In short: To start an ecommerce business, choose a product and audience, decide who holds the stock, pick a marketplace or your own store, and calculate your margin per order before you buy anything. Register the business and sort out tax. Begin with a small test order, then reinvest in whatever brings repeat customers at a sustainable cost.
Online retail keeps growing, which helps but doesn’t guarantee anything for a newcomer. The US Census Bureau estimated e-commerce sales of $340.2 billion in the second quarter of 2026, up 12.2% from a year earlier, at 17.1% of total retail sales. That leaves plenty of room. It also shows that Amazon, Walmart and thousands of established sellers are fighting hard for the same shoppers.
Choose how you will source the product
This decision shapes your costs, your risk and how much of your own time the business uses.
| Model | How it works | Upfront cost | Margin potential | Main risk |
|---|---|---|---|---|
| Dropshipping | Supplier ships each order | Low | Low to medium | Quality and delivery are out of your hands |
| Print on demand | Printer makes and ships to order | Low | Low to medium | High unit cost |
| Wholesale | Buy branded goods in bulk to resell | Medium | Low to medium | Price competition |
| Private label | Manufacturer makes goods under your brand | High | Medium to high | Unsold stock and quality issues |
| Handmade | You make it yourself | Low to medium | Medium | Your time limits your scale |
Newcomers with limited money often start with dropshipping or print on demand, then move their best sellers to held stock. You gain better margins and control by holding inventory, but cash gets locked up in boxes, and that is the classic reason small retailers run into trouble. If you do buy stock, start with the smallest order your supplier will accept.
Find a product with a reason to exist
Ask why someone would buy from you and not from the first result on Amazon. Credible answers include:
- You serve a specific group better, such as left-handed golfers or people with a particular allergy
- You offer a design, formula or bundle that others don’t
- You provide expertise and support along with the product
- Your community or content brings customers who trust your choices
Check demand before committing, using keyword tools, marketplace reviews and direct conversations. Reviews of competitors are especially useful, since one- and three-star complaints show what buyers wish existed. Our guide to validating a business idea sets out cheap tests. Also look out for products with heavy regulation, such as children’s items, food and cosmetics, as they bring safety and labeling duties.
Decide between a marketplace and your own store
You can sell on someone else’s platform, on your own site or both.
Marketplaces give you instant access to buyers, and their checkout is already trusted. In exchange, you accept fees, strict rules and competitors a click away. The customer relationship belongs mostly to the platform too.
Your own store gives you control over branding, pricing and customer data, and fees are generally lower. NerdWallet lists Shopify’s Basic plan at $39 a month, or $29 billed annually, with online card rates of 2.9% plus 30 cents, and there are other platforms at various prices. But nobody arrives by default, so you have to pay for traffic or earn it through search, social media, email and partnerships.
A common sequence is to validate on a marketplace, then build your own store once you know what sells.
Calculate the margin per order
Know this number before you order stock or spend on advertising. The following example uses assumed figures:
| Line | Per order |
|---|---|
| Revenue, including shipping paid by customer | $60.00 |
| Cost of goods | -$20.00 |
| Packaging and outbound shipping | -$8.00 |
| Payment processing (2.9% + $0.30) | -$2.04 |
| Allowance for returns (assumed 8% of revenue) | -$4.80 |
| Contribution before marketing | $25.16 |
That $25.16 has to pay for advertising, fixed costs and your time. If it costs $30 in ads to win a new customer, you lose money on the first order, and only repeat sales can save you. Products that are bought again, such as consumables, can support a higher acquisition cost, while a one-time purchase can’t. Try changing the price, the average order size and the cost of goods to see which matters most. Small changes in price often have a larger effect than expected.
Handle the legal and tax basics
Requirements vary by location, so treat this as a checklist to confirm with an accountant or lawyer:
- Business structure. Decide between a sole proprietorship, LLC or local equivalent. The SBA’s guidance is a good starting point in the US.
- Sales tax and VAT. Rules depend on where you make sales and how much you sell. In the US, states can require collection once you pass thresholds in that state.
- Consumer protection. The FTC’s rule on online orders requires a reasonable basis for shipping promises, and prompt notice and refund options when you can’t meet them.
- Income tax. Plan for tax on profit from the first year, and keep records of every cost.
- Policies. Publish clear returns, shipping and privacy policies.
Fix what stops people buying
A lot of traffic never turns into sales. Baymard’s research on why US shoppers abandon checkout, as cited by ReadyCloud, is a helpful guide:
| Reason given | Share of shoppers |
|---|---|
| Just browsing or not ready to buy | 43% |
| Extra costs too high (shipping, tax, fees) | 39% |
| Delivery too slow | 21% |
| Didn’t trust the site with card details | 19% |
| Required account creation | 19% |
| Checkout too long or complicated | 18% |
| Unsatisfactory returns policy | 15% |
Many of these are cheap to fix. Show total cost early, let people check out as guests, reduce form fields, use known payment methods, state delivery dates honestly and make returns clear. Real photos and specific product details also help, since shoppers can’t touch the goods.
Grow by keeping customers
Paid ads can start the business, but they rarely make it durable on their own, because costs can rise at any time. Build channels you control:
- Email. Collect addresses from the start. Welcome messages, abandoned cart reminders and reorder prompts are usually among the most profitable marketing a small store can run. Our article on monetizing a newsletter covers related ideas.
- Search. Useful product and buying guides can bring traffic for years, though results take months.
- Service. Quick replies and fair refunds turn into reviews and repeat buying.
Review your numbers monthly: contribution per order, cost to win a customer, repeat rate, returns and cash in the bank. Profit and cash aren’t the same in a stock business, so keep an eye on both. Our main guide on how to start an online business compares this path with models that need less capital.
Frequently asked questions
How much does it cost to start an ecommerce business?
It ranges from a few hundred dollars for print on demand with organic marketing to tens of thousands for a private-label brand with stock and photography. The main variables are inventory and advertising. Decide what you can afford to lose, then pick the model that fits, instead of choosing a model and borrowing to fund it.
Do I need a business license to sell online?
It depends on your location and product. Many places require some form of registration, and sales tax permits are common in the US. Check your city, county and state or national requirements, because rules vary a lot. Regulated goods such as food or cosmetics may need additional approvals.
Is it too late to start an online store?
Competition is much tougher than a decade ago, and acquiring customers tends to cost more. Yet online sales are still rising, and specific niches are often poorly served. Starting a general store with commodity products is a hard road. A focused store built around a real audience has a better chance.
