When selling a non-residential property that has been used in business activities, you will have to pay personal income tax (PIT) regardless of the duration of ownership.
If you own a non-residential property that was used for business activities and plan to sell it, please note: income from the sale of such property will be subject to personal income tax (PIT), and the long-term ownership tax benefit will not apply.
This is stated in the letter from the Russian Ministry of Finance dated August 22, 2024, No. 03-04-05/79554