Passport or other identification document.

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Go to the tax office - you can find out your number at any FTS office, you only need to provide your passport details.
How to find out your tax identification number for individual entrepreneurs and self-employed individuals Individual entrepreneurs and self-employed persons have the same TIN they received at birth or when they were registered. So you can look it up in the same ways. Plus, there are a few more ways: A self-employed person can see the TIN in the My Tax application or on the corresponding online service. Log in to your personal account — the necessary data is stored in the Profile section.

For individual entrepreneurs, the code is indicated in the personal account of the taxpayer-individual entrepreneur .
How to find out your Taxpayer Identification Number (TIN) for a legal entity Finally, you can find out the TIN of an entrepreneur or organization through the service " Providing information from the cayman islands phone number material Unified State Register of Legal Entities/Unified State Register of Individual Entrepreneurs". Enter the known data (for example, full name or OGRN/OGRNIP), select the region of registration, and then click "Find": all known organizations and individual entrepreneurs with a suitable set of details will appear in the list below.
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Guide to the simplified tax system: who is the simplified tax system suitable for and what will change in 2025 How and where to obtain a Taxpayer Identification Number (TIN) for an individual If for some reason you do not have an identification number (for example, you have only recently moved to Russia or were born before 1999 and did not receive one), you can obtain one from the tax office at your place of residence or stay.
To obtain an identification number, you must provide the tax office with a package of documents: Statement of desire to register for tax purposes.