At some point most crypto companies hear the same sentence from a counterparty: "We'll need to see a legal opinion before we can move forward." A founder who has never commissioned one tends to treat the request as a formality—a piece of paper to be produced and filed. It is not a formality. The opinion letter is frequently the document that determines whether a bank opens an account, a processor connects an API, or an exchange lists a token. Understanding what it actually is, and why the person asking for it cares, changes how seriously you treat it.
What a Legal Opinion Letter Is
A legal opinion letter is a formal written analysis from an attorney, addressed to a specific recipient, stating how the law applies to a specific set of facts. It is not marketing, and it is not a memo to yourself. It is addressed to the bank, the processor, or the exchange, and it is written so that the recipient may rely on it. That word—reliance—is the heart of the document. When counsel renders an opinion the recipient can rely on, the lawyer is putting professional judgment, and professional exposure, behind the conclusion.
In crypto, the question being answered is usually one of a small set: Is this token a security under SEC v. Howey and the guidance that follows it? Does this business model make the company a money transmitter or money services business under federal and state law? Are the company's Bank Secrecy Act and anti-money laundering controls adequate for a banking relationship? A letter does not simply announce the answer. It recites the facts it relied on, walks through the controlling law, and explains why the conclusion follows.
Why the Institution—Not You—Is the Real Audience
It helps to remember who the letter is for. A bank that onboards an unlicensed money transmitter inherits that customer's regulatory problem and can answer for it to its own examiners. An exchange that lists a token later found to be an unregistered security can face securities liability for the listing itself. These institutions are not asking for an opinion to generate paperwork. They are asking because someone in their compliance function needs a defensible, documented basis to say yes—and that basis has to come from outside counsel whose name is on the analysis.
This is why a thin or generic opinion tends to backfire. The compliance team on the other side will read it critically, and a letter that hand-waves through the hard parts produces more questions, not fewer. I have seen perfectly good companies stall for weeks because the opinion they brought to the table did not survive the first round of diligence.
A Concrete Example: The Token Classification Opinion
Consider the most common request—an opinion on whether a token is a security. A real analysis does not just cite Howey and conclude. It looks at how the token was sold and to whom, what the company said in its marketing and on social media, whether purchasers were led to expect profits from the company's continued efforts, the degree of decentralization at the relevant time, and whether any exemption applies to the manner of sale. The same token can land differently depending on those facts. A letter that engages with them honestly is worth something to a listing committee; one that asserts a conclusion without them is not.
What Separates an Opinion That Holds Up
Three things, mostly. It is written by counsel who actually understands both the securities and banking frameworks and the underlying technology—because the analysis often turns on how the token, the smart contract, or the settlement mechanism actually functions. It is grounded in your real facts rather than a template, which means the lawyer has to read your documents and ask uncomfortable questions. And it is honest about risk, including where the law is unsettled, because a recipient's compliance team can tell the difference between a careful opinion and a confident one.
What an Opinion Letter Costs—and Why It Varies
There is no flat rate, and anyone who quotes one before understanding the question is guessing. Cost tracks scope. A focused securities-classification opinion on a single token, where the facts are clean and documented, is a contained piece of work. A full money-transmitter and Bank Secrecy Act analysis spanning multiple states, or an opinion that has to account for a complicated token sale history, is a different undertaking. The level of assurance matters too: a recipient sometimes wants a "reasoned" opinion that lays out the analysis and reaches a "should" or "more likely than not" conclusion, rather than a flat, unqualified opinion that the law may not actually support.
What you should expect, regardless of price, is a clear engagement letter that states the question, the assumptions, the documents reviewed, the timeline, and the fee before the work begins. The expensive surprises in this area come from scope that was never pinned down—not from the rate.
When to Commission One
Earlier than you think. The best time to obtain an opinion is before the token sale, before the listing application, before the bank's onboarding questionnaire lands in your inbox. A company that plans ahead can hand over a clean package and move at the speed of the deal. A company that scrambles after the request usually loses time at exactly the moment momentum matters most, and sometimes loses the counterparty altogether.
If a bank, processor, or exchange is asking for a legal opinion—or you want one in hand before they ask—get in touch and I'll help you scope exactly what the situation calls for.