Important note: This guide is for general information for 2026; screens, menu names, documents and timelines may vary by province, tax office and line of activity. Before setting up, consult a certified public accountant and confirm the current steps with the tax office you will be registered to. This article does not replace personal accounting advice.
You have sat down at your computer, your line of activity is clear in your mind, and you want to start your sole proprietorship today; your question is simple: can I get this done through e-Government (e-Devlet) without ever visiting the tax office? This guide focuses exactly on that channel: how setting up a sole proprietorship online works, who can do it, what to have ready before you sit down, what the step flow looks like, and what to watch for at the one point where the online setup meets the real world, the address decision. We do not repeat the general process, the document list or the choice of accountant here; you will find all of that in our how to start a sole proprietorship guide. We deliberately give no Turkish Lira figures in this article, since the cost of each item is a separate question best answered by your accountant. The guide was prepared with the experience of a team that has accompanied the setup and address process of more than 500 businesses at Esenler Tekstilkent Koza Plaza since 2008.
Can You Set Up a Sole Proprietorship Online via e-Government? Short Answer
Yes, you can set up a sole proprietorship without visiting the tax office, through e-Government (e-Devlet). In 2026, setting up a sole proprietorship online begins with a business-start notification, that is, a request for tax liability, filed through the Digital Tax Office (formerly the Interactive Tax Office). This service is provided by the Revenue Administration (Gelir Idaresi Baskanligi); you log in with your e-Government password, a mobile signature, an electronic signature, a Turkish ID card or internet banking. The notification itself is entirely online and requires no physical application form. However, the whole process does not end at the screen: the notarized signature declaration is still obtained at a notary, and the business address you report is checked on site during the tax office inspection. So setting up a sole proprietorship online makes the notification step digital; the notary and inspection steps remain in person. If the documents are complete and the address is suitable, the process is usually finished within one to three business days.
Who Can Set Up a Sole Proprietorship Online?
Any natural person of legal age with a verified identity and a valid login can start a sole proprietorship online. In practice you need to meet three conditions together: being at least 18 and having legal capacity, having an active e-Government login (an e-Government password, mobile signature or similar authentication), and having decided on a valid business address to report to the tax office. The system automatically pulls the information tied to your Turkish ID number; that is why keeping your civil-registry, contact and address details current speeds the process up.
With the setup you become an income-tax payer and enter the SGK 4/B (Bag-Kur) scheme; we cover who takes on this obligation in detail in our tax registration guide. Because foreign nationals need additional conditions and permits, the process may not be completed entirely on your own through e-Government in that case; and if your line of activity requires a license or chamber registration, your accountant directs you to the right channel.
Prerequisites: e-Government Password, e-Signature and Verified Details
Before you start the online setup, what you need is really just a few decisions and one authentication method. Before you sit down at the screen, clarify the following:
- Authentication method: An e-Government password is enough for most people. Alternatively, you can log in with a mobile signature, an electronic signature, a Turkish ID card or internet banking.
- Line of activity and activity (NACE) code: The code matching your work determines taxation and any permit requirements; choosing it correctly from the start is the key to a smooth first year.
- Business address decision: The address you enter in the notification is checked in the inspection; this is the most critical decision of the setup and we cover it in a separate section below.
- Current contact and civil-registry details: Your phone and e-mail must be current; the inspection date and notices arrive through these channels.
- Notarized signature declaration: Even though the notification is online, the signature declaration is drawn up at a notary; if you work with an accountant, a power of attorney is also issued at the same notary.
Is an e-signature required? No, an electronic signature is not mandatory for the setup of a sole proprietorship; you can file the business-start notification with your e-Government password. An e-signature becomes necessary when electronic document obligations such as e-invoice, e-archive and e-ledger begin. Since the full document list submitted to the tax office varies by province and line of activity, confirm your own list from our how to start a sole proprietorship guide and your accountant.
Setting Up a Sole Proprietorship Online: Step by Step (2026)
The flow for setting up a sole proprietorship online runs, unlike capital companies, not through MERSIS and the Trade Registry but directly through the Digital Tax Office. The steps below cover the whole process from decision to the opening of the tax liability; because the screen layout and menu names may change, we describe the flow by the logic of each step.
