Accept DAI Payments: DAI vs USDT vs USDC for Merchants

Yes, you can accept DAI, and on our gateway it costs nothing extra to switch on: DAI runs on the same flat 0.8% per transaction as every other asset we support, on ERC-20 only. The honest part of the answer is what comes next. DAI will almost certainly be the smallest line in your crypto revenue, and you should turn it on for reasons that have nothing to do with volume.

Here is the number that frames the whole decision. Checked on 7 September 2026 against DefiLlama’s stablecoin tracker, DAI’s circulating supply is about $4.81 billion, against $74.4 billion for USDC and $183.4 billion for USDT. DAI is roughly 2.6% the size of USDT. If your checkout treats all three as equal options, you are giving equal shelf space to an asset with a fraction of the holder base.

So the useful question is not “should I accept DAI” but “which of my customers pays in DAI, and what do they get from it that USDC does not give them.” That has a real answer, and it comes down to one structural difference: nobody can freeze a DAI balance at the token contract. Whether that matters to you is the decision. We sell a payment gateway, so weigh the recommendation accordingly. Every number below comes with a source and a date.

What DAI actually is, from a merchant’s seat

USDC and USDT are issuer liabilities. A company holds reserves, mints tokens against them, and stands behind a redemption promise. DAI is not that. DAI is minted by anyone who locks collateral into the Sky protocol (formerly MakerDAO) at more than 100% of the value borrowed, and burned when that debt is repaid. There is no company holding dollars for you to redeem against.

Two consequences follow, and they pull in opposite directions.

The first is that the DAI token contract has no issuer-controlled blacklist or freeze function. There is no address that can immobilise your balance. BlockSec’s 2026 review of freeze capabilities across stablecoins puts it precisely: DAI is not admin-freezable, but it is governance-mutable. The DAO can change protocol parameters at emergency speed; it cannot reach into your wallet.

The second is that “decentralised” describes the issuance mechanism, not the collateral. A large share of the collateral backing DAI is USDC held in the Peg Stability Module, a facility that swaps USDC for DAI one-for-one so arbitrageurs can defend the peg. Independent 2026 breakdowns of Sky’s balance sheet put the USDC share somewhere around a third, with the rest split between tokenised treasury exposure and crypto collateral such as ETH and wstETH. The exact ratio moves with governance votes, so treat any single figure as a snapshot rather than a constant, including that one.

That second point is the one most comparison articles skip, and it has a direct merchant consequence covered further down: holding DAI does not diversify you away from USDC risk.

DAI vs USDT vs USDC, from the receiving end

Most stablecoin comparisons are written for holders. This one is written for whoever has to reconcile the incoming payment.

What you are comparing	DAI	USDC	USDT
Backing model	Overcollateralised, minted against locked collateral in the Sky protocol	Issuer reserves held by Circle	Issuer reserves held by Tether
Can the issuer freeze a balance?	No blacklist function at the token contract; governance can change protocol parameters	Yes, admin-controlled blacklist	Yes, owner-only freeze and blacklist functions
Networks we support for it	ERC-20 only	ERC-20 and TRC-20	ERC-20 and TRC-20
Circulating supply (DefiLlama, 7 Sep 2026)	~$4.81B	~$74.4B	~$183.4B
Behaviour in the March 2023 SVB episode	Fell to roughly $0.89, tracking USDC downward through PSM exposure	Sharpest deviation from peg of the major stablecoins	Absorbed inflows as the alternative liquidity destination
Buyer-side network fee on the rail we support (measured 31 Aug 2026)	About $0.02 (ERC-20)	About $0.02 (ERC-20) or $2.11–$4.36 (TRC-20)	About $0.02 (ERC-20) or $2.11–$4.36 (TRC-20)
Who your buyer probably is	DeFi-native, holds it deliberately, often for censorship-resistance reasons	US-facing, institution-adjacent, treats it as digital dollars	Non-US, exchange-native, largest retail base by far
Realistic role in your checkout	A supplementary option that signals something about your stance	A primary option	A primary option

Freeze risk: what it actually means when you are the one receiving

The freeze capability is real and it is used at scale. In an announcement dated 23 April 2026, Tether described freezing more than $344 million in USDT in coordination with OFAC and US law enforcement, and put its cumulative total at more than $4.4 billion frozen across 2,300 cases with agencies in 65 countries. Circle exercises the equivalent power on USDC, most visibly when it blacklisted the USDC sitting at Tornado Cash addresses after the US Treasury sanctioned the mixer in August 2022.

