Greece AFM Tax Number: The Ultimate 2026 Guide for Investors

Last Updated: June 2026 | Reading time: 11 min

By Aşkan Behbud — Century 21 Perfect, 15+ years of real estate experience, Bağdat Caddesi

If you're considering investing in Greece—whether buying a sun-drenched villa, launching a business, or applying for the popular Golden Visa program—your journey begins with one foundational document: the AFM Tax Number. Known in Greek as 'Arithmos Forologikou Mitroou' (Αριθμός Φορολογικού Μητρώου), this unique 9-digit number is the master key to all financial and legal transactions in the country. Without it, you cannot even open a simple bank account.

For many international investors, the prospect of navigating Greek bureaucracy can seem daunting. However, with the right guidance and preparation, obtaining a Greece AFM tax number is a remarkably straightforward and swift process. This definitive guide will walk you through the entire procedure for 2026, detailing the necessary documents, expected costs, common pitfalls, and expert advice to ensure your first step into the Greek market is a confident one.

What is an AFM Number and Why is it Essential?

Think of the AFM as Greece's equivalent of a Social Security Number (SSN) or a National Insurance (NI) number, but specifically for financial activities. It is a unique Tax Identification Number (TIN) assigned by the Greek tax authorities to every individual and legal entity engaging in financial transactions within Greece. Its purpose is to ensure transparency and proper fiscal oversight.

Transactions That Absolutely Require an AFM

As a foreign investor, you will find that the AFM is a prerequisite for virtually every significant step. Here is a list of key activities where an AFM is mandatory:

• Acquiring Real Estate: It is legally impossible to sign a property purchase contract ( συμβόλαιο) in Greece without a valid AFM. Both the buyer and the seller must have one.
• Opening a Bank Account: All Greek banks require an AFM before they will open an account for a non-resident. This is a strict anti-money laundering (AML) requirement.
• Applying for the Golden Visa: The Greek Golden Visa program, one of Europe's most popular, requires applicants to have an AFM to complete the qualifying real estate investment.
• Starting a Business: To establish a company, become a shareholder, or be appointed as a director in a Greek entity, an AFM is required.
• Inheriting Assets: If you are the beneficiary of an inheritance that includes assets located in Greece, you will need to obtain an AFM to process the transfer.
• Purchasing a Vehicle: Registering a car, yacht, or any other vehicle in your name requires an AFM.
• Utility Connections: Connecting electricity, water, and internet services to a property you own necessitates an AFM.

The 2026 Step-by-Step Guide to Obtaining Your Greek AFM Tax Number

Thanks to significant digitalization efforts by the Greek government, the AFM application process is more streamlined than ever. For non-residents, the entire process can be completed remotely through a legal representative.

Step 1: Appoint a Local Representative (Proxy)

The first and most crucial step is to appoint a proxy in Greece to act on your behalf. This is typically a qualified lawyer or an accountant. They will handle the paperwork, communicate with the tax office (known as DOY or ΔΟΥ), and ensure compliance with all local regulations. This is not just a recommendation; for non-residents, it's a practical necessity.

Step 2: Prepare and Apostille Your Documents

You will need to gather a few key documents from your home country. The most critical aspect is ensuring that official documents, such as your passport copy and power of attorney, are certified with an Apostille stamp pursuant to the Hague Convention. The Apostille authenticates the document for international use.

Step 3: Grant Power of Attorney (PoA)

You have two options for granting a PoA to your representative:

1. In Greece: You can travel to Greece and sign the PoA before a Greek public notary. This is a good option if you plan to visit for property viewings.
2. Remotely from Abroad: The most common method is to sign a PoA at a notary public in your home country. The document, often drafted by your Greek lawyer, must then be apostilled and couriered to Greece. This allows the entire process to be handled without you ever leaving home.

Step 4: Application at the Competent Tax Office (DOY)

Once your representative has the apostilled PoA and other required documents, they will submit the application at the appropriate tax office. This is usually the office for non-residents in Athens or the local office in the area where you plan to invest. They will complete the necessary forms, primarily the 'M1' (Personal Details Registration) and 'M7' (Representative Relationship Declaration).

