If you are looking for a B2Broker alternative for spot crypto liquidity, custody and fiat settlement, CEX.IO Prime is worth a close look. B2Broker has served brokers since 2014 and counts more than 1,000 business clients. Most of them run forex and CFD books, and B2Broker gives them margin liquidity across many asset classes plus the software to run a brokerage.
Crypto exchanges, crypto brokers, fintechs, payment companies and treasury teams often need something else. They trade spot crypto, hold client assets, and move euros and pounds every day. This comparison looks at both providers on liquidity, custody, fiat, pricing, access and regulation, so you can see which one fits your flow.
What is B2Broker?
B2Broker calls itself a “Prime of Prime Liquidity & Technology Provider”. The name stands for Business-to-Business and Business-to-Broker. The company started in 2014 with a MetaTrader white label and the B2CORE CRM, added its first licence and prime-of-prime services in 2016, and moved into crypto CFDs in 2017.
Today B2Broker sells two things. The first is liquidity: one margin account with access to more than 1,500 instruments across 11 asset classes, from forex and metals to indices, crypto CFDs and perpetual futures. The second is technology for brokers. B2CORE handles the client cabinet and back office, B2TRADER is its trading platform, B2COPY runs copy trading, B2CONNECT bridges liquidity into trading platforms, and B2BINPAY processes crypto payments. B2Broker’s licensed brokerage arm trades under the B2Prime brand.
That stack fits a firm that wants to launch a forex or CFD brokerage in one package. A business that runs spot crypto and needs custody and fiat on the same account often looks for a B2Broker alternative.
Why look for a B2Broker alternative?
Five situations come up most often.
- You trade spot crypto. Your clients buy and hold coins. You need deep spot books across many venues, and margin CFDs or leverage add nothing to your product.
- You hold assets for your clients. You want custody and a separate sub-account for each client or business line, on the same account where you trade.
- You move fiat every day. You need USD, EUR and GBP over SEPA, SEPA Instant, Faster Payments and SWIFT, settled next to crypto on the same day.
- You want to know the price before you trade. Your volume may sit below an institutional threshold, and you want a fee rate and order limits you can read before you sign.
- You want a second provider. Two liquidity sources give you a backup route and spread your counterparty risk.
CEX.IO Prime vs B2Broker: summary
The two companies build for different businesses. The table uses what each one publishes about itself, checked in October 2026.
| CEX.IO Prime | B2Broker | |
|---|---|---|
| Model | Aggregated spot crypto liquidity plus an OTC desk | Prime of prime: multi-asset margin liquidity plus broker technology |
| Built for | Crypto exchanges, brokers, fintechs, payment firms, OTC desks, treasuries | Forex and CFD brokers, crypto brokers, liquidity providers, funds, prop firms |
| Crypto | Spot across 500+ assets and 60+ networks, 15+ venues in one book | 138 crypto CFD pairs with leverage from 1:50, plus spot and perpetual futures |
| Account and custody | MPC custody, sub-accounts, mandatory address whitelisting, approval rules | Single margin account; client custody not described |
| Fiat | USD, EUR, GBP over SEPA, SEPA Instant, Faster Payments, SWIFT, same day | USD, EUR, GBP over SWIFT, SEPA, Faster Payments |
| T+0 | Credit line with T+0 settlement for eligible clients | Not published |
| Pricing | Fixed or floating fee, charged on the executed amount only | Software subscriptions plus commission-based liquidity |
| Access | Web portal, FIX 4.4, REST, WebSocket, webhooks | FIX, REST, socket API, MT4/5, cTrader, oneZero, PrimeXM, Centroid |
| Derivatives | None | CFDs, perpetual futures |
| Regulation | FinCEN MSB, US state MTLs, FCA registration, Bank of Spain VASP, FINTRAC | Group companies licensed by CySEC, FSA Seychelles, FSC Mauritius, DFSA, FSCA, SCB Bahamas, Labuan FSA |
CEX.IO Prime
CEX.IO Prime is a B2Broker alternative built for crypto businesses that need spot liquidity, custody and fiat rails on one account. It is the institutional service of CEX.IO Group, which has run a crypto exchange since 2013. One Prime account covers trading, OTC blocks, settlement, custody and reporting.
