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Online Store Builder · Istanbul, Türkiye

E-Commerce Website Development in Istanbul, Türkiye

If you run a business in Istanbul and want to sell online, we build an e-commerce platform and mobile application to your exact requirements, from the first product page to the last delivery update. Checkout with credit cards with instalments (taksit) and Troy cards, delivery through PTT Kargo or your own team, and VAT-ready invoicing.

  • Web platform + Android/iOS app
  • credit cards with instalments (taksit) and Troy cards
  • Delivery via PTT Kargo
  • Demo within 24 hours
Customer paying by card on an online store — Istanbul

Quick answer

Who builds an online store in Istanbul, Türkiye?

NNT Mart by N&T Software builds custom online stores and mobile apps for businesses in Istanbul, Türkiye, designed to each client's requirements. Platforms support credit cards with instalments (taksit), Troy cards and iyzico, ship through PTT Kargo and Yurtiçi Kargo, follow the Personal Data Protection Law No. 6698 (KVKK), and come with a free demo within 24 hours of the requirements meeting.

Key takeaways

  • We do not hand Istanbul businesses a ready-made theme: we study how you sell, then build the online platform and Android/iOS app your customers and staff actually need.
  • Checkout ready for credit cards with instalments (taksit), Troy cards and iyzico, with delivery through PTT Kargo and Yurtiçi Kargo or your own team.
  • VAT-ready invoicing and controls designed around the Personal Data Protection Law No. 6698 (KVKK).
  • Free demo within 24 hours of the requirements meeting; you own 100% of the source code after final payment.

Why an online store makes sense for Istanbul

Istanbul is a largest city in turkey, with a population of roughly 16 million, and one of the markets in Türkiye where we build online stores.

Key sectors include E-commerce, gaming studios, crypto exchanges and banks, with business districts such as Levent, Maslak, the Istanbul Financial Center and Kadıköy.

Logistics are supported by Istanbul Airport and Sabiha Gökçen Airport, which matters when you promise customers fast delivery.

Türkiye has a large, digitally fluent population and a culture of card instalments that strongly drives online sales. E-invoicing and ETBIS registration need to be part of the platform.

Shoppers and trade buyers in Istanbul already compare options on their phones; an online store that loads fast, shows accurate stock and accepts credit cards with instalments (taksit) turns that research into orders.

Local details we build into every Istanbul project

Conversion in Istanbul depends on small local signals — the right currency, the right words and the right payment and courier names.

Currency and pricing

Prices, taxes, shipping and refunds are shown in Turkish lira (TRY), formatted the way Istanbul customers read them.

Language and content

We localise pages, emails and notifications into Turkish where your audience needs it.

Local trust signals

We add the payment logos, courier names and policy pages shoppers in Istanbul recognise: credit cards with instalments (taksit) and Troy cards and delivery through PTT Kargo.

Domain, phone and contact

A .tr domain (or your own) builds local trust and search relevance. Contact buttons are pre-set with +36, so a customer in Istanbul taps once to call or message.

Talent and partners nearby

Istanbul draws on Boğaziçi, Istanbul Technical University and Koç University, which means plenty of local staff, interns and technology partners to run the store after launch.

An online store built around your Istanbul business

Istanbul businesses tell us what they sell and how they want to sell it; our engineers turn that into a custom online store, an admin system and a mobile app shaped around their operations.

In Istanbul we typically work with retail brands, D2C start-ups, speciality shops and manufacturers selling direct, and with sellers in categories such as fashion, electronics, home and textiles and groceries that have strong online demand in Türkiye.

We start with a requirements meeting, show you a working demo within 24 hours, and only then propose scope, milestones and budget.

Features of your online store in Istanbul

These are the building blocks of an online store. We scope them with you, so you pay for what your Istanbul operation needs.

Branded storefront

A fast, mobile-first design on your own domain with your colours, typography, banners, landing pages and SEO-ready category structure. Delivery can be booked through PTT Kargo, Yurtiçi Kargo and Aras Kargo or dispatched by your own riders around Istanbul.

Catalogue manager

Categories, brands, variants, bundles, specifications, images, videos and bulk import/export so your team can manage thousands of SKUs. Inventory can sit in Istanbul, in a partner warehouse or across Türkiye, with click-and-collect where customers want it.

Checkout and payments

Guest and account checkout, local payment gateways, wallets, bank transfer, cash on delivery, coupons and abandoned-cart recovery. Revenue reports by product, repeat buyer and delivery area of Istanbul guide stock and marketing decisions.

Orders and fulfilment

Order confirmation, packing slips, courier booking, tracking links, cancellations, returns, refunds and customer notifications. Pages, search filters and wording are tuned to how people in Istanbul look for products, in Turkish if your audience needs it.

Inventory and locations

Stock by warehouse or store, low-stock alerts, store pickup, local delivery zones and sync with your existing inventory system. Catalogues come in from spreadsheets, ERP exports or supplier feeds, so your Istanbul team keeps its current way of working.

