How to Register a Sole Proprietorship for E-Commerce? (2026)

A sole proprietorship is the simplest and fastest type of business to set up, run by a single individual — it's the first stop for most sellers starting out in e-commerce. Marketplaces like Trendyol, Hepsiburada, and Amazon require a tax certificate and invoicing authority when you open a store; under Turkish tax law, regular, for-profit, ongoing sales count as commercial activity and require registering as a taxpayer — running it without invoices creates legal risk. Occasionally selling your used personal items doesn't fall under this, but buying stock and selling it systematically does. A sole proprietorship covers this obligation in the cheapest, fastest way: there's no capital requirement, setup usually takes 1-3 days, and the bookkeeping burden is much lighter than an LLC's. For a seller just starting out, this is the right first step.

The process is almost entirely digital and doesn't require standing in line at a physical tax office. The application starts on e-Devlet, under Interactive Tax Office > Sole Proprietorship Registration Application; you upload your ID, proof of residence, and business premises documentation (lease agreement or deed). Next, you get a signature declaration issued at a notary — it typically costs 1,050-1,150 TL and is mandatory, since it serves as your signature on invoices and official documents. After you apply, a site inspector checks the business address you declared; whether it's a home address or a virtual office doesn't change the outcome. Once the inspection is approved, the system automatically generates your tax certificate, which you can download from e-Devlet. If your documents are complete, the whole process takes 1-3 days.

• e-Devlet application — Fill out the online form under Interactive Tax Office > Sole Proprietorship Registration Application
• Document upload — Upload a copy of your ID, proof of residence, and a copy of your lease agreement or deed
• Notary signature declaration — Get your signature declaration issued at a notary (averages 1,050-1,150 TL)
• Site inspection — A site inspector verifies the declared business address (including home or virtual office)
• Tax certificate — Once the e-inspection is approved, the system generates your tax certificate automatically, downloadable from e-Devlet

Legally, a sole proprietorship has no minimum capital requirement — so the answer to "how much capital do you need" is zero. What you pay isn't capital, it's the cost of the registration process, which averages 8,000-14,000 TL in 2026. The biggest chunk of that is your accountant's business-opening fee (3,500-5,500 TL), plus the notary signature declaration and the power of attorney fee paid to your bookkeeper. Monthly expenses continue after registration too: bookkeeping fees typically run 1,500-3,000 TL per month, on top of the minimum Bağ-Kur (self-employed social security) premium. If you'd rather not track these line items by hand in a spreadsheet and instead see your income, expenses, and net profit automatically, Ecomiro's Analytics & Reports module builds this breakdown for you order by order.

Figures are 2026 averages and can vary by province and accountant. There's no capital requirement; these amounts are registration processing costs, not capital.

Most e-commerce sellers start out with a sole proprietorship because there's no capital requirement and setup wraps up in 1-3 days; an LLC requires at least 10,000 TL in capital and a longer, costlier procedure (notary, trade registry, public notice). On taxes, a sole proprietorship's income tax bracket rises as earnings grow (from 15% up to 40%), while an LLC pays a flat 25% corporate tax but also owes withholding tax when distributing profits to yourself. The most critical difference is liability: in a sole proprietorship, business debt also puts your personal assets on the line, while in an LLC liability is limited to the capital you've contributed. Rule of thumb: a sole proprietorship is enough for someone working solo with low-to-mid revenue; switching to an LLC makes sense once you take on a partner or revenue grows. Once you start selling on Trendyol, Hepsiburada, and Amazon at the same time, Ecomiro's Multi-Store module automates managing all these stores from a single panel.

Read: Multi-marketplace management guide

Turkey's Income Tax Law offers a substantial incentive to entrepreneurs under 29 who are registering as taxpayers for the first time: for the first 3 tax periods (3 years), up to 230,000 TL of annual earnings is exempt from income tax. The conditions are clear: you must not have turned 29 at the time of application, you must start the business in your own name and run it yourself (a sole proprietorship, not a partnership), and you must never have been registered as a taxpayer before. The exemption isn't applied automatically — you declare the request to the tax office during registration, and it continues for 3 years as long as the conditions are met. For an e-commerce entrepreneur, this means being able to keep a significant portion of earnings tax-free in the early years. You should confirm with your accountant whether you fully meet the conditions; an incorrect declaration can later result in a penalized tax assessment.

A physical storefront or warehouse isn't required for e-commerce; on your application, you can declare your home address (place of residence) or a virtual office service's address as your business address — a site inspector checks this address and generally accepts it as sufficient for e-commerce activity. A virtual office is especially popular with people who live in a different province but want to appear based in a major city, and it costs roughly 300-800 TL per month. Closing down is relatively simple: the cost of closing a sole proprietorship, including the accountant's closing fee, generally ranges from 2,000-4,000 TL, plus any outstanding tax or social security debt. If you're wondering how VAT, withholding tax, and the young entrepreneur exemption play out in your day-to-day sales once your company is set up, check out the article we've dedicated to that topic.

Read: E-commerce tax guide (VAT, withholding, young entrepreneur)