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Use Sandbox’s TDS compliance APIs to download CSI files, validate and e-file quarterly returns, and generate TDS and TCS certificates. Add these workflows to your payroll, accounting, or tax software.

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Key features

CSI download

Download Challan Status Inquiry files for return validation.

FVU generation

Validate TDS and TCS return files and generate the FVU package for filing.

E-file returns

Submit validated TDS and TCS returns and download filing receipts.

TDS certificates

Generate and download Form 130 and Form 131 TDS certificates and Form 133 TCS certificates.

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How it works

Follow these steps to file a return. If you already have the FVU file and Form 27A, start at step 3.
1

Download the CSI file

Download the Challan Status Inquiry file to validate the challans in your return.
2

Validate the return

Upload your return text file and supporting files. The File Validation Utility (FVU) checks them and generates the filing package, or reports errors to fix.
3

E-file the return

Submit the FVU file and Form 27A for e-filing. Check the filing status and download the receipt once the job succeeds.
To generate certificates, wait until TRACES processes the relevant statement and makes the certificates available. Then use the TDS certificate API to generate and download them.

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Supported return forms

FVU generation and e-filing support these return forms: See the Income Tax Department’s transition FAQs for the statutory form changes. For certificate forms, see the certificate overview.
FVU generation supports regular and correction returns. For correction returns, include the consolidated file with your return text file and CSI file. See the FVU upload requirements.

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Before you start

Get your API key and access token from the Quickstart guide. Prepare the files and details for your workflow: FVU generation, e-filing, and certificate generation run as background jobs. See the job-based API workflow for uploads and completion checks.

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Integration guides

Follow a guide to file a return or generate certificates.

File Form 138

Download CSI, validate a salary TDS return, and e-file it.

File Form 140

Download CSI, validate a non-salary TDS return for residents, and e-file it.

Form 130 TDS certificates

Check when Form 130 certificates become available after Form 138 processing.

Generate Form 131 certificates

Download Form 131 certificates after Form 140 or Form 144 filing.

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API reference

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CSI download APIs

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FVU generation APIs

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TDS e-filing APIs

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TDS certificate APIs

See the certificate endpoints to submit a generation job, check its status, search jobs, or configure a webhook.