Samples
See the work before you enquire
Public samples of each service, built on a fictional return and on the same models we use for client work.
Return walkthrough
The method behind return walkthroughs, on a fictional 2025 return.
Sample walkthrough
Form 1040 unfolded line by line, down to the W-2s, schedules and forms behind each figure.
Open the sample →Return flow map
The same return drawn as a path: every figure traced from its document to the line it lands on.
Trace the return →How it works
How the walkthrough reads a return, the checks it runs between forms, and what it cannot tell you.
Read the method →Explorable memo
The models behind the work
Each documents its assumptions and cites its sources on the page.
Comprehensive Tax Calculation
Why capital gains stack on top of ordinary income, and what each slice pays.
Open the tool →QBI Deduction
The 20% deduction, the wage-and-property limit, and the phase-out for service businesses.
Open the tool →All tools
Every public model, from bracket mechanics to the home-sale exclusion.
Browse the tools →Want this for a real client?
Each sample here is one engagement away from being about your client.