Should I use Tron or Ethereum to send USDT?▼
For amounts under ~$5,000, Tron (TRC20) is almost always cheaper because of its sub-dollar network fees. For larger amounts where the spread becomes the dominant cost, Ethereum (ERC20) sometimes wins because more exchanges offer competitive ERC20 rates. opta surfaces both networks side-by-side when an exchange supports them.
Why does the BRL amount I receive vary between exchanges?▼
Three factors drive the difference: each exchange sets its own USDT/BRL spread (typically 0.1-1.5% off the market rate), network fees vary by chain and exchange, and some exchanges charge an additional withdrawal or platform fee. A 0.5% spread difference on a $10,000 transfer is roughly R$250 — material enough to be worth comparing.
How fast does the BRL arrive in my bank account?▼
If the exchange supports PIX, settlement is typically near-instant — under 30 seconds from order completion. If you're using TED, expect same-day settlement during banking hours (until 5pm BRT) or next business day. The on-chain leg adds 1-3 minutes on Tron, 30 seconds to 5 minutes on Ethereum depending on gas, and seconds on Solana.
Is this comparison ordered by commission?▼
No. opta is independently audited and ranks results purely by total cost to you. We do not accept commissions from exchanges to influence ranking, and any sponsored placements (when they exist) are clearly labeled as 'Ad' and shown separately from the organic comparison. See our methodology page for the full ranking SQL.
What happens if the rate changes mid-transfer?▼
Most exchanges quote a rate at the moment you confirm the trade and lock it for execution. If you initiate a USDT deposit and the rate moves before your deposit confirms on-chain, you'll get the rate at the time the deposit credits, which may be different from the original quote. Larger amounts and more volatile market conditions amplify this risk. Consider exchanges that offer rate-locking or limit orders for transfers above $10,000.
Are there limits on how much USDT I can convert to BRL?▼
Yes — limits are set per-exchange and depend on your KYC tier. Brazilian regulations require exchanges to report transfers above R$30,000/month to the federal tax authority (Receita Federal). Most major exchanges allow conversions up to R$100,000-1,000,000 per day after full KYC verification. Always confirm the limit on your specific exchange before initiating a large transfer.