Growth and reporting

Promotions, loyalty, reviews, email and WhatsApp campaigns, plus dashboards for revenue, products, customers and conversion. Payment steps are built around credit cards with instalments (taksit), Troy cards and iyzico, the options shoppers here already trust.

Who we build for in Istanbul

Popular online categories in Türkiye include fashion, electronics, home and textiles, groceries, beauty and furniture. Local demand in Istanbul is shaped by E-commerce, gaming studios, crypto exchanges and banks, so we often design catalogues and B2B ordering around those sectors. In Istanbul, we most often build online stores for:

Retail brands

We map how retail brands sell today and digitise it end to end — from enquiry and order to payment, dispatch and repeat purchase.

D2C start-ups

For D2C start-ups, we usually start with checkout and payments, then add courier and shipping aggregators once orders are flowing.

Speciality shops

Catalogue, pricing and fulfilment rules designed for speciality shops in Istanbul, connected to the systems you already use.

Manufacturers selling direct

Manufacturers selling direct get orders and fulfilment plus growth and reporting workflows tailored to their operations.

Grocery and food businesses

We map how grocery and food businesses sell today and digitise it end to end — from enquiry and order to payment, dispatch and repeat purchase.

Multi-outlet retailers

For multi-outlet retailers, we usually start with branded storefront, then add WhatsApp Business API once orders are flowing.

Payments customers in Istanbul expect

Checkout is where most online sales are won or lost. In Türkiye, customers expect to pay with credit cards with instalments (taksit), Troy cards and iyzico, and many also look for PayTR, bank transfer (FAST) and cash on delivery.

Provider approval, settlement time and fees differ by business type, so we shortlist gateways with you, then wire up status updates, refunds and reconciliation in TRY — card details stay with the provider.

Business buyers around Levent often want invoices or bank transfer, while consumers lean on credit cards with instalments (taksit). We support both flows.

  • Iyzico
  • Bank transfer (FAST)
  • Cash on delivery
  • Troy cards
  • Credit cards with instalments (taksit)
  • PayTR

Fulfilment options for Istanbul orders

Your online store can book shipments and share tracking with PTT Kargo, Yurtiçi Kargo, Aras Kargo, MNG Kargo, Sürat Kargo and Trendyol Express, or route orders to your own riders and stores across Istanbul.

Delivery rules can price by distance, weight, postcode or zone, offer same-day slots in dense areas, and switch on pickup points or click-and-collect where customers prefer them.

Connectivity in the area — Istanbul Airport and Sabiha Gökçen Airport — makes regional and national dispatch from Istanbul practical.

Your own store alongside Trendyol and Hepsiburada

Trendyol, Hepsiburada and Amazon.com.tr are where many shoppers in Istanbul start, which is why sellers list there. The trade-off is commission, limited branding and rules the platform can change overnight.

Your online store becomes the hub: marketplaces and social shops become extra outlets fed from one catalogue, while repeat customers buy directly from you at better margins.

Compliance built into your online store

Turkish VAT (KDV) is 20% standard with 10% and 1% reduced rates; e-Arşiv and e-Fatura invoicing are required above set thresholds.

On privacy we design around the Personal Data Protection Law No. 6698 (KVKK), including VERBIS registration for many data controllers; on consumer rights the store reflects Consumer Protection Law No. 6502 and the E-Commerce Law No. 6563, including ETBIS registration.

We build the technical controls — tax-inclusive pricing, compliant invoices, consent banners, terms and return pages, data-access roles and audit logs. We are not a law firm, so final legal and tax positions should be confirmed with your own adviser in Türkiye.

Android and iOS apps for your Istanbul business

In Istanbul, shoppers browse on phones first. A customer shopping app for Android and iOS can share the same catalogue, cart, offers and order history, with push notifications for drops, price alerts and delivery updates.

One backend serves the website and the apps, and the apps ship under your own Google Play and App Store accounts — so what you change once appears everywhere.

Push notifications can be timed to UTC+3 so offers reach Istanbul customers when they are awake, and the interface can run in Turkish.

  • ERP and inventory software
  • Payment gateways and wallets
  • Accounting and GST/VAT invoicing
  • WhatsApp Business API
  • Meta and TikTok catalogues
  • Courier and shipping aggregators
  • CRM and email marketing
  • Google Analytics 4 and Merchant Center

Integrations above are examples; we connect any system that offers a suitable API, database access or approved import and export process.

Launch roadmap and success metrics

Value first, depth later. For an online store serving Istanbul, the usual sequence looks like this:

PhaseWhat goes live
Launch storeStorefront, catalogue, checkout, payments, shipping and admin go live. Configured for TRY, credit cards with instalments (taksit) and PTT Kargo from the start.
GrowPromotions, loyalty, reviews, marketing integrations and SEO content.
ScaleMobile app, marketplace feeds, multi-warehouse and ERP sync. Reviewed against how Istanbul customers actually buy.

