Robo Advisor Development: Build a US RIA App in 2026
AI Summary: Robo advisor development for US RIAs combines investment-adviser responsibilities with digital advice technology. Teams must define the registered adviser, custodian and technology-provider roles before building risk profiling, portfolio recommendations and rebalancing. Algorithm governance, disclosures, suitability controls, secure integrations and audit records are core requirements rather than optional additions to a dashboard. |
A robo-advisor looks like a product problem: a risk questionnaire, a few model portfolios, automatic rebalancing and a clean dashboard. In the US it is first a regulatory one. If your software gives personalised investment advice for compensation, someone in the chain is acting as an investment adviser and must be registered with the SEC or a state. That decision shapes your onboarding, your algorithm governance, your disclosures and how you connect to a custodian.
This guide is for founders building a digital advice product and for registered investment advisers (RIAs) adding one. It covers who must register, the three ways to launch, what the SEC expects from robo-advisers, the custody and brokerage model, a reference architecture, the key APIs, compliance features and what drives cost and timeline. For licences across markets, see our Fintech Licensing Requirements 2026 guide.
Robo advisor development: What makes a robo-advisor an investment adviser
The SEC's staff guidance on robo-advisers (IM Guidance Update 2017-02) is clear that robo-advisers, like all registered investment advisers, are subject to the substantive and fiduciary obligations of the Investment Advisers Act. Automation does not change the duty of care and loyalty you owe clients. It changes how you prove you meet it.
Purely educational tools, calculators and general content may fall outside the adviser definition, but the line depends on facts. Once your app recommends specific portfolios to specific people, or manages their accounts on a discretionary basis, plan on registration.
Three ways to launch
Route | Who is the registered adviser | What you build | Best for |
Register your own RIA | Your company | Full advice platform plus compliance programme, Form ADV, chief compliance officer | Consumer robo-advisors and fintechs that want to own the advice relationship |
Platform for existing RIAs (white-label or SaaS) | Your RIA clients | Software they use to deliver digital advice under their own registration | Wealthtech vendors serving advisory firms |
Technology provider to, or sub-adviser for, a registered firm | The partner firm (you may also register as a sub-adviser) | Models, portfolio engine or front end under a partner's registration | Teams with strong models but no distribution or compliance staff |
If you build for existing advisory firms, the firm stays responsible for advice. The SEC guidance still affects you, because it tells advisers to oversee any third party that develops, owns or manages the algorithm they use. Expect your RIA customers to ask for testing evidence, change logs and documentation. Our page on wealth and investment app development for US financial advisors and RIAs covers the advisory-firm side, and our guide to wealth management platform development in the US covers features and security.
State vs SEC registration and the internet adviser exemption
Where you register depends mostly on regulatory assets under management (RAUM). Under the SEC's Rule 203A-1, an adviser generally may register with the SEC once it has $100 million in RAUM and generally must once it reaches $110 million. Below that, most advisers register with their state securities regulators, which means multiple state filings as you grow.
New robo-advisors have often used the internet adviser exemption to register with the SEC before reaching that size. The SEC amended it on 27 March 2024. An adviser relying on it must at all times have an operational interactive website through which it provides digital investment advisory services on an ongoing basis to more than one client. The amendments also removed the old de minimis exception: advice must be given to all clients exclusively through that interactive website. Advisers had to add a representation of eligibility to Form ADV by 31 March 2025, and those no longer eligible had to move to state registration by 29 June 2025.
Product impact: if you plan to add human advisers who give advice outside the platform, the internet adviser exemption may not fit. Decide your service model before you choose your registration path.
Registering: Form ADV, Form CRS and IARD
SEC registration is filed electronically through IARD. You file Form ADV Part 1 and Part 2 (the brochure that describes services, fees and conflicts), and the SEC generally has 45 days after receipt to declare registration effective. Advisers with retail investors must also prepare and deliver a relationship summary, Form CRS. Your app has to deliver these documents at the right moments and record that it did.
What the SEC expects from robo-advisers
The 2017 guidance focuses on three areas. Each becomes software.
