Year-End Close Checklist: How to Close Your Books for 2026 and Start 2027 Clean

Last updated: October 26, 2026

If you are closing your books for 2026 with last year’s year-end close checklist, at least four items on it are now wrong. The 1099 threshold moved, the IRS changed the system you file through, the mileage rate changed halfway through the year, and one reporting requirement that appeared on every checklist since 2024 no longer applies to U.S. companies. This guide walks through the full year-end close in the order the work is done, starting with what changed.

A year-end close checklist covers reconciling every balance sheet account, cleaning up receivables and payables, verifying inventory and fixed assets, recording adjusting entries, preparing 1099s and W-2s, reviewing the financials, and locking the period. For tax year 2026, three things changed: the 1099-NEC and 1099-MISC threshold rose from $600 to $2,000, the IRS is retiring the FIRE e-filing system in favor of IRIS, and business mileage is split between 72.5 cents per mile through June 30 and 76 cents from July 1.

Want the printable version? Download the 2026 Year-End Close Checklist and work through it alongside this guide.

What Is a Year-End Close?

The year-end close is the process of finalizing your books for the fiscal year. You reconcile every account, record adjusting entries, verify balances and lock the period, so the numbers can support tax filings, lender reporting and next year’s budget. Clean books are what keep tax preparation affordable, make due diligence survivable and give you reporting you can trust in 2027.

What Is Different About Closing 2026

Most year-end content still circulating online was written for 2025. Four changes make that content unreliable this year, and each one affects a specific step of your close.

The 1099-NEC and 1099-MISC Threshold Is Now $2,000

The One Big Beautiful Bill Act raised the reporting threshold for Forms 1099-NEC and 1099-MISC from $600 to $2,000, effective for payments made after December 31, 2025. Tax year 2026 is the first year the new figure applies, and the threshold begins adjusting for inflation in 2027. A contractor you paid $1,500 this year may have received a 1099 from you last year and will not need one now. Our 1099 filing guide covers who still needs a form.

The IRS Is Retiring FIRE, and IRIS Needs Its Own Credentials

The IRS will stop accepting information returns through its FIRE system at 3 p.m. ET on November 19, 2026. From January 1, 2027, every information return filed electronically, including tax year 2026 returns and corrections, goes through the Information Returns Intake System, known as IRIS. Your FIRE Transmitter Control Code does not carry over, so you need an approved IRIS Application for Transmitter Control Code before you can file. The IRS FIRE retirement page lists the key dates.

The 2026 Mileage Rate Has Two Halves

In its first mid-year adjustment since 2022, the IRS raised the business standard mileage rate from 72.5 cents per mile to 76 cents per mile for travel on or after July 1, 2026. Miles driven from January 1 through June 30 use the lower rate, and miles from July 1 through December 31 use the higher one. Your mileage log has to show the split, and a reimbursement policy that used one rate for the whole year needs a true-up.

BOI Reporting Is No Longer Required for U.S. Companies

FinCEN issued a final rule in August 2026 that permanently eliminated beneficial ownership information reporting for U.S. companies and U.S. persons under the Corporate Transparency Act. If your checklist still tells you to file or update a BOI report, remove that line. The requirement now applies only to certain foreign entities registered to do business in the United States, and FinCEN’s BOI page has the current guidance.

Step 1: Reconcile Every Balance Sheet Account

Start the year-end close checklist with the balance sheet, because almost every other step depends on it. Reconciling only the bank account leaves the rest of the balance sheet unverified, and the errors you find later will push you back to this step anyway.

• Reconcile every bank and credit card account through December 31, 2026, and clear stale uncleared items instead of carrying them into 2027.
• Clear the undeposited funds account in QuickBooks. Payments that were received but never matched to a deposit are the most common year-end mess we see, and they overstate both cash and income until they are fixed.
• Tie loans and lines of credit to lender statements, with each payment split correctly between principal and interest.
• Reconcile payroll liabilities to the payroll returns you have already filed.
• Drive credit card clearing accounts, suspense accounts and any “ask my accountant” account to zero.

Step 2: Clean Up Accounts Receivable and Payable

Run your accounts receivable aging and resolve anything older than 90 days. Either collect it or write it off deliberately, because an old balance you will never collect inflates your assets and your income. Then confirm your accounts payable cutoff so that December expenses land in December, even when the bill arrives in January. While you are in both ledgers, look for customer credits that were never applied, unapplied payments and duplicate vendor records, which tend to cause problems again at 1099 time.

Step 3: Verify Inventory, Fixed Assets and Depreciation

If you carry inventory, count it, adjust your books to the actual count and document the cutoff date you used. For fixed assets, prepare a rollforward that shows the opening balance, additions, disposals and the gain or loss on anything you sold or retired, then record depreciation for the year.