We track conversion rate, average order value, cart abandonment, repeat-purchase rate, page speed (Core Web Vitals) and return rate on a live dashboard from day one, so Istanbul results are visible, not promised.

How Istanbul clients work with us

Istanbul runs on UTC+3, which is 2h 30m behind India (IST). With three 8-hour shifts we are available 24×7, so meetings, demos and urgent fixes happen in your working hours.

We work in English and can deliver storefront content in Turkish. NDAs are signed on request, and you get a named project lead plus direct access to the engineers building your online store.

Our head office is in Chhapi, Gujarat, with an office in Hyderabad and representation in Nigeria, South Africa, Ethiopia and Zambia; Istanbul clients are served remotely with on-site workshops when the project needs them.

Istanbul — local market for online stores
Istanbul · Photo: Wikimedia Commons
Retail clothing store whose range is now sold online — Istanbul

Istanbul — the market we build for

Istanbul — online stores for local businesses
Istanbul · Photo: Wikimedia Commons
Shopper browsing a branded online store on a laptop — Istanbul
Online Store Builder

How we work

How an online store project runs with N&T Software for Istanbul

We do not sell a fixed template. Each online store for businesses in Istanbul moves through seven gated stages, and nothing advances — and nothing is invoiced — until you have approved the working result.

  1. 01

    Discover

    ✓ Scope signed off

  2. 02

    Design

    ✓ Store UX approved

  3. 03

    Build

    ✓ Sprint accepted

  4. 04

    Secure & Test

    ✓ Sale-day ready

  5. 05

    Deploy

    ✓ Store live

  6. 06

    Handover

    ✓ Handover signed

  7. 07

    Support

    ✓ SLA active

A milestone payment plan built around acceptance

Milestones are customised to your requirements — six or more is typical, and delivery time is agreed around your scope. Every payment after the advance is released only after you have seen the working result and given written sign-off. Here is an example plan for a online store:

Launch is where your online store starts earning — so we stay accountable

Every project includes a free 90-day defect warranty. After that, the same team that built your online store keeps it secure, updated and running on a fixed annual fee agreed up front — no open-ended hourly billing and no surprise invoices.

You own the code, the data and the IP

For every online store, upon full and final payment the complete source code and intellectual property are transferred to you — so you can host, maintain and enhance the system with any developer.

Read the full Online Store Builder delivery process — reporting, payment milestones, warranty, team and engagement models →

Online Store Builder in Istanbul — FAQs

How much does an online store cost in Istanbul?

There is no fixed package price: every NNT Mart online store is quoted to your requirements and budget after a free requirements meeting and demo. Cost depends on catalogue size, integrations, payment and delivery rules, mobile apps and support. Payments are split into milestones, and 90% is released only after you accept working modules.

Which parts of Istanbul do you build for?

Clients usually trade around Levent, Maslak, the Istanbul Financial Center and Kadıköy, but the platform is not tied to one neighbourhood: delivery zones, pickup points and prices can be set for any part of Istanbul.

Is the platform compliant with local tax and privacy law in Türkiye?

We build the technical controls — tax-inclusive pricing, compliant invoices and consent management — with the Personal Data Protection Law No. 6698 (KVKK) in mind. Final legal and tax positions should be confirmed with your adviser.

Which couriers do you integrate for deliveries from Istanbul?

Common choices are PTT Kargo, Yurtiçi Kargo, Aras Kargo, MNG Kargo, Sürat Kargo and Trendyol Express. We can also route orders to your own riders, stores or warehouses and set rules by zone, weight or delivery slot.

Do you provide support after launch for clients in Istanbul?

Every project includes a free 90-day defect warranty, followed by an optional fixed-fee annual support package with a dedicated developer, SLA-based fixes and a 24×7 helpdesk across three shifts.

Can you build a mobile app along with the online store for my Istanbul business?

Yes. We build Android and iOS apps for customers, dealers, delivery staff or administrators on the same backend as your online store, and publish them under your own Google Play and App Store accounts.

Can you migrate my existing website or store in Istanbul?

Yes. We review your current platform, products, customers, orders and URLs, then migrate with redirects so you keep search rankings and order history.

What time zone and language will we work in for a Istanbul project?

Istanbul runs on UTC+3 (2h 30m behind India (IST)). We reply within 10 minutes around the clock, meet in your working hours and write storefront content in Turkish as well as English.

Free demo in 24 hours

Plan your online store in Istanbul

Tell us what you sell and how you take orders today. We reply within 10 minutes, meet you to understand your requirements, and share a working demo within 24 hours.

We reply within 10 minutes, 24×7. Your details are used only to respond to your enquiry — see our privacy policy.

Tell us what you sell. We will show you a working demo in 24 hours.

Free requirements meeting, a demo built on your use case and a proposal priced to your budget — with no obligation.

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