Close the Month in 90 Minutes: Complete Month-End Checklist | Seller Bookkeeping
Free PDF Guide โ€ข Month-End Close โ€ข eCommerce Bookkeeping

Close the Month in 90 Minutes: Complete Month-End Checklist

Use this practical month-end checklist to organize sales, payouts, bank activity, inventory, cost of goods sold, expenses, reports, and final review steps without wasting hours inside spreadsheets. Built for eCommerce sellers, Amazon sellers, Shopify brands, and bookkeepers who want a cleaner monthly close.

90-Minute month-end close workflow
15 Min Collect sales, payout, bank, payment processor, and expense source documents.
30 Min Reconcile bank, credit card, marketplace payouts, and payment deposits.
25 Min Review inventory, COGS, fees, refunds, returns, subscriptions, and owner activity.
20 Min Run reports, check reasonableness, save notes, and create a tax-ready month-end file.

Month-End Checklist for eCommerce Sellers and Bookkeepers

Close the Month in 90 Minutes is a focused month-end checklist for sellers and bookkeepers who want a repeatable bookkeeping close without confusion. Instead of wondering what to review every month, this guide gives you a step-by-step workflow for collecting records, reconciling accounts, reviewing inventory, checking fees, preparing reports, and saving a clean monthly close package.

Month-end bookkeeping can become stressful when the process is unclear. eCommerce sellers may have Amazon settlement deposits, Shopify payouts, PayPal activity, Stripe deposits, sales tax adjustments, refund activity, inventory purchases, advertising charges, software subscriptions, shipping expenses, and business credit card transactions all happening at once. A simple bank-feed review is not enough when one deposit can include sales, fees, refunds, chargebacks, taxes, and timing differences.

This complete month-end checklist helps you move through the close in the right order. You start by gathering source records, then reconcile cash accounts, then verify revenue and payouts, then review expenses, then check inventory and COGS, and finally prepare reports. The goal is not to rush through bookkeeping. The goal is to remove wasted time, missed steps, repeated questions, and end-of-year cleanup problems.

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What This Free PDF Guide Helps You Do

This guide is designed for business owners and bookkeepers who want the month-end close to feel organized and repeatable. A good close is not only about balancing the bank account. It is about making sure the numbers tell a reliable story. When your revenue, fees, refunds, inventory, expenses, liabilities, and reports are reviewed every month, you can make better decisions and reduce the pressure at tax time.

๐Ÿ“Œ Create a Repeatable Close

Follow the same checklist every month so bookkeeping does not depend on memory, guesswork, or scattered notes.

๐Ÿ” Catch Missing Transactions

Review open items, unmatched deposits, uncategorized expenses, duplicate entries, and missing source documents.

๐Ÿ“Š Prepare Cleaner Reports

Run reports that help you understand sales, profit, cash flow, inventory, liabilities, and business health.

๐Ÿงพ Improve Tax Readiness

Save monthly support so your CPA has cleaner books, fewer questions, and better documentation at year end.

๐Ÿ“ฆ Review Inventory and COGS

Check inventory purchases, product costs, landed costs, and COGS so profit is not overstated or understated.

โฑ Save Time Every Month

Use a fixed 90-minute structure so small issues are caught monthly instead of becoming a large cleanup project.

Interactive 90-Minute Month-End Checklist

Use the checklist below as a working version of the guide. The timing is a practical target for a clean, organized account. A business with many channels, high order volume, inventory complexity, or old cleanup issues may need more time, but the order of the workflow still helps keep the close controlled.

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Why Month-End Close Matters

A month-end close gives your business a clean financial checkpoint. Without a monthly process, small mistakes can stay hidden for months. Marketplace deposits may be recorded incorrectly, inventory may be expensed too soon, fees may be hidden inside net payouts, and the profit and loss statement may not show true performance.

  • โœ“ Better visibility into revenue, expenses, and profit
  • โœ“ Cleaner payout reconciliation for Amazon, Shopify, Stripe, PayPal, and marketplaces
  • โœ“ More reliable inventory and COGS reporting
  • โœ“ Easier CPA review at tax time
  • โœ“ Faster decisions on pricing, cash flow, advertising, and restocking
  • โœ“ Fewer year-end cleanup surprises

The 90-Minute Close Framework

A strong close works best when the steps happen in the right order. If you review reports before reconciling accounts, the reports may not mean much. If you reconcile the bank before understanding marketplace payouts, sales and fees may be recorded too simply. This framework keeps the close focused from source documents to final reports.

1

Gather

Collect statements, settlement reports, invoices, receipts, payroll reports, processor reports, and month-end documents.

2

Reconcile

Match bank, credit card, payment processor, marketplace payout, loan, and liability balances to source records.

3

Review

Review revenue, fees, refunds, inventory, COGS, payroll, sales tax, subscriptions, owner activity, and open items.

4

Adjust

Make needed corrections, reclassifications, accruals, inventory entries, COGS entries, and cleanup notes.

5

Report

Run financial statements and management reports that show performance, cash flow, and month-end position.

6

Archive

Save reports, statements, reconciliations, notes, and open questions in a clean monthly folder for future review.

What to Include in Your Month-End Close Folder

A clean month-end close folder makes bookkeeping easier to review later. It also helps when your CPA asks for support, when you need to review a past month, or when you want to compare business performance over time. The folder does not need to be complicated. It should be consistent.