How the aggregator fills an order
Prime reads the order books of more than 15 trading venues at the moment you send an order. It works out how much of your size each book can absorb, builds a route before anything moves, and slices the order across venues so no single book takes the full hit. If a venue thins out mid-fill, the engine sends the rest of the size elsewhere. You get one fill at one volume-weighted price, however many venues filled it.
Coverage runs to more than 500 assets on over 60 networks. When two assets have no direct market, Prime goes through an intermediate asset and still quotes one price. Prime runs no proprietary book against its clients, so the price you get is the market’s price.
What happens when a venue fails
Liquidity providers sometimes misbehave. When one does, Prime pulls it out of the aggregation and moves your open limit orders to providers that still work. Your order stays live and you do nothing.
Order types, limits and fees
Prime supports market, limit and stop limit orders, with good till cancel, immediate or cancel and good till date. Every pair has a published minimum and maximum order size on prime.cex.io/markets, and anyone can check them without logging in. Prime keeps the maximum close to USD 1 million equivalent and reviews it weekly. Larger blocks go through your account manager, who quotes a price with a validity window and executes the trade off the order book once you confirm in writing.
Each pair runs on one of two fee models. A fixed fee gives you the rate before you trade. A floating fee sets an agreed maximum: a higher cap opens more routes and more liquidity, a lower cap holds down your cost. Prime charges only on the amount that executes.
Fiat and crypto on the same account
A Prime account holds dollars, euros and pounds next to digital assets. Fiat moves over SEPA, SEPA Instant, Faster Payments and SWIFT, and crypto settles on-chain across more than 60 networks. Both sides settle the same day. Eligible clients can trade on a credit line and settle at T+0 without pre-funding the account.
Sub-accounts and controls
Each end client, merchant or business line can sit in its own sub-account. Address whitelisting is mandatory, and you set single, dual or threshold approval for each sub-account. Assets sit in MPC custody, where a quorum of parties signs every transaction. Every operation posts to one ledger, and you can pull statements for the whole account or one sub-account in the portal or over the API.
Access
Developers connect over FIX 4.4, REST or WebSocket, and webhooks push events into your own systems. You test in DEV and UAT environments before you get production keys, and a public Node.js client speeds up the REST and WebSocket setup. Operations staff can use the web portal. Prime Liquidity runs 24/7, maintenance windows are announced in advance, and every client gets a named account manager.
On security, CEX.io LTD holds PCI DSS Level 1 certification as a service provider. Services depend on the client’s jurisdiction.
CEX.IO Prime pros and cons
Pros:
- Spot liquidity from 15+ venues in one book, with automatic rerouting when a venue fails.
- Fiat and crypto on one account, settled the same day, with T+0 on a credit line.
- Sub-accounts, address whitelisting and approval rules for every client.
- A fixed fee option and published limits for every pair.
- FIX 4.4, REST, WebSocket and test environments.
- PCI DSS Level 1 and an exchange track record since 2013.
Cons:
- No CFDs or derivatives.
- No CRM, MT5 or white-label trading terminal. Prime supplies the liquidity and the account, and you build the interface.
- The OTC minimum is agreed per client and not published.
What you can build on CEX.IO Prime
Many firms that search for a B2Broker alternative are building a product of their own. Five builds come up most often on Prime.
Branded crypto trading for your clients
Map each of your clients to a Prime sub-account. Their orders go through the API into the aggregated book, and fills land back on their sub-account. A neobroker can add crypto trading this way and show fills and positions in its own app. Your brand, your interface and your client relationship stay yours.
Liquidity behind your own order book
An exchange can connect over the API or FIX and hedge its users’ flow against Prime’s aggregated depth. When its own book runs short, it tops up inventory from Prime and reconciles the fills through reporting.
Buy, sell and convert inside your app
A fintech can ask Prime for a fixed price that holds for a short window, then confirm and credit the result to the user’s sub-account. A budgeting app can add a “Buy USDC” button. A wallet can let users swap ETH to USDT, and pairs with no direct market still convert through an intermediate asset.
