Starting an Ecommerce Business: Essential Steps for Beginners

Starting an ecommerce business comes down to eight steps in order: validate a product people already search for and buy, register the business, choose a selling platform, set up payments, plan shipping, register for sales tax or VAT where the rules require it, publish your legal pages, and market the launch. The market is large and still growing. The US Census Bureau estimates US retail ecommerce sales at $340.2 billion in the second quarter of 2026, 17.1% of all retail sales and 12.2% higher than a year earlier. Most of the steps below cost little or nothing; the expensive mistakes come from skipping validation or ignoring tax.

Key facts

• US ecommerce sales were $340.2 billion in Q2 2026, 17.1% of total retail (US Census Bureau).
• An EIN from the IRS is free and issued immediately online if approved (IRS).
• Online card payments on Square cost 2.9% + 30¢ per transaction (Square).
• Texas and California require remote sellers to collect tax once their sales into the state pass $500,000 (Texas Comptroller, CDTFA).
• UK businesses must register for VAT once taxable turnover passes £90,000 in 12 months (GOV.UK).
• Shoppers who abandon a checkout most often cite extra costs: 40% in Baymard's survey (Baymard Institute).

How do you validate a niche and a product?

Validation means finding evidence that strangers will pay for the product before you buy inventory. The SBA frames it in two parts: market research helps you find customers, and competitive analysis helps you make the business different. For a small store, that translates into four checks:

1. Demand. Look for steady search interest and existing sellers. A niche with no competitors is often a niche with no buyers.
2. Margin. Price the product, then subtract the cost of goods, packaging, shipping, payment fees and an advertising allowance per order. If less than a third of the price remains, the product will struggle once you pay for traffic.
3. Shipping profile. Small, light, unbreakable items are cheaper to ship and return. Heavy or fragile items can work, but the shipping cost has to be built into the price.
4. A small test. Sell 10 to 30 units through a marketplace, a print on demand service, or a preorder page before ordering stock in bulk. Real orders beat survey answers.

Write down who the buyer is, what they currently buy instead, and why they would switch. That one paragraph will guide your product page copy, your ads and your email welcome series later.

Do you need to register an ecommerce business?

In the US, you can start as a sole proprietor without filing anything. The SBA notes that you are automatically treated as a sole proprietorship if you do business activities but do not register as another structure, and calls it a reasonable choice for owners who want to test an idea first. The trade off is personal liability. An LLC, by contrast, protects personal assets such as your house and savings in most instances, though members still pay self-employment tax.

Three registrations come up for most new stores:

• Business name. If you trade under a name other than your own, file a DBA. The SBA notes that a DBA plus an EIN lets you open a business bank account.
• EIN. The IRS issues an Employer Identification Number online for free. Payment processors and marketplaces ask for it, and it keeps your Social Security number off forms.
• State seller's permit. Your home state usually requires a sales tax permit before you sell taxable goods to its residents.

In the UK, GOV.UK lets you start trading as a sole trader straight away, but you must register for Self Assessment once you earn more than £1,000 in a tax year. Keep business money in a separate account from day one; it makes bookkeeping and tax returns far simpler.

Which ecommerce platform should a beginner choose?

Pick the platform by how you plan to sell, not by feature lists. A hosted platform (Shopify, BigCommerce, Square Online, Big Cartel) handles hosting, security and checkout for a monthly fee. WooCommerce is free software but needs paid hosting and more maintenance. Shopify reports that its merchants have collectively made $1.1 trillion in sales, so apps, themes and tutorials are plentiful.

Platform	Entry price (USD)	Notes	Source
Square Online	$0 per month	Paid plans at $49 and $149 per location	Square
WooCommerce	$0 platform fee	You pay for hosting separately	WooCommerce
Big Cartel	$15 per month after a 7 day trial	Small catalogs and makers	Big Cartel
BigCommerce Core	$29 per month billed annually	For stores up to $30K in annual sales	BigCommerce
BigCommerce Growth	$79 per month billed annually	For stores scaling toward $100K	BigCommerce

Prices were checked on 2026-11-13. Shopify shows local currency prices depending on where you visit from, so check its pricing page from your own location. Our ecommerce platform rankings compare documented features and published prices in more detail.

How do you accept payments online?

Most hosted platforms include a built-in processor, and card rates for small stores cluster around the same level. Square charges 2.9% + 30¢ for online card payments, and WooCommerce lists about 2.50% to 2.90% + 30¢ per transaction with WooPayments. On a $40 order, 2.9% + 30¢ is $1.46, so build fees into the price rather than hoping to absorb them.

Offer the payment methods your buyers expect: cards, at least one digital wallet, and PayPal if your audience uses it. Each extra option costs nothing to switch on in most platforms, while a missing option can lose the sale at the last step. Our payment gateway comparison lists the published rates side by side.

How should you handle shipping?

Shipping is where many new stores lose money and customers at the same time. In Baymard Institute research, 40% of US shoppers who abandoned a checkout said extra costs such as shipping, tax and fees were too high, and 20% said delivery was too slow. Baymard puts the average documented cart abandonment rate at 70.22%.

