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Company for Online Marketplace Sales

A comprehensive guide covering the process, requirements, and strategic steps for those who want to establish a company for selling on online marketplaces.

7 min readPublished: November 14, 2025Updated: September 1, 2026
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In recent years, with the acceleration of digital transformation, online marketplaces have become one of the easiest channels for both individual entrepreneurs and small businesses to enter e-commerce. Major platforms like Trendyol, Hepsiburada, Amazon, Çiçeksepeti, and n11 make sales accessible thanks to their established customer base. However, many entrepreneurs face an important question at this point: Is it necessary to establish a company for online marketplace sales? This question is particularly frequently raised among newcomers.

The basic rule is this: In Turkey, to conduct regular sales on marketplaces and issue invoices, a company is required. Individual one-time sales are possible; however, if you want to open a marketplace store, establishing a company is mandatory. The reason is that the tax system requires commercial activities to be registered. Therefore, for entrepreneurs wondering "Will I conduct small sales anyway, do I still need a company?", the answer is clear: Yes, because a tax certificate is required to open a seller panel.

However, at this point, simply establishing a company is not enough on its own. It is necessary to choose the right company type for online marketplace sales, correctly determine the field of activity, understand tax obligations, and plan cash flow properly. This article provides a comprehensive perspective by addressing this entire process, particularly the details that new entrepreneurs often overlook when making decisions.

Which Company Type Is Suitable for Online Marketplace Sales?

To conduct sales on online marketplaces, there are three basic company types available: sole proprietorship, limited liability company, and joint stock company. One of the first questions that newcomers often ask is: "Which one is more advantageous?" The answer always varies depending on personal goals, financial capacity, and growth plans.

Sole Proprietorship and Its Advantages

For many entrepreneurs, a sole proprietorship is the ideal option when starting to sell on online marketplaces. It is easy to establish, low-cost, and can be opened within 1 day. Closure is also relatively quick. For this reason, it is particularly preferred by those who say "I want to test sales."

One of the frequently asked questions is: "If I open a sole proprietorship, will marketplaces trust me?" The company type is not important to marketplaces; what is important is that the documents are complete. Therefore, a sole proprietorship does not create any disadvantage in this regard.

The tax system is based on income tax and increases gradually according to income. This can create a tax advantage during low-income startup periods.

Is It Necessary to Choose a Limited Liability Company?

Another frequently wondered question is: "Is a limited liability company necessary for online marketplace sales?" No, it is not necessary. However, those planning to conduct large-volume sales in the medium and long term may find a limited liability company to provide a more professional structure. Although the establishment cost is higher and closure is more difficult, since the corporate tax rate is fixed, it can provide a tax advantage beyond a certain turnover level.

One of the biggest advantages of limited liability companies is that the partnership structure is more professional. If there are future goals such as growth, investment raising, or establishing a franchise model, a limited liability company is the better choice.

When Is a Joint Stock Company Reasonable?

Another topic that many new entrepreneurs wonder about is: "Do I need to open a joint stock company?" A joint stock company is not a requirement for marketplace sales. It is typically preferred in large-capital enterprises or those planning to raise investment or simplify share transfer processes. For e-commerce entrepreneurs at the startup stage, it usually creates unnecessary costs.

What Are Company Requirements According to Marketplaces?

Each marketplace establishes its own seller registration processes and document requirements. However, there is a common requirement: to be a tax payer. Beyond this, there may be some additional checks on different marketplaces.

A frequently asked question by entrepreneurs is: "Do I need a separate company for each marketplace?" No, you can open a store on all marketplaces with a single company.

The main documents that platforms require:

  • Tax certificate
  • Signature declaration
  • Trade registry gazette (depending on company type)
  • IBAN and bank information
  • Authorized person's ID photocopy
  • NACE code containing the field of activity, if required

Once these documents are ready, the store opening process moves forward quite quickly.

How to Select the Correct Field of Activity for Online Marketplace Sales?

Determining the field of activity when establishing a company creates the legal scope of commercial activities. Many people wonder "Should I add a separate field of activity for each product?" In most cases, if you will conduct online commerce, selecting a broad wholesale or retail trade field of activity is sufficient. However, additional NACE codes may be required depending on product category.

Basic NACE Code for E-Commerce

Generally, the most common code used for online sales is:

47.91.14 – Retail trade conducted via post or internet

This code is sufficient to open a store on marketplaces.

However, some products may require additional permissions and additional fields of activity. For example:

  • Dietary supplements
  • Medical products
  • Cosmetic products
  • Toy categories
  • Baby products

In these cases, both the marketplace and public institutions may request some permits. For this reason, legal requirements must be thoroughly reviewed when building your product range.

How to Plan the Cost of Opening a Company for Marketplace Sales?

