Form businesses programmatically
The same engine we use for the dashboard, exposed as a REST API. Form entities, request EINs, track compliance, sync documents to your own product. Stable v1 with OAuth, webhooks, and SDKs in Python, Node, Ruby, Go, PHP.
Quickstart
$ pip install filebusiness
# Form an LLC
from filebusiness import Client
client = Client(api_key="fb_live_...")
formation = client.formations.create(
entity_type="llc",
state="DE",
name="Acme Holdings LLC",
members=[{"name": "Jane Smith", "role": "managing_member"}],
)
>>> formation.status
"submitted"
>>> formation.estimated_completion
"2026-06-05T14:00:00Z"
Resources
Create LLCs, C-Corps, S-Corps, nonprofits across 51 states.
POST /v1/formationsSubmit Form SS-4 to the IRS. Instant for US founders, 4 days international.
POST /v1/ein-requestsTrack and auto-file annual reports, registered agent renewals, state changes.
GET /v1/compliance/deadlinesRetrieve filed Articles, OAs, EIN letters, and state correspondence.
GET /v1/documents/{id}Subscribe to formation status changes, document delivery, compliance alerts.
POST /v1/webhooksBuild apps users can authorize to act on their File.Business account.
GET /oauth/authorizeSDKs and tools
pip install filebusinessnpm install filebusinessgem install filebusinessgo get filebusinesscomposer require filebusinessRun in Postman →Who uses the API
Accounting firms onboarding entire client books. Venture studios that form 30+ companies a year. Lawyers automating routine filings. ISVs embedding entity formation in their products.
Venture studios
Programmatic incorporation for portfolio companies. Single source of truth across 30+ entities.
Accounting platforms
Embedded entity formation inside their existing client onboarding flow.
Law firms
Automated annual report filings across entire client portfolios.
Every filing, traceable from submission to state seal
The same status view your customers see in the dashboard. Five stages, color-coded, with timestamps. No "we'll let you know" black box.
Your filing is in progress
State of Delaware Division of Corporations · Expected acceptance: same business day
The numbers behind a business operating system you can trust
Audited, accredited, encrypted, insured. The complete picture of what makes File.Business safe to run your business on.
Independent annual audit. Report available under NDA for enterprise customers.
Better Business Bureau accredited business with public dispute resolution policy.
Across all 50 states + DC. Single-member LLCs to multi-entity holding structures.
Customer rating from verified-formation customers, audited annually.
Professional liability coverage. Penalty-free guarantee covers state late fees from our error.
All 50 states plus DC. Filing direct with each Secretary of State; no middleman.
Countries. Foreign founders without SSN supported via IRS fax-EIN channel.
How we deliver, end-to-end.
Four-step path from request to confirmation. State and IRS turnaround varies; our steps run in parallel where possible to compress the timeline.
Intake + scope
You tell us what you need through a short intake form (or a call for complex matters). We confirm scope, surface any gating issues (deadlines, missing documents, entity status), and quote any state fees that pass through at cost.
Prepare + verify
Our specialists draft the filing, verify entity details against state databases, run internal QA, and route any items needing your sign-off. You see drafts before anything gets submitted.
File with the authority
We submit directly to the state Secretary of State, FinCEN, IRS, USPTO, or whichever authority your filing requires. We pay state fees at cost and track the submission identifier in your account.
Confirmation + vault
Stamped certificate, IRS notice, or filing receipt arrives in your SOC 2 encrypted document vault the moment we receive it. Next filing deadline auto-added to your compliance calendar where applicable.
Built on the same infrastructure used by 220,000+ businesses.
SOC 2 Type II audited
Independent annual security audit covering access control, change management, incident response, and data handling. Current report on request.
All 51 US jurisdictions
Every state plus DC plus Puerto Rico - direct filings, not third-party reseller. We hold registered-agent qualifications in every state we operate.
Deadline guarantee
If we miss a filing deadline on a service you pay us to manage, we pay the state penalty. Specific to each plan and the filings it includes.
4.9 from 8,200+ verified reviews
Independently verified by Trustpilot + Google + our own NPS infrastructure. Customer success team within reach by email, chat, or phone.
60-day money-back promise
Change your mind in the first 60 days and we refund our service fee in full. State filing fees pass through at cost and are non-refundable once paid to the state.
E&O insured
Errors and omissions coverage protects you from service errors. Carrier and certificate available on request for enterprise clients.
Recommended add-ons
Most customers add these to keep their business compliant year-round.
Registered Agent
Most orderedRequired for every registered business entity in every state.
Compliance Monitoring
Best valueTrack every annual report, registered agent renewal, and license deadline.
Annual Report Filing
RecommendedAuto-file your state annual report. Never miss a deadline.
Premium compliance, no service-fee markup.
Trust you can verify
SOC 2 Type II audited platform. 220,000+ businesses served. 60-day money-back on service fees. State fees passed through at cost with no hidden markup. Explicit AUP on restricted industries.
A compliance partner, not a transaction
Most providers go quiet after checkout. We auto-track every annual report, registered agent renewal, and license deadline across your entities. The Business OS dashboard keeps your compliance score visible year-round.
Premium experience competitors cannot match
Premium positioning, transparent pricing, no service-fee markup on state or federal filings. Premium positioning, transparent pricing, no service-fee markup on state filings.