Selecting the appropriate legal form for a business is crucial for tax management, growth, and the protection of the entrepreneur. As of 2026, significant differences remain in Greece between a sole proprietorship and a Private Company (IKE) regarding taxation, social security contributions, and the management of clientele and invoicing.

In this article, we will analyze the reasons for choosing each business structure and how to manage the business regarding taxation and costs; we will also present comparison tables and provide a detailed FAQ addressing all the questions entrepreneurs may have.

Why choose a Sole Proprietorship or an IKE?

1. Sole Proprietorship – Simplicity and low cost

• Ideal for small businesses and freelancers
• Low setup and maintenance costs
• Simple invoicing and tax management process

2. IKE – Limited liability and flexibility

• It limits the entrepreneur’s personal liability.
• Easier access to investment capital
• Ideal for businesses anticipating growth and partnerships.

How to manage the business’s tax affairs

Step 1: Understanding 2026 tax rates

Business Structure	Income tax	Business activity tax	EFKA contributions
Sole Proprietorship	9% – 44% (graduated)	€650 – €1,000 per year	20%–25% on profits (depending on the insurance category)
Private Company (IKE)	24% on net profits	0€	EFKA contributions on profits are not charged to the partner solely in respect of remuneration paid to members or employees.

Note: The percentages may be adjusted by ministerial decisions, but the fundamental differences remain.

Step 2: Pricing and costing

Proper pricing requires knowledge of the production or purchasing costs of products and services.

Basic costing steps:

1. Recording the cost of raw materials or services
2. Calculation of fixed and variable expenses (rent, EFKA, taxes)
3. Adding the desired profit margin

Example of sales price calculation:

Element	Value (€)
Product cost	50
Fixed costs (proportional)	10
20% profit	12
Final selling price	72

Step 3: Digital client list and management

Digitizing the customer base enables:

• Sales tracking by customer
• Automatic invoicing and receipt dispatch
• Targeted offers and email marketing

Modern software solutions, such as ERP or CRM, help link tax management with the digital customer database.

Common mistakes to avoid

1. Inaccurate cost estimation – leads to low profit margins.
2. Late EFKA payment – ​​fines
3. Using Excel instead of a digital client database – loss of data and marketing opportunities
4. Non-compliance with electronic invoicing platforms

Strategic choice of legal form and growth

Choosing between a sole proprietorship and an IKE (Private Company) is not merely an accounting or tax matter, but a strategic decision that shapes the business’s overall trajectory. A sole proprietorship offers flexibility and rapid decision-making—qualities particularly valuable for new professionals or low-risk ventures. In contrast, the IKE represents a more structured corporate form that enhances credibility in the eyes of partners, banks, and investors, while simultaneously safeguarding personal assets. The right choice depends on projected earnings, the level of business risk, and the potential for future expansion or partnerships.

The role of digitalization in the modern enterprise

In the business landscape of 2026, digital organization is no longer an optional choice but a fundamental prerequisite for survival and growth. Utilizing digital customer databases and invoicing systems enables not only compliance with tax obligations but also the optimization of commercial strategy. Through customer data analysis, a business can identify opportunities to boost sales, create targeted campaigns, and enhance customer loyalty. Investing in modern management tools now constitutes a competitive advantage rather than merely an operational cost.

FAQ – Frequently Asked Questions

1. What is the business activity levy and how is it calculated?

The business activity levy is an annual fee imposed on businesses.

• For sole proprietorships, it ranges from €650 to €1,000, depending on the business location.
• In the case of an IKE, this does not apply, since taxation is imposed only on net profits.

Its purpose is to participate in state funding, regardless of profits.

2. What is the difference in taxation between a sole proprietorship and a Private Company (IKE)?

• Sole proprietorship: Net profits are taxed at a progressive rate of 9%–44%, and the business is subject to EFKA contributions and the trade duty.
• IKE: Only net profit is taxed at 24%, with no business activity levy, and EFKA contributions apply only to salaries or remuneration of partners/employees.

The IKE limits personal liability and can be more favorable for investors or partnerships.

3. What is the cost of establishment and maintenance?

Element	Sole Proprietorship	Private Company (IKE)
Constituent expenditure	0-200€	€300–€600 + legal/notary fees
Annual maintenance	Accounting & EFKA	Accounting, EFKA (social security) for employees, 24% tax

4. Do I need an accountant for a sole proprietorship or a Private Company (IKE)?

Yes, for proper bookkeeping, issuing invoices, and tax compliance.

• The IKE requires more complex accounting management due to corporate records and potential investors.
• A sole proprietorship is simpler, but properly managing EFKA contributions and VAT requires expertise.

5. Do I need to have a digital client list?

Today, a digital customer database is essential for:

• Speed ​​in invoicing and sending receipts
• Strategic marketing and loyalty programs
• Sales analysis by customer and product

Using Excel is an initial solution, but a CRM or ERP system enables comprehensive management and integration with electronic invoicing.

6. What is the advantage of the IKE for future growth?

The Private Capital Company (IKE):

• It offers limited liability for the partners.
• It allows for the easy addition of new partners or investors.
• It facilitates partnerships and a potential future conversion into a public limited company (SA).
• It is more reliable for banks and investors compared to a sole proprietorship.

7. How do I correctly calculate the selling price?

• Add to the cost of the product or service:
  • Fixed expenses (rent, bills)
  • Variable costs (raw materials, supplies)
  • Desired profit margin
• Include VAT or other government fees.

Proper costing protects the business from losses and ensures sustainable growth.

8. What changes does 2026 bring to taxation?

• Readjustment of tax rates for sole proprietorships
• Retention of the 24% rate for IKEs
• Mandatory digital invoicing for additional categories of businesses
• Emphasis on electronic client management for tax compliance

Conclusion

The choice between a sole proprietorship and an IKE for 2026 depends on the size, nature of operations, and goals of your business. A sole proprietorship offers simplicity, low costs, and ease of management, making it ideal for small businesses or freelancers. On the other hand, an IKE provides limited liability, facilitates partnerships, and offers greater credibility with investors and banks, making it suitable for businesses with growth potential.

Proper pricing and costing are crucial for viability, while the use of a digital client database and management software enhances efficiency and tax compliance. Ultimately, the choice of legal structure requires strategic planning, taking into account tax burdens, social security contributions, future growth needs, and client management.

A well-structured business, featuring digital customer management and modern costing, secures a competitive advantage, efficiency, and sustainability in the Greek market of 2026.