FixedFloat

FixedFloat is a fully automated, non-custodial instant crypto exchange founded in 2018 and licensed by the Estonian FIU. It supports 60+ cryptocurrencies including Bitcoin Lightning Network swaps, offers both fixed and floating rate modes, and requires no account registration for standard exchanges. It operates as an instant exchange — not a platform that holds user funds — meaning swaps execute automatically and the output coin goes directly to the wallet address you provide.

FixedFloat was hacked twice in 2024 — first in February ($26.1 million in BTC and ETH) and again in April ($2.8 million in various tokens), both traced to vulnerabilities in third-party server infrastructure. After taking the platform offline for over two months, the team rebuilt the infrastructure from scratch and completed a security audit before relaunching. Because FixedFloat is non-custodial, user funds held in personal wallets were not directly affected by the hacks — only funds transiting through the platform at the time were at risk. On Swapzone, FixedFloat currently shows 0 open financial claims, though its STRICT VERIFICATION label and Slow Partner Support rating are worth factoring into your decision for larger swaps.

Two features set FixedFloat apart from most instant exchangers. First, it supports Bitcoin Lightning Network — allowing BTC swaps that settle in seconds rather than waiting for on-chain confirmations. Second, its fee structure is explicit and upfront: fixed rate exchanges carry a 1% fee with the rate locked for 10 minutes, while floating rate exchanges carry a 0.5% fee with the rate calculated at confirmation. Both amounts are shown before you commit, with no hidden markups after the fact.

No registration or identity verification is required for standard swaps — FixedFloat's KYC frequency is rated Rare on Swapzone. However, FixedFloat carries a STRICT VERIFICATION label on Swapzone alongside the Rare KYC rating, which indicates that when verification is triggered by AML checks, the process tends to be thorough. Users swapping larger amounts or using flagged wallet addresses should factor this into their choice. FixedFloat is also not available to users based in the United States.

FixedFloat charges 1% for fixed-rate exchanges — the rate is locked for 10 minutes from order creation — and 0.5% for floating-rate exchanges, where the final amount is calculated at market price when your deposit confirms. Both fee types are shown in the quoted output before you send any funds. Network fees are additional and vary by blockchain. On Swapzone, FixedFloat's offer appears alongside other partners' rates so you can compare the all-in output directly.

On Swapzone, the closest alternatives are ChangeNOW, SimpleSwap, StealthEX, Changelly, and LetsExchange — all non-custodial, no-registration exchangers. Compared to FixedFloat, most of these partners support a broader coin selection (60+ vs. 500+), have higher transaction volumes through Swapzone, and do not carry a history of security incidents. For users specifically needing Lightning Network BTC swaps, FixedFloat remains one of the few instant exchangers offering this natively. Swapzone displays all live rates and partner labels side by side before you commit.

Following the two 2024 security breaches totalling approximately $28.9 million, FixedFloat went offline for over two months, migrated all servers away from the compromised third-party hosting provider, and completed a full infrastructure rebuild and security audit before relaunching. The team stated that all outstanding orders affected by the shutdown were fulfilled. Since the relaunch, FixedFloat has been operating normally — but the incident is part of its public track record, and users evaluating it as a partner should weigh it accordingly alongside current performance data on Swapzone.