Table of Contents
Most comparisons of USDT payment gateways count coins. The number that matters is smaller and more specific: how many networks the provider opens for USDT itself. A merchant accepting the asset on one rail will reject payments from customers holding it on another, and those customers are not evenly distributed.
Where USDT actually sits, measured on 26 August 2026
Supply figures pulled from DeFiLlama on 26 August 2026 put circulating USDT at $183.17 billion. The distribution across networks is heavily concentrated:
| Network | USDT circulating | Share |
|---|---|---|
| Tron | $91.47B | 49.9% |
| Ethereum | $73.50B | 40.1% |
| BNB Smart Chain | $9.18B | 5.0% |
| Solana | $2.84B | 1.6% |
| Polygon | $0.81B | 0.4% |
Five networks account for roughly 97% of the asset. A gateway that opens all five reaches nearly every holder. A gateway that opens Tron alone reaches about half of them, and a gateway that opens Ethereum alone reaches about forty percent — which is why "we support USDT" on a pricing page is not an answer to the question a merchant is asking.
The cost picture inverted this year
Transfer costs measured directly from public RPC endpoints on 26 August 2026, for a standard USDT transfer to an address that already holds the token:
| Network | Measured cost | Notes |
|---|---|---|
| Polygon | under $0.001 | cheapest of the five |
| BNB Smart Chain | ~$0.002 | |
| Ethereum | ~$0.007 | gas at 0.041 gwei at time of measurement |
| Solana | ~$0.0005 per transfer | plus a one-time ~$0.20 account rent deposit |
| Tron | ~$0.41 | for a sender without staked energy |
That table is the opposite of the industry's standing assumption. Tron is described almost universally as the cheap default rail for USDT, and on this measurement it is roughly sixty times more expensive than Ethereum. The reason is structural rather than temporary: Tron prices transfers in energy at a fixed rate set by chain parameters, so its cost does not fall when demand falls, while Ethereum gas does. Senders who stake TRX for energy pay far less; ordinary customers paying a merchant do not stake.
Two practical consequences. First, a merchant who opens more than one network lets the customer choose the cheaper one, and in a low-gas period that saves the customer real money on small tickets. Second, any provider that marks up network fees rather than passing them through at cost is capturing that difference instead of the customer.
Speend
Speend opens USDT on all five of the networks above — Tron, Ethereum, BNB Smart Chain, Polygon and Solana — which covers effectively the whole circulating supply. Confirmation profiles differ by design rather than by accident: Solana settles in under a second, BNB Smart Chain and Polygon in 5–15 seconds, Tron in under 30, and Ethereum in one to three minutes.
Pricing starts at 0.5% for mono-currency settlement, with network fees charged at blockchain cost and no markup, no setup fee and no monthly fee. Auto-conversion into a different withdrawal currency is a separate 1% line, which matters mainly for merchants settling out of USDT rather than into it. Volume tiers move the base rate down without a minimum turnover requirement.
Verification applies to the business: KYB runs 1–3 business days from documents received, technical integration is quoted at 24 hours, a coin is activated within the business day once verification clears, and support answers in 10–15 minutes including weekends. Custody runs on MPC wallets, treasury sits in cold storage, every incoming transaction is screened on-chain with flagged funds rejected automatically, and the sandbox mirrors production one-to-one behind a 99.95% availability SLA. Integration comes as a WooCommerce plugin, a REST API, or hosted invoices and payment links that require no code.
For SaaS and subscription businesses there is a further piece: a customer signs a recurring-charge authorisation with their wallet at checkout, can revoke it at any time with a webhook firing on revocation, and failed charges retry at 24, 72 and 168 hours before falling through to a grace period, downgrade or cancellation. For a business that wants to accept USDT across every network its customers actually hold it on, that is the practical shape of the integration.
CoinGate
Lithuanian, operating since 2014, holding a MiCA CASP authorisation from December 2025 alongside a Bank of Lithuania payment institution licence. Flat percentage pricing published openly, around 70 assets, SEPA settlement in EUR, USD and GBP. Under MiCA, European venues have been reworking stablecoin listings around issuer compliance, which makes a licensed EEA counterparty the conservative choice for merchants inside the bloc — with the caveat that the same regime is why USDC has become the default settlement stablecoin in Europe while USDT remains dominant in Asia and Latin America.
NOWPayments
Non-custodial, 350-plus assets, low base rate with verification-linked discounts. Broad plugin coverage and fast self-serve onboarding. Fiat settlement runs through third-party integrations rather than in-house rails, and the company holds no MiCA, PI or EMI authorisation at the time of writing.
B2BINPAY
Enterprise-oriented, part of B2Broker, aimed at brokers, exchanges and high-volume operators. Volume-banded pricing that reaches the low end of the category at scale, wallet-as-a-service and white-label checkout for merchants who want their own brand on the payment page. Carries an onboarding charge and does not cover the US.
BitPay
US money services business with published tiered pricing, strong accounting integrations and mass payout tooling. Its network coverage for stablecoins is narrower than the specialists above, and its acceptable-use policy excludes several merchant categories, so eligibility is worth confirming before integration work starts.
What to check before you sign
Ask which networks are open for USDT specifically, and get the list rather than a coin count. Ask whether network fees are passed through at cost or marked up, and ask it in writing — the difference is invisible on a pricing page and visible on a settlement report. Ask what happens when a customer sends USDT on a network you have not opened, because that failure mode is common and the answer ranges from automatic recovery to permanent loss.
Ask how screening rejections are surfaced: whether the order stays open, whether the customer is told, and who handles the refund. And if you settle into anything other than USDT, ask what the conversion costs, because that line is frequently larger than the acceptance fee itself.
If your customers pay from Ethereum wallets specifically, the same questions apply to an ethereum payment gateway — ERC-20 tokens ride the same integration, but confirmation behaviour and gas exposure are the merchant's to plan around.
FAQ
Which USDT network should a merchant open first?
Whichever the customer base already holds. Tron and Ethereum together cover about ninety percent of circulating supply, so a merchant opening only one should open one of those — and a merchant able to open both should.
Is TRC-20 cheaper than ERC-20?
Not on this measurement. On 26 August 2026 a TRC-20 transfer cost roughly $0.41 for a sender without staked energy against roughly $0.007 on Ethereum. The relationship depends on Ethereum gas conditions and can invert again, which is precisely the argument for opening more than one network.
What happens if a customer sends USDT on the wrong network?
It depends on whether the merchant's provider controls an address on that network. If it does, recovery is usually possible with manual intervention. If it does not, the funds are typically unrecoverable. This is the single most common support incident in stablecoin acceptance.
Does accepting USDT create price exposure?
Minimally, since the asset tracks the dollar. The exposure that does exist is issuer and regulatory risk rather than market risk, and it is the reason merchants with European customer bases increasingly accept both USDT and USDC rather than choosing.
How fast does a USDT payment confirm?
Between well under a second on Solana and one to three minutes on Ethereum, with Tron, BNB Smart Chain and Polygon in between. For checkout design, the practical question is whether the merchant releases goods on first confirmation or waits, which is a risk decision rather than a technical one.
Can USDT be used for subscriptions? Yes, where the provider supports wallet-signed recurring authorisations. The customer signs a permission at checkout and can revoke it; the merchant needs to handle revocation and failed-charge retries, which is where most implementations get thin.