STS
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The AI Agent for tax pros
The first and only AI native tax engine that completes full 1040 returns end-to-end. Reliably.
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Watch how it works
Trusted by firms that refuse to waste another season
Acute
Acute
Acute
Acute
Acute
Acute
Acute
Acute
Set up in just 1 day.
No IT, no workflows.
Connect to your Tax Software
Your documents are organized so you see everything clearly without the clutter.
Upload Client Documents
Every update flows instantly across your firm and keeps collaboration effortless.
Team updates flow seamlessly
Hi everyone
How about this instead?
Review AI-Generated Returns
All your favorite tools connect in one place and work together by design.
File with Confidence
Track returns with precision and turn raw data into confident decisions.
Review every return with AI
by your side.
AI AskSTS
⚡ Tools
+
⚡ Configure
AI Ask
Get instant answers on IRS rules, tax code, and your firm's procedures.
"We used to hire 6 seasonal staff. This year we hired 2, and they're doing higher-value work."
Managing Partner
Regional Tax Firm
Plans & Pricing
Pricing that makes sense for your firm
Pay for what you use. No long-term contracts.
ROI visible in your first week.
ROI visible in your first week.
Starter
For solo practitioners ready to stop doing data entry.
$0
per month
Start for free
25 returns/month
W-2, 1099 extraction
Basic 1040
Email support
Professional
For growing firms that want to scale without scaling headcount.
$29
per return
Get started
Unlimited returns
K-1 and K-3 support
All schedules
Priority support
Tax software integrations
Team collaboration
Enterprise
For large practices that need custom workflows and dedicated support.
Custom
contact us
Talk to sales
Everything in Professional
Dedicated account manager
Custom integrations
On-site training
SSO & advanced security
SLA guarantees
Frequently Asked Questions
Get answers before you commit.
No surprises, no fine print.
No surprises, no fine print.
Yes. Firms report 50-70% reduction in prep time per return. K-1 returns that took 4 hours now take 40 minutes. Most teams see ROI in the first week.
Extremely. Our AI cross-checks every extracted field against the source document and flags discrepancies. Your team catches errors before review, not during.
Yes. STS integrates with Drake, Lacerte, ProConnect, UltraTax, and others. No rip and replace—it fits into your existing workflow.
Every calculation is explainable. Your team can ask "why this number?" and get a clear answer. You stay in control, always.
Absolutely. SOC 2 Type II certified, AES-256 encryption, and we never train on your data. Your clients' information stays yours.
Most firms are processing returns within 24 hours. Upload documents, see results in minutes. No engineers, no complex setup.
Ready for a stress-free tax season?
Join tax firms that stopped dreading busy season
and started scaling without the burnout.
and started scaling without the burnout.
Talk to a founder
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