Legal Considerations for Startups: A Founder's Checklist

The main legal considerations for startups are: choose and register the right entity, sign a founders’ agreement, make sure the company owns its intellectual property, put relationships with customers, suppliers and staff into written contracts, and comply with data protection law and any licence your sector needs. Then keep the company in good standing with its annual filings. The details depend on the country where you form the company and where you operate; the US and UK examples below are labelled as such.

What is on a startup legal checklist?

Work through these in roughly this order. Each item is cheaper to do at the start than to repair during an investor’s due diligence.

#	Item	When
1	Choose an entity and register it	Before taking money, hiring or signing contracts
2	Founders’ agreement (equity, vesting, roles, leavers)	At formation
3	IP assignments from founders, employees and contractors	At formation, then with every new hire or contractor
4	Name and trademark check, then registration in key markets	Before launch and marketing spend
5	Customer terms, privacy notice, supplier and staff contracts	Before the first sale or hire
6	Data protection and sector licences	Before launch in each market
7	Tax registrations, accounts and annual filings	From formation, every year

Which business structure should a startup choose?

Choose a structure that separates the business’s debts from your personal assets and can issue shares to co-founders and investors. In most countries that means a limited company or corporation; the names and tax treatment differ.

United States (SBA):

Structure	Liability	Tax	Fits
Sole proprietorship	No separate entity; you are personally liable	Personal return	Testing an idea alone, low risk
Partnership (LP / LLP)	LP: the general partner has unlimited liability; LLP: limited for every partner	Passed through to partners	Several owners, professional groups
LLC	Protects personal assets in most cases	Profits can pass through; members pay self-employment tax	Owners who want protection and pass-through tax
C corporation	Strongest protection; separate from owners	Pays corporate tax; dividends can be taxed again	Raising money by selling shares, an eventual sale or listing
S corporation	As a corporation	Profits pass through to owners	Small domestic companies within the IRS limits

The S corporation limits matter for international founders: it must be a domestic corporation with no more than 100 shareholders, one class of stock, and no partnership, corporate or non-resident alien shareholders (IRS). A startup with a foreign founder or a venture investor that is a fund usually cannot use it.

United Kingdom: most businesses register as a sole trader or a limited company. A limited company is legally separate from its owners, whose liability is limited to their investment; a sole trader is personally responsible for all the business’s debts (GOV.UK).

Where to incorporate is a separate decision: it depends on where the founders live and pay tax, where customers and banks are, what investors expect and whether the activity needs a licence. Our validation guide covers when to form the company, and our company formation service compares jurisdictions.

What should a founders’ agreement cover?

A founders’ agreement records who owns what and what happens when circumstances change. It can be a stand-alone contract or part of the shareholders’ agreement, articles, bylaws or operating agreement, depending on the entity. Cover at least:

• Equity split and the price or contribution for each founder’s shares.
• Vesting: founders earn their shares over time, and the company can buy back unvested shares if a founder leaves early.
• Roles and decisions: who decides what, and which decisions need all founders or a majority.
• Leavers: what happens to a departing founder’s shares, and at what price.
• IP: each founder assigns to the company everything they created for the business, including work done before formation.
• Deadlock and disputes: how a disagreement is escalated, mediated or arbitrated, and under which law.

How does a startup make sure it owns its intellectual property?

Get a written assignment from everyone who creates something for the company, and do not assume that paying for work makes you the owner.

• Copyright and code (US): a work made by an employee within the scope of their job is a “work made for hire”, owned by the employer. A commissioned work is a work made for hire only if it falls into one of nine listed categories and there is a written agreement, signed by both parties, saying so (U.S. Copyright Office, Circular 30). Software is not one of the nine categories, so code from an independent contractor generally needs a signed assignment to belong to the company. Other countries have their own rules on employee and commissioned works; the practical approach everywhere is an express written assignment.
• Trademarks: registration is not required in the US, but where and whether you register determines the scope of your rights, and there is no worldwide trademark; each country’s office decides on its own registration (USPTO).
• Patents: file before any public disclosure if you may want protection in Europe; grace periods differ by country (see Can talking about your idea in public cost you a patent?).
• Trade secrets and confidential information: protect them with confidentiality clauses in employment and contractor agreements, NDAs with partners, and access controls.
• Open-source software: keep a list of the open-source components in your product and their licence terms, because some licences impose conditions when you distribute the software.

