Abacus
The books that explain themselves.
Abacus is a full double-entry accounting system for small and growing businesses: invoicing, bills, banking, inventory, multi-currency, a built-in register, and native digital-asset accounting. Every number can be questioned in plain English, and every answer ties back to the ledger to the penny.
A Jackson-Goos product · Built and maintained by Goos Labs

The real product, running.



Small-business accounting software hasn't fundamentally changed in twenty years. It's slow, layered with add-ons, and still needs a bookkeeper to translate it. Crypto, multi-entity books and AI questions all mean another bolt-on subscription. Owners still can't ask their books a simple question and get a straight answer.
From first step to done.
Set up in minutes
Create a company, pick a chart of accounts, and import transactions, or start fresh.
Work in plain English
Type “paid $240 to Home Depot for lumber, Visa” and Abacus drafts the balanced entry for you to confirm.
Run the business
Invoices, payments, bills, the register, inventory and bank activity all post to one double-entry ledger.
Close with confidence
Trial balance, P&L, balance sheet, general ledger and a tax pack, always in balance, always explainable.
What Abacus does.
True double-entry engine
Every balance and report derives from transaction lines. An unbalanced entry can't be saved.
Natural-language entry
Describe a transaction in plain words and Abacus proposes the journal entry for you to confirm.
Invoices to cash
Invoices, payments, delayed charges, batch entry and customer statements.
Built-in register
A light point of sale that posts sales and tax straight to the books.
Inventory with lots
Lot-tracked inventory with cost flowing correctly to cost of goods sold.
Multi-currency
Foreign-currency transactions with proper revaluation.
Multi-company
Run several entities from one login and switch between them instantly.
General ledger and tax pack
Accountant-ready ledgers and year-end packages.
Command palette
Press ⌘K to reach any report, record or action in two keystrokes.
The first small-business ledger that treats crypto correctly from day one.
Crypto is property. Every acquisition creates a tax lot, every disposal realizes a gain or loss, and businesses must now report holdings at fair value. Abacus does all three natively. A business holding BTC or getting paid in USDC doesn't need a $300-a-month bolt-on.
- Cost-basis lots per asset and wallet
- Realized and unrealized gain and loss accounts generated automatically
- ASU 2023-08 fair-value marking
- Pluggable price oracle
Accounting as a building block.
Abacus has a partner API, so other products can read and write real books. Continua's office dashboard already shows a live P&L powered by Abacus, and every SaaS product Goos Labs builds can do the same.
- Partner API with scoped keys
- Live P&L card inside Continua
- One accounting core shared across the portfolio
An AI CFO that can't make the numbers up.
Ask why margin dropped, what's overdue, or what you'll owe this quarter. The assistant answers from the ledger, and the ledger only. If an entry doesn't balance, it doesn't exist.
- Plain-English questions over real books
- Drafted entries always need your confirmation
- Explanations link to the underlying transactions
Built for
Owned by Jackson-Goos. Built and maintained by Goos Labs.
Trust & security
- Local-first and fast, with cloud sync
- Company data isolated per tenant
- Unbalanced entries rejected by the engine
Works with the portfolio.
Frequently asked.
Can Abacus replace QuickBooks?
That's the goal. It covers the core and advanced accounting features small businesses rely on, plus native crypto, a built-in register and an AI layer.
Does it handle crypto taxes?
Abacus tracks cost-basis lots and realized and unrealized gains, and supports fair-value reporting. Your accountant gets clean numbers.
Accounting, rebuilt AI-first.
See Abacus for yourself, or talk to us about your team.