Disclosures
The SEC staff expects robo-advisers to explain their business model and the limits of the service in plain terms. That includes how the algorithm manages accounts, its assumptions and risks, any circumstances in which the adviser may override it, third-party involvement in building or running it, fees, and how much human involvement there is. Disclosures should appear where clients make decisions, not only in a PDF.
Build: versioned disclosure content tied to each screen and each client, with delivery and acceptance logs.
The questionnaire and suitability
Because there may be little or no human contact, the questionnaire carries the suitability burden. The guidance asks whether it gathers enough information to support suitable advice, whether questions are clear, whether the app flags inconsistent answers and whether clients can update their profile.
Build: a rules-based questionnaire engine with consistency checks, follow-up prompts, a stored scoring version for each client, and a re-profiling flow triggered by time or life events.
Algorithm governance
The guidance suggests written policies on developing, testing and backtesting the algorithmic code, monitoring its performance after launch, disclosing material changes to clients, and overseeing third parties that provide the code. These sit inside the compliance programme every registered adviser needs under the compliance rule, Rule 206(4)-7-7), which requires written policies, an annual review and a chief compliance officer.
Build: model and rebalancing logic under version control, a test harness with backtests and regression tests, approval workflows before release, production monitoring that compares actual trades to expected trades, and a change log that drives client notices when changes are material.
Marketing, custody and privacy
Marketing. Performance claims, testimonials and referral programmes fall under the Marketing Rule, 206(4)-1-1). The 2017 guidance also flags social media and "refer-a-friend" programmes.
Custody. If you have custody of client assets, the Custody Rule, 206(4)-2-2), applies. Most robo-advisors use a qualified custodian, often a broker-dealer, and design to limit their own custody.
Privacy and incident response. The SEC's 2024 amendments to Regulation S-P require covered firms to have an incident response programme and to notify affected individuals as soon as practicable, and no later than 30 days, after becoming aware of unauthorised access to sensitive customer information. The compliance dates have passed for both larger and smaller firms.
On AI: in June 2025 the SEC withdrew a set of pending proposals, including the one on predictive data analytics. That does not create a safe harbour. Fiduciary duty, disclosure and the compliance rule still apply to any AI features you add. Our article on how AI is used in wealth management apps covers use cases.
Custody and brokerage model
A robo-advisor needs somewhere to hold assets and execute trades. The usual pattern is an API connection to a broker-dealer or custodian that opens accounts in the client's name, takes funding, executes and settles trades, and produces statements and tax forms. You send orders and receive positions and activity. Our guide on building a US stock trading app with broker APIs compares account structures and broker-dealer roles in detail.
Two design points matter:
Individual accounts. Robo programmes manage many client accounts with similar models. The Investment Company Act's Rule 3a-4 provides a non-exclusive safe harbour so that such programmes are not treated as unregistered investment companies. Its conditions include individualised management, letting clients impose reasonable restrictions, and periodic contact with clients. Build restriction handling and periodic client check-ins into the product.
Fractional shares and cash. Small accounts need fractional trading and a clear cash sweep design. Confirm what your custodian supports before you design portfolios.
