Tax

Calculator

Reports

Compliance

Analytics

Calculator

Reports

Compliance

Analytics

Calculator

Reports

Compliance

Analytics

Calculator

Reports

Compliance

Analytics

APIs

for India

End-to-end tax automation platform for businesses to verify tax ids, calculate & pay taxes, generate e-invoices, process tax documents, analyze & reconcile tax ledgers, prepare and file tax returns through SDKs & APIs.

PRODUCTS

API Stack for internet scale businesses

KYC

Onboard customers faster, safer

Deliver instant identity verification to ensure secure, fast customer onboarding.

INCOME TAX

Direct tax compliance on auto-pilot

Calculate income tax on diverse income sources, process tax forms and prepare tax returns. Embed tax filing journey in your app.

TDS

TDS on payments for businesses

Calculate & deposit TDS on salary & non-salary payments, reconcile tax receivable & payable, prepare & file TDS return and generate Form 16s.

GST

Automate GST for growing businesses

As businesses grow, so do compliances. Handle GST compliance with ease and ensure your business thrives without unnecessary complications.

WHY SANDBOX

The core of tax compliance for growing businesses

As businesses scale, managing tax compliance becomes more complex. Our platform is trusted by some of India’s fastest-growing businesses, simplifying tax reporting and ensuring accuracy across multiple tax domains. With our APIs, we take care of tax compliance, so businesses can focus on what truly matters, scale.

Know more

99.999%

Historical uptime of Sandbox APIs

Data Blind

We don't store the business data

1 Billion+

Successful API Calls and
growing

200+

APIs covering every aspect of tax compliance

CUSTOMER STORIES

Sandbox powers the leading brands

80%

Reduction in drop-off rate during seller onboarding

Weeks to minutes

Time taken to onboard new sellers to the Amazon Platform.

99%

Reduction in potential notices due to erroroneous filings

3000+

TDS Returns filed by employers every quarter.

70%

Reduction in drop-offs during host registrations.

30%

Increase in revenue

75%

Reduction in compliance-related overheads.

3X

Faster vendor onboarding, reducing time to activation and improving supply chain agility.

1 Million+

Average Tax P&L Reports downloaded annually

95%

Reduction in tax-compliance related overheads.

Amazon is using Sandbox to simplify seller onboarding using Digilocker & Entitylocker to verify issued documents.

By partnering with Sandbox, we have empowered employers to solve end-to-end TDS Compliance.

Sandbox enabled Airbnb to transform host onboarding, by replacing a manual verification process with a seamless online kyc for hosts.

Tata user Sandbox GST APIs to streamline vendor risk assessments, eliminating reliance on physical assessments.

Coinswitch provides accurate Tax P&L Report using Sandbox APIs, making it easy to keep pace with constant changes in direct tax code.

DESIGNED FOR DEVELOPERS

Build in minutes.
Scale to millions.

We obsess over the maze of licenses, tax codes, and regulatory frameworks that make up the Indian tax landscape so that you can go from zero to lightspeed in minutes.

A CURL POST request to Sandbox API’s TCS calculator endpoint, showing headers and JSON payload for an entity, with a sample 200 OK JSON response.

Test on the go

Deep dive into tax details or experiment directly from Sandbox Developer Docs.

API Reference

Built with the tools you love

Browse, fork and test APIs in seconds with our comprehensive collections.

Postman Collections

Go-live within minutes

With API Clients and SDKs, no need to start from scratch.

SDKs and Clients

Ready to get started?

Create an account instantly to get started or contact our sales team to discuss your unique requirements.

Always know what you pay

Simple, transparent pricing for business of all sizes.

See Pricing

Jump into integration

Detailed API documentation to simplify implementation.

API Reference

Sandbox is India’s leading tax API platform, helping businesses automate end-to-end compliance across KYC, Income Tax, TDS, and GST. Backed by deep expertise, strong security practices, and authorized licenses, Sandbox APIs interact in real time with government systems and trusted entities. Trusted by startups, unicorns, and enterprises in the fintech space, Sandbox empowers businesses to calculate and report taxes, extract forms, verify identities, and file returns at scale.

© 2025

Sandbox Financial Technologies Private Limited.