Bookkeeping Year-End Cleanup Checklist 2026

Prepared by Parsi Team | Published: July 2026 | Version 1.0

Year-end is generally the most effective time for business owners to review their accounting records before tax filing season begins. A structured cleanup process can help identify reconciling items, unrecorded transactions, and documentation gaps while there is still time to make corrections. This checklist is a general planning tool and does not address any specific taxpayer facts or circumstances.

1. Cash and Bank Reconciliation

Reconcile all bank statements through the most recent month-end Reconcile all credit card and merchant processor accounts Review and clear stale checks older than 90–180 days, consistent with California Unclaimed Property Law Investigate and resolve undeposited funds and clearing account items Document all reconciling items and adjustments

Important NoteUnresolved stale items may contribute to misstated financial records. Reconciling accounts promptly is generally considered good recordkeeping practice.

2. Accounts Receivable & Revenue Recognition

Run and review the Accounts Receivable Aging Report Evaluate collectibility and consider bad debt write-offs consistent with IRC §166 Review deferred revenue and customer deposits for proper recognition Document the revenue recognition method used (accrual, completed-contract, or other applicable method) Follow up on overdue invoices

3. Accounts Payable, Accruals & Prepaids

Match open payables to invoices and receiving reports Review accrued expenses that may qualify under the recurring-item exception (Reg. §1.461-5) Review prepaid expenses under the 12-month rule (Reg. §1.263(a)-4) Verify vendor information on file for potential 1099-NEC reporting ($600 threshold, subject to current IRS rules)

4. Inventory & Fixed Assets

Perform a physical inventory count (or cycle count) near year-end Adjust inventory records to reflect actual quantities and values Update the fixed asset register with all additions, disposals, and transfers Calculate and record depreciation for federal and California purposes separately Prepare a separate California depreciation schedule to account for bonus depreciation differences

Important NoteCalifornia generally does not conform to federal bonus depreciation rules. Maintaining separate federal and California worksheets is typically recommended.

5. Owner Equity & Related-Party Transactions

Reconcile owner draws, contributions, and equity accounts Document related-party loans with adequate interest, consistent with IRC §7872 Review reasonable compensation considerations for S-corporation shareholders Document guaranteed payments to partners

6. Expense Substantiation

Collect and organize receipts for travel, meals, and entertainment (IRC §274) Maintain mileage logs for vehicle expenses Verify home office deduction documentation and allocation methodology Confirm meals are limited to the applicable 50% deduction, where applicable Review all miscellaneous or uncategorized expense entries

7. Final Close Procedures

Post all adjusting journal entries Review the trial balance and financial statements Prepare supporting schedules for the tax return Back up all accounting data Archive records consistent with applicable IRS and FTB retention guidelines

Compliance Resources and Tools

IRS Publication 583, Starting a Business and Keeping Records (irs.gov)
IRS Publication 535, Business Expenses (irs.gov)
IRS Publication 946, How To Depreciate Property (irs.gov)
FTB Publication 1001, Supplemental Guidelines to California Adjustments (ftb.ca.gov)
IRS Form 4562 Instructions — depreciation and amortization (irs.gov)

Key Takeaways

Completing reconciliations early may generally reduce year-end workload and stress.
Strong documentation practices typically support deductible expense positions.
Federal and California depreciation differences are generally tracked separately due to non-conformity.
Organized, reconciled books may generally support more accurate estimated tax payments and return preparation.
This checklist is educational in nature and does not address any specific taxpayer facts or circumstances.

Disclaimer. The information contained in this publication is provided for educational and general informational purposes only. It does not constitute tax advice, accounting advice, legal advice, or any other form of professional advice and does not create a client-professional relationship. The content reflects tax law and regulations applicable on the date of publication only and is subject to change without notice. No reader should act or refrain from acting on the basis of this publication without first obtaining specific written advice from a licensed CPA based on the reader's individual facts and circumstances. This publication was prepared by non-licensed content personnel under the direct supervision and final approval of a licensed CPA. © 2026 Parsi & Company, CPA. All rights reserved. Last updated: July 2026.