Monthly Bookkeeping Checklist: 12 Essential Tasks

Monthly bookkeeping is not simply a list of transactions to categorize. It is a repeatable process for turning a client’s financial activity into complete, reconciled, and review-ready records.

For accounting and bookkeeping firms, the challenge is often consistency. Documents arrive late, bank-feed exceptions remain unresolved, client questions go unanswered, and reviewers cannot easily tell what has or has not been completed.

This monthly bookkeeping checklist organizes the work into three practical phases: prepare the file, reconcile and review the accounts, and deliver the finished reporting package. You can adapt it to each client’s service scope, accounting method, software, and reporting deadline.

Key Takeaways

• A reliable monthly process begins before reconciliation, with a clear close date, defined responsibilities, and complete client records.
• Bank, credit card, loan, payroll, and payment processor balances should be verified against reliable supporting documentation.
• Sales tax, inventory, deferred revenue, and similar tasks should only appear when they are part of the client’s service scope.
• Bookkeeping is not complete when transactions are entered. The file must also pass a financial statement and quality-control review.
• Recurring workflow software helps firms track missing information, assignments, dependencies, due dates, and review status across multiple clients.

What Is a Monthly Bookkeeping Checklist?

A monthly bookkeeping checklist is a documented sequence of tasks used to complete and review a client’s books for a specific accounting period. It identifies the work required, who owns each task, what evidence is needed, and when the completed file should be delivered.

The checklist should cover more than data entry. A complete process normally includes:

• Collecting missing source documents
• Recording and categorizing transactions
• Resolving bank-feed exceptions
• Reconciling balance sheet accounts
• Reviewing revenue and expenses
• Investigating unusual balances
• Completing a quality-control review
• Delivering reports and client questions

A monthly bookkeeping checklist and a month-end close checklist are closely related, but they are not always identical. Monthly bookkeeping covers the full service cycle, including document collection, transaction processing, reconciliations, review, and client delivery. A formal month-end close may include additional accounting controls, adjusting entries, management approvals, and restrictions on posting to a closed period.

If your engagement includes a formal close, use this checklist alongside a dedicated month-end close checklist.

Before You Begin: Define the Monthly Operating Rules

A checklist only works when the team knows what “complete” means. Before building the recurring workflow, define the following details for each client:

• Close deadline: The date by which the monthly books should be ready for review or delivery.
• Client cutoff date: The deadline for submitting statements, receipts, payroll reports, and requested answers.
• Service scope: The accounts, entities, reports, and compliance activities included in the engagement.
• Task ownership: The preparer, reviewer, client contact, and escalation owner.
• Materiality guidelines: The types or amounts of discrepancies that require additional investigation.
• Supporting evidence: The documentation required before each reconciliation or review task can be marked complete.

These rules prevent team members from making different assumptions about the same client. They also make it easier to identify scope changes before additional work becomes an untracked obligation.

Monthly Bookkeeping Checklist: 12 Essential Steps

Phase 1: Prepare the Client File

1. Confirm the Period, Scope, and Delivery Date

Start each cycle by confirming the accounting period and the work expected for that client. This is especially important when the firm offers different service levels or manages entities with different reporting schedules.

Before processing begins, verify:

• The month and year being completed
• The entities and accounts included
• The reporting or delivery deadline
• Any unusual transactions expected during the period
• Changes in payroll, financing, ownership, locations, or software
• Any open questions carried forward from the previous month

Reviewing these details first reduces the risk of completing work against the wrong period or overlooking a recently added account.

2. Collect Missing Statements and Source Documents

Determine whether the team has the information required to complete the work. Do not wait until the final review to discover that a bank statement or payroll report is missing.

Depending on the engagement, requested documents may include:

• Bank and credit card statements
• Payment processor reports
• Loan or line-of-credit statements
• Payroll registers and payroll liability reports
• Sales tax reports
• Merchant deposit summaries
• Inventory or cost-of-goods-sold records
• Invoices, bills, receipts, and reimbursement details
• Information about asset purchases or financing

Track every missing item as an explicit workflow task. An email request alone is easy to lose, particularly when the team is waiting on several clients at once.

