IRS-authorized e-file infrastructure

The tax filing engine other tax products are built on.

Calculate, generate, and e-file federal returns for individuals and businesses. Calculate, generate, and e-file state returns for individuals. Connect in a few calls instead of building a tax engine from scratch.

Request API access See the three options →
Federal + all states Individual & business Bank-grade encryption IRS-authorized since 1995
1995IRS-authorized since
All states+ federal
Individual& business returns
Sandboxfree to build
FintechsBanksPayroll platformsTax startupsGovernment agencies

Built for developers

See it in code, then go live

Start free in the sandbox, validate against the real engine, and flip to production when you are ready.

01

Get sandbox keys

Request access and build against the full calculation and e-file engine at no cost.

02

Validate your returns

Run individual and business returns across federal and all states before you go live.

03

Ship to production

Transmit real returns to the IRS and state agencies with support hours included.

Three ways to build

One tax engine. Three levels of control.

Every option runs on the same IRS-authorized calculation and e-file engine. What changes is how much of the experience you build and how much we deliver for you.

01 / API

The tax API

For teams building their own interface

Direct access to the engine. Send us the inputs, get back calculations, completed tax forms, and e-file transmissions to the IRS and state agencies. Use it as a stateful, interview-driven flow, or as a stateless calculation and e-file service.

You build
Every screen and your product logic
We provide
Tax calculation, forms, e-file, status
02 / Embedded

Embedded filing software

For apps that want filing inside their product

The filing experience lives inside your existing application so your users never leave it. You control the look and the journey while we power the calculation, forms, and e-file behind it.

You build
The surrounding app and look
We provide
The embedded filing flow and backend
03 / White label

White-label filing

For partners who want to launch fast

A complete, ready-to-run filing product delivered under your brand, hosted and maintained by FileYourTaxes.com, with little development required on your side.

You build
Little to nothing
We provide
The full product, hosting, and upkeep

Why the engine matters

The hard part is not the interface. It is clearing the IRS.

Newer tax APIs put a modern layer on top of the tax problem. The layer is the easy part. What takes decades is an engine that calculates correctly and clears the IRS and every state agency, season after season.

Proven, not promised

Already authorized

An IRS-authorized e-file provider transmitting real returns now, not a platform working toward approval.

Individual + business

Full form coverage

The 1040 series and business returns including 1120, 1120S, 1065, 941, W-2, and 1099. Most consumer-only APIs stop at the 1040.

Deploy your way

Flexible deployment

Multi-tenant, dedicated, or customer-controlled deployment options to fit enterprise and partner requirements.

Explain it simply

The three options, in one line each

Same engine every time. The only question is how much you build and how much we deliver.

API

You build the app, we do the taxes

You design every screen and control the experience. We calculate the return and e-file it to the IRS and the state agencies.

Most control, most to build.

Embedded

Filing runs inside your app

We place a ready-made filing flow inside your product so your users never leave it. You keep the look; we power the calculation, forms, and e-file.

Your experience, our engine.

White label

We hand you the whole product

A complete filing product under your brand, built, hosted, and maintained by us, with little development on your side.

Fastest to launch, least to build.

Security & compliance

Built for the environments that handle taxpayer data

IRS-authorized e-file

An IRS-authorized e-file provider transmitting real returns to the IRS and state agencies every filing season.

Encrypted end to end

Taxpayer data is encrypted in transit and at rest and handled under strict access controls.

Dedicated deployment options

Multi-tenant, dedicated, or customer-controlled deployment to fit your security requirements.

Built and supported in the USA

A U.S.-based, family-owned company. Your data is never sold.

IRS-authorized e-fileBank-grade encryptionData never soldU.S.-basedDedicated deployment

How pricing works

Transparent model. Figures shared in your review.

You always know how you are charged before you commit.

STEP 01

Free sandbox

Build and validate against the engine at no cost.

STEP 02

Annual platform fee

A flat fee for your level of access to production.

STEP 03

Per-return fee

A processing fee on live returns you file.

STEP 04

Volume commitment

An annual commitment sized to your forecast.

Support hours are included at each paid level. Exact figures are shared in a technical and business review. Ask for a quote and we will walk you through the numbers in a working session.

Request a quote

Questions partners ask

Frequently asked questions

What is the FileYourTaxes.com tax API?
It is a set of services that calculate tax returns, generate completed tax forms, and electronically file returns with the IRS and state revenue agencies. Partners connect to it instead of building and maintaining their own tax engine. It supports both individual Form 1040 series returns and business returns.
How is this different from newer embedded tax APIs?
We are the established filing engine. We have been an IRS-authorized e-file provider for years and support both individual and business returns, including Forms W-2, 1099, 941, 1120, 1120S, and 1065. Many newer API-first entrants focus on consumer 1040 filing only. We are a proven, family-owned company built and supported in the United States, with dedicated deployment options for partners that need them.
What is the difference between the API, embedded software, and white label?
All three run on the same engine. With the API, you build your own interface and we handle calculation and filing. With embedded software, filing lives inside your existing app so your users never leave it, and you control the look while we power the backend. With white label, we deliver a complete filing product under your brand with little development on your side. See the plain-English explanation.
Do you support business tax returns, or only individual filers?
Both. The engine handles the full individual 1040 series and common business filings including Forms W-2, 1099, 941, 1120, 1120S, and 1065. This is a meaningful difference from consumer-only tax APIs.
Which states do you support?
Federal returns and all states. You can validate multi-state filing workflows in the sandbox before going live.
Is FileYourTaxes.com an authorized IRS e-file provider?
Yes. We are an IRS-authorized e-file provider and transmit real returns to the IRS and state revenue agencies every filing season.
How does pricing work?
You start with free sandbox access. As you move toward production, you pay a flat annual platform fee for your level of access plus a per-return processing fee on live returns, with an annual volume commitment sized to your forecast. Support hours are included at each paid level. Exact figures are shared in a technical and business review.
How secure is the platform?
Taxpayer data is encrypted in transit and at rest, and we are an IRS-authorized e-file provider handling real returns every season. Dedicated and customer-controlled deployment options are available for partners with stricter requirements.

Build on an engine that already clears the IRS.

Start in the free sandbox, then talk to us about production. We will walk you through access, deployment, and the numbers.

Request API access
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