Practical rules:

• Show shipping costs early, on the product page or cart, not for the first time at checkout.
• Weigh and measure every product with its packaging before you set rates. Carriers price by weight and size.
• Start with one carrier service. In the US, USPS Ground Advantage delivers in 2 to 5 days with tracking included, and online labels get lower commercial rates than the Post Office counter price of $8.40 and up.
• Consider a free shipping threshold set just above your average order value, with the cost folded into product prices.
• Promise only what you can meet. The FTC Mail, Internet or Telephone Order Merchandise Rule requires US sellers to ship within the time they state, or within 30 days if they state no time, and to offer buyers the option to cancel if there is a delay.

Shipping software can buy discounted labels and print them in bulk once volume grows; see our shipping software comparison.

When do you need to collect sales tax or VAT?

In the US, you collect sales tax in states where you have nexus. Physical presence (an office, a warehouse, staff) creates nexus. Since the Supreme Court's Wayfair decision, states can also impose economic nexus on remote sellers based on sales volume. Thresholds differ by state:

• Texas: remote sellers whose Texas revenue exceeds the $500,000 safe harbor must obtain a permit and collect use tax. Sellers who only sell through a marketplace that collects on their behalf do not need a Texas permit, but must keep records for at least four years.
• California: retailers must register once combined sales for delivery into California exceed $500,000 in the current or preceding calendar year.

For most beginners, the practical answer is to register in the home state first, turn on the platform's automatic tax calculation, and review state sales totals every quarter against each state's published threshold.

In the UK, you must register for VAT when taxable turnover for the last 12 months goes over £90,000, or when you expect it to pass £90,000 in the next 30 days. Overseas sellers shipping consignments worth £135 or less directly to customers in Great Britain charge UK VAT at the point of sale. For sales to consumers in other EU countries, a EUR 10,000 threshold applies to distance sales; above it, VAT is due in the buyer's country, and the One Stop Shop lets you register in one EU country to declare and pay it.

What legal pages does an online store need?

Every store should publish these before taking its first order:

• Privacy policy: what data you collect, why, which services receive it (payment, shipping, email, analytics), and how customers can ask for deletion.
• Terms of service: pricing errors, order acceptance, liability limits and governing law.
• Shipping policy: processing time, carriers, delivery estimates and costs, consistent with the FTC shipping rule.
• Refund and returns policy: UK sellers must offer a refund if a customer cancels within 14 days of receiving an item, and the customer then has another 14 days to return it.
• Contact page: a real email address and, where required, a business address.

Platform templates are a starting point, not a finished policy. Edit them so they match how you actually operate.

How do you market a new store at launch?

Start collecting email addresses before launch with a simple waitlist page, then send a welcome series when the store opens. Automated email pays off: in Klaviyo's benchmarks, flows generated nearly 41% of total email revenue from just 5.3% of sends, with click rates of 5.58% against 1.69% for campaigns. Set up three flows first: welcome, abandoned cart and post purchase.

Beyond email, pick one or two channels where the buyer already spends time instead of spreading a small budget thin. A focused launch usually combines product pages written around search terms buyers use, a handful of creator or customer posts showing the product in use, and a small paid test with a fixed daily cap. Track cost per order against the margin you calculated during validation. Our email marketing comparison covers tools with ecommerce flows built in.

Launch checklist

• Product validated with real orders or preorders, and margin calculated after all fees
• Business structure chosen, DBA filed if needed, EIN obtained
• Separate business bank account opened
• Home state seller's permit (or UK Self Assessment registration) in place
• Platform chosen, domain connected, test order placed and refunded
• Payments live with cards, a wallet and any method your buyers expect
• Every product weighed with packaging; shipping rates shown before checkout
• Automatic tax calculation on; quarterly review of state or country sales totals scheduled
• Privacy, terms, shipping, returns and contact pages published
• Waitlist, welcome flow, abandoned cart flow and post purchase flow ready

Frequently asked questions

How much does it cost to start an ecommerce business?

Platform fees can start at $0 on Square Online or $29 a month on BigCommerce Core billed annually, and an EIN is free. The larger costs are inventory, samples, packaging and marketing, so start with a small batch.

Do I need an LLC to sell online?

No. The SBA treats you as a sole proprietor by default, which suits testing an idea. An LLC adds protection for personal assets in most instances, which matters more once you hold inventory or sell products that carry injury risk.

Do I have to charge sales tax in every state?

No. You collect in states where you have physical presence or pass the economic nexus threshold, such as $500,000 in sales into Texas or California. Thresholds differ, so check each state's revenue department.

When does a UK online seller need to register for VAT?

When taxable turnover for the past 12 months goes over £90,000, or is expected to pass £90,000 in the next 30 days, according to GOV.UK. Registering voluntarily below the threshold is allowed.

How long can I take to ship an order in the US?

As long as you state clearly. If you state no time, the FTC rule sets 30 days from receiving the order, and delays require offering the buyer the option to cancel.

What payment fees should I expect?

Around 2.9% + 30¢ per online card payment at Square, and a similar range with WooPayments. Check your platform's rate card, because some charge an extra fee when you use an outside processor.