Brokers usually approach liquidity as a shopping problem: who has the tightest spreads on gold, who charges least per million. The provider on the other side is running a different exercise. It is deciding whether to give a counterparty the ability to open positions against it, whether the collateral covers the worst plausible gap, and whether this firm's flow will cost more to hedge than it earns in commission.
That is an underwriting decision, and the file it needs looks a lot like a credit file.
Licence and jurisdiction come first
The provider's own regulator, its bank and its prime broker all care who its counterparties are. A licensed brokerage in a supervised jurisdiction, with client money segregation the provider can point to, is a straightforward file. A firm registered in a jurisdiction with a company registry but no meaningful prudential supervision of investment services is a harder one, because the provider inherits the reputational and financial crime exposure without a supervisor standing behind it.
This is not a moral judgement, it is a chain effect. The provider clears somewhere. Its clearing relationship has an appetite for counterparty jurisdictions, sanctions exposure and FATF listings. A counterparty that puts that relationship at risk costs more than it earns. Firms weighing where to register should read what offshore licences actually cover and how licence routes compare before deciding that the cheapest registration is the practical one.
Credit, collateral and the margin arrangement
Almost no retail brokerage gets uncollateralised credit. The normal arrangement is prefunded: the broker posts collateral, the provider sets margin requirements per instrument, and the broker's ability to hold client-facing exposure is bounded by what is on deposit. The questions that follow are about the mechanism rather than the amount.
How is the collateral held and where. What happens on a margin call, and what is the notice period. Which instruments carry a higher margin requirement because they gap, and what happens over a weekend or around a scheduled central bank event. Whether the provider can raise requirements unilaterally when volatility rises, which in practice it can and will. A broker that has not modelled a requirement increase during a fast market has not modelled the risk that actually kills firms.
Flow quality, which is what they are really buying
Providers price by expected cost to hedge. A book of retail clients trading a normal spread of instruments across the session is cheap to internalise. A concentrated stream of latency-sensitive orders, one-directional bursts around news releases, or copy trading that fires identical orders from hundreds of accounts in the same second is expensive, and the provider will either widen your pricing, restrict instruments or decline.
Expect to be asked for a breakdown of your book: instrument mix, average trade size, holding time distribution, share of scalping strategies, share of copy trading and expert advisor volume, and whether you internalise any of it. If you already run a live book, they will want statistics. If you do not, they will want your target client profile and will test the claim after go-live. How you route that flow is a decision to settle early, and the A-book and B-book question shapes it more than any pricing negotiation. The mechanics of routing are covered in ECN and STP explained.
Technology and operational readiness
The provider needs to know what it will be connected to. Which platform, which bridge or aggregator, whether the connection is FIX or an API, what your session and failover arrangements are, who is on the desk during your clients' trading hours, and how you reconcile at end of day.
Two things stall integrations more than anything else. First, symbol mapping: your instrument names, contract sizes and quote conventions must map cleanly to theirs or trades reconcile wrong. Second, testing discipline: a UAT phase with real order flow through the full chain, including rejects, partial fills and disconnects. Firms that skip UAT discover the gaps with client money in the market. FIX API basics covers the connection layer, and how liquidity providers work covers the commercial relationship around it.
This is a description of common industry practice, not advice. Liquidity agreements, collateral arrangements and regulatory permissions must be reviewed by your own legal and compliance advisers, and requirements differ by provider and jurisdiction.
The legal pack and the ongoing relationship
Alongside the corporate and KYB documents, expect the master agreement covering execution terms, a schedule of instruments and margin, and the annexes that decide what happens when something goes wrong. Read the clauses about last look, order rejection, trade cancellation on manifest error, close-out on default and unilateral amendment of margin. Those clauses, not the headline spread, determine your outcome in a bad week.
Onboarding is also not the end of the review. Providers monitor flow after go-live and reprice or restrict when the profile drifts from what was described. If your marketing pivots to a client base that trades very differently, tell them. The same principle that governs payment relationships governs this one: an unannounced change reads as concealment, and the fastest way to lose a counterparty is to surprise it.
"Everyone negotiates the spread and nobody reads the default clause. Then a gap opens over a weekend and the clause is the only part of the agreement that matters."
— Alex Onta, Executive Director, SINGUARD
Key Takeaways
- A liquidity provider underwrites a broker as a counterparty, so licence, jurisdiction and ownership are the opening questions.
- Collateral arrangements matter less for their size than for what happens when the provider raises margin during a fast market.
- Flow quality drives pricing: concentrated news bursts, latency-sensitive orders and mass copy trading cost more to hedge.
- Symbol mapping and a real UAT phase prevent the reconciliation failures that appear once client money is live.
Frequently Asked Questions
Do we need a licence to get liquidity?
Not universally, but jurisdiction and supervision heavily influence which providers will onboard a firm and on what terms, because the provider inherits counterparty and financial crime exposure. Take your own legal advice on what your activity requires.
Why would a provider widen our pricing after go-live?
Because pricing reflects the expected cost of hedging your flow. If the live book turns out to be more concentrated, faster or more directional than the profile described at onboarding, the provider reprices, restricts instruments or exits.
What is the single most common technical failure during LP integration?
Symbol mapping. Mismatched instrument names, contract sizes or quote conventions between the platform and the provider cause trades to book and reconcile incorrectly, and it is much cheaper to catch in UAT than in production.
About the Author
Alex Onta is an Executive Director at SINGUARD. He built eTrader, the terminal, the mobile apps, eTrader Broker, Copytrading, Business and Community, along with the worldwide clustered-server infrastructure it all runs on, with his brother Roman Onta helping on the design, and he leads that division today. Together with Roman he builds the Prop Firm CRM, the Broker CRM, Scalegram and CopySignals, and the two of them carry worldwide compliance, payment processing and international business structuring side by side. He lives and works in Dubai for most of the year. Meet the executive duo leading Singuard's five divisions.