How to Form a Startup LLC: The Ultimate Guide for Entrepreneurs

Your startup may have a prototype and a potential first customer before it has steady revenue. If you have decided to form an LLC, the state filing is only part of the job. You also need to agree on what each founder owns and how the business will pay its bills while sales are still uncertain.

An LLC is created under state law, and its owners are called members.¹ This guide focuses on setting one up for an early-stage US business: a solo founder or small founding team preparing to launch, working with limited cash, and making its first operating commitments.

We'll also discuss the Wise Business account. The global account that can help your company with all things cross-border.

Do you send and receive global payments?

Try Wise Business >>

Wise Trustpilot Score: 4.3 stars on 230,000+ reviews
No minimum balance requirement and no monthly fees
Integrates with QuickBooks, Xero, Sage, and more

What an LLC Setup Needs to Do for Your Startup

Benefits

For a small founding team, the aim is a workable setup before the business gets busy. You want to know who can approve an expense, where customer payments will go, and how the founders will record the money they put into the company.

Treat formation as the point where those arrangements become explicit, rather than another task to finish before returning to product development.

Considerations

If institutional investment or employee equity is central to your immediate plans, review the structure with counsel before filing. That is a separate decision from getting an LLC ready to launch; this guide assumes the LLC route fits your current plan.

Also avoid treating the company registration as a financial plan. It does not tell you how long your cash will last or resolve a disagreement between founders.

1. Map the Funding You Need Before Revenue Arrives

Start with the next meaningful milestone, such as completing a prototype or delivering your first paid pilot. Estimate what it will cost to get there and which expenses will continue afterward.

The SBA recommends separating one-time startup costs from recurring monthly expenses.⁴ For a founder, that distinction helps keep the registration budget in perspective: filing fees are one expense, while development tools and contractor invoices may continue for months.

Decide where that early cash will come from. If several founders are contributing, agree on how much each will provide and what happens if the business needs more before customer revenue arrives. Discuss with your advisers how contributions, founder loans, and compensation should be documented.

For example, a hypothetical startup with $18,000 available after setup costs and $3,000 in monthly spending has roughly six months of runway before allowing for revenue, taxes, or unexpected costs. That is a planning estimate, not a promise that the business can wait six months to make a sale.

2. Agree on Founder Ownership and Responsibilities

An operating agreement records how the LLC will be run. The SBA recommends creating one even where the state does not require it.³

For a startup with more than one founder, this deserves as much attention as the filing. One person may fund the launch while another builds the product or brings in customers. Agree on how those different contributions relate to ownership, rather than assuming equal shares will resolve every question.

Keep the discussion focused on three areas:

• Ownership and contributions: what each founder provides, what they own, and how further funding will be handled.
• Work and authority: who handles product, sales, and finances, and who can approve spending or sign contracts.
• Changes and departures: what happens if a founder leaves, stops contributing, or wants to bring in another owner.

If ownership is intended to depend on continued work or milestones, have a lawyer document that arrangement. Do not rely on a verbal promise that the details can be sorted out after launch.

Also ask counsel to address the code, designs, or other intellectual property developed before formation. Make clear what the company needs to own or license and what agreements are needed. A company filing is not a substitute for reviewing those arrangements.

For a solo founder, the same exercise can be shorter: record how you will manage the business and what you are contributing now, so the position is clear if a co-founder joins later.

3. Complete the Filing for Your Actual Launch Plans

Start with where the founders will operate. Working in more than one state may require additional registration and costs.³ Consider that before choosing a formation state based on another startup's experience.

Follow the state's naming rules, arrange a registered agent, and file the LLC formation document, commonly called articles of organization. Requirements and fees vary by state.³

Keep the official filing instructions open while preparing the application. The founders should agree on who will manage the LLC and check the information together before submitting it. Save the accepted documents alongside the operating agreement, rather than leaving the only copies in one person's inbox.

4. Set Up Taxes and an EIN Before Paying the Founders

For federal income tax purposes, a single-member LLC is generally disregarded as separate from its owner. A domestic LLC with two or more members is generally treated as a partnership. Eligible LLCs can elect corporate treatment instead.¹

Explain to your tax adviser whether the founders expect to take money out of the business or leave it available for growth. Agree on how payments to owners, business expenses paid personally, and tax reserves should be handled before the first transfer.

This matters particularly when sales are irregular. Do not treat the balance in the business account as money available to divide between the founders without accounting for upcoming bills and taxes.

