# TAN Validation for Tax Deduction Numbers API | FastKYC

> Validate a TAN and retrieve the associated taxpayer details, confirming an entity is authorised to deduct tax at source.

Source: https://www.fastkyc.com/apis/tan-validation-basic/

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[Finance APIs](/apis/finance/)

# Tan Validation Basic API

Validate a TAN and retrieve the associated taxpayer details, confirming an entity is authorised to deduct tax at source.

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Category

[Finance APIs](/apis/finance/)

Built for

-   [Lending & NBFC](/industries/lending/)
-   [Marketplaces & E-commerce](/industries/marketplaces/)

## What the Tan Validation Basic API does

Tan Validation Basic checks a Tax Deduction and Collection Account Number and returns the taxpayer details registered against it.

Any entity deducting tax at source must hold a valid TAN, and it appears on every TDS certificate they issue. Verifying it confirms the deductor is genuine and that the certificates they provide are meaningful.

## Where teams use the Tan Validation Basic API

1.  Verifying a deductor before accepting TDS certificates
    
2.  Confirming an employer's TAN during employment checks
    
3.  Validating vendor tax registration details
    
4.  Reconciling TDS entries against the deducting entity
    

## Frequently Asked Questions (FAQs)

What is a TAN?

A ten-character identifier required for anyone deducting or collecting tax at source. It differs from PAN, which identifies the taxpayer.

How does this differ from TAN Validation?

Both validate a TAN and return taxpayer details. Choose based on the response depth your workflow needs.

Why verify a TAN?

An invalid or fabricated TAN means any TDS certificate carrying it is worthless, and the deduction may never have reached the tax department.

## Related APIs

-   [TAN Validation API Validate a Tax Deduction Account Number and retrieve the associated taxpayer details from tax records, for vendor, employer and deductor checks.](/apis/tan-validation/)
-   [ITR Download API Retrieve a taxpayer's income tax return information, including filing history, status and secure document links, to verify income for lending.](/apis/itr-file-download/)
-   [Search ISIN Record API Validate an ISIN and retrieve the security's current status and details, for securities, demat and investment workflows that depend on the right instrument.](/apis/isin-record/)
-   [ITR File Download V API Retrieve a taxpayer's filing history with downloadable ITR-V acknowledgement documents for each assessment year, as proof of income tax filing.](/apis/itr-file-download-v/)

## Start verifying with the Tan Validation Basic API

Book a walkthrough and we will show the call, the response and how it fits your onboarding flow.

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-   One API key for every check
-   Verified against official Indian records
-   Built for onboarding at scale