Automated bookkeeping for Amazon sellers

Fire QuickBooks and A2X.
Your books now do themselves.

Stonaris connects to Seller Central and your bank and does the bookkeeping for you with AI — no accounting software to operate, no second subscription, nothing to reconcile. And you finally see your real profit.

See how it works
Replaces QuickBooks + A2X · Connects your bank securely via Plaid · 5-minute setup
app.stonaris.com
Stonaris
Overview
Books
Reports
Synced
MR
Net profit · June
$52,380
▲12.1%
vs. May
Revenue
$208,400
Margin
25.1%
JanFebMarAprMayJun
Bookkeeping
99%
auto-filed
3 to confirm
Tax set-aside
$13,090
Q2 · on track
Latest payout
+$18,240
#88421 · Jun 18
The problem

Running an Amazon business takes too many tools — and you still don’t know your real profit.

A generic business checking account. A2X to translate your Amazon settlements into QuickBooks — and QuickBooks itself, bloated general-ledger software built for accountants, not sellers. You pay for two subscriptions and a bank that weren’t built for this, and you still can’t get a straight answer on whether you made money.

Generic business checking
QuickBooks
A2X (to sync Amazon)
Seller Central exports
Accounting software built for accountants — not sellers
→
Stonaris
Everything in one account. Reconciled automatically.
How it works

Connect once. The books keep themselves.

Link Seller Central and your bank, and Stonaris does the bookkeeping QuickBooks and A2X used to — automatically. Knowing your real profit comes free with it.

Connect

Your Amazon account and your bank, in one place.

Connect Seller Central and link your business bank account securely through Plaid. Stonaris pulls in every settlement, fee, and expense — the full picture QuickBooks never saw without paying for A2X on top.

✓Seller Central connected — read-only
✓Bank linked securely via Plaid
✓Every fee and expense captured automatically
Connected accounts
Syncing live
◈
Amazon Seller Central
Settlements & fees · read-only
✓
🏦
Business checkingvia Plaid
Balance & transactions
✓
Automated books

Bookkeeping that does itself.

Stonaris replaces QuickBooks and A2X entirely. Every transaction is categorized and reconciled automatically — the rare exception comes to you as a one-tap confirmation. No accounting software to operate, no second subscription translating your Amazon data.

✓Replaces QuickBooks + A2X — one tool
✓AI categorizes & reconciles automatically
✓Confirm only the rare exception
A few to confirm
Confirm all
Everything else is filed automatically.
↗
Shenzhen Lighting Co.
Jun 16 · $24,000.00
Filed asInventory▾
Confirm
↘
Stripe deposit
Jun 11 · $1,240.00
Filed asIncome▾
Confirm
Real profit · the bonus

And because we see everything, your real profit comes free.

Because Stonaris connects to both your bank and Seller Central, it already sees every fee, supplier payment, and shipping cost. So your true profit just appears — each payout broken into exactly what’s inside it, with your tax set-aside updating itself.

✓Every settlement, broken down automatically
✓Automatic tax set-aside
✓Export-ready P&L and tax packages
Settlement #88421 · Jun 5–18
Net payout
+$18,240.12
Product sales+$28,390
FBA & referral fees−$6,120
Advertising−$3,400
Refunds−$840
Reimbursements+$210
Why it’s different

Bookkeeping, fully automated.
QuickBooks and A2X, gone.

QuickBooks hands you software to operate and a ledger to maintain. Stonaris does the bookkeeping for you and asks you to confirm only what it isn’t sure about — the more you confirm, the more it learns, until there’s almost nothing left to do.

99%
of transactions categorized automatically
1 tap
to confirm the rare exception
2
tools replaced — QuickBooks & A2X
Security & trust

Built to protect your money and your data.

⌘

Your bank connects securely via Plaid

We link your existing business bank account through Plaid — the same secure connection trusted by thousands of financial apps. Read-only access to transactions; we can never move your money. Your login credentials are never stored by Stonaris.

🔒

Bank-grade security

256-bit encryption in transit and at rest, multi-factor authentication, and SOC 2 controls. Connections to Seller Central and Amazon Ads are read-only — we can see your data, never move your Amazon account.

✓256-bit encryption
✓SOC 2 controls
✓Multi-factor authentication
✓Read-only Amazon connections
Why we built Stonaris

I was paying for two subscriptions — A2X just to translate my Amazon settlements into QuickBooks — and QuickBooks is bloated accounting software built for accountants, not sellers. After all of it, I still couldn’t get a straight answer on what I actually made.

I didn’t want a chart of accounts and journal entries — I wanted to know what each payout contained and whether I was profitable. So we built Stonaris: connect Amazon and your bank, and the books keep themselves, with a profit number you can actually trust. Business banking built for sellers is coming next.

S
Founder & CEO, Stonaris
Former Amazon seller
Coming soon

Business banking, built for Amazon sellers.

Soon your money will live inside Stonaris too — a business account made for sellers, with cards and supplier payments. When it arrives, your books will already be running on it. Start with automated bookkeeping today.

◆Business account & cards
◆Pay suppliers worldwide
◆FDIC insurance via our banking partner

Fire QuickBooks and A2X.
Keep your profit.

Get started in five minutes. Connect Seller Central and your bank, and your books start keeping themselves.

Replaces QuickBooks + A2X · Connects your bank via Plaid · Business banking coming soon