Reference architecture
Module | Responsibilities |
Onboarding and KYC | Account application, identity verification, custodian account opening, e-signature of advisory agreement |
Risk profiling | Questionnaire engine, consistency checks, scoring versions, re-profiling triggers |
Model portfolio service | Model definitions, asset allocation, versioning, approvals |
Portfolio engine | Drift detection, rebalancing, cash management, tax-aware rules such as tax-loss harvesting where offered |
Order management | Order generation, pre-trade checks, aggregation, submission to the broker, fills and allocation |
Custodian integration | Accounts, funding, positions, transactions, statements, corporate actions |
Client experience | Goals, performance, fees, documents, notifications |
Billing | Advisory fee calculation and deduction from accounts |
Compliance and records | Disclosures delivered, Form ADV and Form CRS delivery, algorithm change log, marketing review, books and records |
Monitoring and surveillance | Trade-vs-model checks, exception queues, suitability reviews |
Security | Access controls, encryption, incident response and Reg S-P notifications |
Key APIs and integrations
Broker-dealer or custodian API: account opening, funding, orders, positions, statements, events
Identity and KYC: identity verification and sanctions screening, often run with the custodian's requirements
Bank linking and funding: ACH via account-linking providers; see our note on what a US wealth app must handle with Plaid Investments
Market and reference data: prices, security master, corporate actions
E-signature and document delivery: advisory agreement, Form ADV Part 2, Form CRS
Tax lots and reporting: cost basis and realised gains for tax-aware features
Compliance features to build
Disclosure delivery tied to user journeys, with timestamps and versions
Questionnaire versioning, inconsistent-answer flags and periodic re-profiling
Algorithm release workflow: tests, backtests, sign-off, client notice for material changes
Trade monitoring that compares executed trades with the model and flags exceptions
Client restrictions handled per account (for Rule 3a-4 programmes)
Marketing review queue for app copy, performance displays and referral campaigns
Books and records exports for exams
Incident response runbook with a notification workflow that meets the Reg S-P 30-day outer limit
Fee calculation audit trail
Cost and timeline drivers
We do not quote fixed prices. These are the drivers:
Driver | Why it matters |
Registration path | State registration, SEC registration and the internet adviser exemption carry different filing, policy and service-model constraints |
Service model | Pure digital vs hybrid with human advisers changes the product and the exemption you can rely on |
Custodian | API coverage, fractional support and onboarding requirements decide how much you build yourself |
Portfolio features | Tax-loss harvesting, direct indexing and goals planning add logic and testing |
Algorithm governance | Test harness, backtesting and monitoring are often underestimated |
Account types | Taxable, IRA and joint accounts each add workflows and documents |
B2B vs B2C | Platforms for RIAs need multi-tenancy, firm-level controls and white-labelling |
Build plan in phases
Decide your route and service model: own RIA, platform for RIAs, or partner model; pure digital or hybrid.
Choose the custodian and confirm account types, funding and fractional support.
Build onboarding, questionnaire and one model set, with disclosures and Form ADV/CRS delivery.
Add the portfolio engine, order management and monitoring, with the algorithm release workflow.
Run a compliance review and pilot with a small client group, then file or update Form ADV as needed.
Expand to tax-aware features, more account types or advisor-facing tools.
FAQs
Does a robo-advisor need to register with the SEC?
If it gives personalised investment advice for compensation, the firm behind it generally must register as an investment adviser with the SEC or the states. SEC registration generally becomes available at $100 million in RAUM and is generally required at $110 million, unless an exemption such as the internet adviser exemption applies.
What changed in the internet adviser exemption?
Amendments adopted on 27 March 2024 require an operational interactive website at all times, ongoing digital advice to more than one client, and advice to all clients exclusively through that website. The old de minimis exception was removed. Compliance was required by 31 March 2025.
Can a robo-advisor have human advisers?
Yes, but a hybrid model affects your registration path. An adviser relying on the internet adviser exemption must give advice to all clients exclusively through its interactive website, so firms with human-led advice usually register on another basis.
What does the SEC expect from a robo-advisor's algorithm?
The SEC staff guidance suggests written policies on developing, testing and backtesting the code, monitoring it after launch, disclosing material changes to clients and overseeing third parties that provide it.
Who holds the client assets in a robo-advisor?
Usually a qualified custodian, typically a broker-dealer, through an API. The adviser manages the accounts and sends trades; the custodian holds assets, settles trades and issues statements.
Do I need to build my own robo-advisor or license a platform?
It depends on your route. Firms that want to own the client experience and models usually build on a custodian API. Advisory firms that need speed often license a platform. Either way, the registered adviser stays responsible for the advice.
Build your robo-advisor with Fintegration
Fintegration builds wealth, trading and payments platforms for fintechs and advisory firms in the US and India. We help teams choose a registration route and custodian, design questionnaire and portfolio engines with audit-ready algorithm governance, and integrate broker APIs, account linking and reporting. Talk to our team to scope your robo-advisor build.
