Backed bya16z Speedrun

Automated Monthly Bookkeeping
for Accounting Firms

An agentic back office that does the legwork. Your team stays in charge.

QuantoBooks connects to every client's QuickBooks, runs the full period review and turns what it finds into a prioritized checklist with the fixes already drafted. Your bookkeepers review and approve instead of re-checking, so the firm takes on more and the team gets its month back.

Works on live QuickBooks Online data
Your team approves every write-back
Built for bookkeepers, not around them

QuantoBooks on a demo client's August, from Generate to the checklist to Investigate.

The Playbook

The weekly edge for accounting firms

One email a week on how we build QuantoBooks, what we learn from firms running it, and practical notes on closing the month with an agent in the loop.

One email a week. Unsubscribe any time.

The Problem

The Month-End Grind
Is Eating Your Firm.

Every client, every month: pull the reports, scan for what looks off, chase the ledger, fix it, document it. The work is repeatable. The people doing it are not.

The Same Review, Fifty Times

Senior staff re-check the same balance sheet lines, the same vendor lists and the same bank feeds for every client, because sampling is the only way to get through them all.

Problems Surface Late

A duplicated deposit or a miscoded asset purchase sits in the books until a reconciliation breaks or the tax return asks the question. By then it is three months of unwinding.

Growth Means Overtime

Each new client adds hours of the same careful review. Advisory, the work clients value most and your team enjoys most, gets whatever is left of the calendar.

How It Works

A Month-End That Runs Itself.
Almost.

QuantoBooks does the reviewing, the digging and the drafting. Your bookkeepers keep the judgment calls and the approvals. That is the whole design.

  1. Step 01

    Generate

    One click runs every review for the period

    Chart of accounts first, then the general ledger, balance sheet and P&L in parallel, and vendors once the ledger is ready. Every review reads the client's live QuickBooks data.

    • Chart of Accounts review
    • General Ledger review
    • Balance Sheet review
    • Profit & Loss review
    • Vendor review
  2. Step 02

    Checklist

    Every finding becomes an action item

    Negative balances, duplicate transactions, likely misclassifications, accounts missing a reconciliation, first-time vendors. Each one is flagged with its reasoning and ranked critical to low, so the team starts with what matters.

    • Priorities from your firm's flag definitions
    • Thresholds and snoozes you control
    • Comments and review status per item
  3. Step 03

    Investigate & fix

    The agent does the digging. Your team approves the fix.

    Click Investigate on any flag and Quanto reads the balance sheet, the ledger and the QuickBooks records behind it, then writes up the root cause, the impact and the fix. Suggested recodes and bank-feed categorizations post to QuickBooks once a reviewer approves them.

    • Root cause, impact and fix, written out
    • Batch-apply approved suggestions to QuickBooks
    • Receipts and statements extracted into a review queue
  4. Step 04

    Review & close

    Close the period with the trail intact

    Submit the period for review, approve it, and close the books. Every flag, decision and write-back stays on the record for the next person who opens the client.

    • Preparer and reviewer roles
    • Period-by-period history
    • Notifications when something needs a human

See It Work

The Product, Not the Pitch

Two real workflows on a demo client, exactly as they run in the app.

Generate

Every review for the period, in the right order

Open a client's month and click Generate. QuantoBooks runs the chart of accounts review first, then the general ledger, balance sheet and P&L in parallel, waits on the ledger before reviewing vendors, and rolls every finding into one prioritized checklist.

  • Runs against the client's live QuickBooks Online data
  • Dependencies handled: vendors wait for the ledger
  • Findings land as action items, critical to low

Investigate

A flag tells you what looks off. Investigate tells you why.

Click Investigate on any flag and Quanto opens a chat about it, reads the balance sheet, the general ledger and the QuickBooks deposits and payments behind it, and writes up the root cause, the impact and the fix. Ask follow-ups in the same thread.

  • On flags across the Balance Sheet, P&L, Chart of Accounts and Vendor reviews
  • Root cause, impact and recommended resolution, written out
  • Read-only: nothing is posted to QuickBooks

Features

Everything the Close Needs. Nothing It Doesn't.

Built around how a bookkeeping team actually works a period, not a bolt-on to a CRM or a spreadsheet of rules.

Period reviews

Chart of accounts, general ledger, balance sheet, P&L and vendor reviews on every client's live QuickBooks data, run together with one click.

Flags and the checklist

Findings ranked critical to low with their reasoning attached. Flag definitions, thresholds and snoozes are yours to tune per firm and per client.

Investigate with Quanto

A chat that reads the books. Ask about any flag or any number and get the root cause, the impact and the fix, with the ledger lines to back it up.

Bank feed reconciliation

Pending For Review transactions get categorized the way a reviewer would: a rules pass clears the obvious, the agent judges the rest, and approved rows apply straight into QuickBooks.

QuantoBooks in Claude

An MCP server and a library of skills so your team can run a month-end close, triage flags or prep 1099s from Claude, with every write confirmed first.

Client portal and documents

Clients connect their QuickBooks and share receipts, bills and statements in one place. Lines are extracted into a review queue and posted to QuickBooks once your team approves.

Why Firms Switch

Automation That Backs Your Team, Not Replaces It

Bookkeeping is the work that pays the bills and eats the calendar. QuantoBooks takes the repeatable part off your people's plates and leaves them the judgment, the client relationship and the advisory work the firm grows on.

For the firm

Grow the client list without growing the overtime

The reviews, the first pass at every anomaly and the drafting of fixes are done before anyone on your team opens the client. Each bookkeeper can carry more clients at the same standard of care.

For your team

Every bookkeeper works with a tireless assistant

Every flag arrives with its reasoning written out and a recommended fix. New staff learn the why alongside the what, and experienced reviewers approve a checklist instead of rebuilding one by hand.

For your clients

Advisory time, because the books are already done

When the month closes on time with the questions already answered, the conversation with the client moves from “what happened” to “what next”.

Integrations

QuickBooks at the Center. Your Tools Around It.

QuantoBooks reviews the books in QuickBooks Online and fits alongside the systems your firm already runs on. Nothing to migrate, nothing to rip out.

QB
QuickBooks Online
GD
Google Drive
N
Notion
K
Karbon
G
Gusto
S
Stripe
C
Claude (MCP + skills)

Your team can also run QuantoBooks from Claude through our MCP server and skills library. Every write is confirmed before it posts.

Also from Quanto

Need more clients, not just cleaner books?

QuantoGrowth is the sales and marketing partner for accounting firms: ideal-client profiles, personalized outreach, booked calls, and engaging content written in your voice.

Visit QuantoGrowth

Common
Questions

Everything you need to know about running your firm's bookkeeping on QuantoBooks.