MarketUnited States

Custom Software Development for Businesses in the United States

Alpha ExpansionMarket notes reviewed October 2026
In short

We design and build custom software for businesses that operate in the United States. There is no single national rulebook here. Privacy law varies by state and by sector, accessibility is enforced largely through lawsuits, and sales tax changes at every state line. We work out which of these apply to your system during discovery and build to them, so the software holds up when a customer, an auditor or a lawyer looks closely.

Key points
  • 01Privacy rules come from states and sectors, not from one federal law
  • 02Accessibility is expected of any system the public uses
  • 03Larger customers will ask for evidence of your security controls
01

What shapes a software project in the United States

The United States regulates software indirectly, through the data it holds, the people it serves and the money it moves. Which rules reach your system depends on your states, your sector and your customers.

TopicWhat it means for your systemDecide early
Privacy by stateAround twenty states had comprehensive consumer privacy laws in effect when this page was reviewed, led by California, with more scheduled. Each gives residents rights to see, correct and delete their data, and each sets thresholds for which businesses are coveredWhich states your users live in, and whether you meet each law's thresholds
Sector rulesHealth information handled for providers and insurers falls under HIPAA, financial institutions follow the Gramm-Leach-Bliley Act, student records fall under FERPA and services for children under 13 fall under COPPAWhether the system touches any of these kinds of data
AccessibilityCourts and the Department of Justice treat the websites and apps of businesses open to the public as covered by the Americans with Disabilities Act, and WCAG at Level AA is the working standard. State and local governments have dated deadlines of their ownThe WCAG version you will build to, and how it will be tested
Sales taxEach state decides whether software and digital services are taxable, and a seller can owe tax in a state where it has customers but no premisesWhether a tax service calculates every invoice
Payments and signaturesCards dominate consumer payments, while businesses pay each other by ACH bank transfer and, increasingly, over real-time networks. Electronic signatures are valid under federal and state lawWhich payment and signature services the system connects to
Text messages and callsFederal law requires consent for automated texts and calls, and carriers ask businesses to register their brand and message types before an application sends textsWhat the system sends, and who registers it
Security reviewsLarger customers send security questionnaires and often ask for an audit report such as SOC 2. That is a market expectation, not a statuteWhich controls and records the system must be able to show
02

Workflows we build for American businesses

Four systems in which the American details decide the design.

Customer onboarding with e-signature

For lenders, insurers, property managers and service firms that sign agreements remotely.

  1. Application completed online
  2. Identity and details checked
  3. Agreement signed electronically
  4. Bank account linked for ACH
  5. Account opened
  6. Welcome message sent with consent on file

Field service across state lines

For companies whose crews, customers and tax rules span several states.

  1. Job booked by phone or web
  2. Crew dispatched from the nearest branch
  3. Work recorded on a tablet
  4. Tax worked out for the job's location
  5. Invoice emailed
  6. Paid by card or ACH

Trade ordering portal

For distributors and manufacturers that take repeat orders from business accounts.

  1. Buyer signs in to a company account
  2. Contract prices shown
  3. Order placed against payment terms
  4. Order passed to the ERP
  5. Shipment tracked
  6. Invoice settled by ACH

Patient or client intake

For practices that still collect forms on paper at the front desk.

  1. Forms sent before the visit
  2. Completed on a phone
  3. Insurance details captured
  4. Staff review the exceptions
  5. Record created in the practice system

Where a system handles protected health information, a business associate agreement is needed with each vendor that touches it. We develop against test data, so real records stay with you until those agreements are in place.

03

What we build

01

Line-of-business applications

Systems for sales, operations, service and finance teams, shaped around your process instead of a vendor's template.

02

Privacy request tools

Screens and logs that let your staff find, export, correct and delete one person's data when a state law gives them that right.

03

Accessible interfaces

Design and code checked against WCAG with automated scans and with manual testing by keyboard and screen reader.

04

Integrations

Links to your ERP, CRM, payment processor, tax engine and e-signature service, built on their published APIs.

05

Audit-ready engineering

Access control, logging, encryption and change records arranged so the evidence a security audit asks for comes straight from the system.

06

Modernization

Step-by-step replacement of aging systems while the business keeps running. See legacy software modernization.

04

What we need from you

  • The states you operate in and sell to
  • Your counsel's view on which privacy and sector laws apply
  • Access to the systems to be connected, or to their owners
  • Any security questionnaire a customer has already sent you
  • A product owner with authority over scope

Ownership and licensing terms are defined in the project agreement.

05

A readiness checklist for a US project

Before development starts

0 of 7 checked
06

What to do next

Tell us what the system has to do, which states and sectors it serves and what it must connect to. We will come back with an approach and the decisions to take first. Start a conversation or book a 30-minute call.

Weighing an outside team against hiring? Our comparison of in-house development and a studio sets out when each makes sense.

07

Common questions

Which privacy laws apply to our software in the United States?

It depends on who your users are and what data you hold. There is no single federal privacy law. Around twenty states have comprehensive laws, each with thresholds that decide which businesses are covered. Sector laws apply regardless of size to health, financial, student and children's data. The Federal Trade Commission also acts against companies whose practices do not match their privacy promises. Your counsel confirms the list, and we build the controls.

Does the ADA apply to our website or app?

If your business serves the public, assume it does. The Department of Justice's position is that the Americans with Disabilities Act covers online services, and private lawsuits over inaccessible websites are common. No regulation sets a technical standard for private businesses, but WCAG at Level AA is what courts, settlements and buyers refer to. State and local governments have a formal rule with compliance dates.

Do we need a SOC 2 report?

No law requires one. It becomes necessary when customers ask for it, which is common once you sell software or services to larger companies. The report comes from an independent auditor who examines your company's controls over a period. Software can make that audit far easier by producing access logs, change records and backups as a matter of course. We build with those requirements in view, and the audit itself is yours to arrange.

How should our software handle sales tax across states?

Record where each customer is and let a tax service work out the rest. Every state sets its own rules on whether software and digital services are taxable, and a seller can owe tax in a state where it has enough sales, even with no premises there. Hard-coding rates does not hold up, because rules and rates change. Your accountant decides where you register, and the system applies the result on every invoice.

Next

Where to go from here

Next step

Tell us about your project

Describe what you want to build and the systems it has to work with. We reply with how we would approach it and which decisions come first. The scoping conversation is free.

Response within 24 hoursFree consultation and scopingNDA available on request

Premium digital product and engineering studio. We build high-performance web platforms, SaaS applications, mobile apps, and 3D experiences for high-growth companies.

Alpha Expansion is a premium digital product and engineering studio specializing in React development, Next.js development, full-stack development, mobile app development, UI/UX design, and 3D interactive experiences.

We serve industries including SaaS, FinTech, Healthcare, E-commerce, Logistics, and Real Estate.