Tally for Amazon Sellers
Settlement reconciliation, FBA inventory, and clean financials — automated.
Tally connects Amazon Seller Central to QuickBooks Online so your accountant stops downloading CSVs and starts closing the month on time. Built and operated by Ballast Consulting Group — your finance and accounting department for small businesses.
What Tally does for Amazon sellers
Tally pulls financial and operational data from Amazon's Selling Partner API and ties it into your accounting stack — automatically, with no manual exports.
Settlement reconciliation
Pulls financial event groups and settlement reports with full fee breakdowns — referral fees, FBA fees, shipping credits, tax collection, refunds, and adjustments — so each Amazon deposit ties out to QuickBooks.
Order-level revenue tracking
Reads order data including revenue, tax, shipping, and discounts for accurate revenue recognition and sales-tax reporting on a per-order basis.
FBA inventory visibility
Reads inventory summaries by SKU and condition (fulfillable, inbound, reserved, unfulfillable) for balance-sheet inventory and shrinkage detection.
Catalog & product mapping
Accesses catalog items and SKU data so line items on invoices and COGS entries map back to the right product.
Fee modeling & competitive pricing
Optional access to product fee estimates and competitive pricing for cost modeling, margin analysis, and price validation.
Read-only & PII-safe
Tally cannot modify orders, listings, inventory, or any seller data. Buyer personally identifiable information (names, emails, addresses) is automatically stripped before reaching any user.
How it works
Setup is OAuth-based and takes under 10 minutes. No AWS roles, no manual feeds, no CSV scheduling.
Authorize Tally in Seller Central
Click the Authorize button. Amazon shows the read-only scopes Tally is requesting. You approve.
Connect QuickBooks Online
Authorize Tally with your QBO realm so settlements, fees, and inventory can map to your chart of accounts.
Tally backfills history
Tally pulls your historical settlements, orders, and inventory snapshots, then keeps them current daily.
Close the month
Your accountant reviews exceptions in the Tally dashboard. Each Amazon deposit ties out to a QBO deposit.
Availability
Tally is the internal platform Ballast Consulting Group uses to run finance and accounting for its clients. The Amazon Seller Central integration is provided to Ballast clients at no additional charge as part of their engagement — there is no per-seat fee, per-marketplace fee, or per-API-call fee billed to the client.
Tally isn't sold separately. Access requires an active engagement with Ballast Consulting Group as your finance and accounting department. If you are an Amazon seller interested in becoming a Ballast client, contact us below.
Who can use Tally today
- ✓Ballast Consulting Group clients with active engagements
- ✓Ballast staff running finance and accounting for those clients
- ○Other inquiries — please reach out
Security & compliance
Tally handles real client financial data, so we lock down every integration the same way — minimum scope, allowlisted endpoints, encrypted credentials, revocable access.
Read-only by design
Every Amazon API request is validated against an allowlist before transmission. Non-GET requests are rejected at the application layer (with the limited POST exceptions Amazon requires for async read operations).
Encryption at rest
OAuth refresh and access tokens are encrypted using AES-256-GCM. Encryption keys are managed separately from the database and rotated periodically.
PII filtering
Buyer PII (names, emails, addresses, phone numbers, tax info) is stripped from API responses inside our core integration package — before data reaches the Tally dashboard or any AI agent.
Revocable access
Authorization can be revoked at any time from Amazon Seller Central or from the Tally settings page. Revoked tokens are deleted from our database.
Hosted in U.S. data centers
Tally runs on Vercel and Railway with the database on Supabase, all hosted in U.S. AWS regions. HTTPS-only, with HttpOnly Secure cookies and CSRF protection.
Audit logging
Every read against Amazon's SP-API is logged with timestamp, endpoint, and seller ID. Logs are available to seller admins on request.
Frequently asked questions
Does Tally make changes to my Amazon Seller Central account?
No. Tally is strictly read-only. It cannot create, modify, or cancel orders, listings, inventory, or fulfillment requests. Every API call is restricted to GET endpoints (with the limited exceptions Amazon requires for asynchronous read operations like report generation and fee estimates).
What data does Tally access?
Tally accesses data only within the Selling Partner Insights, Inventory and Order Management, and Product Listing role scopes. Specifically: orders, financial event groups, settlement reports, catalog metadata, FBA inventory summaries, product fees, competitive pricing, and marketplace participations.
How is buyer privacy handled?
Buyer personally identifiable information — names, email addresses, shipping addresses, phone numbers, and tax info — is automatically stripped from API responses before reaching any user, dashboard, or AI agent. Tally does not use Restricted Data Tokens (RDTs) and never requests buyer PII.
How are credentials stored?
All OAuth refresh tokens and access tokens are encrypted at rest using AES-256-GCM in a Supabase PostgreSQL database. Connections can be revoked at any time from Amazon Seller Central or by disconnecting in Tally.
Which marketplaces are supported?
Tally supports all marketplaces in the Amazon SP-API North America, Europe, and Far East regions. The default marketplace is US (ATVPDKIKX0DER). Additional marketplaces can be enabled per seller on Growth and Firm plans.
Do I need a Professional Selling account?
Yes. Amazon's SP-API is only available to sellers on the Professional plan. If you are on an Individual plan, you will need to upgrade in Seller Central before connecting.
How long does setup take?
Most sellers connect in under 10 minutes: authorize Tally in Seller Central, paste the resulting credentials into Tally, and you're live. Initial historical backfill of settlements typically completes within a few hours depending on volume.
Who builds and supports Tally?
Tally is built and operated by Ballast Consulting Group, LLC — your finance and accounting department for small businesses, U.S.-based. Support is provided by accountants, not a generic ticket queue.
Talk to Ballast about your Amazon books
Tally's Amazon integration comes at no additional charge when Ballast runs finance and accounting for you. If you sell on Amazon and need a team that can actually reconcile your settlements, get in touch.