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.
OnyxLimited Time: Free 2026 Books Catch-Up (Normally $199)
Automate 97% of your accounting instantly with self-learning AI
Automatic reconciliation, CPA-ready income statements, and deduction reminders.
Zero spreadsheets.
Like QuickBooks or Xero, but passive.
Bookkeeper + QuickBooks = $500/mo+
Onyx is only $99/mo.
Cancel your unused accounting software. Forget about a bookkeeper. Save thousands of dollars per year with Onyx.
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.
Connect with thousands of US banks like:
Chase
Bank of America
Wells Fargo
Citibank
U.S. Bank
PNC Bank
Truist
Capital One
TD Bank
Fifth Third Bank
Ally Bank
Regions Bank
Huntington Bank
KeyBank
Citizens Bank
American Express
Discover Bank
Chime
SoFi
Navy Federal Credit Union
How it works:
Connect Instantly
Link unlimited business bank accounts and cards via Plaid. Takes about 60 seconds.
Let Onyx Work
Onyx categorizes 97% 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 and it gives me clarity on my bottom line every month. It's amazing. Give it a try!”
Ryan M.
Contractor
“The peace of mind I feel knowing my books are clean, organized, and ready to send to my CPA is irreplaceable. It's simple, clean, effective. It gives me deduction reminders so I can enhance my tax strategy, and it takes me less than 10 minutes a month to keep my entire business finances up to date.”
Steven D.
Agency Owner
“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.
Contractor
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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