Documents You Need to Start a Business: Checklist

What documents do you need to start a business? You need a business plan, formation documents (articles of organization or incorporation), an EIN from the IRS, an operating agreement or bylaws, federal/state/local licenses, a business bank account application, an insurance policy, and your everyday contracts — typically 8 to 15 core documents in total for a new U.S. small business.

The right paperwork is the difference between a business that runs smoothly and one that runs into fines, lost deals, and tax surprises. This complete checklist of the documents you need to start a business covers every form a new U.S. small business owner is likely to need — with free templates you can download for the day-to-day forms. Use it as a master list when you launch, when you hire your first employee, and at year-end when you file your first business tax return.

Why Having the Right Documents Matters

Most new founders treat paperwork as an afterthought, then scramble when a bank, landlord, investor, or auditor asks for proof. Having your documents organized from day one makes it easier to open a business bank account, qualify for funding, sign a lease, hire your first employee, and survive a tax audit. It also helps you separate personal liability from business liability — which is the whole reason most founders form an LLC in the first place.

Banks, the IRS, and the state all see your business through the documents you produce. If the documents are missing, conflicting, or out of date, you can lose deals, get audited, or have your liability protection challenged. A clean document set is one of the cheapest forms of insurance a founder can buy.

Essential Documents to Start a Business — Checklist

Document	Why You Need It	Who Issues It
Business plan	Roadmap for operations, funding	You / your team
Articles of organization / incorporation	Creates the legal entity	Secretary of State
EIN confirmation letter (CP 575)	Federal tax ID for the business	IRS
Operating agreement (LLC) / bylaws (corp)	Internal rules for owners	You
DBA / fictitious name certificate	If you use a trade name	County or state
Business license / general operating permit	Legal permission to operate	City / county
Sales tax / seller’s permit	Collect and remit sales tax	State revenue dept.
Business bank account application	Open a dedicated business account	Your bank
Insurance policy	Liability and property protection	Insurer
Beneficial Ownership Information (BOI) report	Federal anti-fraud disclosure	FinCEN
Contracts and everyday forms	Daily operations	You / templates

1. A Written Business Plan

A business plan is the first document you should create. Even a one-page version that covers your offering, target customer, pricing, monthly costs, and revenue goals will save you from expensive mistakes. Lenders and investors will ask for a full plan if you raise money, and the SBA recommends a written plan for every loan application.

A typical small business plan includes an executive summary, market analysis, competitive landscape, product or service description, marketing plan, operations plan, management bios, and three years of financial projections. Keep the plan in a single document so you can update it once a quarter as the business changes.

2. Business Formation Documents

The exact paperwork depends on your structure:

LLC: Articles of Organization (sometimes called Certificate of Formation)
Corporation: Articles of Incorporation
Partnership: Partnership agreement and a Statement of Partnership Authority
Sole proprietorship: Usually no state filing — just a DBA if you use a trade name

Compare structures before filing: see our guides on LLC vs sole proprietorship and DBA vs LLC to pick the right path. Once filed, your state will return a stamped copy of the document — keep both a digital PDF and a printed original in a fireproof folder.

3. Employer Identification Number (EIN)

An EIN is the federal tax ID for your business. You can apply for one for free from the IRS website and the EIN is usually issued instantly. You need it to open a business bank account, hire employees, file business taxes, apply for most business licenses, and file the BOI report with FinCEN.

The IRS issues the EIN inside an official letter called the CP 575. You will only receive this letter once — save a PDF copy and store the printed original. If you lose it, the IRS issues a substitute letter (147C), but it takes weeks and many banks specifically ask for the original CP 575.

4. Operating Agreement or Bylaws

An LLC operating agreement (or corporate bylaws) is the internal rulebook for how the business is run, who owns what percentage, how decisions get made, and what happens if an owner leaves. Even single-member LLCs should have one — many banks now require it before opening a business account, and it strengthens your liability protection in court.

A solid operating agreement covers ownership percentages and capital contributions, voting rights, profit and loss allocations, manager versus member management, transfer restrictions on ownership, what happens on the death or disability of an owner, and procedures to wind up the LLC. You do not need a lawyer to draft a simple single-member agreement, but multi-owner LLCs benefit from professional review.

5. Business Licenses and Permits

Most businesses need at least one local license. Some industries need professional licenses, health permits, or federal permits. The full breakdown is in our guide on how to get a business license. Common licenses include:

City or county general business license
State sales tax permit
Home occupation permit (for home-based businesses)
Zoning clearance
Industry-specific permits (food, salon, contractor, childcare)
Federal permits (alcohol, firearms, transportation, broadcasting)
Professional licenses (real estate, accounting, cosmetology, legal)

6. Documents to Open a Business Bank Account

Most banks will ask for:

EIN confirmation letter (CP 575)
Articles of organization or incorporation
Operating agreement or bylaws
Government-issued photo ID for each owner with 25%+ stake
Business license (sometimes)
DBA certificate (if applicable)
Initial deposit (varies by bank)

Read the full step-by-step in our guide on the business bank account for an LLC. Once your account is open, every business transaction should run through it — never co-mingle with personal funds.

7. Contracts and Everyday Forms

These are the daily forms that keep a business running. Download free templates by category:

Invoices — for billing customers
Receipts — proof of purchase and payment
Employment forms — offer letters, onboarding, time sheets
Real estate / lease forms — leases, sublets, property records
Money & bookkeeping forms — expense reports, budget templates, payment logs
Office & admin forms — meeting minutes, memos, registers

Other contracts you may need from day one: a master service agreement, a mutual non-disclosure agreement, an independent contractor agreement, a privacy policy and terms of service for your website, and a refund/return policy for any goods sold.

