Small Business Year-End Bookkeeping Checklist

By Cedar & Ledger

The end of the year is when loose ends in your books start to matter. Tax forms arrive in January, your tax preparer asks for totals, and a missing receipt from March is much harder to find in April. A short year-end check in December or early January turns twelve months of entries into one clean set of numbers. This checklist is for freelancers, side hustles and small service businesses that keep their own books. For the money side of closing the year (chasing invoices, the tax set-aside, the January 15 payment and next year's rates), see Year-End Money Checklist for Freelancers and Side Hustles.

Every number below is a made-up example to show the steps, not a benchmark. This is general information, not tax, legal or accounting advice. Rules depend on your situation, so check IRS Publication 583, Starting a Business and Keeping Records, or ask a tax professional about what applies to you.

Quick checklist

• ☐ Catch up on every entry through December 31
• ☐ Fix rows with no category
• ☐ Reconcile December against your bank statement
• ☐ Run the yearly profit and loss
• ☐ Check receipts for the bigger expenses
• ☐ Total your business miles
• ☐ Count inventory, if you sell products
• ☐ Match tax forms to your records when they arrive
• ☐ Back up the year and start a new file

The steps below walk through each one.

Step 1: Catch up on every entry through December 31

Go through your bank account, card statements and payment apps for the months you haven't logged yet. Add every sale, fee, refund and expense dated on or before December 31. Anything dated January 1 or later belongs in next year's file.

If you're months behind, do it one month at a time, oldest first. Weekly Bookkeeping Routine for a Small Business (20 Minutes) helps keep next year from piling up the same way.

Step 2: Fix rows with no category

Filter or sort your records by category and look for blanks or a catch-all like "misc." Give each one a real category. If you're not sure where something goes, How to Sort Small Business Expenses Into Categories has a simple starting list.

Example (made-up numbers): a year-end check finds four rows with no category.

In this example, $312 of expenses would have been missing from the category totals if those rows stayed blank.

Step 3: Reconcile December against your bank statement

Compare December's records to your December business bank statement, line by line, so the year ends on a number that matches the bank. How to Reconcile a Business Bank Account Each Month walks through it. If you never reconciled earlier months, at least check that your year's total deposits roughly match the deposits on your statements.

Step 4: Run the yearly profit and loss

Add up income and expenses for the full year, by category.

Example (made-up numbers):

In this example, the net profit margin is about 62.9% ($24,150 ÷ $38,400). Compare each category to last year if you have it, and look twice at anything that changed a lot. A big jump can be real, or it can be a duplicate entry. Simple Profit and Loss Statement for a Small Business explains how to read each line.

Step 5: Check receipts for the bigger expenses

Your spreadsheet is the summary; receipts and invoices are the proof. Spot-check the larger expenses and anything you plan to treat as a business expense, and make sure you can find a receipt, invoice or statement line for each. Keep them in one place per year, like a folder with one subfolder per month. Save email receipts as files or in one email folder. How to Organize Business Receipts (Simple System) shows a simple setup and how long the IRS says to keep records.

How long to keep records depends on your situation. IRS Publication 583 explains the general rules; ask a tax professional if you're unsure.

Step 6: Total your business miles

If you drive for the business and keep a mileage log, add up the business miles for the year and note the odometer reading at the start and end of the year if your log has it. Mileage rules and rates change, so check current IRS guidance or ask a tax professional before using a number. How to Track Car Mileage for Taxes covers what a log usually includes.

Step 7: Count inventory, if you sell products

If you sell physical products, do a count close to December 31 and write down what's on hand and what it cost you. How to Set Up a Simple Inventory Count for a Small Shop has a simple method. If you only sell services, skip this step.

Step 8: Match tax forms to your records when they arrive

Early in the new year, some clients and payment platforms send tax forms, such as a Form 1099-NEC or 1099-K, that report what they paid you. When one arrives, compare it to your income records for that client or platform. If the numbers don't match, find out why (a refund, a fee, a payment dated in a different year) and note it for your tax preparer. Don't wait for forms to report income; your own records are what count.

Step 9: Back up the year and start a new file

Save a copy of this year's file with the year in the name, like "Bookkeeping 2026 final," and keep it with that year's receipts folder. Then start a fresh file for the new year with the same categories, so year-over-year totals are easy to compare. Put a reminder on your calendar to start your weekly routine in the first week of January.

Common snags

• Mixing years. A December sale paid in January needs one consistent rule; ask a tax professional which method fits you, then stick with it.
• Leaving "misc." as a big category. It makes your totals harder to use and harder to explain.
• Deleting old files. Keep the final copy of each year; don't overwrite it with next year's entries.
• Personal spending mixed in. If personal purchases went through the business account, mark them so they don't count as expenses. Separate Business and Personal Money for a Side Hustle helps keep next year cleaner.

A spreadsheet for the year

You can do this in any spreadsheet. If you'd like one ready-made, the Small Business Bookkeeping Spreadsheet ($12, Excel and Google Sheets) has a transactions tab with room for 1,500 entries and category dropdowns, and fills in a monthly and yearly profit and loss with a warning if any row is missing a category, plus a tax summary that totals the expenses you marked deductible, by category, to hand to your tax preparer. It tracks one business and one year per file, so you make a copy for each new year. It doesn't connect to your bank or reconcile for you, and it's a record-keeping tool, not accounting software or tax advice (details).

Honest note: I make this spreadsheet and sell it under Cedar & Ledger, so I'd earn from a purchase. General information only, not tax, legal, accounting or financial advice.

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Related template: read about the small business bookkeeping template

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