1. Determine the line of activity, the NACE code and the business address Clarify what work you will do, the matching activity code and the business address you will report. The address is the basis for your tax certificate, all official correspondence and the inspection; that is why it is a decision to make before you sit down at the screen.
2. Obtain the signature declaration from a notary Even though the notification is online, the signature declaration is drawn up at a notary. If an accountant will carry out the setup, a power of attorney authorizing them is also issued at the same notary. This is the one mandatory step that stays off-screen.
3. Log in to the Digital Tax Office and complete the business-start notification You log in to the Digital Tax Office with your e-Government password (or a mobile signature, e-signature, Turkish ID card or internet banking). You go to the business-start notification / tax-liability section, enter the requested information in full, answer the questions about your activity and submit the request. By law, this notification must be filed within 10 days at the latest from the date business begins.
4. Pass the e-inspection process After the notification, the tax office starts the e-inspection process; the inspection officer visits the address you reported and checks that the business is genuinely active, reachable and suitable for the activity. The inspection date is usually notified within a few days by SMS or e-mail. You can find what the inspection looks for in detail in our tax office inspection guide.
5. The tax liability opens and the tax certificate is issued When the inspection concludes positively, your tax liability is opened, your tax identification number is assigned, and your tax certificate appears in your Digital Tax Office account. Setting up correct tax registration from day one matters, which our tax registration guide explains.
6. SGK 4/B registration is completed Following your tax office registration, SGK automatically registers you as insured under the 4/B (Bag-Kur) scheme. If ledger certification, e-invoice or e-archive is needed, your accountant completes these steps, and you officially begin operating.
The whole process, if the documents are complete and the address is suitable, is usually finished within one to three business days.
Practical note: In an online setup, the business address you report is checked directly in the inspection; an address that is unreachable or looks unsuitable for activity can delay by days a process you completed in minutes at the screen. The virtual office service that Micro Office has run for 18 years at its real office address in Tekstilkent Koza Plaza provides a legal business address and inspection support.
e-Government (Online) or the Tax Office in Person?
The two most common ways to set up a sole proprietorship are filing the business-start notification online through e-Government or going to the tax office in person with your documents. The online route is the fastest for an entrepreneur who is comfortable with digital procedures and has a simple activity; with your e-Government authentication you log in to the Digital Tax Office, fill in the notification yourself and avoid appointment and waiting times. Applying in person suits those who prefer to proceed with an officer's guidance; you hand over the documents, but the appointment and queue can lengthen the process. On both routes the notary signature declaration and the physical inspection remain unchanged; the difference is only in where the notification is filed. The table below compares the two routes.
| Criterion | e-Government (online) | Tax office (in person) |
|---|---|---|
| Where you apply | Digital Tax Office, online | Tax office, face to face |
| Login / authentication | e-Government password, mobile signature, e-signature | Physical ID and documents |
| Speed | Fast, notification in minutes | Depends on appointment and queue |
| Activity code selection | Yours, with error risk | Partial officer guidance |
| Notary signature declaration | Required (off-screen step) | Required |
| Inspection | Same e-inspection process | Same e-inspection process |
| Who it suits | Digitally confident, simple activity | Those wanting in-person handling |
You can run either route by granting a power of attorney to an accountant; in that case the notification, the activity code selection and the inspection follow-up proceed in expert hands. Setting up the activity code and ledger type correctly from day one makes accountant support worth a small fee for most founders. Whichever route you choose, the most decisive decision is the business address you will report.
The Address Stage: The Turning Point of the Online Setup
The address is the exact intersection between the online part of setting up a sole proprietorship and the real world. The business address you enter on the notification screen is not just a form field; the tax office inspection comes to this address on site, this address appears on your tax certificate, and all official notices arrive here. Even if you complete the online setup in a few minutes, if the address you entered is unreachable or looks unsuitable for activity, the opening of the tax liability is delayed. Many entrepreneurs report a home address as the fastest solution; but a home address can cause problems later through the residence-versus-workplace distinction, building management restrictions, notices arriving at home and the address showing on your brand. The most economical and professional alternative is a virtual office: it provides a legal business address, mail and notice handling and inspection support at a cost far below physical office rent, with the same legal validity.
