A year-end bookkeeping checklist for small business owners

1. Match your books to the accounts you actually use

Gather statements for each business bank account, credit card and payment processor. Compare the statement activity with the bookkeeping records. Look for missing transactions, duplicate entries and transfers entered as income or expenses. Keep unresolved differences on a short question list rather than forcing the totals to agree.

Payment processors deserve their own review. A bank deposit may reflect sales after fees, refunds or other adjustments. Keep the processor report that explains the deposit so the person reviewing your books can follow the complete transaction.

• List every account used for the business, including any opened or closed during the year.
• Reconcile one period at a time and save the completed reconciliation.
• Identify personal transactions that passed through business accounts for separate review.

2. Connect expenses to supporting documents

The IRS explains that business records should support the amounts and sources recorded in the books. A payment entry may tell you that money left an account without explaining what was purchased or why it related to the business. Keep invoices, receipts and other supporting records together in a consistent system.

For an unclear purchase, write a factual note while you still remember it. Include the vendor, what was purchased and the business purpose. Ask about any special documentation rules that apply to travel or vehicle expenses. A handwritten explanation is not a substitute for every document a tax rule may require.

3. Make an equipment and property list

Set aside records for equipment, furniture, vehicles and other business property purchased, sold or disposed of during the year. Bring purchase documents, the date the item was put into business use and information about any personal use. Keep prior depreciation records when available.

Do not decide the tax treatment solely from the amount charged to a card. Asset costs, business use and the applicable tax rules need to be considered together. Discuss a planned purchase before assuming it will produce a particular deduction.

4. Build a useful handoff for your accountant

Prepare a year-to-date profit and loss statement and balance sheet if your bookkeeping system provides them. Label the period clearly and explain whether recent transactions remain unentered. Include a list of unpaid customer invoices, unpaid vendor bills and loans so your accountant can determine what matters for your accounting method and return.

Make the questions specific: which transactions need a category, which balances look wrong, which documents are missing and what changed in the business. A short written handoff makes it easier to work through the issues together.

• Keep payroll reports and payroll tax correspondence available if you have employees.
• Save tax payment confirmations with the tax year and payment type.
• Arrange the office-approved method for sharing records before sending sensitive documents.

5. Turn the cleanup into a monthly habit

Choose a regular time to collect statements and resolve missing receipts. Keep digital files organized by year and record type, with a dependable backup. Record retention depends on the document and the circumstances; do not discard records simply because the return has been filed.

McNeel CPA can discuss bookkeeping and tax preparation support based on your business, location and needs. Bring the records you have and a clear list of the gaps. The next step is an organized conversation, not a guess about what your final tax bill should be.