3. Complete Transaction Entry and Categorization

Record outstanding activity and review imported transactions before beginning reconciliations. Confirm that transactions are recorded in the correct period, assigned to the appropriate account, and supported by enough information to understand their purpose.

Pay particular attention to:

• Uncategorized or uncoded transactions
• Duplicate bank-feed entries
• Transfers recorded as income or expenses
• Loan proceeds categorized as revenue
• Personal expenses charged to business accounts
• Payments applied to the wrong customer or vendor
• Transactions posted to broad suspense or miscellaneous accounts

Recurring rules can accelerate transaction processing, but they should still be reviewed. A rule created for one vendor or payment type can produce incorrect classifications when the underlying activity changes.

4. Review Bank-Feed Exceptions and Unmatched Activity

Before reconciling, investigate transactions that did not match cleanly between the bank feed and the accounting system. These exceptions often reveal duplicate entries, deleted transactions, incorrect dates, or payments recorded through the wrong account.

Resolve exceptions rather than forcing the reconciliation to balance. If the cause cannot be determined, document the issue and assign the follow-up to the person best positioned to resolve it.

Phase 2: Reconcile and Validate the Accounts

5. Reconcile Bank, Credit Card, and Payment Processor Accounts

Reconcile every active bank and credit card account to its statement ending balance. Accounts with no apparent activity should still be reviewed if they remain open or contain a balance.

Where applicable, reconcile payment platforms and clearing accounts separately. A payment processor balance may include deposits in transit, fees, refunds, chargebacks, or reserves that have not yet reached the operating bank account.

During reconciliation, investigate:

• Uncleared checks or deposits that have remained outstanding
• Duplicate transactions
• Missing fees or interest
• Transfers recorded on only one side
• Transactions posted to an inactive account
• Differences between processor reports and bank deposits

Do not create an unexplained adjustment simply to force a zero difference. Every discrepancy should be resolved or clearly documented for review.

6. Review Accounts Receivable and Customer Activity

If the client uses accrual accounting or maintains customer invoices, review the accounts receivable aging report and confirm that the detail agrees with the general ledger.

Look for:

• Invoices that remain unpaid beyond normal terms
• Customer payments that have not been applied
• Duplicate invoices or credit memos
• Negative customer balances
• Deposits recorded as revenue before the related work is complete
• Balances that may need to be written off or escalated

The bookkeeper may not be responsible for collecting the balance, but the file should make overdue and unusual items visible to the client.

7. Review Accounts Payable and Vendor Activity

Review unpaid bills and confirm that vendor balances agree with the general ledger. Pay special attention to invoices that may have been paid outside the normal bill-payment process.

Check for:

• Duplicate bills
• Payments not applied to an open bill
• Old vendor credits
• Negative accounts payable balances
• Bills entered in the wrong accounting period
• Recurring expenses that may be missing

If accounts payable management is outside the engagement, document the exception and communicate it without taking unauthorized action.

8. Verify Payroll Entries and Payroll Liabilities

Compare payroll activity in the general ledger with the payroll provider’s reports. Confirm that gross wages, employer taxes, employee deductions, benefit contributions, and net-pay withdrawals are recorded appropriately.

Payroll tax and benefit liability accounts should reflect amounts that remain legitimately unpaid at the end of the month. Unexpected or growing balances may indicate a missing payment, a duplicated entry, or a mapping problem between systems.

9. Reconcile Loans and Other Balance Sheet Accounts

Bank accounts are not the only balances that require support. Review applicable balance sheet accounts and compare them with loan statements, schedules, subsidiary reports, or other reliable records.

