ModernTax - Business Tax Verification API

Business Tax Data API That Actually Works

ModernTax delivers verified tax data in 30 minutes, not weeks. Power your financial platform with 90% first-attempt success rates at a fraction of traditional costs.

Schedule a Demo View API Docs (coming soon)

Trusted by:

SMB Lenders Embedded Finance Companies And More

Business Verification

Completed

Business Name

Acme Solutions LLC

EIN

47-1234567

Tax Return Status

Current (2021-2023)

Tax Liabilities

None

Verification completed in 28 minutes

30-Minute Delivery

Get verified tax data in as little as 30 minutes instead of the industry standard 2-3 weeks

90% Success Rate

First-attempt verification success vs. industry average of only 40%

Simple API

Integrate verified tax data directly into your platform with our API

How ModernTax Works

We've built the infrastructure to retrieve verified tax data so you don't have to

Request Data

Send us basic business information through our API or simply upload a CSV, and we handle the rest - no need to know which specific documents or forms are required.

Data Verification

Our proprietary system pre-validates business details against multiple data sources, improving success rates by 50% compared to traditional methods.

Automated Retrieval

Our AI-powered systems handle all the complex interactions necessary to retrieve official tax data - no more waiting on hold or navigating complex bureaucracy.

Delivery & Integration

Verified tax data is delivered directly to your system via API, ready to integrate with your existing workflows and decision processes.

Verification Status

Validating information

Completed 11:32 AM

Preparing submission

Completed 11:35 AM

Retrieving data

Completed 11:43 AM

Processing response

Completed 12:00 PM

Verification completed in 28 minutes

Why ModernTax API

We've built the tax data infrastructure so you can focus on your core business

AI-Powered Verification

Our proprietary AI technology handles all the complex interactions and data validation that typically requires hours of human effort and expertise.

Enhanced Data Accuracy

We pre-verify business details against multiple data sources to ensure the highest possible success rate with official sources.

Actionable Business Insights

Beyond raw data, we provide analyzed insights that help you make better decisions about business health, risk, and opportunities.

Enterprise-Grade Security

Bank-level encryption and security protocols ensure sensitive business data remains protected throughout the verification process.

Use Cases

Verified tax data powers better decisions across industries

Lending & Credit

Speed up underwriting with verified income and business performance data. Reduce time-to-funding from weeks to hours.

Learn more →

Financial Platforms

Enrich your platform with verified tax data that creates a complete picture of financial health for businesses and their advisors.

Learn more →

Accounting & Tax

Instantly access historical tax data to identify filing gaps, liability issues, and growth opportunities for your clients.

Learn more →

""This solves a real pain point. The ability to make credit decisions based on verified IRS data in minutes instead of weeks is a game-changer for our underwriting process."

Data Science Leader

$8B volume, SMB Lender

Simple API Integration

Our RESTful API makes it easy to integrate tax data verification into your existing workflows. Ready to use in minutes, not months.

Complete tax data verification in a single API call

Webhook notifications for real-time verification updates

Detailed business insights and liability detection

Comprehensive SDK and documentation

View API Documentation (coming soon)


// Example API call to verify business tax data
const response = await fetch('https://api.moderntax.io/v1/verify/business', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    ein: '47-1234567',
    legal_name: 'Acme Business Solutions LLC',
    business_address: {
      street: '123 Main Street',
      city: 'San Francisco',
      state: 'CA',
      zip_code: '94105'
    },
    years_required: [2021, 2022, 2023]
  })
});

const data = await response.json();
// Returns verification_id for tracking status
console.log(data);

Our Partners

We are backed by top venture funds, corporate ventures and angels

How ModernTax Works

Our Process

ModernTax has developed a proprietary system that delivers verified tax data faster than any other solution on the market. Here's how we do it:

1

Submit Business Information

Send us basic business information (EIN, legal name, address) through our API or platform. No need to know what specific tax documents are required.
2

Enhanced Data Validation

Our system cross-references the business information with multiple data sources to validate and correct any details that might cause verification failures.
3

AI-Powered Retrieval

Our proprietary AI system handles all the complex interactions with official data sources, eliminating manual processes and wait times.
4

Data Processing & Analysis

We process the raw tax data to extract key insights about the business, including current standings, liabilities, filing history, and more.
5

Secure Delivery

The verified tax data and insights are delivered to your system via API, ready to integrate with your existing workflows.

