Amazon FBA Bookkeeping Checklist: Month-End Tasks

What Is an Amazon FBA Bookkeeping Checklist?

An Amazon FBA bookkeeping checklist is a structured list of accounting tasks that you — or your bookkeeper — complete at the end of every month to ensure your financial records are accurate and up to date.

It covers everything from downloading your Amazon settlement reports and posting them in QuickBooks to reconciling your bank accounts, updating your inventory values, and confirming that sales tax returns have been filed.

The checklist is not about doing more work. It is about doing the right work in the right order, every month, so nothing falls through the cracks.

Who Is This Checklist For?

This checklist is designed for Amazon FBA sellers in the US and Canada who use QuickBooks Online for bookkeeping, A2X for settlement data, and TaxCloud for sales tax compliance. It applies whether you manage your own books or oversee a bookkeeper.

If you are managing your books yourself, use this checklist as your monthly guide. If you work with a bookkeeper, use it as a scope document to confirm what should be included in their monthly deliverable.

If your QuickBooks is not yet set up for Amazon FBA, start here: How to Set Up QuickBooks Online for Amazon FBA Sellers before working through this checklist.

Why a Monthly Amazon FBA Bookkeeping Checklist Matters

Monthly Books Eliminate Year-End Surprises

When bookkeeping is done monthly, tax season is not an event. Your accountant gets a clean, verified set of records. They file the return. It is done. No scrambling, no expensive cleanup, no reconstructing records from memory.

When bookkeeping is done annually — or not at all — tax season involves several weeks of backlog cleanup. Bookkeepers charge more for catch-up work. Accountants bill extra for sorting through disorganized records. The cost of staying current is always less than the cost of falling behind.

It Makes Your P&L Reliable Every Month

A monthly close means your Profit and Loss report is always accurate. You can see your real gross margin, your actual advertising spend as a percentage of revenue, and your net income — not rough estimates based on bank deposits.

This matters for pricing decisions, inventory reinvestment, and cash flow management. Sellers who review a verified monthly P&L make faster, better decisions than those who guess.

It Keeps Sales Tax Compliance on Track

Sales tax obligations do not pause if you forget to check them. States have filing deadlines — monthly, quarterly, or annually — and missing them triggers penalties. A month-end checklist that includes a TaxCloud review ensures every return is filed and every state is covered before the deadline passes.

See the full picture of how these tools work together: Amazon Seller Accounting: The Complete Guide for US and Canada.

Tools You Need for Month-End Amazon FBA Bookkeeping

This checklist is built around the four-tool stack that Thelonex uses for Amazon FBA sellers in the US and Canada. Here is what each tool does in your monthly close:

If you are not yet using A2X, your settlement reconciliation will take significantly longer. If you are not using TaxCloud, you need to verify sales tax filings manually across every nexus state. Both gaps are worth closing before you try to systematize your monthly process.

Learn how A2X eliminates manual settlement entry: A2X vs Manual Entry: Which Is Better for Amazon Bookkeeping? 

The Amazon FBA Month-End Bookkeeping Checklist

The 15 tasks below are organized into four weekly phases. Working through them in order ensures each step has what it needs from the previous one. Complete this process within the first 10 business days after the month ends.

W1 = Week 1 tasks (data gathering and settlement posting). W2 = Week 2 (inventory and COGS). W3 = Week 3 (bank and card reconciliation). W4 = Week 4 (review, reporting, and tax confirmation).

How to Complete the Key Tasks in This Checklist

Most tasks in the checklist are straightforward once your tools are connected. These are the ones that need the most attention.

Task 2: Review A2X Settlement Postings

After A2X posts your settlements to QuickBooks, do not just assume they are correct. Open the A2X dashboard and confirm that every settlement from the month has a status of Posted. Then open the corresponding journal entry in QuickBooks and check that the totals for sales, fees, and refunds match the settlement report in Seller Central.

Discrepancies here usually mean a mapping issue — a fee type that A2X is sending to the wrong QuickBooks account. Fix the mapping in A2X, then repost the affected settlement.

Task 5: Calculate and Post the COGS Journal Entry

This is the task most sellers either skip or get wrong. COGS is not the same as your total inventory purchases for the month — it is the cost of the specific units you sold.