Folder Section Documents to Save Why It Matters
Bank & Credit Cards Monthly bank statements, credit card statements, loan statements, reconciliation reports Supports cash balances, debt balances, and completed reconciliation work.
Sales Channels Amazon settlements, Shopify payout reports, marketplace statements, payment processor reports Shows sales, fees, refunds, sales tax activity, and net deposits by channel.
Inventory & COGS Supplier invoices, freight bills, inventory summaries, landed cost files, COGS support Helps verify gross margin, inventory value, and product cost accuracy.
Tax & Payroll Payroll reports, sales tax filings, tax payments, contractor payments, W-9 notes where applicable Helps keep tax-related activity easy to review and explain.
Final Reports P&L, balance sheet, cash flow view, open items list, month-end notes Creates a final snapshot of business performance and unresolved questions.
Bank & Credit Cards
Save:Statements and reconciliation reports
Purpose:Supports cash and debt balances
Sales Channels
Save:Marketplace and processor reports
Purpose:Shows sales, fees, refunds, and payouts
Inventory & COGS
Save:Supplier invoices and COGS support
Purpose:Verifies margin and inventory value

Common Month-End Close Mistakes

Most month-end problems come from skipping small review steps. A seller may reconcile the bank account but forget to split Amazon payout details. A bookkeeper may record inventory purchases as expenses without reviewing COGS. A business owner may overlook old unpaid bills, payroll liabilities, sales tax payments, or duplicate app charges. The checklist helps reduce these problems by giving every month the same review path.

Mistakes to Avoid

  • Recording net payouts as gross sales
  • Ignoring marketplace fees and processor fees
  • Leaving transactions uncategorized
  • Expensing inventory purchases without reviewing COGS
  • Forgetting loan interest and principal splits
  • Mixing owner draws with business expenses
  • Not saving monthly support documents

Better Close Habits

  • Use a recurring monthly checklist
  • Reconcile every account before reviewing reports
  • Separate sales, fees, refunds, and taxes
  • Review inventory and COGS monthly
  • Compare reports to prior months
  • Write notes for unusual changes
  • Create an open-items list before finalizing

Who Should Use This Guide?

The Close the Month in 90 Minutes checklist is useful for anyone responsible for monthly bookkeeping. It is especially helpful for eCommerce sellers because online sales channels often create messy payout activity. It also works well for bookkeepers who want a client-facing checklist or an internal close workflow.

Amazon Sellers

Use it to review settlements, FBA fees, storage fees, refunds, reimbursements, and inventory activity.

Shopify Brands

Use it to reconcile Shopify Payments, PayPal, Stripe, apps, shipping tools, and sales tax activity.

Bookkeepers

Use it as a consistent client close workflow for monthly bookkeeping and report review.

Small Businesses

Use it to improve monthly reporting, cash flow visibility, expense review, and tax readiness.

Related Seller Bookkeeping Resources

Continue building a cleaner bookkeeping system with related Seller Bookkeeping resources. These internal pages help sellers understand monthly reports, Amazon accounting, ecommerce bookkeeping, and tax-ready records.

For general recordkeeping guidance, business owners can also review resources from the IRS recordkeeping guide. External guidance is useful, but your own monthly bookkeeping process should be built around your sales channels, accounting software, inventory workflow, tax needs, and reporting goals.

Need Help Closing Your Books Every Month?

Seller Bookkeeping helps eCommerce sellers organize monthly books, reconcile payouts, review inventory, prepare tax-ready reports, and reduce year-end cleanup problems. A consistent close process gives you cleaner numbers and better business decisions.

Schedule Free Consultation

Frequently Asked Questions About the Month-End Checklist

What is a month-end checklist?

A month-end checklist is a repeatable list of bookkeeping tasks used to close a financial month. It usually includes collecting statements, reconciling accounts, reviewing revenue and expenses, checking liabilities, reviewing inventory and COGS, preparing reports, and saving supporting documents.

Can I really close the month in 90 minutes?

A clean and simple account can often be reviewed quickly using a focused workflow. Complex sellers, multi-channel brands, inventory-heavy businesses, or books with old cleanup issues may need more time. The 90-minute structure is designed to reduce wasted time and keep the close organized.

What accounts should be reconciled every month?

Common accounts include bank accounts, credit cards, PayPal, Stripe, Shopify Payments, Amazon payouts, loans, payroll liabilities, sales tax liabilities, and other payment or clearing accounts used by the business.

Why is payout reconciliation important for sellers?

Marketplace and payment processor payouts can include sales, refunds, fees, chargebacks, reserves, taxes, and timing differences. If only the net deposit is recorded, revenue and expense reports may be incomplete or misleading.

Should inventory be reviewed during month-end close?

Yes. Inventory and COGS affect gross margin and taxable profit. Sellers should review supplier invoices, landed costs, inventory balances, inventory adjustments, and cost of goods sold so monthly reports are more accurate.

What reports should I run after closing the month?

Useful reports include a profit and loss statement, balance sheet, cash flow view, accounts receivable, accounts payable, inventory summary, sales channel summary, fee summary, and open items list.

How does this checklist help at tax time?

Monthly closing helps keep records organized throughout the year. Instead of waiting until tax season to fix missing transactions, unclear categories, or unreconciled balances, the checklist helps catch issues every month.

Can Seller Bookkeeping close my books for me?

Yes. Seller Bookkeeping can help with monthly bookkeeping, payout reconciliation, inventory and COGS review, ecommerce bookkeeping cleanup, monthly reports, and tax-ready records for sellers and online businesses.