Deduction alerts
Onyx sends you monthly reminders about tax deductions you may be missing. Home office, mileage, meals, equipment, and more. Small business owners leave thousands on the table every year.
OnyxAutomate 97% of your bookkeeping instantly with self-learning AI
Automatic reconciliation, CPA-ready income statements, and deduction reminders.
Zero spreadsheets.
Quit cramming at tax time. Onyx automates your books.
Built for business owners who hate tax season.
Done-for-you income statements
Get a done-for-you income statement with the click of a button at tax time. Hand it straight to your accountant to cut the back and forth.
Unlimited 256-bit encrypted connections
Connect as many business accounts and cards as you use, all for one flat fee. Every connection is protected with 256-bit encryption through Plaid, the world's #1 bank integration software.
Everything in one place
Onyx connects all of your business accounts so every transaction lives in one place, live updating. No more manually calculating your revenue, expenses and profit.
Automatic reconciliation & categorization
Onyx categorizes your transactions automatically. Confirm the few it flags each month, and it learns your preferences. Gets smarter the more you use it.
How it works:
Connect Instantly
Link unlimited business bank accounts and cards via Plaid. Takes about 60 seconds.
Let Onyx Work
Onyx categorizes 95% of transactions automatically. Confirm the few it flags, and it gets smarter. Usually fewer than 5 a month.
Send to CPA
At any time, download your done-for-you CPA-ready income statement with one click and hand it straight to your accountant.
Small business books, organized automatically.
“I hated bookkeeping so much I refused to do it until tax season. That made me hate it even more. Onyx made my life 10x easier. It's amazing. Give it a try!”
Ryan M.
Consultant
“There are two things I hate about bookkeeping. The first is organizing a bunch of transactions manually and the second is the back and forth with my accountant during tax season. Onyx eliminates both of these problems and more.”
Nicholas K.
Agency Owner
“I've had my gym for 18 years and bookkeeping was always something I paid someone else to handle. $500/mo always felt like a lot. $99 a month is hard to beat!”
Alex F.
Gym Owner
Replace your bookkeeper for only $99/mo.
Go from zero bookkeeping to fully organized in 5 minutes.
For US-based small business owners
256-bit encryption
30-day money-back guarantee
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