Crypto payments and payouts
Give every payer or merchant a sub-account with its own deposit addresses. Incoming crypto lands in the right place, and a webhook fires on every credit. At the end of the day, a marketplace can send merchant payouts in one batch of up to 10,000 withdrawals to whitelisted addresses.
Fiat and crypto settlement for payment firms
A payment firm funds Prime in euros, converts to USDC and delivers the coins to its customer’s wallet. Its own books stay in fiat the whole time. The reverse flow turns crypto into euros and pays them to the firm’s bank account.
B2Broker
B2Broker has run as a prime of prime since 2016 and works with more than 1,000 business clients. It lists more than 30 industry awards.
Liquidity
The B2Broker margin account reaches more than 1,500 instruments in 11 asset classes. On the crypto side it offers 138 CFD pairs on more than 100 coins, with margin from 2% and leverage from 1:50, around the clock. Spot crypto and perpetual futures sit alongside as separate products. B2Broker counts stablecoins on 10 blockchains one-to-one toward a USD margin account and settles fiat in USD, EUR and GBP over SWIFT, SEPA and Faster Payments. It colocates in Equinix NY4, LD4, TY4 and HK3.
Technology
B2Broker’s software covers most of what a brokerage runs on: B2CORE for the client cabinet, CRM and back office, B2TRADER as a trading platform, and B2COPY for copy trading and managed accounts. It also connects to MT4 and MT5, cTrader, oneZero, PrimeXM and Centroid. B2CONNECT pulls liquidity from exchanges such as Binance, Coinbase, Kraken, Bitfinex and Bybit and feeds it into B2TRADER, cTrader, oneZero and PrimeXM. B2BINPAY, the group’s payment gateway, supports more than 350 digital currencies.
Pricing
B2Broker publishes its software prices. B2CORE starts at $1,000 a month, and B2TRADER and B2CONNECT have their own monthly rates. The software is free for clients who take B2Broker liquidity, and B2Broker charges commission on liquidity volume. Its bundle page sets a threshold of 300 million in average monthly volume for institutional liquidity.
Regulation
B2Broker’s group companies hold licences from the Cyprus Securities and Exchange Commission, the Financial Services Authority of Seychelles, the Financial Services Commission of Mauritius, the Dubai Financial Services Authority, South Africa’s Financial Sector Conduct Authority and the Securities Commission of The Bahamas. In 2025 B2BROKER PRIME Investment Bank Ltd announced a Labuan investment bank licence from the Labuan Financial Services Authority.
B2Broker pros and cons
Pros:
- Wide multi-asset liquidity from one margin account.
- A full software stack for launching a forex or CFD brokerage.
- CFDs and perpetual futures.
- Integrations with the main retail trading platforms.
- Published software prices and Equinix colocation.
Cons:
- No current liquidity commission or minimum deposit on the website.
- B2CONNECT supports margin accounts only for now, according to its own FAQ.
- The website does not describe custody for liquidity clients.
- A margin-first product can be more than a spot and fiat business needs.
CEX.IO Prime vs B2Broker: head to head
For a team that needs a B2Broker alternative for crypto, the differences sit in six areas.
Spot crypto liquidity
Prime aggregates spot books from 15+ venues, reroutes around failing providers and returns one fill. B2Broker offers crypto CFDs, spot and perpetuals from one margin account. According to the B2CONNECT FAQ (checked in October 2026), the hub supports margin accounts today, and spot accounts and multi-source aggregation are on its roadmap. For spot flow, CEX.IO Prime fits. For leveraged crypto products, B2Broker fits.
Custody and accounts
Prime puts MPC custody, client sub-accounts, address whitelists and approval rules inside the trading account. B2Broker’s liquidity pages do not describe custody for clients, so a business that holds customer coins may need a separate custody provider. CEX.IO Prime leads here.
Fiat settlement
Both work in USD, EUR and GBP, and both use SWIFT, SEPA and Faster Payments. Prime adds SEPA Instant, keeps fiat and crypto on the same account and offers T+0 on a credit line. A payment firm that pays out euros every afternoon will feel that difference. CEX.IO Prime is the better fit when fiat moves daily.
