passporting. Availability of specific products (staking, derivatives) may vary by member state — the shortlist above filters by what each platform actually offers to Austria residents.