File a return that survives an audit.
No CPA required.
Signal reads your facts, applies the tax code and Treasury regs to your situation, and shows you — line by line — why every number on your return is defensible. If anything is a close call, we tell you exactly what would make it airtight.
Not opinion. Not “our algorithm.” Every position cites the specific IRC section, Treasury regulation, Revenue Procedure, or IRS publication that supports it.
A traffic-light summary of every position on your return. Click a yellow or red item and we show you the exact steps that would move it to green.
Identity fields are stripped at the edge before anything reaches our servers. The tax engine sees amounts and dates, not names and addresses.
How it works
Three steps. No commitment, no credit card.
Upload
Upload what you already have — W-2, 1099-B transactions, deduction records. Structured formats today; document upload as we expand.
Review
Review your return with every position scored green / yellow / red / black. For anything that isn’t green, we show the exact conditions that would move it to green, the authority we’d rely on, and whether a disclosure form is required.
File with confidence
File — or hand the audit packet (our full authority + trace output) to a human reviewer if your situation warrants it. Either way, the paper trail is already built.
The big-box tools fill in the form. They don’t tell you why a position is defensible, what would break it under audit, or what you’d have to do to move a red position to green. Signal does all three.
CPAs are expensive, slow, and their answers aren’t reproducible across two preparers. Signal is deterministic — two runs on the same facts produce the same return and the same audit packet. When a specialist is what you need, Signal tells you that explicitly and hands the reviewer a packet that makes their job minutes, not hours.
What’s supported today
We ship source-gated: a lane is supported only when its statutory corpus is fully loaded and tested. If your situation isn’t covered, you’ll know before you spend time.
See a sample scored returnFree during alpha
Signal is in alpha. The scoring engine, the audit packet, and the encrypted vault are free to use against the lanes we currently support. We will only put a price on what the product actually delivers — not on features that are still on the roadmap.
Start a free review