TL;DR. To start an online store in Turkey in 2026: pick a niche backed by demand, register a sole proprietorship (şahıs) or A.Ş., set up KVKK-compliant data handling, connect a TRY-native payment processor (iyzico, PayTR or Stripe), launch a storefront, list on Trendyol and Hepsiburada in parallel, then run your first paid campaigns. Total time to first sale: under a week if you use a turnkey platform.

The Turkish e-commerce market is one of the fastest-growing in EMEA. The barrier to entry is low — the barrier to profitable operation is the friction between seven distinct systems that have to talk to each other. This guide walks each step in the order it should happen.

Step 1: Pick a niche and validate demand

Most failed Turkish e-commerce launches die at this step, not later. Before you spend anything on inventory or branding, validate that there is real demand at a price you can serve profitably.

Search Trendyol for the product category. Look at the top three sellers. Read 50+ recent reviews — what do customers complain about?
Use Google Trends with geo: TR to see whether interest is growing, flat, or declining.
Check Hepsiburada's "best sellers" list in your category to estimate weekly sales velocity.
Talk to five people you know who would actually buy the product. If none of them push back on price, you have not pushed price hard enough.

Niche checklist:

Test	Pass criteria
Demand	Top Trendyol seller moves 100+ units/week
Margin	You can sell at 60% gross margin minimum (commissions eat 5–25%)
Defensibility	You can ship in under 48 hours, or have a unique source
KVKK risk	You are not handling sensitive personal data (health, finance, minors)

Step 2: Register your company

In Turkey, e-commerce sellers operate under one of three legal forms:

Sole proprietorship (şahıs şirketi). Cheapest to set up (~3,000–5,000 TRY one-time, accountant fees apart). Tax simple. Best for first-year revenue under ~3M TRY.
Limited Şirket (Ltd. Şti.). Higher setup cost (~15,000 TRY all-in), needs minimum capital (~50,000 TRY), but gives you a corporate veil and easier supplier negotiation.
A.Ş. (Anonim Şirket). Required if you want to take outside investment or scale across categories. Around 50,000+ TRY minimum capital and meaningful annual compliance overhead.

A first-time merchant should default to şahıs and switch to Ltd. when monthly revenue stabilizes above 250,000 TRY. Talk to an accountant before you do anything irreversible — the wrong company structure for your revenue tier is the most common avoidable tax mistake.

Step 3: KVKK compliance from day one

KVKK (Kişisel Verilerin Korunması Kanunu) is Turkey's data-protection law, modeled on GDPR. If you collect any customer data — name, address, email, phone — you must comply. The penalties for non-compliance start at 12,000 TRY per incident and run into the millions for systematic violations.

What you actually need on launch day:

A published privacy policy and cookie policy on your storefront (every page footer).
A "VERBİS" registration if you process data on more than 50 customers per year (every real e-commerce business).
A documented data-processing register: what fields you collect, why, where they're stored, how long you retain them.
An explicit consent checkbox at signup and at checkout — pre-checked boxes are not consent under KVKK.
A working "delete my data" path; in practice an email address that goes to a person who can actually delete records.

The good news: most of this is standard checkbox work if you use a platform that ships with KVKK templates.

Step 4: Choose a storefront platform

You have four realistic options for a Turkish e-commerce launch:

Platform	Strength	Weakness
Shopify	Best app ecosystem globally	Pricing in USD, no native Turkish marketplace integration
Ticimax / IdeaSoft	Native Turkish, marketplace integrations included	Older themes, slower to ship new features
WooCommerce	Free, infinitely customizable	You operate it — hosting, security, KVKK, all on you
FaStart	Turkish-native, marketplace + payments + KVKK out of the box	Younger product, smaller theme library

Pick based on the bottleneck you want to remove. If you have a developer, WooCommerce is fine. If you don't, the "Turkish-native" platforms exist for a reason — they ship Trendyol, Hepsiburada, iyzico, and KVKK templates already wired.

Step 5: Connect payments

Three TRY-native options dominate:

iyzico — broadest support, easiest 3D Secure integration, ~2.49% + 0.25 TRY per transaction.
PayTR — strong dispute handling, slightly cheaper for high volume.
Stripe (Turkey) — best if you also sell internationally; supports recurring billing natively.

Decision rule: if more than 80% of your customers will pay in TRY, start with iyzico. If you expect international buyers, Stripe is worth the slightly more involved onboarding.

You will need: tax ID, bank account in your company name, and the company registration documents from Step 2. Approval typically takes 3–10 business days.

Step 6: Launch on marketplaces

Do not wait until your storefront is "perfect" to list on marketplaces. Trendyol and Hepsiburada are where the demand already is. Your storefront is where you build margin and brand.

A reasonable opening sequence:

Trendyol Seller account (Turkey's largest marketplace, ~50% market share).
Hepsiburada Marketplace (second largest, slightly older buyer demographic).
Amazon Turkey (smaller but growing, useful for international SKU expansion).
N11 (specific category strength — toys, kids, hobbies).

Sync inventory between your storefront and marketplaces from day one. Manually managing four channels' stock is the single fastest way to oversell, get suspended, and refund 30% of your revenue.

Step 7: Your first ads

You have two efficient first campaigns:

Google Shopping in Turkish, with product feed sync from your storefront. Budget: 100–300 TRY/day, daily review.
Meta Advantage+ Shopping campaign with a 10-product seed catalog. Same budget tier.

Avoid TikTok and influencer spend in the first 30 days unless you already have an organic following — paid social on cold accounts burns capital before you have the data to optimize.

FAQ

How long does it take to launch? With a turnkey platform: 5–7 days from company registration to first sale. With WooCommerce or a custom build: 4–8 weeks.

How much do I need to start? Realistic minimum: 30,000 TRY (company setup + initial inventory + 30 days ad budget + KVKK compliance). Comfortable launch: 75,000–150,000 TRY.

Do I need an accountant? Yes, from day one. Turkish tax code changes often; a TL 1,500/month accountant is one of the highest-ROI hires you will make.

Can I sell internationally? Yes, but treat it as a separate problem. Different tax (export refund), different shipping (UPS / DHL / Aramex), different payment (Stripe). Most successful Turkish merchants nail Turkey first, then expand.

What about return rates? Apparel and shoes run 25–40% returns in Turkey. Consumer electronics 5–10%. Food and beverages under 3%. Price your COGS accordingly.

If you want to skip the integration plumbing — connecting your storefront, payments, marketplaces, and KVKK templates — FaStart ships all of that wired together and aimed at the Turkish market specifically. Free plan with 4.9% commission lets you launch in an afternoon and decide whether to keep building on it.