Tax filing infrastructure

Your tax software shouldn’t have to become tax infrastructure.

IrisTaxFiling helps software companies validate, prepare, submit, track, and correct U.S. information returns through a developer-first API.

Built for SaaS platforms, marketplaces, payroll systems, accounting software, and high-volume filers.

Your software

IrisTaxFiling API

Validate

Prepare

Submit

Track

IRS

Don’t build the IRS integration yourself.

Your platform already owns the customer, vendor, payment, and tax data. The painful part is everything between that data and a successful filing.

Your data
Tax mapping
Validation
IRS schemas
Submission
Acknowledgements
Corrections
Audit trail

IrisTaxFiling handles the infrastructure layer.

Filing isn’t just an API call.

High-volume filing is a lifecycle. Every stage below is something your team would otherwise build, run, and keep current.

Data normalizationForm mappingSchema validationBusiness-rule validationSubmission orchestrationIdempotencyRetry handlingIRS acknowledgementsRejection handlingCorrectionsAudit historyFiling statusOperational visibility

Product

Everything between your tax data and the IRS.

01 Ingest

Bring your existing tax data.

Send records without reshaping your data model first.

JSON · CSV · database exports · internal systems

02 Validate

Know what’s going to fail before you submit.

Schema and business-rule checks with field-level errors.

warnings and blockers

03 Submit

Reliable filing infrastructure.

IRIS-ready preparation and submission orchestration.

retries · idempotency · acknowledgement tracking

04 Resolve

Turn rejection into an actionable workflow.

Explain the error, find affected records, correct, revalidate, resubmit.

correction workflow

Filing readiness

Fix issues before they become filing failures.

Interactive prototype using synthetic data. No live IRS transmission occurs from this demo.

filing readinesssynthetic data

file: 2026_1099_batch.csv
records: 102,481
tax year: 2026
form: 1099-NEC

Records0

Ready0

Warnings0

Blockers0

StatusBLOCKED UNTIL FIXED

blockers139 total

Invalid recipient TIN73

Missing recipient information41

Invalid state combination25

Each blocker links to the affected records, so corrections can be revalidated and resubmitted.

Developer-first by design

Bring your data. IrisTaxFiling handles the filing infrastructure.

Your engineers shouldn’t have to become experts in IRS transmission formats, filing workflows, and correction mechanics.

requestPOST /v1/filings

POST /v1/filings

{
  "form": "1099-NEC",
  "tax_year": 2026,
  "payer": { ... },
  "recipients": [ ... ]
}

response201 Created

{
  "id": "fil_8f31a",
  "status": "ready"
}

Not another tax filing dashboard.

Traditional tax filing software

User-facing tax workflows
Manual filing experience
Form-centric
Built for individual businesses

IrisTaxFiling

API-first
Embedded into existing software
Data-centric
Built for software companies
High-volume workflows
Filing lifecycle control
Developer-first

FIRE to IRIS

FIRE is changing. Your infrastructure has to change with it.

The IRS is transitioning information-return filing from the legacy FIRE system to IRIS. For software companies that have built or depend on filing infrastructure, this creates a significant migration and integration requirement.

Prepare your filing stack for IRIS

Move from legacy filing workflows without rebuilding everything.

Keep your existing data model. Let IrisTaxFiling handle the translation, validation, and filing workflow.

Legacy data: CSV / FIRE / internal system
IrisTaxFiling
Normalize
Validate
IRIS-ready
Submit

Developer experience

Five minutes to your first filing workflow.

Create API key
Send sample filing
Validate
Review
Submit

Read the API documentation View pricing

curl https://api.iristaxfiling.com/v1/filings \
  -H "Authorization: Bearer $IRISTAXFILING_KEY" \
  -H "Idempotency-Key: 2026-nec-0001" \
  -d @filing.json

const res = await fetch("https://api.iristaxfiling.com/v1/filings", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.IRISTAXFILING_KEY}`,
    "Idempotency-Key": "2026-nec-0001",
    "Content-Type": "application/json",
  },
  body: JSON.stringify(filing),
});
const { id, status } = await res.json();

import os, requests

r = requests.post(
    "https://api.iristaxfiling.com/v1/filings",
    headers={
        "Authorization": f"Bearer {os.environ['IRISTAXFILING_KEY']}",
        "Idempotency-Key": "2026-nec-0001",
    },
    json=filing,
)
print(r.json()["status"])

using var http = new HttpClient();
http.DefaultRequestHeaders.Add("Authorization",
    $"Bearer {Environment.GetEnvironmentVariable("IRISTAXFILING_KEY")}");
http.DefaultRequestHeaders.Add("Idempotency-Key", "2026-nec-0001");

var res = await http.PostAsJsonAsync(
    "https://api.iristaxfiling.com/v1/filings", filing);

Examples use plain HTTP. Official SDKs are planned.

Your system stays in control.

Webhooks report every state change, so your product never has to poll.

filing.createdfiling.validatedfiling.readyfiling.submittedfiling.acceptedfiling.rejectedcorrection.requiredfiling.corrected

Reliability

Built for filing deadlines.

Idempotent submissions

Safe to retry without duplicate filings.

Durable queues

Submissions survive restarts and spikes.

Retry handling

Transient failures are retried, not dropped.

Submission state tracking

Every filing has an explicit, queryable state.

Acknowledgement storage

IRS responses are kept with the filing.

Correction workflows

Corrections follow the original filing.

Audit trails

Filing and administrative actions are recorded.

Operational alerts

Know about stuck or rejected filings early.

Security

Security designed for sensitive tax data.

Encryption

In transit and at rest.

Role-based access

Least-privilege access to data and systems.

Audit logging

Track filing and administrative actions.

Production/test separation

Separate sandbox and production environments.

Key management

Credentials are not embedded in application code.

Data retention controls

Control how long filing data is kept.

Compliance requirements vary by data source, customer role, and filing workflow. IrisTaxFiling does not provide legal or tax advice.

Built for software that generates tax data.

$Payroll platforms
Add information-return filing without building IRS infrastructure.

⇄Marketplaces
Handle high-volume recipient reporting.

≡Accounting platforms
Embed filing directly into your workflow.

◇Contractor platforms
Turn payment data into filing-ready returns.

⌂Property management
Automate recurring information-return workflows.

¤ERP / Finance SaaS
Keep tax filing inside your existing product.

Pricing

API pricing that scales with filing volume.

Developer

$199/month

For development and early integrations.

Sandbox
API access
Validation
Documentation

Start building

Business

$999/month

For production SaaS platforms.

Production API
Webhooks
Corrections
Audit trail

Talk to us

Enterprise

Custom

For high-volume filing infrastructure.

High-volume filing
Enterprise controls
Dedicated support

Talk to us

Usage-based filing volume is a secondary pricing dimension. Prices are illustrative and not final.

Built for the infrastructure problem behind information returns.

API-firstIRIS-ready architectureValidation engineEvent-driven workflowAuditability

Early access

We’re in demo. Registrations are welcome.

IrisTaxFiling is a working demo in test mode: filings run against a simulator, not the IRS. Tell us what you want to file and we’ll get in touch.

Build your product. Let IrisTaxFiling handle the filing infrastructure.

Connect your existing tax data to a developer-first filing workflow.

hello@iristaxfiling.com