Now be precise about how that reaches an ordinary merchant, because the scary framing is usually wrong. Nobody is going to freeze your store’s wallet for selling shoes. The realistic exposure is narrower and duller:

• You receive a payment, and weeks later the funds upstream are tied to a sanctions action. The balance sitting at your address gets caught in the blacklist that follows. You did nothing wrong and the money is still immobile.
• You operate somewhere that a US issuer may eventually be compelled to restrict, which makes your working balance in a US-issued stablecoin a policy decision taken by someone else on your behalf.
• Some buyers will not hold a freezable asset at all. For them, offering only USDC and USDT is offering nothing.

DAI removes the first two vectors at the token layer, because there is no function to call. It does not remove them from the world. If your bank, your accountant, or your jurisdiction takes an interest in the funds, DAI’s contract design is not a shield; it just means the constraint arrives through a different door. And it introduces a replacement risk: your balance now depends on a DAO’s collateral management rather than a company’s reserve management. Both are counterparty risk. They are simply different counterparties. We work through the same trade-off at the custody layer in our comparison of custodial versus non-custodial payment gateways, and the logic is identical: you are not eliminating risk, you are choosing whose failure can reach you.

The depeg record, and why it does not mean what people think

DAI has broken its peg. On 11 March 2023, during the Silicon Valley Bank failure and the resulting USDC depeg, DAI fell to lifetime lows around $0.89 while USDC traded near $0.88. Sky governance responded within the same crisis window by raising the PSM’s USDC swap fee from 0% to 1% and cutting the USDC facility’s available debt by 700 million DAI, throttling the arbitrage path that was dragging DAI down. Both assets recovered as the FDIC backstop became clear.

The academic post-mortem is worth reading if you want the transaction-level view: a June 2026 arXiv study tracing stablecoin contagion during that window maps how stress propagated between assets and shows USDT functioning as the alternative liquidity destination while USDC took the sharpest hit.

Here is the merchant-relevant reading, and it is not “DAI is riskier.” It is this: DAI’s worst depeg was caused by USDC’s depeg. The PSM that keeps DAI pinned to a dollar in normal conditions is also the channel that transmitted USDC’s failure into DAI within hours. A merchant who spread balances across USDC and DAI to reduce issuer concentration risk discovered on that day that they had bought considerably less diversification than they thought.

What this changes operationally is small but concrete: your depeg exposure is the window between accepting payment and converting out. If you settle to your own wallet and swap on a schedule, that window is measured in hours or days and DAI’s history says you should size it accordingly. If you hold stablecoin balances as working capital for weeks, the correlation above is the thing to price, not the peg mechanism in isolation.

Cost: DAI is ERC-20 only, and that is good news

DAI on our gateway is Ethereum mainnet only. There is no Tron version to choose, which removes a decision your buyer would otherwise get wrong.

On 31 August 2026 we measured what an ERC-20 stablecoin transfer actually costs a sender, using two independent tools cross-checked against three RPC endpoints, sampling Ethereum base fee across 1,024 blocks (median 0.116 gwei) and pulling Tron’s energy price directly from the chain parameters endpoint (100 sun per unit of energy). The result: an ERC-20 transfer cost about $0.02, while the same transfer on TRC-20 cost $2.11 to $4.36. That is roughly a hundred times more expensive on Tron than on Ethereum, which inverts what almost every gateway comparison page still asserts, including older pages on this site that we are working through.