Documents by Business Structure

Sole proprietorship documents

DBA filing (if using a trade name)
Business license
EIN (optional but recommended)
Sales tax permit (if selling goods)
Self-employment tax records

LLC documents

Articles of organization
Operating agreement
EIN
Business license
Sales tax permit
Beneficial Ownership Information (BOI) report
Annual report filings

Corporation documents

Articles of incorporation
Corporate bylaws
Stock certificates and stock ledger
Initial board meeting minutes
EIN
Business license
Annual board meeting minutes
S-corp election (Form 2553), if applicable

Tax and Registration Documents

Beyond the formation paperwork, plan to register and file:

State tax registration (sales, employer, franchise, depending on the state)
Federal tax forms (Schedule C, 1120, 1120-S, or 1065 — depends on structure)
Quarterly estimated tax vouchers (Form 1040-ES for sole props/LLCs, 1120-W for C-corps)
Employer forms if you hire staff (W-9, W-4, I-9, Form 941)
1099-NEC forms for independent contractors
State unemployment insurance registration
Workers’ compensation insurance registration (in most states with employees)

Tracking taxes is much easier with consistent templates — start with our money and tax forms. The SBA also offers a free small business tax overview that walks through the federal calendar by entity type.

Industry-Specific Documents

Some industries need extra paperwork before opening:

Food service: Food handler permit, health inspection certificate, weights and measures registration, allergen training certificate
Real estate / property management: Real estate license, lease templates, tenant background check forms, trust account records
Construction: Contractor’s license, bond, insurance certificate, lien waivers, OSHA training records
Healthcare: HIPAA acknowledgment forms, professional license, malpractice insurance, DEA registration (if prescribing)
Childcare: State childcare license, background check, CPR certification, parent handbook
Transportation: DOT number, commercial driver’s license, IFTA registration, cargo insurance
Online sales / e-commerce: Privacy policy, terms of service, refund policy, sales tax permits in each nexus state

Beneficial Ownership Information (BOI) Report

Most new LLCs and corporations formed in 2024 or later must file a BOI report with the Financial Crimes Enforcement Network (FinCEN) within 90 days of formation. It identifies the beneficial owners of the company (anyone with 25% or more ownership or substantial control). Filing is free, but the penalties for missing it are steep — up to $591 per day. Add it to your launch checklist alongside the EIN.

How to Organize Your Business Documents

Create one folder per category: Formation, Tax, Licenses, Banking, Contracts, HR, Insurance.
Store digital copies in cloud storage with two-factor authentication.
Keep paper originals of articles, EIN letter, and licenses in a fireproof box.
Share read-only access with your accountant and attorney.
Set calendar reminders for every renewal date.
Back up your records monthly.
Keep a written index of every document, where it lives, and when it expires.

Where to Find Document Templates and Tools

You do not need to draft most everyday documents from scratch. Free, well-tested templates exist for the vast majority of small business paperwork, and using them saves both time and the legal review fees you would otherwise pay an attorney for routine work.

State business portal: Articles of organization templates and online filing — every state offers this for free.
IRS website: Free EIN application, W-9, W-4, I-9, Form 1099-NEC, Form 1040-ES, and every other federal tax form.
FinCEN.gov: Free BOI report filing portal.
BusinessFormsPro form library: Daily-use templates for invoicing, employment and HR, bookkeeping, leases and property, and office and admin.
SBA.gov: Free business plan template and lender match service.

When choosing between paid and free templates, the key question is whether the document will be used in a high-stakes transaction. A purchase order template, expense report, or time sheet can safely come from a free template library. A multi-million-dollar contract, a partnership agreement with unequal contributions, or anything involving real estate transfer should be reviewed by an attorney in your state.

Common Mistakes to Avoid

No operating agreement. Even single-member LLCs need one — courts have pierced the liability veil for owners who skipped it.
Mixing personal and business finances. Without a separate business bank account, the IRS and creditors can treat your LLC as a sole proprietorship.
Not updating records. When ownership, address, or activity changes, update the state, the IRS, and your bank.
Skipping the BOI report. Most new LLCs and corporations must file with FinCEN within 90 days of formation.
Losing the EIN letter. Save the CP 575 PDF in two places — banks ask for it, and the IRS does not reissue the original.
Using unsigned contracts. A handshake deal is hard to enforce. Even template agreements should be signed before any money changes hands.
Letting the registered agent address go stale. If the state sends a notice and you do not respond, your business can be administratively dissolved.

How to Update Documents Over Time

Business documents are not “set and forget” — they need maintenance. Review your operating agreement any time ownership percentages change, you bring on a new member, or you change how the business is managed. Update the BOI report with FinCEN within 30 days of any change to beneficial owners or company information. Refile your DBA every 1–5 years depending on the state. And revisit your business plan once a quarter so projections stay realistic.

Frequently Asked Questions

What is the most important document to start a business?

For most U.S. small businesses, the articles of organization (LLC) or articles of incorporation (corporation) is the single most important document — it legally creates the business entity. Without it, the rest of the documents have nothing to attach to.

Do I need a lawyer to prepare my business documents?

Not for most small businesses. State websites accept self-filed formation documents, and free templates handle most everyday forms. Hire a lawyer when you have multiple owners with unequal contributions, you are raising outside money, or you are entering a heavily regulated industry such as healthcare, finance, or cannabis.

How long should I keep business documents?

Permanently for formation documents, EIN letter, ownership records, and major contracts. Seven years for tax returns and supporting records. At least three years for routine receipts and bank statements. Always confirm with your accountant — some industries (healthcare, finance) require longer retention.

Once your documents are in order, you are ready to move on. Next, see our complete guide to starting a business step by step or learn how much it costs to start an LLC so you can budget the first year.