How to Launch an Online Store in the U.S.: Step-by-Step

To launch an online store in the United States, you need to define what you sell, set up your business legally, choose a platform, connect payments, handle sales tax, add products and policies, test checkout and then open to customers. Most sellers can complete the essentials in a few weeks if their paperwork is ready. The steps below are in the order that causes the fewest delays, because payment providers and banks often check that your business details match across every document.

Step 1: Define the product, customer and economics

Before touching software, write down what you will sell, who buys it, and whether the numbers work. Calculate the landed cost per unit (product, packaging, inbound shipping), the selling price, and the expected margin after platform fees, payment fees, shipping and returns. A product with a thin margin can disappear into fees. Use the platform cost calculator to estimate how much of a typical order goes to processing and fixed monthly costs.

Check whether your product is regulated. Food, supplements, cosmetics, children's products, electronics with batteries, alcohol and some other categories can require labeling, testing or licenses, and payment providers may restrict some of them.

Step 2: Set up the business

Choose a structure: sole proprietorship, LLC, partnership or corporation. Each has different liability and tax effects, and state rules vary. An accountant or attorney can help you decide. Then:

1. Register your business name with your state or county as required.
2. Get any local or state business license.
3. Apply for an Employer Identification Number (EIN) from the IRS if needed. The IRS provides this for free; avoid sites that charge for it.
4. Open a business bank account in the name of the business.

Step 3: Sort out sales tax

Check whether you need a seller's permit or sales tax registration in your home state, and whether sales into other states trigger collection duties. See sales tax for online sellers. Do this before launch so you can configure tax settings correctly rather than fixing orders later.

Step 4: Choose the platform

Pick the model that matches your skills and budget: hosted, open source or marketplace. Shortlist two or three options, build a test store in each trial, and compare total costs. The guide on choosing the right ecommerce platform lists decision criteria, and hosted vs open source vs marketplace explains the trade-offs.

Step 5: Connect payments

Apply for the payment account early because review can take days. Typical requirements are business details, a tax ID, your identity, a bank account and a description of your products and website. See documents needed to sell online. Keep the legal name, address and tax ID consistent everywhere.

Step 6: Build the store

Add products with clear titles, accurate descriptions, quality photos, variants and prices. Configure shipping rates (flat, weight-based, free over a threshold or carrier-calculated), taxes, and email notifications. Create essential pages:

• About page with who you are and where you operate
• Contact page with a working email and, if you have one, an address
• Shipping, returns and refund policies
• Privacy policy and terms of service
• FAQ for the questions you expect

Step 7: Write honest policies

Clear policies reduce disputes. State processing time, shipping options, return windows, who pays return shipping, and how refunds are issued. U.S. rules require sellers to ship within the time they promise, or within 30 days if no time is stated, under the FTC's Mail, Internet, or Telephone Order Merchandise Rule, and to notify customers of delays and offer options. Check the FTC for the current wording.

Step 8: Test everything

Place a real order with a real card, then refund it. Test on a phone, with a discount code, with an out-of-state address to check taxes, and with the order emails. Ask a friend to try buying without help. Fix confusing steps.

Step 9: Prepare to attract customers

A store does not bring its own traffic. Plan how people will find you: search engine basics, email list building, social posts, marketplace listings, local networks or paid ads. Set a small test budget and track results. Avoid promising results you cannot support, and follow advertising rules, including honest claims and disclosures of paid endorsements.

Step 10: Launch and monitor

Open the store, watch orders closely for the first weeks, respond to messages quickly, and note recurring questions to add to your FAQ. Review your payment dashboard for holds or disputes. See chargebacks and account holds.

Realistic expectations

Launching is the start. Many stores take months to find a steady stream of customers. Keep fixed costs low in the early months so you can learn without large losses.

When to consult a professional

Talk with an accountant about business structure, estimated taxes and bookkeeping, and with an attorney if you sell regulated products or need custom terms. Your state's Small Business Development Center or the SBA can offer free guidance.

Frequently asked questions

Do I need a business license to sell online?

Often yes at the state or local level, depending on location and product. Check your state and city websites.

Can I launch before my payment account is approved?

You can build the store, but you cannot accept real payments until approved. Start the application early.

How many products do I need to launch?

There is no minimum. A small, well-presented catalog is better than many poor listings.

Do I need a lawyer to write policies?

Not always, but have a professional review terms if you sell regulated or high-value items.

Sources

• U.S. Small Business Administration — starting a business and local counseling
• Internal Revenue Service — EIN and federal tax information
• Federal Trade Commission — online selling rules, shipping timelines, advertising
• Streamlined Sales Tax — multistate sales tax information