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Ecommerce

E-commerce, short for electronic commerce, is the buying and selling of goods or services over the internet. It covers everything from online shops and marketplaces to digital downloads and subscription services. For a business it adds a sales channel that works around the clock and reaches customers anywhere.

From the Money Master HQ dictionary, founded by Shihan Sheriff (FCMA, VP of Finance at Nomod, CFO at Esanjo Ventures). How these definitions are written.

What it means

E-commerce comes in several forms. Business-to-consumer (B2C) is the familiar online shop selling to the public, while business-to-business (B2B) covers companies selling to each other, often at larger values.

Consumer-to-consumer (C2C) happens on marketplaces where individuals sell to one another, and direct-to-consumer (D2C) describes brands that skip retailers and sell straight to buyers. The finance side of e-commerce is different from a traditional shop.

Revenue arrives through payment processors that deduct fees, usually a percentage plus a fixed amount per transaction. Returns, refunds and chargebacks (when a customer disputes a payment with their card provider) must be tracked carefully, because they reduce income and can produce penalties.

Key measures help managers understand performance. The conversion rate shows what share of visitors place an order, average order value shows how much each order brings in, and customer acquisition cost shows how much was spent on advertising and marketing to win each customer.

Together they reveal whether growth is profitable or simply expensive. E-commerce also raises tax and operational questions.

Sales tax and value added tax rules can vary according to where the customer lives, and shipping, packaging and warehousing costs can be large. Inventory must be managed so that popular items do not sell out and slow-moving stock does not tie up cash.

Unlike a shop on a busy street, an online store depends on digital marketing, site speed and trust. Customers expect clear prices, easy returns and secure payment.

Businesses that treat these as finance matters, tracking the cost and return of each, tend to make better decisions about where to invest. Cash flow deserves particular attention in online selling.

Many e-commerce businesses pay suppliers weeks before they collect money from customers, and payment processors sometimes hold back a portion of takings as a reserve. Forecasting these timing gaps helps a founder avoid running out of cash during a busy season.

In practice

Real-world examples.

1

Example

A family-owned coffee roaster starts selling subscriptions through its own website. Customers pay $18 a month for a bag delivered to their door, and the roaster uses the predictable revenue to plan purchases of green beans. Because customers pay in advance each month, the business enjoys steadier cash flow than a shop relying on walk-in trade.

2

Example

A software company sells accounting tools to small firms through an online checkout. The product is delivered as a download, so there are no shipping costs and the gross margin is very high.

3

Example

A craftsperson sells handmade ceramics through an online marketplace. The marketplace charges 10% of each sale, so on a $60 bowl she receives $54 before payment processing fees. She also pays for packaging and postage, so she checks the profit on each product before listing it.

Formula

Calculation

Online revenue = Visitors x Conversion rate x Average order value Worked example: an online shop receives 40,000 visitors a month. The conversion rate is 3%, and the average order value is $50. Orders = 40,000 x 3% = 1,200 Revenue = 1,200 x $50 = $60,000 If the owner raises the conversion rate to 3.5% through a better checkout page, orders become 40,000 x 3.5% = 1,400 and revenue rises to 1,400 x $50 = $70,000, an increase of $10,000 a month with no extra traffic.

Case study

Seen in the real world.

Willow & Pine Outdoors is a fictional camping equipment company that began selling online in addition to its two physical shops. In the first year, the website brought in $400,000 of sales, but the owner was disappointed to find that the profit was small.

A review showed that advertising cost $120,000, payment fees took $12,000 and free shipping and returns added $60,000. After the cost of the goods themselves, the channel barely broke even. The owner raised the free-shipping threshold, introduced a modest returns fee and focused advertising on its best-selling tents.

This illustrative case demonstrates that e-commerce sales are not automatically profitable. By tracking acquisition cost and returns for each product, Willow & Pine turned the channel into a steady contributor to profit within a year. The owner now reviews the numbers monthly instead of once a year.

Watch out

Common mistakes.

  • Counting sales without allowing for returns, payment fees, shipping and advertising, which can make an unprofitable channel look healthy.
  • Spending heavily on traffic before fixing the checkout, so many visitors arrive but few buy.
  • Ignoring tax rules in the places where customers live, which can create unexpected liabilities.

Questions

People also ask.

What is the difference between e-commerce and e-business?

E-commerce is the buying and selling itself, while e-business covers all internet-enabled activities, including supply chain, customer service and internal systems.

What is a good conversion rate?

It varies widely by industry and product, and many shops find that a few per cent of visitors buying is typical, so the best comparison is with your own past results.

Do I need my own website to sell online?

No, you can use a marketplace, but your own site gives more control over branding, customer data and fees.

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Last updated · October 8, 2026
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Disclaimer

The information provided in this finance dictionary is for educational and informational purposes only. It should not be construed as financial, investment, legal, or tax advice. Always consult with a qualified professional before making any financial decisions. Money Master HQ makes no representations or warranties about the accuracy, completeness, or suitability of this information. Use of this content is at your own risk.