Many entrepreneurs either exaggerate or incorrectly estimate the cost of establishing a company. However, the costs of opening a company for online marketplaces are usually at an accessible level. Here, the most important question that is wondered is: "What capital can I start with?"

The startup cost for a sole proprietorship is low. The most important expense items are accounting, tax obligations, and marketplace commissions. For establishing a limited liability company, capital must be shown; however, this capital does not need to be physically held in a bank.

Elements that should not be overlooked in expense planning:

  • Accounting fee
  • Social security premium (mandatory for sole proprietorships)
  • Marketplace commissions
  • Shipping costs
  • Product costs
  • Invoice software
  • Advertising budget

Some entrepreneurs expect to make a profit in the first month; however, in marketplace sales, if a model with inventory is chosen, cash flow usually balances after a few months.

How Do Tax Processes Work When Establishing a Company for Online Marketplace Sales?

When tax processes in e-commerce proceed regularly, they are quite straightforward. However, the questions that confuse newcomers the most are:

Will I pay separate tax on each sale?

Does the marketplace issue an invoice on my behalf?

Marketplaces do not issue invoices on your behalf. All sales invoices belong to the company. For this reason, e-invoice or e-archive is mandatory.

Income tax (for sole proprietorship) or corporate tax (for limited liability company) is calculated periodically, and payment is not made for each sale. Sellers are also subject to VAT. Therefore, it is important to know the VAT rate of the product you are selling.

Some small entrepreneurs ask "Can I sell without VAT?" This is not possible; invoices are issued according to whatever the VAT rate of the product is.

Additionally, the VAT on marketplace commissions can be processed as an expense. For this reason, obtaining accounting support is very important.

Determining the Right Product and Business Model for Online Marketplace Sales

Establishing a company is just the beginning; the truly important part is reaching the right audience with the right product. Since competition on marketplaces is intense, product selection determines the fate of the entire process.

Many people raise these questions:

Can every product be sold on a marketplace?

If I enter best-selling products, can I overcome the competition?

What is critical here is not to focus on high-volume products, but on high-margin and low-competition products. Trend products sell quickly; however, price-cutting wars usually reduce profit margins.

The choice of business model is equally important:

  • Inventory-free sales (dropshipping)
  • Testing model with minimal inventory
  • Branded product sales
  • Custom-made product sales
  • Imported products

Each model has its advantages and disadvantages. For newcomers, a testing model with minimal inventory provides low-risk and controlled growth.

The Strategic Role of the Company in Marketplace Store Management

When conducting online marketplace sales, the company is not just a legal requirement, but also the center of operations. All processes including financial management, inventory control, shipping procedures, supply chain, advertising expenses, and customer satisfaction depend on the company structure.

For this reason, many entrepreneurs ask:

Can I grow my marketplace sales without expanding my company structure?

Yes, it is possible; however, after a certain level, you need to transition to professional processes. Especially:

  • When monthly turnover increases
  • When a new product range is added
  • When advertising budget grows
  • When storage or personnel needs arise

The company structure may also need to be updated. This may include changing the company type, adding an additional activity code, or changing the business name.

Company-Focused Strategic Approaches to Growing Marketplace Sales

Online marketplace sales is not a model that brings great success overnight; it grows through the combination of the right product, correct pricing, and right marketing strategies. Establishing a solid company and ensuring transparent financial processes are the most important steps for healthy growth.

A critical question that many entrepreneurs wonder is:

What should I focus on first to increase my sales?

Generally, the first focus points are:

  • Optimizing product descriptions
  • SEO-friendly titles
  • High-quality images
  • Using in-marketplace advertising
  • Competitive but profitable pricing
  • Fast shipping and customer satisfaction

On the company side, on the other hand:

  • Regular accounting tracking
  • Low-cost high-efficiency formula
  • Inventory management systems
  • Sales-product performance analysis

Each step contributes to the healthy growth of the company.

Long-Term Business Plan for Online Marketplace Sellers

Marketplaces are areas with intense competition but where very rapid growth is possible with the right strategy. What is decisive here is that the company structure is shaped to match sales volume and growth plans.

A common mistake made by many newcomers is viewing the company only as a "requirement". However, the company is a professional foundation that directly affects many areas from marketing strategy to cash flow, from supply processes to competitive strength.

Marketplace operations conducted through a company that is properly established, with the correct field of activity selected, clear costs, and correctly planned tax obligations become much more scalable and sustainable. Every step the entrepreneur takes becomes more controlled, risks are managed more easily, and investment for growth is directed to the right areas.

In conclusion, establishing a company for online marketplace sales is not just a legal requirement, but also a strategic step that forms the foundation of the entire business model. When a solid beginning is made, thanks to the wide customer base and sales potential offered by marketplaces, the opportunities provided by e-commerce become much more visible and implementable. This approach provides a strong roadmap for both new entrepreneurs and businesses looking to grow.

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