StealthEX vs FixedFloat 2026: Which for Monero?

On 18 February 2024, FixedFloat woke up to an empty vault. Attackers drained roughly $26.1 million in Bitcoin and Ether, the front-end went dark for days, and one of the most popular registration-free swap services suddenly had a credibility problem. Two years on, the platform is rebuilt and running — but the episode still shapes how privacy-minded traders compare it to its biggest rival, StealthEX.

The comparison matters more than ever because the easy options keep disappearing. Binance delisted Monero in February 2024; Kraken cut XMR for European users by the end of that year; OKX and several smaller venues followed. For anyone who wants to convert Bitcoin or USDT into Monero without uploading a passport, instant non-custodial swappers are now the default route — and StealthEX and FixedFloat are the two names that come up first. This guide breaks down how each one actually behaves in 2026, where the real differences lie, and how a Monero-focused aggregator like MoneroSwapper fits between them.

Why the StealthEX vs FixedFloat question matters in 2026

Both services solve the same core problem: swap one coin for another in minutes, no account, no email required for a basic trade. But "no account" is not the same as "no risk," and the two platforms make very different trade-offs on speed, fees, transparency, and how aggressively they screen transactions.

• Monero is harder to buy on regulated venues: with XMR delisted from most KYC exchanges across the EU, UK, and parts of Asia, swap services have become the primary on-ramp. Picking the wrong one can mean a frozen order or a worse rate than you expected.
• "No-KYC" is conditional, not absolute: both StealthEX and FixedFloat run automated risk scoring on incoming funds. A swap can proceed instantly — or trigger an identity request mid-trade if your coins touch a flagged source.
• Fee structures are not comparable at face value: one platform bakes its margin into the quoted rate, the other shows an explicit percentage. You have to read both to know what you actually pay.
• Security history is now part of due diligence: after the 2024 FixedFloat breach, "where do my coins sit during the swap, and for how long" is a fair question to ask of any non-custodial service.

How each exchange actually works

On the surface the flow is identical. You pick a pair, paste your receiving address, send the input coin to a one-time deposit address, and the service sends the output coin back. Under the hood, the architecture and the business model differ.

StealthEX: the liquidity aggregator

StealthEX launched in 2018 and works as an aggregator. Rather than holding deep order books itself, it routes your trade to partner exchanges and liquidity providers, then returns the best available quote. That gives it enormous coverage — over 1,500 assets and more than 100,000 trading pairs — and it supports XMR in both directions.

StealthEX offers two pricing modes. A floating rate tracks the market until your deposit is confirmed, so the final amount can drift up or down. A fixed rate locks the quote for the order window at the cost of a small premium, protecting you from volatility while you wait for block confirmations. There is no separate line-item fee shown to the user; StealthEX's margin is built into the spread between what it pays its providers and what it quotes you.

FixedFloat: the speed-first instant exchanger

FixedFloat, also live since 2018 and Estonia-based, leans into speed and transparency about fees. It publishes its cut openly: roughly 0.5% on Float orders and 1% on Fixed orders, with the Fixed mode guaranteeing the rate or refunding you if the market moves past it. Crucially, FixedFloat was an early adopter of the Bitcoin Lightning Network, so small BTC-to-XMR swaps can settle for cents in fees and finalize in seconds rather than waiting on multiple on-chain confirmations.

The platform was fully rebuilt after the February 2024 exploit — blockchain analysts linked the attack pattern to state-affiliated groups — and it has run without a repeat incident since. Coverage is narrower than StealthEX's aggregated catalogue, but it concentrates on the high-liquidity pairs most users actually trade, Monero included.

StealthEX vs FixedFloat: head-to-head comparison

The table below summarizes the practical differences a Monero buyer cares about. Treat fee figures as the platforms' stated rates in early 2026 — your effective cost always depends on the live spread for the specific pair.

The honest summary: StealthEX wins on breadth and on locking a guaranteed rate for a long order window, while FixedFloat wins on raw speed, fee clarity, and Lightning-powered micro-swaps. Neither is "more anonymous" by design — that depends almost entirely on the hygiene of the coins you send in, not on the logo above the address field.

Swapping to Monero: what changes

Monero is not just another ticker in the dropdown. When you swap into XMR, the output transaction is shielded by Monero's privacy stack — RingCT hides amounts, ring signatures and CLSAG obscure the true spender, stealth address generation gives every payment a fresh one-time destination, and Bulletproofs+ keep the range proofs compact. The practical upshot is that once your coins land in your own Monero wallet, the trail effectively ends. That is exactly why the swap step deserves care.

1. Generate a fresh receiving address in your own wallet. Use a Monero wallet you control (Feather, Cake, or the official GUI), not an address pasted from a third party. A new Subaddress per swap keeps incoming payments unlinked on your side.
2. Choose Fixed rate if you value certainty. Monero deposits can take a few confirmations; locking the rate means market volatility during that window won't shrink your payout.
3. Send the input coin and record the order ID. Both platforms expire orders after a set window. Note the deposit address and order reference before you broadcast.
4. Verify the XMR arrives, then move it if needed. Confirm the amount in your wallet. If you plan to spend it, let the funds settle so your wallet can build clean key images for the next transaction.

