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10 Essential Questions About TIN in India

Updated On December 3, 2025
1 minute Read
10 Essential Questions About TIN in India

SaaS entities and digital marketplaces in India commonly face reporting delays when misapplying the PAN or GSTIN. This is a massive issue in the country’s integrated tax system, where claiming Input Tax Credits (ITC) depends entirely on accurate invoice data. Similarly, international firms may suffer compliance setbacks from unvalidated identifiers in cross-border filings, stressing the need for exact identifier control during client onboarding

India’s tax regulations, administered centrally with state enforcement, involve a unified framework that can cause mix-ups between income and GST codes. These lapses, such as using a PAN where a GSTIN is required, frequently lead to audits or blocked working capital. This article answers the 10 essential questions about TIN in India, offering clear insights to help you navigate the system. It is notably applicable for locals, foreign investors, and multinational operations, with solutions like TaxDo delivering reliable validation in anticipation of 2026 digital tax enhancements. 

Common Questions

What is a TIN in India?

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A TIN in India primarily refers to two numbers. The Permanent Account Number (PAN) is a 10-digit alphanumeric ID issued by the Income Tax Department for income tax tracking. The Goods and Services Tax Identification Number (GSTIN) is a 15-character ID used for indirect tax (GST). For SaaS companies, the GSTIN is the single most important number; without it, you cannot issue valid tax invoices or claim credits.

What types of TIN numbers exist?

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Who needs a TIN in this country?

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What is the format of the TIN?

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How to register or apply for a TIN?

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Which authority issues the TIN?

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How to verify a TIN in India?

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What happens if a TIN is incorrect or missing?

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Do you need a TIN for international transactions?

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How TaxDo Simplifies India Tax ID Number Verification

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Conclusion

Mastering TIN in India—from the PAN to the GSTIN—is the cornerstone of claiming tax credits and ensuring smooth E-Invoicing. With these answers, you're prepared for compliance. To explore how TaxDo can address your specific client onboarding challenges in India, we invite you to schedule a free demo with our team.