To calculate COGS for the month:

1. Pull the Sales by SKU report from Seller Central for the month
2. Multiply units sold by your per-unit cost for each SKU
3. Sum the totals across all SKUs to get your total COGS for the period
4. Create a journal entry in QuickBooks: Debit COGS: Product Cost, Credit Inventory Asset

If you track multiple SKUs at different cost levels, this calculation takes 15 to 30 minutes with a spreadsheet. Once your QuickBooks Plus inventory tracking is set up correctly, QuickBooks can handle this automatically.

For a detailed COGS walkthrough: How to Track Amazon FBA Cost of Goods Sold in QuickBooks 

Task 8: Reconcile All Business Bank Accounts

Bank reconciliation in QuickBooks Online means matching every transaction in QuickBooks against your bank statement, line by line, until the QuickBooks balance equals the bank statement closing balance.

Go to Accounting > Reconcile in QuickBooks. Select the account. Enter the closing balance from your bank statement. QuickBooks will show you unmatched transactions on both sides. Work through them:

• Transactions in the bank but not in QuickBooks — add them to QuickBooks with the correct category
• Transactions in QuickBooks but not in the bank — check for duplicates and delete them

Never close a reconciliation by adjusting the opening balance to force a match. That hides errors and distorts your balance sheet permanently.

Task 13: Check Sales Tax Obligations

Log in to TaxCloud and confirm that returns for all nexus states with a period ending in the previous month have been filed and a confirmation number has been issued. Also check whether your sales have crossed any new state nexus thresholds — particularly if you had a strong month.

If any state return is still pending, confirm the due date and submit before it passes. TaxCloud auto-files in most cases, but it is worth a manual confirmation once per month.

For a full guide to managing nexus and TaxCloud filing: TaxCloud for Amazon Sellers: How to Automate Sales Tax Filing

Practical Tips for Staying Consistent With Your Checklist

Block the Same Time Every Month

The sellers who maintain clean books treat month-end close like a fixed appointment. Block two to three hours in your calendar during the first week after each month ends. Do not let it get pushed to the third or fourth week — the further you get from the month, the harder it is to remember context around unusual transactions.

Complete Each Task Fully Before Moving to the Next

The checklist is sequential by design. You cannot reconcile your bank accounts correctly until A2X has posted all settlements. You cannot verify your P&L until your COGS entries are done. Jumping ahead creates partial reconciliations that are harder to unwind than starting them correctly.

Save Your Work at Each Stage

After posting A2X entries, export a settlements summary as a PDF. After reconciling each bank account, export the reconciliation report from QuickBooks and save it to a dated folder. After the final P&L and Balance Sheet review, export both reports as PDFs. This gives you a monthly audit trail that is invaluable if you ever need to revisit a specific period.

If You Fall Behind, Prioritize Getting Current Before Adding Process

If you missed last month — or several months — do not try to build a monthly checklist habit on top of a backlog. Clean up the historical records first, then implement the checklist going forward. Trying to maintain both simultaneously creates confusion about which period you are in.

If you have a bookkeeping backlog, start here: Amazon Catch-Up Bookkeeping: How to Fix Months of Messy Records 

Common Mistakes to Avoid

• Skipping the COGS journal entry and only recording it at year-end — this makes every monthly P&L useless for decision-making
• Reconciling bank accounts without matching A2X entries first — settlements that have not posted will show up as unexplained deposits
• Using the Amazon settlement deposit date as the revenue recognition date — revenue should be recognized in the period the sales occurred, not when Amazon pays you
• Ignoring the balance sheet — most sellers only review the P&L, but the balance sheet is where inventory errors, unpaid liabilities, and unrecorded purchases hide
• Not confirming TaxCloud filings — auto-filing works consistently, but a monthly manual check takes two minutes and prevents missed deadlines from compounding

Conclusion

A monthly bookkeeping checklist is the difference between knowing your numbers and guessing at them. The 15 tasks in this checklist — spread across four weekly phases — give you a complete, verified close every month: settlements reconciled, COGS updated, bank accounts matched, sales tax confirmed.

The sellers who run this process consistently do not dread tax season. They do not pay extra for catch-up work. And when they need to make a pricing decision, refinance inventory, or evaluate a product line, they have accurate data to work from.

Bookmark this checklist. Block the time. Run it every month. It is one of the highest-value habits an Amazon FBA seller can build.