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İndex Denetim

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İndex Denetim · Nilüfer, Bursa, Turkey

Accounting and independent audit services in Bursa, Turkey

At our office in Nilüfer we provide accounting, independent audit, tax and social security advisory services to companies, small businesses and foreign investors. We track your tax return and payment deadlines for you.

Upcoming deadlines
  1. Withholding tax and social security return

    September 2026

    6 days
  2. VAT return and payment

    September 2026

    8 days
  3. Social security premium payment

    September 2026 · moved to the next working day

    13 days
  4. Provisional tax return

    Q3 2026 (Jul–Sep)

    28 days
  5. Withholding tax and social security return

    October 2026

    37 days

Online services

You can reach the portal logins here.

Services

Our services

From monthly accounting to independent audit, and from VAT refunds to procedures for foreign investors, one team handles all your work.

All services

Not sure which service you need?

In the initial consultation we listen to you about your business and define the right scope of services together.

Request a consultation

About us

Why İndex Denetim?

Two of our partners are independent auditors. Our team that keeps your monthly accounts therefore knows what is examined in an audit and organises your records accordingly. On legal matters we work with specialist lawyers.

Get to know us
2003In the profession since
Our founding partner has worked as a certified public accountant (SMMM) since 2003.
BursaOffice in Nilüfer
We meet at our office, by phone or online.
2Independent auditor partners
Statutory and voluntary independent audits are carried out by our partners.
TR / ENWorking languages
We correspond in English and prepare reports in English for companies with foreign shareholders.

How we work

How do we start working together?

When you change accountants, we handle the handover. Your affairs are not disrupted, even during a filing period.

  1. Step 1

    Initial consultation

    We listen to you about your business, your field of activity and your current accounting arrangements. The meeting is free of charge and can take place at our office, by phone or online.

  2. Step 2

    Written proposal and contract

    We prepare a written proposal based on document volume, number of employees and scope of services, and sign a service contract in line with professional regulations.

  3. Step 3

    Handover or formation

    We handle the handover of books and documents from your previous accountant, the e-filing authorisations and the e-document settings. If a new company is being formed, we take on the formation procedures.

  4. Step 4

    Monthly routine

    We receive your documents regularly every month. We file returns without waiting for the last day and inform you of the tax assessed.

Our articles on tax, social security and company law are published in Turkish. Blog · Doing business in Turkey: a guide for foreign investors

FAQ

Frequently asked questions

Questions not answered here can be discussed by phone or at our office.

What do I need to do to change my accountant?

First, a service contract is signed with your new accountant (mali müşavir), and the contract with your current accountant is terminated in writing. The books, documents and electronic records are taken over with a handover report, and the authorisations in the tax office, e-filing, e-ledger and social security systems are transferred to the new accountant. The change can be made in the middle of a period, but it must be clear from the outset who will file any returns still outstanding. We plan and follow these steps on your behalf; for details, you can reach us via our contact page.

What is the difference between a mali müşavir (SMMM) and a bookkeeper?

A certified public accountant (serbest muhasebeci mali müşavir, SMMM) is a professional licensed under Law No. 3568 after completing the traineeship and examinations, who can provide advice on financial matters in addition to keeping books. The person called a "bookkeeper" in everyday language does not always hold this title. The person who signs your tax returns and represents you before the tax administration must be a licensed professional. Our founding partner has worked as an SMMM since 2003.

What does an accounting (mali müşavirlik) service cover?

The core scope is keeping the books, preparing and filing tax returns, payroll and social security notifications, and tracking statutory deadlines. Tax planning, how regulatory changes will affect you, responses to official letters and financial reporting for management are also part of the advisory work. The scope is set out in writing in the contract according to the needs of your business. For more information, see our accounting and bookkeeping service.

What are accountants' fees based on?

The fee is based on the type of business (sole proprietorship, limited or joint stock company), the number of documents per month, business volume, the number of employees and the scope of the services you want. Additional work such as foreign trade, VAT refunds, a multi-branch structure or reporting in a foreign language is also taken into account. There is therefore no single price that fits everyone. If you send us your details using the request a quote form, we will prepare an assessment specific to you.

Is there a minimum for accounting fees?

Yes. The minimum fee tariff published for each period by the professional body (TÜRMOB) sets the lowest fees professionals may charge, and fees below this tariff cannot be charged. The tariff distinguishes amounts by type of business and scope of service. The proposal we give you is prepared in line with the tariff applicable for the relevant year.

I have forgotten my e-Mükellef password. What should I do?

Since client portal accounts are set up by our office, for password resets and account problems you only need to call or write to us. After verifying your identity, we will restore your access. For your security, we recommend that you never share your password and ignore password requests sent by email. Our contact details are on our contact page.

Contact

Contact us for a free initial consultation

In the meeting we listen to you about your business and your current accounting arrangements and define the scope of services that suits you. We then send you our written proposal.

We will call you