Never send coins from a KYC exchange straight into a swap if you want privacy — the link between your verified identity and the deposit is recorded before Monero's anonymity set ever comes into play.

A real-world example and the AML trap

Say you hold 0.05 BTC on a self-custody wallet and want it in Monero. On FixedFloat with a Float order, you'd pay about 0.5% plus network fees and — using Lightning for the BTC leg — could see XMR land in well under ten minutes. On StealthEX with a Fixed-rate order, you'd accept a slightly worse quote in exchange for knowing the exact XMR amount upfront, useful if the market is choppy.

Where both can bite is AML screening. Each platform partners with transaction-monitoring providers and applies FATF-style risk scoring; in the US that ecosystem traces back to FinCEN guidance, and in the EU to the MiCA and AML frameworks now in force. If your incoming Bitcoin is flagged — say it recently passed through a sanctioned mixer or a known-tainted address — the swap can pause and ask for identity verification before releasing funds. This is rare for ordinary coins, but it is the single most common reason a "no-KYC" swap unexpectedly turns into a KYC one. Sending clean, well-aged coins is the best insurance.

This is also where a dedicated Monero aggregator earns its place. MoneroSwapper routes XMR pairs across multiple back-end providers and surfaces the live best rate, which means you are not betting your whole trade on one platform's spread or one platform's risk engine on any given day.

Limits, refunds, and what happens if a swap stalls

Most StealthEX-vs-FixedFloat write-ups stop at fees and forget the boring details that actually ruin a trade: minimums, order windows, and refund handling. These are where the two platforms quietly diverge.

Both enforce a minimum swap amount per pair, calculated so the output covers Monero's network fee and the service's floor. Send less than the minimum and the order simply won't process — the coins sit at the deposit address until you trigger a refund. Both also attach an expiry window to each quote: confirm your deposit inside it and the rate holds; miss it on a Floating order and you're re-quoted at the current market, while a Fixed order will refund rather than settle at a rate it can't honour.

Refund mechanics are the part worth rehearsing before you need them. On a Fixed-rate order that can't be filled — because the market moved or your deposit landed too late — the platform returns your input coin to a refund address you specify, minus the network fee. That last clause matters: a refunded Bitcoin transaction still costs an on-chain fee, so a stalled swap is never entirely free. FixedFloat's Lightning channel softens this for small BTC amounts; StealthEX's strength is that a long Fixed window gives slow Monero confirmations more room before anything expires.

If a swap stalls and neither completes nor refunds automatically, both services resolve it through support using your order ID — which is the single most important thing to save when you create the trade. Screenshot it. An order reference plus the deposit transaction hash is enough for either platform to locate and release stuck funds.

FAQ

Is StealthEX or FixedFloat cheaper for buying Monero?

It depends on the pair and the moment. FixedFloat shows an explicit fee — about 0.5% on Float and 1% on Fixed orders — while StealthEX bakes its margin into the quoted rate, so you compare the final XMR amount rather than a headline percentage. For small Bitcoin swaps, FixedFloat's Lightning support often makes it cheaper overall because on-chain network fees are largely avoided.

Are these exchanges really no-KYC?

For most swaps, yes — neither requires an account or document upload to trade. But both run automated AML risk scoring on incoming funds, and a flagged deposit can trigger a mid-swap identity request before your coins are released. "No-KYC by default, KYC on suspicion" is the accurate description for both.

Is FixedFloat safe after the 2024 hack?

The platform was rebuilt and has operated without a repeat breach since the February 2024 incident, which cost roughly $26.1 million. Because swaps are non-custodial and near-instant, your coins only sit on the service briefly during the trade itself — you are not storing a balance there. Still, the history is a fair reason to keep swap amounts reasonable and move output to your own wallet promptly.

Should I use Fixed or Floating rate for Monero?

Use Fixed rate when you want a guaranteed payout and don't mind a small premium, especially in volatile markets or when confirmations may be slow. Use Floating rate when you want the keenest possible price and expect the deposit to confirm quickly. For Monero specifically, Fixed rate removes the risk of the quote drifting while you wait on block confirmations.

Can I swap Monero back into Bitcoin or USDT?

Yes. Both StealthEX and FixedFloat support XMR in both directions, so you can sell Monero back into Bitcoin, Ether, USDT, and other major assets. The same AML screening applies to the coins you receive, so send to an address you control and avoid immediately depositing the output into a KYC venue if privacy is the goal.

Conclusion

There is no single winner in the StealthEX vs FixedFloat matchup — there's a better fit for what you're doing. Reach for FixedFloat when speed, transparent fees, and Lightning-powered Bitcoin swaps matter most; reach for StealthEX when you need an exotic pair or want to lock a fixed rate over a longer window. For both, your privacy depends far more on clean input coins and a self-custody Monero wallet than on which brand you pick.

If you'd rather not gamble on a single platform's spread or risk engine, compare live XMR routes through MoneroSwapper and buy Monero anonymously from whichever back-end is offering the best rate at that minute. The goal is the same one Monero was built for: get your coins into a wallet you control, with the trail ending there.