Your Complete AI
Sales Tax Partner
Automate your sales tax filings and registrations with Sigma Files. Our AI system uses advance technology to handle filings and registrations in any state of US.
Trusted by over 7500 businesses in US
Our Services
US SALES TAX FILING
- ✔ Rapid AI processing in first week of month
- ✔ Precise compliance with maximum deductions
- ✘ No manual entry & no human involvement
- ✘ No over spending, just pay $30 per filing
US SALES TAX REGISTRATION
- ✔ AI enabled registration with short questionnaire
- ✔ All 50 U.S. states supported
- ✘ No Lengthy manual paperwork & forms
- ✘ No over spending , just pay $40 per state registration
The Sigma Files Process
We provide a secure, step-by-step journey to ensure your tax returns are filed accurately and efficiently across all states.
01
Secure Document Upload
Upload your W-2s, 1099s, and bank statements directly to our encrypted portal using our secure, multi-factor authentication system.
02
Automated Compliance Check
Our AI-driven engine cross-references your data against IRS regulations and state-specific requirements to identify all eligible deductions.
03
Multi-State Filing
Instantly generate and submit your tax returns to all relevant state agencies, ensuring compliance across every jurisdiction you operate in.
04
Online Payment & Confirmation
Complete your payments securely through our integrated payment gateway and receive instant confirmation of your filing status.
What Our Clients Say
"Sigma Files made our multi-state tax filing incredibly stress-free. Their attention to detail is unmatched."
Sarah Jenkins, Small Business Owner
"As a freelancer, I needed a reliable way to handle my deductions. Sigma Files has been my go-to for years."
David Miller, Freelance Designer
"Professional, transparent, and fast. They handled our complex IRS compliance requirements perfectly."
Elena Rodriguez, Accountant
Real-Time Tax Insights
- Track filings for all states & periods
- Access copies of filed tax returns
- Register for new states with AI help
- Multi-state compliance overview