After forming the entity with the state, apply for an employer identification number, or EIN. The IRS issues EINs free of charge.²

Check the IRS requirements and application options for your circumstances. Set this up early enough that account opening and other launch tasks do not depend on a last-minute application.

5. Record Founder Funding and Pre-Launch Spending

Open a dedicated business account and establish a simple bookkeeping routine. If you need the account-opening steps, see our guide to opening a business bank account for an LLC.

Start with the transactions that happened before launch. Gather receipts for prototype development, subscriptions, and other costs the founders have already paid. Ask your accountant how to record them rather than treating every transfer from a founder as revenue or assuming every expense is immediately deductible.

Keep a record of who provided money, when it arrived, and the agreed purpose. If one founder pays another development invoice, update the records then, not months later when you are trying to work out who funded what.

Give someone responsibility for a regular cash review. Compare actual spending with the launch budget and the next milestone. A startup needs to know whether it can afford its next commitment, not just whether the account has a positive balance today.

---

Wise Business Could Help Your Company Save on Global Payments

---

6. Get Ready for the First Customer and First Hire

Before sending your first customer contract, decide who can sign it and approve changes to the terms. Ask counsel to review how the LLC should be identified and how any commitments made before formation should be handled.

Make the payment process equally clear. For a paid pilot, for example, agree on the deposit, invoicing schedule, and when the remaining payment is due. Reflect that timing in the cash forecast: winning a customer is not the same as having the money available to pay a contractor.

Before hiring, check employment and payroll requirements. The IRS requires an EIN in circumstances including having employees.² If you plan to offer someone ownership as part of compensation, get legal and tax advice before making the offer.

Check state and local licensing requirements before trading; LLC formation does not replace required licenses or permits.³

7. Assign the Admin Work Before the Team Gets Busy

Decide which founder will track filings, maintain ownership records, and coordinate with the accountant. A small team does not need a large administrative process, but it does need an owner for the work.

State obligations may include initial reports, annual or biennial filings, fees, and franchise taxes.⁵ Record the applicable dates and budget for those costs even if the startup has not yet reached steady revenue.

Keep formation documents, founder agreements, and financial records together. Update them as contributions and responsibilities change. That makes it easier to bring in an adviser or review a funding opportunity without first reconstructing the company's history.

Revisit the setup before adding an owner, promising equity, or expanding into another state. Those are useful checkpoints for professional advice, rather than reasons to redesign everything every time the business wins a new customer.

Open a Wise Business Account: Manage Your US Business Finances With Ease

Once you have established your business with an LLC, you’ll need a business account to manage your US finances. A Wise Business account is easy to open online and comes with no monthly fees. You can convert funds from your home currency to USD with low, transparent fees.

Wise is not a bank, but a Money Services Business (MSB) provider and a smart alternative to banks. The Wise Business account is designed with international business in mind, and makes it easy to send, hold, and manage business funds in 40+ currencies. You can get major currency account details for a one-off fee to receive overseas payments like a local. You can also send money to 140+ countries.

Open a Wise Business account online

Final Thoughts

For a startup, a useful LLC setup answers more than where the company is registered. It makes clear who owns the business, who can commit its money, and how the founders will fund the period before reliable revenue.

Complete the filing, but give equal attention to those early operating decisions. You want the first customer to move the business forward without exposing an unresolved disagreement about ownership or spending.

---

Frequently Asked Questions (FAQ)

What Should Co-Founders Agree on Before Forming a Startup LLC?

Agree on ownership, contributions, responsibilities, and who can approve spending. Discuss what happens if someone leaves or the business needs more funding. Have a lawyer document the arrangement rather than relying on an informal understanding.

How Should Founders Handle Costs Paid Before Launch?

Retain receipts and record who paid each cost. Ask an accountant how to treat the spending and any reimbursement or contribution. Do not assume that paying personally makes an expense immediately deductible or automatically changes your ownership percentage.

What Should a Startup LLC Review Before Bringing in Another Owner?

Review the operating agreement, current ownership and contribution records, and the proposed new member's role. Get legal and tax advice before making an ownership commitment, including one offered as compensation for work.

---

Sources:

1. Limited Liability Company (LLC) | Internal Revenue Service
2. Employer Identification Number | Internal Revenue Service
3. Launch Your Business | U.S. Small Business Administration
4. Plan Your Business: Calculate Startup Costs | U.S. Small Business Administration
5. Manage Your Business | U.S. Small Business Administration