X.TAX Business Tax

Spec sheet

What it does

X.TAX provides online federal and state business tax e-filing services.Read 1 Oct 2026 · x.tax

API

The developer platform offers an API for embedding Forms 1065, 1120, 1120-S, 7004, and 4868 filing into products.Read 1 Oct 2026 · developer.x.tax

Security

The privacy policy says data is stored in the United States with encryption, access controls, secure servers, and regular security assessments.Read 1 Oct 2026 · x.tax

Support

Support is available by email at [email protected], with listed business hours Monday through Friday, 8AM to 6PM CST.Read 1 Oct 2026 · x.tax

Headquarters

Austin, Texas, United StatesRead 28 Sep 2026 · x.tax

Accounting integrations

X.TAX integrates with QuickBooks and Xero to import financial data such as income, expenses, and balance-sheet information.Read 1 Oct 2026 · x.tax

AI validation

AI-driven validation checks reduce errors and flag missing or inconsistent information before filing.Read 1 Oct 2026 · x.tax

API security

The developer platform states that its infrastructure uses AES-256 encryption at rest, TLS 1.3 in transit, and SOC 2 Type II certified infrastructure.Read 1 Oct 2026 · developer.x.tax

Audit protection

Audit Protection covers IRS and state audits throughout the tax year.Read 1 Oct 2026 · x.tax

Automation

Automated workflows manage calculations, form mapping, and validation.Read 1 Oct 2026 · x.tax

Expert help

Users can access CPAs and Enrolled Agents for questions, reviews, or assisted filing.Read 1 Oct 2026 · x.tax

Free start

The homepage says users can start for free and pay only when ready to file.Read 1 Oct 2026 · x.tax

IRS authorization

X.TAX describes itself as an IRS-authorized e-filing platform.Read 1 Oct 2026 · x.tax

Risk monitoring

RiskScore highlights potential IRS issues before they result in penalties.Read 1 Oct 2026 · x.tax

Supported entities

The platform supports LLCs, partnerships, S corporations, and C corporations.Read 1 Oct 2026 · x.tax

Supported forms

X.TAX supports Forms 1065, 1120-S, 1120, and 1041.Read 1 Oct 2026 · x.tax

Plans and prices

Every X.TAX Business Tax plan and price →

Where Specifiction places it

• Small Business Tax Software#18 of 307.5