Key Differentiators

Unmatched Speed

30-minute verification vs. 2-3 weeks with traditional methods.

Higher Success Rate

90% first-attempt verification success vs. industry average of 40%.

AI-Powered

Advanced AI systems eliminate manual processes and human errors.

Enterprise Security

Bank-level encryption and security protocols throughout the process.

Request a Demo

Features

Platform Capabilities

AI-Powered Verification

Our proprietary AI technology handles all the complex interactions and data validation that typically requires hours of human effort and expertise.

Automated form preparation and submission
Intelligent data extraction and validation
Smart error correction and resubmission
Continuous learning system that improves over time

Business Intelligence

Beyond raw data, we provide analyzed insights that help you make better decisions about business health, risk, and opportunities.

Historical income and revenue trends
Tax liability identification and analysis
Filing compliance status and history
Entity type optimization recommendations

Seamless Integration

Our API-first approach means you can easily incorporate tax data into your existing systems and workflows.

RESTful API with comprehensive documentation
Webhook notifications for real-time updates
SDK support for major programming languages
Custom data formats and delivery options

Enterprise-Grade Security

Bank-level encryption and security protocols ensure sensitive business data remains protected throughout the verification process.

SOC 2 Type II compliance
End-to-end encryption for all data
Role-based access controls
Regular security audits and penetration testing

Schedule a Demo

API Documentation

Getting Started

The ModernTax API allows you to integrate verified tax data directly into your application or platform. Follow these simple steps to get started:

Sign up for a ModernTax account
Generate an API key from your dashboard
Make API requests using our documentation below

Authentication

// Include your API key in all requests
const headers = {
  'Authorization': 'Bearer YOUR_API_KEY',
  'Content-Type': 'application/json'
};

API Endpoints

Verify Business

Start a verification request for a business entity.

POST

/v1/verify/business

Request Body

{
  "ein": "47-1234567",
  "legal_name": "Acme Business Solutions LLC",
  "business_address": {
    "street": "123 Main Street",
    "city": "San Francisco",
    "state": "CA",
    "zip_code": "94105"
  },
  "years_required": [2021, 2022, 2023]
}

Response

{
  "verification_id": "ver_12345abcde",
  "status": "pending",
  "estimated_completion_time": "2025-03-18T13:45:00Z",
  "webhook_url": "https://your-webhook-url.com/tax-verification"
}

Get Verification Status

Check the status of a verification request.

GET

/v1/verify/business/{verification_id}

Response

{
  "verification_id": "ver_12345abcde",
  "status": "completed",
  "business_info": {
    "ein": "47-1234567",
    "legal_name": "Acme Business Solutions LLC",
    "entity_type": "llc",
    "tax_status": "s_corporation"
  },
  "verification_results": {
    "is_verified": true,
    "tax_filings": {
      "2021": {
        "filing_status": "completed",
        "tax_period": "2021-01-01 to 2021-12-31",
        "has_liabilities

30-Minute Delivery

90% Success Rate

Simple API

How ModernTax Works

Request Data

Data Verification

Automated Retrieval

Delivery & Integration

Why ModernTax API

AI-Powered Verification

Enhanced Data Accuracy

Actionable Business Insights

Enterprise-Grade Security

Use Cases

Lending & Credit

Financial Platforms

Accounting & Tax

Simple API Integration

Our Partners

How ModernTax Works

Our Process

Submit Business Information

Enhanced Data Validation

AI-Powered Retrieval

Data Processing & Analysis

Secure Delivery

Key Differentiators

Unmatched Speed

Higher Success Rate

AI-Powered

Enterprise Security

Features

Platform Capabilities

AI-Powered Verification

Business Intelligence

Seamless Integration

Enterprise-Grade Security

API Documentation

Getting Started

Authentication

API Endpoints

Verify Business

Request Body

Response

Get Verification Status

Response