Which contracts does a startup need?

You need written contracts for every relationship that involves money, confidential information or intellectual property.

Contract	With	Key terms to check
Founders’ / shareholders’ agreement	Co-founders, investors	Equity, vesting, leavers, decisions, transfer restrictions
Employment contract	Employees	Duties, pay, equity, confidentiality, IP assignment, notice, restrictive covenants (enforceability varies by country and state)
Contractor agreement	Freelancers, agencies	Scope, payment, deadlines, IP assignment, confidentiality
NDA	Partners, suppliers, prospective hires	What is confidential, permitted use, duration, exclusions
Customer terms / service agreement	Customers and users	Scope, price and payment, liability limits, termination, governing law, disputes
Privacy notice	Users whose data you collect	What you collect, why, legal basis, recipients, rights
Supplier and data-processing agreements	Vendors, SaaS providers	Service levels, liability, data protection terms
Investment documents	Investors	Instrument (shares, convertible note or similar), valuation, rights, securities-law compliance

Electronic signatures are generally valid for commercial contracts. In the US, a contract may not be denied legal effect solely because it is in electronic form (15 U.S.C. § 7001); in the EU, an electronic signature may not be denied legal effect solely because it is electronic, and a qualified electronic signature has the same effect as a handwritten one (eIDAS, Art. 25). Some documents are excluded or need a particular form, so check before signing deeds, real-estate or court documents electronically.

Templates are a starting point, not a finished contract. Before you sign anything material, have it reviewed against your deal: our contract review service explains the risks in plain language and proposes changes.

Which regulations apply from day one?

Data protection, any licence your activity needs, employment rules once you hire, and tax registration. Which country’s rules apply depends on where you operate and where your customers are.

• Data protection (EU): the GDPR applies to businesses outside the EU that offer goods or services to people in the EU or monitor their behaviour there (GDPR, Art. 3). If a vendor processes personal data for you (hosting, email, analytics, CRM), the GDPR requires a contract setting out the subject matter, duration, purpose and the processor’s obligations (Art. 28).
• Sector licences: payments, lending, crypto-asset services, gambling, health and financial advice are commonly licensed activities. Check before launch in each market; our licensing service covers gaming and payment licences.
• Employment: once you hire, local rules on contracts, minimum pay, working time, social insurance and the line between employees and contractors apply.
• Tax: register for the taxes that apply where you operate, keep accounts from the first transaction and calendar your filing deadlines.

How do you keep the company in good standing?

File the annual returns and accounts your registry and tax authority require, keep minutes of major decisions, keep business and personal money in separate accounts, and keep signed contracts and the cap table in one place. Investors and acquirers check all of these in due diligence. Missed filings can lead to penalties; the consequences depend on the country, so check them with your registry and tax authority.

Frequently asked questions

Is an LLC or a corporation better for raising investment?

In the US, the SBA notes that corporations have an advantage in raising capital because they can sell stock (SBA). Many founders who expect to raise venture funding therefore form a corporation from the start. Outside the US, the equivalent is usually a company limited by shares.

Can I use free contract templates?

For low-risk, routine documents, a template can be a reasonable start, but it will not reflect your deal, your governing law or your risks. Have founders’ agreements, customer terms and anything involving significant money or IP reviewed before signing.

Do I need a privacy policy if I only collect email addresses?

If the people are in the EU, yes: the GDPR requires you to give them information about the processing when you collect their data (Art. 13), and an email address is personal data. Other countries have similar rules.