We examined the tax, withholding and privacy side of a home address in detail in our can you use your home as a company address guide; for a general comparison of all address options, see our guide to a company address in Istanbul. The logic of an online setup is to let you make the decision at the screen and remotely; a virtual office fits exactly this logic, because you gain a legal and reachable business address without renting a physical office. At Micro Office, we have given sole proprietorships a legal business address and inspection support for 18 years at our real Tekstilkent Koza Plaza office; you can review our virtual office service page.
After the Setup: First Obligations
Once your sole proprietorship is set up through e-Government, your regular obligations begin: periodic VAT and provisional tax returns, the annual income tax return, keeping ledgers and SGK 4/B (Bag-Kur) premiums. Your tax certificate appears in your Digital Tax Office account after the return period and is downloaded free of charge. Who must register and for which taxes matters from the start, and our tax registration guide covers exactly that. The item-by-item cost of these regular obligations and the first-year total are best assessed with your accountant. If you are a young entrepreneur, you may benefit from the income tax earnings exemption when you meet certain conditions; assess the current conditions of this advantage with your accountant.
Conclusion: Completing the e-Government Setup Correctly
Setting up a sole proprietorship online begins, with the right preparation, with a notification that takes minutes at the screen and is usually completed in a few business days. For a healthy online setup:
- Determine your line of activity and activity code correctly before you sit down at the screen.
- File the business-start notification through the Digital Tax Office on time (within 10 days at the latest).
- Choose your business address carefully; it is where the online setup meets the real world and determines the inspection.
- With accountant support, set up your tax and SGK obligations correctly from day one.
To set up your sole proprietorship with a legal, reliable and professional business address, fill in our application form or get in touch: our contact page, phone or WhatsApp: 0543 347 27 99. For a legal business address and inspection support, review our virtual office service page.
Frequently Asked Questions
Can a sole proprietorship be set up entirely online via e-Government?
The business-start notification (tax liability) is filed entirely online at the Digital Tax Office through e-Government and does not require you to visit the tax office. However, the whole process does not end at the screen: the notarized signature declaration is obtained at a notary and the business address you report is checked on site during the tax office inspection. So the notification step is online, while the notary and inspection steps are completed in person.
Is an e-signature required to set up a sole proprietorship via e-Government?
No, an electronic signature is not mandatory for the setup of a sole proprietorship. You can file the business-start notification with your e-Government password; alternatively, you can log in with a mobile signature, an electronic signature, a Turkish ID card or internet banking. An e-signature becomes necessary when electronic document obligations such as e-invoice, e-archive and e-ledger begin.
How long does setting up a sole proprietorship online take?
If the documents are complete and the business address is suitable, the online setup is usually finished within one to three business days, inspection included. After the business-start notification, the inspection date is usually notified within a few days. By law, the business-start notification must be filed within 10 days at the latest from the date business begins.
Which address do you report for a sole proprietorship set up via e-Government, and can I use a virtual office?
You can report a home address, a rented workplace or a virtual office address in the notification. A virtual office fits the remote, at-the-screen logic of an online setup: it provides a legal and reachable business address without renting a physical office. The only condition is that the provider has a genuine physical premises at that address and is reachable by the inspection officer. Micro Office's real office address at Tekstilkent Koza Plaza meets this condition.
Is it the Interactive Tax Office or the Digital Tax Office?
The Interactive Tax Office has been updated under the name Digital Tax Office; the business-start notification runs today through the Digital Tax Office. You still log in with your e-Government password and the other authentication methods. Because the screen layout and menu names may change, it is wise to confirm the flow with the tax office you will be registered to or with your accountant.
Should I set it up myself via e-Government or through an accountant?
Both are possible. If you are comfortable with digital procedures and your activity is simple, you can file the business-start notification yourself through e-Government. However, if setting up the activity code, ledger type and tax options correctly for the first year matters, granting a power of attorney to an accountant, as most entrepreneurs do, is the safer and more time-saving route.
