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Updated: Dec, 29 2025

Decentralized Exchanges – How to Start a DEX

Learn the legal subtleties of starting a DEX: the possible need for a license, company formation, and legal set-up. LegalBison explores the benefits of running a decentralized exchange, dwelling on the legal side of the procedure.

  • Legal assessment of the decentralized services
  • Providing DEX-adapted legal services
  • Technical assistance and audit
  • Assistance with banking for providing on-ramping
Legal Services for Decentralized Exchanges

Common services of DEXes and their regulation

A decentralized cryptocurrency exchange (DEX) is a peer-to-peer trading platform without any central authority to oversee and control the transactions. Instead, users trade cryptocurrencies through smart contracts.

Such a trading process is considered more individual and anonymous compared to trading on a CEX since all transactions go through on public blockchains, while the absence of a supervising body allows users to manage the custody of their funds. 

The question that arises naturally is: how to legally structure a Decentralized Exchange?

Even for a decentralized platform, there are certain legal implications to be studied and possible requirements to be followed. As you read further, we will acquaint you with the building blocks of a decentralized exchange, explaining each not only from a legal but also a technical point of view.

  • Operations
  • Liquidity
  • Wallets
  • DAO

Describing the business model

One might assume that if a DEX is not governed by anyone in particular and gives its customers free rein in trading operations, it will not need a legal permit. This is not necessarily true. Assessing the need for a license starts with defining the business model of your future startup. 

While some decentralized exchanges are crypto-only, which means that they allow customers to connect their wallets and use cryptocurrencies for trading directly from there, others can offer more flexible solutions, such as on-ramping for the trading process. On-ramping involves exchanging fiat currencies for digital ones to further use them on a DEX. 

The involvement of fiat in a Decentralized Exchange is a prerequisite for licensing in its own right.

How does our expert help you to successfully launch your DEX

Examples of LegalBison's assistance with decentralized exchanges

LegalBison regularly assists clients with opening DEX platforms. Due to years of experience, we are able to define the best course of action for each individual project. In this section, we aim to demonstrate how exactly we put our knowledge of the matter into practice.

Legal assessment of the DEX

Assessing the legality of a DEX

As soon as LegalBison is provided with all the project details, our FinTech lawyers start assessing it from multiple legal perspectives. The assessment includes the business model and services that a Decentralized Exchange intends to provide, their legality in the targeted markets, and the need for a license.

Once the estimation is done, LegalBison can draft a legal opinion or memorandum that outlines the best approach to launching a DEX in a legally compliant way.

Licensing for a DEX

Crypto license for a DEX

Through the process of drafting a legal opinion, the experts might define that certain business models in the project are subject to licensing. In most cases, a Decentralized Exchange will require a crypto license, especially if its services are closely related to fiat (on-ramping).

Once the necessity arises, LegalBison undertakes the administrative side of licensing a company, providing all the required documentation, and interacting with a regulator on the client’s behalf.

Banking for a DEX

Banking assistance

There are two possible types of banking assistance that LegalBison can provide: opening a bank account for the company itself and its corporate expenses and ensuring a banking gateway for clients’ transactions in fiat.

Due to the riskiness and increased volatility of the crypto market, most banks have second thoughts when it comes to working with crypto businesses. LegalBison established a connection between a client and a bank, ensuring that all the banking needs of the client are met.

Legal partner for a DEX

Ongoing legal support

In an ongoing partnership with LegalBison, we will assist with all the legal matters such as incorporation and structuring. At the same time, if the lawyers assist your company with the license obtainment initially, they will stay by your side to provide prompt consultations and bridge any possible compliance gaps whenever needed.

Our crypto clients can rely on our legal assistance
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Run your decentralized exchange platform legally

Legal implications of a DEX

Legal Assessment
Compliance
Incorporation
Technical Audit
Stories of our clients and how they went beyond with our assistance

Speaks for itself: the feedback of our clients

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Best for Crypto Licenses

Best company for Crypto Licenses! Kudos to the team for making the incorporation of our company really smooth

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Crypto Hunt, CEO Lakan Interactive
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Fast and Reliable

Quick set-up and straightforward process. It was a smooth process, we are happy to have chosen LegalBison as our Partner for incorporations, globally.

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Jack Tang BoomFi
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A perfect fit for our business

I highly recommend Legal Bison to any entrepreneur or business seeking top-notch services for their company formation. Their commitment to excellence and customer satisfaction is truly commendable.

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Shelby BinStarter
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Highly recommended!

The team of LegalBison was very helpful and fast in supporting my company’s structural set up. They are undoubtedly top-level experts when it comes to licensing and registrations in the crypto and web3 industry. Highly recommend!

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Konrad Propertys.xyz
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Very proactive

Very proactive, responsive, and able to provide solutions and advice. The firm is familiar with the new industry of blockchain and cryptocurrency

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Tran Hoai Nam DeCom Holdings

Guiding questions for your DEX legality

Pay attention to the six questions below, which are designed to guide you on the key aspects of starting a DEX. If you don’t have an answer to all of them, our legal experts are ready to assist you today.

Will you need a license for your DEX?
Have you provided stable liquidity?
Did you set up technical infrastructure?
Have you thought about providing on-ramping?
Did you ensure a banking gateway for on-ramping?
Will your DEX have any extra elements?

FAQ about our legal assistance for the set up of decentralized exchange platforms

Can I launch my own decentralized exchange (DEX)?

Yes, but a consultation with a legal professional is highly advisable. The lawyers at LegalBison can take your project to work and assist you with starting a DEX in a legally compliant manner.

What do I need to launch a decentralized exchange (DEX)?

For starters, understand the business model of your project and the legal intricacies connected to it. This is best done through making a legal opinion, in which expert lawyers will analyze your project and define its needs from A to Z.

How much does it cost to start a decentralized exchange (DEX)?

The price of launching your own Decentralized Exchange platform will depend on the business model, legal implications, and possible need for authorization. We advise you to contact us directly for more detailed information about your particular project. We can communicate through phone calls or messaging apps texting, as per your preference.

Can I provide on-ramping on my decentralized exchange (DEX)?

Yes, it is possible to incorporate on-ramping services to your clients on your decentralized platform. However, this implies connecting your project to the banking system. LegalBison can advise you on such solutions, in order to offer crypto on and off ramping to your customers.

You need fast answers about the legality of your project

Contact us now and our team wil consult you on the corporate structure of your DEX project.

Our experts will guide you on the legal implications of setting up a decentralized exchange and help you draw a roadmap. The first consultation is free.

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Crypto License Consulting Team

Legal experts in designing solutions for crypto licensing worldwide.

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Aaron Glauberman Specialist - Partner

Blockchain enthusiast and expert on cryptocurrency and FinTech related laws.