Depending on the client, this may include:

• Loans and lines of credit
• Owner contributions and distributions
• Fixed assets and accumulated depreciation
• Prepaid expenses
• Security deposits
• Deferred revenue
• Accrued expenses
• Intercompany or due-to/due-from accounts
• Payroll and sales tax liabilities
• Suspense and clearing accounts

Prioritize accounts that can materially affect the financial statements or that regularly accumulate unresolved activity.

Phase 3: Review and Deliver the Finished Work

10. Complete Client-Specific and Conditional Tasks

Not every monthly task belongs on every client checklist. Add the following activities only when they are included in the engagement or required by the client’s operations:

• Calculating or reviewing sales tax liabilities
• Reconciling inventory quantities and values
• Reviewing job, class, department, or location reporting
• Allocating prepaid expenses
• Recording depreciation or amortization
• Reviewing deferred or unearned revenue
• Posting recurring accruals
• Reconciling intercompany balances
• Updating supporting schedules

Making these tasks conditional keeps the standard workflow useful without suggesting that every service is automatically included for every client.

11. Review the Financial Statements and Investigate Variances

After the accounts are reconciled, review the balance sheet and profit and loss statement as a connected financial story. The objective is to identify balances or movements that do not make sense given the client’s normal operations.

Review questions may include:

• Did revenue or gross margin change significantly?
• Are any expense accounts unexpectedly negative?
• Are balance sheet accounts supported by reconciliations or schedules?
• Do suspense, uncategorized, or clearing accounts contain balances?
• Are owner transactions classified consistently?
• Are payroll costs reasonable compared with prior periods?
• Do cash movements agree with known financing and operating activity?
• Are there unusual journal entries near the end of the period?

Compare the current month with prior periods, budgets, or other relevant benchmarks when those reports are available. Any unexplained variance should become a documented question or review note.

12. Complete Quality Control, Deliver Reports, and Set the Next Cycle

Before sending reports to the client, have the preparer or reviewer confirm that all required work is complete. The reviewer should be able to trace important balances to supporting documentation and understand how outstanding questions were handled.

The final monthly package may include:

• Balance sheet
• Profit and loss statement
• Cash flow statement
• Accounts receivable aging
• Accounts payable aging
• Management reports included in the engagement
• A summary of open questions or unusual activity

Record the delivery date, note any unresolved items, and carry legitimate follow-up tasks into the next workflow. This creates a reliable history instead of forcing the team to reconstruct the previous month’s decisions.

When Is the Monthly Bookkeeping Complete?

The work is complete when the file is supportable, reviewable, and ready for its intended use. Entering the last transaction is not the finish line.

Before closing the workflow, confirm that:

• All required documents have been received or listed as outstanding.
• All material transactions have been recorded in the correct period.
• Required accounts have been reconciled to reliable evidence.
• Unusual or unsupported balances have been investigated.
• Review notes have been resolved or assigned.
• Financial reports have passed the firm’s quality-control process.
• The client has received the agreed reports and questions.
• Deferred items have an owner and a follow-up date.

How to Handle Missing Client Information

Late documents are one of the most common reasons monthly work stalls. A consistent escalation process helps the team respond without relying on memory.

1. Request the item early. Send a specific request that names the missing document, period, and account.
2. Record the request in the workflow. Assign an owner and due date so the item remains visible.
3. Follow the agreed reminder schedule. Avoid sending inconsistent or overlapping messages from multiple team members.
4. Assess the impact. Determine whether other tasks can continue or whether the missing information blocks reconciliation and review.
5. Escalate when necessary. Notify the engagement owner if the missing information threatens the delivery deadline.
6. Document the outcome. If the client approves delivery with an unresolved item, record the limitation and required follow-up.

A strong bookkeeping onboarding process can prevent many of these delays by establishing document requirements, deadlines, access permissions, and communication expectations at the start of the engagement.

Common Monthly Bookkeeping Mistakes

Using One Identical Checklist for Every Client

A master template creates consistency, but each client version should reflect the actual engagement. Remove irrelevant tasks and add the accounts, reporting requirements, and review steps specific to that client.

