Open early-access ledger

Be first to balance your books with Brass.

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App 86 · 100 Apps 100 Hours

Your books, quietly done.

Brass is an AI bookkeeper that turns your raw transactions into clean, tax-ready books. It categorizes every charge with a confidence score, flags the anomalies, and finds the deductions you’re leaving on the table — no accountant required.

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Watch the demo
General Ledger · Q2 2025
Hollis & Vane LLC
$8,400.00
Amazon Web ServicesDup
($312.45)
The Anchor SteakhouseUnusual
($1,284.60)
Linden & Co.
$3,150.00
Inside the app

Five screens. Books done.

From the ledger to the audit scan to a clean P&L — swipe through the workflow your accountant wishes they had.

9:41Brass100%

General Ledger

Books

Hollis & Vane
$8,400.00
AWS
($312.45)
Figma Inc.
($90.00)
Sequoia Payroll
($11,250.00)
The Anchor
($1,284.60)
Linden & Co.
$3,150.00
Adobe
($59.99)
Net$2,140.51

Books the general ledger

The walkthrough

See it close the month

A 90-second tour from receipt snap to a balanced, tax-ready ledger.

What Brass does

Clean books, without the busywork

Every charge categorized, every anomaly caught, every deduction surfaced — in a ledger that reads beautifully.

AI auto-categorization

Every charge is sorted with a confidence score. Low-confidence rows are flagged for a glance, so you only touch the ones that matter.

Anomaly detection

Duplicate charges, missing receipts, and unusual spend vs. your baseline get caught automatically — like the AWS bill that hit twice.

Deduction finder

Home office, software, travel, Section 179 — toggle each deduction on and watch your estimated tax liability recompute live.

One-tap audit scan

A phased review returns prioritized findings — high, medium, low — each with plain-English fix guidance before you file.

P&L reports

A profit ring and category breakdown bars turn a quarter of transactions into a story you can actually read.

Receipt capture

Snap a receipt and Brass extracts the vendor, amount, and category — and matches it to the right ledger row.

On the roadmap

The bookkeeper that does more every quarter

Today Brass runs on tuned categorization and audit heuristics. Next: live bank sync, an agent that files for you, and a CPA in your pocket.

Live bank sync

Connect accounts and Brass posts and categorizes transactions the moment they clear — no imports.

Planned

Agentic filing

An agent assembles your return, drafts quarterly estimates, and queues forms for a one-tap submit.

Planned

Cash-flow forecasts

Brass projects runway and tax-set-aside needs weeks ahead, so a payroll run never catches you short.

Planned

Deadline copilot

Estimated-payment dates, 1099 thresholds, and W-9 collection nudges surfaced before they become penalties.

Planned
Follow the build

Watch the ledger get built

Brass is app #86 in the 100 Apps 100 Hours sprint. Every screen recorded and shipped — follow along for daily drops, build notes, and early looks.

Doing your own books at 11pm?

Join the waitlist and be the first to hand them to Brass.

Books that balance themselves.

Join the waitlist for early access, launch updates, and a head start on the cleanest books you’ve ever filed.

Book a Call

No spam. Unsubscribe any time. Prefer to talk? Grab a 30-minute slot.