Try it → change a blue cell; the totals and the K-1 split recalculate.
Oakline Supply LLC — Book to Tax (M-1).xlsx
fx=B6+SUM(B8:B10)
Net income (loss) per books
Schedule M-1 adjustments
Meals — 50% nondeductible2,315.40
Credit card rewards (nontaxable)(12,840.75)
Asset sale → Form 4797(54,300.00)
Ordinary business income (tax)122,624.85
Schedule K-1 allocationPartner APartner B
Ownership %40
Ordinary income (K-1 line 1)73,574.9149,049.94
Allocation checkties ✓
Book to Tax (M-1)Schedule K-1Profit and LossAJE Worksheet
Live formulas in every totalReads scanned PDFs1040 · 1065 · 1120-S · 1120Per-partner K-1QuickBooks · Xero
The return workflow
Three stations. One return, start to finish.
The core of RAG Tax AI mirrors how an engagement already moves through your firm — and the AI carries the load at each station.
01
Preparation
financials → workpaper
Drop in the P&L, balance sheet, prior workpapers, W-2s and 1099s — phone-scanned PDFs included; the AI reads them visually.
Book-to-tax reconciliation built on fixed, deterministic treatment rules
Every total a live formula — edit one number, the whole workbook reflows
Data-entry guide for your tax software, field by field, with live tie-outs
02
Review
return → second opinion
Upload the finished return with its support and get the read a senior reviewer would give it before signature.
Return lines tied out against the source financials
Findings ranked by risk, each with the authority behind it
A filing-readiness verdict and the open-question list
03
Deliverable
work → client-ready
Turn the reviewed engagement into something a client can actually read and act on.
Plain-language summaries of what was filed and why
Consistent, firm-branded document output
Ready to send — once your professional signs off
Beyond the return
A full toolbox for the rest of the practice.
The return workflow is the spine. Around it sit the tools a firm reaches for every week.
Planning
Estimated Taxes
Quarterly safe-harbor estimates computed from current-year books and prior returns, with the payment schedule ready to send.
Planning
Tax Planning
Scenario projections on a deterministic tax engine — the math is code, not guesswork.
Compliance
Notices
Upload an IRS or state notice; get the analysis plus a response letter drafted on firm letterhead.
Tax Tracker every engagement on one board, with deadlines by entity type
Tax Research answers grounded in current federal and state guidance
Diagnostics e-file error analysis with a step-by-step fix guide
Client Database clients, years and documents, isolated per firm
Presentations turn an engagement into a clean client-meeting deck
Misc Calculations the one-off computations, documented in Excel
Professional responsibility
Designed around one line: your firm signs the return.
AI drafts. Professionals decide. The software enforces that boundary instead of blurring it.
Control
How it works
Flags, not guesses
Anything uncertain is marked for review or left blank with an explanation — never silently invented.
✓
Traceable numbers
Each amount links back to its source line, and tie-outs recompute the moment a preparer edits the workpaper.
✓
Firm-level isolation
Your data is visible only to your firm's users. Hashed credentials, encrypted integration tokens, daily backups.
✓
Originals untouched
Client reports are carried into the workbook verbatim on their own tabs — the source always sits beside the work.
✓
RAG Tax AI was built inside a working U.S. tax practice. Every feature exists because a preparer needed it during a real season — not because it demoed well.
See it on your own returns.
We onboard a small number of firms at a time so every pilot gets direct support. Bring one real engagement and we'll walk it through the workflow with you.