Every number on your tax return, legally cited.

CirclesTax links every calculation to its IRS legal authority — IRC sections, Publications, Form Instructions. See exactly WHY every number appears on your return.

Built for audit confidence

Citation Chain

Every calculated line links to its IRC section, Revenue Procedure, or IRS Publication. No black boxes.

Version-Tracked Rules

We host our own copies of every IRS rule, versioned by tax year. Your 2025 return always cites 2025 rules, even years later.

Audit Defense Report

Generate a comprehensive PDF with every tax position, its legal basis, risk level, and supporting documentation.

Risk Assessment

Each position is rated conservative, moderate, or aggressive. Know your audit exposure before you file.

Form 1040 + 1120-S

Individual returns with Schedules A through SE, plus S-Corporation returns with K-1 generation.

Document Vault

Upload W-2s, 1099s, and receipts. Link them directly to the line items they support.

Simple pricing

Free

Try it out

$0
  • 1 tax return per year
  • Form 1040 only
  • Basic citation trail
  • PDF generation

Basic

For individuals

$29/year
  • 3 tax returns per year
  • Form 1040 + all schedules
  • Full citation chain
  • Audit defense report
  • Document vault (50MB)

Professional

For preparers

$79/year
  • Unlimited returns
  • 1040 + 1120-S + K-1
  • Full citation chain
  • Audit defense report
  • Document vault (500MB)
  • Client management