Step 5: Receive Your AFM Certificate and TAXISnet Credentials

Upon successful submission, the AFM number is typically issued on the same day or within a few business days. You will receive an official certificate (Βεβαίωση Απόδοσης ΑΦΜ) confirming your new tax number. Crucially, you will also be issued credentials—a username and password known as 'Kleidarithmos'—to access Greece's online tax portal, TAXISnet. These credentials are vital for future tax filings and should be kept secure.

Required Documentation Checklist (2026 Edition)

Ensuring your documentation is in perfect order is key to a fast, hassle-free application. Here are the standard requirements for 2026:

• Passport Copy: A clear, certified copy of your valid passport's identification page. This must be apostilled.
• Power of Attorney (PoA): The legal document authorizing your representative to act on your behalf. This must be notarized and apostilled in your country of residence.
• Proof of Address: A recent official document verifying your home address, such as a utility bill or bank statement. In some cases, this may also need to be apostilled.
• Birth Certificate (Optional): Some tax offices may request an apostilled birth certificate to verify parental names, especially for applicants from non-Latin alphabet countries.
• M1 & M7 Forms: These Greek tax forms will be completed and signed by your proxy on your behalf.

Costs & Timelines: What to Expect in 2026

The process of obtaining an AFM is both cost-effective and relatively quick compared to other European bureaucratic procedures.

This table provides a breakdown of the expected costs:

Frequently Asked Questions (FAQ)

Does a Greek AFM number expire?

No, the AFM is issued for life and does not need to be renewed. It remains valid indefinitely.

Do my spouse and children need a separate AFM?

If you are purchasing property jointly with your spouse, they will also need their own AFM. For a Golden Visa application, typically only the main applicant needs an AFM for the investment transaction. Minor children do not need one.

What happens if I lose my AFM certificate?

Your number is permanently stored in the Greek state's records. Your representative can easily request a new official printout from the tax office. The number itself will not change.

Does getting an AFM automatically make me a tax resident of Greece?

No, it does not. Tax residency is determined by other factors, primarily the '183-day rule' (spending more than 183 days per year in Greece) or having your vital interests centered in the country. Simply holding an AFM and owning property does not, by itself, create tax residency.

Will my worldwide income be taxed in Greece?

No. As a non-tax resident, you are only liable for tax on income generated within Greece (e.g., rental income from a Greek property). Your income from other countries is not subject to Greek taxation, and most countries have Double Taxation Treaties with Greece to prevent this.

Is an AFM mandatory for the Greece Golden Visa?

Yes, it is absolutely mandatory. You cannot complete the required real estate purchase to qualify for the Golden Visa without first obtaining an AFM.

Can I open a Greek bank account without an AFM?

No. As of 2026, no Greek bank will open an account for a non-resident without a valid AFM number. It is the very first document they will ask for.

Conclusion: Your Gateway to Greek Investment

Obtaining a Greece AFM tax number should not be viewed as a bureaucratic hurdle, but rather as the official first step on your exciting investment journey in Greece. The process is well-defined, efficient, and can be handled entirely by a professional on your behalf, making it accessible to global investors.

1. Engage a Professional Early: Your first action should be to find a reputable Greek lawyer or consultant specializing in foreign investment.
2. Prepare a Comprehensive PoA: Ensure your Power of Attorney is broad enough to cover not just the AFM application but also bank account opening and the property purchase.
3. Prioritize Document Accuracy: Double-check that all names match exactly across all documents and that all required Apostille stamps are in place.
4. Secure Your TAXISnet Credentials: Treat your 'Kleidarithmos' passwords with the same security as your online banking details. They are your key to managing your fiscal obligations in Greece.

By following this guide, you can navigate the AFM process smoothly and quickly, moving you closer to acquiring your dream property or launching your business venture in the Hellenic Republic.

Disclaimer: The information provided in this article is for general informational purposes only and does not constitute legal or financial advice. The specifics of your situation may vary. It is strongly recommended that you consult with a qualified Greek lawyer and tax advisor for advice tailored to your individual circumstances.

Aşkan Behbud — Century 21 Perfect, Bağdat Caddesi