Pricing and minimums
Prime offers a fixed fee you know before you trade, a floating fee with an agreed cap, and published limits for every pair. B2Broker publishes its software prices, bundles software free with liquidity and charges commission on volume above its thresholds. Pick CEX.IO Prime to see your trading cost upfront. Pick B2Broker if you want the software bundle.
Technology for brokers
B2Broker sells a CRM, a trading platform, copy trading and turnkey brokerage setups. Prime does not sell any of these. B2Broker wins this one.
Regulation
The two cover different maps. Prime’s group holds registrations and licences in the US, the UK, Spain and Canada. B2Broker’s group companies hold licences in Cyprus, Seychelles, Mauritius, Dubai, South Africa, The Bahamas and Labuan. Choose by where your clients are.
How to choose a B2Broker alternative
Choose CEX.IO Prime if:
- You run a crypto exchange, a crypto brokerage, a fintech, a payment company or a treasury.
- You need spot, OTC, custody and fiat on one account.
- You want a sub-account for each of your clients.
- You want to know your fee and order limits before you trade.
- Your clients are in the US, the UK or Canada.
Choose B2Broker if:
- You run a forex or CFD brokerage.
- You need 11 asset classes and leverage.
- You want a ready CRM, MT5 or cTrader under your brand.
- Your clients are in jurisdictions that B2Broker’s group companies cover.
Some firms use both. They take margin products and broker software from one provider and run spot crypto, custody and fiat through Prime.
FAQ
What is the best B2Broker alternative?
For crypto exchanges, crypto brokers, fintechs and payment firms, CEX.IO Prime is a strong B2Broker alternative. It aggregates spot liquidity from 15+ venues and keeps custody, sub-accounts and USD, EUR and GBP rails on the same account. Forex and CFD brokers that want a full software stack may still prefer B2Broker.
Who are B2Broker’s main competitors?
B2Broker competes with two groups. One is liquidity providers such as Finery Markets, FinchTrade, Cumberland and Wintermute. The other is broker technology vendors such as Brokeree Solutions. CEX.IO Prime competes on the liquidity side for crypto businesses.
What does B2Broker do?
B2Broker is a prime-of-prime liquidity and technology provider founded in 2014. It gives brokers margin liquidity across more than 1,500 instruments and sells software such as B2CORE, B2TRADER, B2COPY, B2CONNECT and B2BINPAY.
Is B2Broker regulated?
B2Broker’s group companies hold licences from CySEC, the Seychelles FSA, the Mauritius FSC, the DFSA, South Africa’s FSCA and the Securities Commission of The Bahamas, and a group bank holds a Labuan FSA licence. Check which entity will be your counterparty before you sign.
Is CEX.IO Prime regulated?
CEX.IO’s group companies hold a FinCEN registration as a money services business and state money transmitter licences in the US, an FCA registration in the UK, a Bank of Spain virtual asset provider registration and a FINTRAC registration in Canada. CEX.io LTD holds PCI DSS Level 1 certification.
Does CEX.IO Prime offer spot crypto liquidity?
Yes. Prime aggregates spot order books from 15+ trading venues, covers 500+ assets and returns every order as one fill at one volume-weighted price.
How does CEX.IO Prime charge for liquidity?
Each pair runs on a fixed fee or a floating fee with a maximum you agree with Prime. Prime charges only on the amount that executes.
Does CEX.IO Prime offer CFDs or leverage?
No. Prime runs spot trading, OTC, custody and fiat settlement. Eligible clients can trade on a credit line that settles at T+0.
Can I use both CEX.IO Prime and B2Broker?
Yes. Many institutions work with more than one liquidity provider. Two providers give you a backup route for execution and lower your exposure to any single counterparty.
Final thoughts
B2Broker is a strong choice for forex and CFD brokers that want liquidity and software from one vendor. CEX.IO Prime is the B2Broker alternative for crypto businesses: spot liquidity from 15+ venues, custody, client sub-accounts and dollar, euro and pound rails on one account. If your company trades spot crypto for its own clients and moves fiat every day, start with Prime.