Two caveats, stated plainly. We measured USDT and USDC transfers, not DAI specifically; DAI is a standard ERC-20 transfer paying the same base fee on the same network, so the order of magnitude carries over, but we have not separately benchmarked it. And network fees are paid by the sender’s wallet in ETH, not deducted from the tokens, so the buyer needs a small ETH balance to pay you at all. That is a genuine friction point for a first-time crypto buyer, and it applies identically to USDT on ERC-20 and TRC-20. If you want the full mechanics of Ethereum-rail payments, our guide to accepting Ethereum payments in an online store covers confirmation handling and address hygiene.

The USDS trap nobody warns you about

This is the one thing in this article that will bite a real merchant this quarter.

In August 2024, MakerDAO rebranded to Sky and shipped a second stablecoin, USDS, with DAI holders able to upgrade to USDS at a 1:1 ratio. DAI was not retired and still circulates. But USDS has since overtaken it in size, sitting around $6.6 billion against DAI’s $4.81 billion on the same DefiLlama snapshot, and a large share of DAI’s most active holders, exactly the DeFi-native buyers who would use it at checkout, have moved.

We support DAI. We do not support USDS. They are different tokens at different contract addresses, and USDS additionally carries an explicit freeze function that classic DAI does not have, which quietly undoes the main reason a buyer chose DAI in the first place.

The practical failure mode: a customer sees “DAI accepted,” sends USDS to the Ethereum address on your invoice, and the payment does not register as the invoice asset. So if you enable DAI, say DAI (ERC-20) in your checkout copy and in your accepted-assets policy, never “Sky stablecoin” or “MakerDAO stablecoin.” That one word of precision is the highest-value thing on this page.

A decision rule, not a list of considerations

Turn DAI on if any two of these are true:

• You already accept USDC or USDT on ERC-20. DAI then adds no new address type, no new confirmation policy and no new reconciliation path, which puts the marginal operational cost at close to zero.
• Your customer base skews DeFi-native: you sell developer tooling, security services, hardware wallets, node infrastructure, privacy-oriented products, or you take payment from DAOs and protocol treasuries.
• You have had at least one customer ask for a non-freezable settlement asset. One explicit request is worth more than any market-share statistic, because it is demand you can actually see.
• Your average order value is high enough that a handful of DAI payments a month is material revenue rather than a rounding error.

Do not bother if:

• Your checkout already shows more than four or five payment options. Adding a sixth with a 2.6% relative holder base costs you conversion through choice paralysis and buys you almost nothing. Trim before you add.
• You are launching crypto payments this month. Start with USDT and USDC, learn your reconciliation flow, and revisit in a quarter. Our breakdown of USDT versus USDC for merchants is the right first decision.
• Your buyers are mostly non-crypto-native retail. They will hold whatever their exchange gave them, and that is not DAI.
• You were hoping DAI hedges your USDC exposure. Re-read the depeg section — it does not.

What enabling it actually involves

On our side DAI is a per-asset toggle in the merchant dashboard, not a separate integration. Same 0.8% per transaction, same non-custodial settlement straight to your own wallet with no intermediary account in the path, same plugin. If you already run our Shopify custom app or WooCommerce plugin, nothing about your setup changes; a DAI invoice quotes an Ethereum address exactly like a USDC ERC-20 invoice does. The step-by-step enablement lives on our DAI payment gateway page.

Two boundaries to set expectations honestly. We do not convert to fiat. You receive DAI and swap it yourself, wherever you normally do that, which means the swap venue’s DAI liquidity is your real constraint rather than anything on our side. And we support DAI on ERC-20 and nowhere else; there is no Polygon, Arbitrum, Base or BSC version of this on our gateway.

DAI is a supplementary option for most merchants and a deliberate one for a few. If you are still deciding which assets belong on your checkout at all, our comparison of crypto payment gateways works through the fee, custody and asset-coverage trade-offs side by side, with the same sourcing discipline applied to competitors as we have applied to ourselves here.