Business owners in Russia often encounter declaration rejections due to confusion between the INN (Taxpayer Identification Number) for individuals and legal entities. This is a common challenge in the federation’s unified tax registry, particularly for SaaS companies managing digital VAT (“Google Tax”). Similarly, cross-border traders may face delays in VAT refunds from unverified identifiers during client onboarding.
Russia’s tax regulations are under the Federal Tax Service (FTS). Errors in applying the INN structure—specifically the digit length—are frequent. Using an individual’s 12-digit INN where a company’s 10-digit INN is required can result in immediate filing rejection. This article answers the 10 essential questions about TIN in Russia, offering clear insights to help you navigate the system. It is notably applicable for international entities, with solutions like TaxDo providing efficient tools for ongoing compliance amid 2026 digital enhancements.