Starting Reconciliation Before the File Is Ready

Reconciling before transactions and source documents are complete leads to repeated work. Use dependencies so the reconciliation phase starts after the necessary preparation tasks are finished.

Forcing an Account to Balance

An unexplained adjustment can conceal duplicate transactions, missing activity, or an incorrect opening balance. Investigate differences and preserve supporting documentation for any valid adjustment.

Reviewing Only the Profit and Loss Statement

Many bookkeeping problems appear on the balance sheet first. Loan balances, payroll liabilities, clearing accounts, receivables, payables, and owner equity should receive appropriate attention.

Treating Client Follow-Up as an Informal Activity

If missing information is not recorded as a task, it can disappear into an inbox. Client requests should have a clear owner, due date, status, and escalation path.

Marking Work Complete Before Review

A preparer may finish the assigned entries and reconciliations, but the engagement is not complete until the required review and delivery steps have also been performed.

How to Turn the Checklist Into a Recurring Workflow

A written checklist explains what must happen. A recurring workflow adds ownership, scheduling, visibility, and accountability.

When building the process:

1. Create a master monthly bookkeeping template.
2. Group tasks by preparation, reconciliation, review, and delivery.
3. Assign each task to a role or team member.
4. Add dependencies where one task must finish before another begins.
5. Attach procedures and documentation requirements to the relevant tasks.
6. Set client-specific deadlines and internal review dates.
7. Create a method for recording client questions and exceptions.
8. Review the workflow periodically and remove steps that no longer add value.

For additional guidance, see our bookkeeping workflow template and collection of accounting workflow templates.

Frequently Asked Questions

What should be included in a monthly bookkeeping checklist?

A monthly bookkeeping checklist should include document collection, transaction processing, bank-feed review, account reconciliations, receivable and payable review, payroll verification, balance sheet review, financial statement analysis, quality control, and report delivery. Client-specific tasks should be added based on the engagement scope.

What is the difference between monthly bookkeeping and month-end close?

Monthly bookkeeping covers the recurring process of collecting records, recording transactions, reconciling accounts, reviewing the file, and delivering reports. Month-end close generally refers to the formal procedures used to finalize an accounting period, including adjustments, approvals, and controls that prevent further unauthorized changes.

Should every bank and credit card account be reconciled monthly?

Active bank and credit card accounts should generally be reconciled each month. Open accounts with no apparent activity should also be reviewed for unexpected transactions, fees, or unresolved balances.

Are sales tax and inventory part of every monthly bookkeeping checklist?

No. Sales tax, inventory, and similar activities should be included only when they apply to the client and are part of the agreed service scope. They should not be presented as universal bookkeeping responsibilities.

What should a bookkeeper do when a client submits documents late?

The missing item should be recorded in the workflow, assigned to an owner, and followed through the firm’s reminder and escalation process. The team should also determine whether other tasks can proceed and communicate any expected reporting delay.

Where should a firm manage recurring monthly bookkeeping tasks?

A firm can begin with a spreadsheet or document, but recurring workflow software is more effective when multiple clients, team members, dependencies, and deadlines must be managed. The system should show task ownership, due dates, client requests, review status, and incomplete work.

Where can I get a free monthly bookkeeping checklist template?

You can access Jetpack Workflow’s free accounting and bookkeeping workflow templates and customize the monthly tasks for your clients and firm.

Build a More Consistent Monthly Bookkeeping Process

A useful monthly bookkeeping checklist does more than remind the team which accounts to reconcile. It establishes a consistent operating sequence, clarifies when work is blocked, and defines the checks required before reports reach the client.

Start with the checklist above, remove tasks that fall outside the engagement, and add the accounts and controls that matter to each client. Then place the process in a recurring workflow so the team can track responsibilities and deadlines without rebuilding the plan every month.

Start Your Free Trial and see how Jetpack Workflow can help your firm manage recurring monthly bookkeeping work.