How To Start a BaaS Partnership In the U.S. (The Steps That Actually Matter)

What a BaaS Partnership Actually Gets You

Banking as a Service lets a fintech offer banking products without becoming a bank. You get FDIC-insured accounts, card issuing, ACH, wire, and payment rails. A chartered US bank provides the licence and the regulatory backbone. You provide the product and the customers.

The sponsor bank holds the deposits and carries the regulatory responsibility. You build the app, own the customer relationship, and run the experience. In the middle, sometimes, sits a BaaS platform that connects the two.

That is the model. What has changed is who carries the compliance weight and how much of it there is.

Step 1: Get Your Business Model Clear Before You Talk to Anyone

The first thing a sponsor bank asks is what you actually do. Vague answers kill applications.

You need to know exactly which banking products you want to offer. U.S. named accounts to end customers, debit cards, stable coin on/off ramps or traditional payments. Each one carries a different risk profile and not every sponsor bank supports every product.

You also need to know your end customers. Consumer or business (C2B or B2B payments involved). US only or international. Low risk or high risk. Understanding these parameters will allow you to get what you need, because not all banks, for example, want to deal with retail flows.

A sponsor bank underwrites your customer base as much as it underwrites you. If your users are high-risk, most banks will pass, and you need to know that before you waste two months.

Write a clear business plan. Not a pitch deck. A document that explains your product, your customers, your money flows, your revenue model, and your compliance approach. The bank will read it closely.

Step 2: Decide Whether You Need a BaaS Platform or a Direct Bank Relationship

There are two ways to structure a BaaS partnership and picking the wrong one costs you time and margin.

The first route is through a BaaS platform. They give you a single API, help you get matched with a bank, and handle a lot of the technical plumbing. Faster to launch. You pay for the convenience.

The second route is a direct relationship with a sponsor bank. No middleware. You integrate with the bank's rails directly or through the bank's chosen processor. More control, better economics at scale, more work upfront, and more compliance responsibility on your side.

Step 3: Build Your Compliance Programme First, Not Last

This is where most fintechs get it wrong. They treat compliance as something the bank handles. It is not. The bank carries the regulatory risk, which is exactly why they will not partner with a fintech that has a weak compliance programme.

You need a documented BSA and AML programme. You need KYC and customer due diligence procedures. You need transaction monitoring. You need a designated compliance officer, and for a serious programme, that person needs real experience, not a founder wearing a second hat.

Clarify early what the bank owns and what you own. Some banks run KYC themselves. Others expect you to own it entirely. Some want daily reporting. Others want monthly. Ask this in the first conversation, because the answer tells you how much you need to build.

The fintechs that get approved fastest are the ones that walk in with a compliance programme already built. It signals you understand the responsibility you are taking on.

Step 4: Get Your Reconciliation and Recordkeeping Right

In September 2024 the FDIC proposed recordkeeping requirements aimed at the custodial for-benefit-of accounts that pool fintech end-user funds.

What this means for you is simple. You must be able to account for every dollar of every end user at all times. Your ledger must reconcile with the bank's ledger continuously, not monthly.

Sponsor banks now ask about your reconciliation capability directly. If you cannot demonstrate that you can maintain accurate, real-time records of end-user balances, you will not get approved. Build this into your infrastructure from day one. It is not optional anymore.

Step 5: Approach Sponsor Banks the Right Way

Do not cold-email twenty sponsor banks at once. The BaaS community is small and banks talk to each other.

Identify banks that actually fit your profile. A bank that specialises in consumer deposit programmes is the wrong target if you are building B2B payments. Match your product and customer base to banks that already support similar programmes.

When you approach a bank, come prepared. Have your business plan, your compliance programme, your reconciliation approach, and a clear articulation of your money flows ready. The best partner candidates, according to the banks themselves, are the ones honest enough to explain why the partnership might not work. Banks trust fintechs that understand the risks.

Expect the bank to do real due diligence on you. Financials, backgrounds of founders, compliance controls, technology. This is a two-way underwriting process now. Treat it that way.

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Step 6: Negotiate the Commercial and Compliance Terms

Once a bank is interested, the terms matter more than most founders realise.

Understand the economics. How revenue is shared, what the bank charges per account or per transaction, what minimum volumes or deposit commitments apply. These vary widely between banks.

Understand the compliance division of labour. Get it in writing. Who runs KYC, who files SARs, who owns transaction monitoring, who handles disputes. Ambiguity here becomes a regulatory problem later.

Understand the exit. What happens if the bank exits BaaS, if you outgrow the relationship, or if the partnership ends. Deposit portability and an exit plan are things regulators now expect banks to have. Make sure you understand yours before you sign.

Step 7: Integrate, Test, and Launch in Controlled Phases

Once terms are signed, the technical build begins. Whether through a BaaS platform API or a direct bank integration, this is where your product comes to life.

Do not launch everything at once. Start with a limited product and a controlled group of users. Prove that your reconciliation works, your compliance controls fire correctly, and your money flows behave as expected. Then scale.

Sponsor banks appreciate a phased launch because it lets both sides catch problems while they are small. It also builds the bank's confidence in you, which matters when you later want to add products or deposit capacity.

How Long This Actually Takes

Set realistic expectations. In the current environment, from first conversation to live product is typically six months. Compliance build and bank due diligence are the slow parts, not the technical integration.

Anyone promising you a live BaaS product in a few weeks is either using a middleware shortcut that limits your control or is not accounting for the compliance reality of the post-Synapse market. Plan for the longer timeline and you will not be caught out.

The Short Version

A BaaS partnership in the US is achievable and the market is growing. But it is no longer a casual arrangement.

Get your business model clear. Build compliance and reconciliation before you approach anyone. Match yourself to the right banks. Negotiate the terms carefully. Launch in phases. Do those things and you will get through the process that trips up the fintechs still operating on 2022 assumptions.

If you are a fintech planning a US BaaS partnership and want help structuring the approach, building the compliance narrative sponsor banks expect, or identifying the right banking partner for your model, the Epico Finance team works with fintechs through exactly this process. Get in touch.