Short answer: run the sender's address through an AML risk-scoring service before you accept a large USDT payment, and prefer counterparties whose funds come from ordinary exchanges rather than mixers, darknet markets or sanctioned entities. Tether can freeze any USDT balance at the contract level, and once frozen it almost never comes back.
Freezing is not a theoretical risk
USDT is a centrally issued token, and the issuer keeps the ability to blacklist an address. That power is used regularly, not rarely. By late July 2026 Tether had blacklisted roughly 9,600 addresses across Ethereum and Tron, immobilising some $5.69 billion of value. During a single month in spring 2026, more than 950 addresses holding around $228 million were frozen — roughly 32 new addresses a day.
The part that matters most for ordinary users is what happens next. Of the $1.26 billion frozen during 2025, only about 3.6% was ever released. Treat a freeze as permanent when you plan around it.
What an AML risk score actually measures
Risk scoring tools trace where an address's coins came from, hop by hop, and map those sources to categories. The output is usually a 0–100 score plus a breakdown of the fund sources by share.
| Source category | Typical treatment |
|---|---|
| Licensed exchanges, payment processors, merchants | Low risk — normal commercial flow |
| Unknown wallets, new addresses | Neutral — no signal either way |
| Gambling, high-risk exchanges, P2P with no controls | Elevated — many services flag but accept |
| Mixers and coin-join services | High — frequently rejected outright |
| Darknet markets, ransomware, theft proceeds, sanctioned entities | Critical — expect refusal and possible freeze |
Two points are commonly misunderstood. First, the score is probabilistic, not a verdict: a moderate score usually means "we cannot fully account for these funds", not "you are a criminal". Second, exposure is indirect — an address can be flagged because coins two or three hops back touched a sanctioned service, even though the current holder did nothing wrong.
How to run the check
- Get the address before the transfer, not after. Ask the counterparty which address will pay you and check that one.
- Use a scoring service. Several providers offer a free basic report by address; paid reports add depth of tracing and named services.
- Read the composition, not just the number. A 30/100 driven by gambling exposure is a very different situation from a 30/100 driven by a sanctioned exchange.
- Check the receiving side too. If you are sending to an exchanger, its deposit address history tells you whether the service handles clean flow.
- Keep the report. If a platform later questions your deposit, a timestamped report showing you did due diligence helps.
Habits that keep your balance clean
- Do not consolidate. Merging a questionable payment into your main wallet spreads the taint to everything in it. Keep incoming business payments in separate addresses until they are cleared.
- Prefer services that publish an AML policy. A service that explains its thresholds is one that will tell you why a payment was paused instead of going silent.
- Be careful with anonymous P2P deals at above-market rates. An unusually good price is often the discount someone applies to funds they need to move.
- Split large settlements. Several ordinary-sized transfers from a known counterparty attract less automated attention than one outsized one.
If you already received suspect funds
Do not immediately push them through three wallets — chain-hopping is itself a risk signal and makes the eventual explanation harder. Instead: stop moving the balance, save every piece of evidence about the deal (invoice, chat, counterparty details), run a full report so you know what you are dealing with, and if the funds are business revenue, contact the platform you intend to use before depositing and ask how they handle it. Services differ enormously in tolerance, and the honest ones will tell you in advance.
What this means when choosing an exchanger
Every reputable service screens deposits; the difference is where the threshold sits and how the service behaves when a deposit trips it. The ones worth using state their policy, give you a reachable support channel, and return funds to the source address when they decline a swap. Compare services and their reviews on the exchangers list, and see how to vet a crypto exchanger for the full checklist.
FAQ
Can Tether really freeze my USDT?
Yes. Blacklisting happens in the token contract itself, so a frozen balance cannot be moved from any wallet or any network client. Around 9,600 addresses were blacklisted as of July 2026.
Is a frozen balance ever released?
Rarely. Of funds frozen during 2025, only about 3.6% was later unfrozen. Plan on the assumption that a freeze is final.
Does a high risk score mean I did something illegal?
No. Scores measure the history of the coins, not your conduct. Perfectly legitimate users receive flagged coins from counterparties all the time — which is exactly why checking before accepting matters.
Do exchangers check my address too?
Yes. Any service with banking or issuer relationships screens incoming deposits, and most will pause a swap rather than process flagged funds. That is normal practice, not a sign of a bad service.