This step also has a deadline that sits outside your books. For tax years beginning in 2026, the Section 179 deduction limit is $2,560,000, and it begins to phase out once qualifying purchases exceed $4,090,000, according to IRS Publication 946. Qualified property acquired after January 19, 2025 is also eligible for 100% bonus depreciation. Whether to use Section 179, bonus depreciation or regular depreciation is a decision for your tax preparer. What this checklist can tell you is when to have that conversation: before December 31, while there is still time to place an asset in service.

Step 4: Record Year-End Adjusting Entries

Adjusting entries bring your books in line with what actually happened during the year. Record accruals for expenses you incurred but have not yet been billed for, and amortize prepaid expenses so that each month carries its share.

Then clean up the owner side of the books. Owner draws and distributions, shareholder loans and any personal expenses paid through the business should be reviewed and reclassified to the right accounts. True up mileage reimbursements to the split 2026 rates, and document the support for every estimate you record, including bad debt and inventory reserves.

Step 5: Prepare for 1099s and W-2s

This is the most time-sensitive step on the page, and most of it can be done now.

• Collect missing W-9s before December ends. Chasing taxpayer identification numbers in late January is where most filing delays begin.
• Apply the new $2,000 threshold when deciding who receives a Form 1099-NEC or 1099-MISC. Payments made by credit card or through a third-party payment network are reported on Form 1099-K by the processor, so you do not issue a 1099 for them.
• Confirm your IRIS access and IRIS Transmitter Control Code well before January. An application that is still pending on February 1 does not stop the deadline.
• Verify employee addresses and reconcile payroll to your Forms 941 before W-2s are generated.

Step 6: Review the Financials Before You Close

Once the reconciliations and adjustments are in, the review step of your year-end close checklist is reading the results. Compare this year’s trial balance to last year’s and investigate every swing you cannot explain. Read the profit and loss statement for expenses in the wrong category, and read the balance sheet for accounts that should not have a balance at all. Confirm that net income flows into retained earnings and that your closing entries are correct.

Use this step to clean up your chart of accounts as well. Merge duplicate accounts and deactivate the ones you no longer use, so your 2027 reporting starts simpler. If no one on your team has the time or background to review the financials at this level, a fractional controller or CFO can provide that review without a full-time hire.

Step 7: Lock the Period and Hand Off to Your Tax Preparer

Set a closing date in QuickBooks and add a closing date password, so no one can change 2026 transactions without authorization after your numbers have been filed. Back up or archive the file, and save your supporting documentation with the close so the numbers can be defended later.

Your tax preparer will need a trial balance, year-end financial statements, bank and credit card reconciliation reports, a fixed asset schedule with additions and disposals, loan statements, payroll reports and inventory counts. The more complete that package is, the less you pay for preparation time.

Key 2027 Deadlines to Calendar Now

Two weekend dates move this year’s federal deadlines. January 31, 2027 falls on a Sunday, which pushes W-2s and 1099-NECs to Monday, February 1, and February 28 is also a Sunday, which pushes paper 1099-MISC filing to March 1.

State deadlines vary, so confirm yours separately. Our guide to 1099 deadlines and penalties for 2027 has the full information return timeline.

How Long Should a Year-End Close Take?

The answer depends almost entirely on what happened in the other eleven months. A business that closes its books every month, reconciles every account and keeps documentation current can usually finish its year-end close checklist in a few days. A business reconciling twelve months of activity at once, chasing missing W-9s and investigating balances no one can explain should plan for several weeks.

That gap is the reason a monthly close matters more than the year-end one. If this year’s close is turning into a long project, outsourced accounting services can take over the monthly reconciliations so that next year’s close is routine.

Signs Your Books Need More Than a Checklist

A year-end close checklist assumes your books are close to right. Some books are not, and the checklist is often how you find out. These are the signs that the problem is bigger than one close:

• Reconciliations that will not tie, no matter how many times you rework them.
• An undeposited funds balance that has grown all year.
• Balance sheet accounts that no one on your team can explain.
• Prior-year numbers that have changed since the return was filed.
• A close that slips later every year.

If you recognize more than one of these, start with a cleanup before you attempt the close. Our QuickBooks clean-up accounting team reconciles the backlog, corrects the history and hands you books you can close from.

Start 2027 With Books You Can Trust

The work in this year-end close checklist is easier now than in late January, and every item you finish now is one less thing standing between you and an on-time filing season. If you want a second set of eyes on where your books stand, book 30 minutes with Nick Aloisio on our team.

Related reading:

• Year-End Tax Planning for Businesses: What Changed for 2026 and What to Do Before December 31
• The 1099 Filing Guide for Small and Mid-Sized Businesses
• 1099 Deadlines and Penalties for 2027: A Year-End Timeline for Business Owners

This article is general information, not tax or legal advice. Out of the Box Technology is not a public accounting firm. Consult your CPA about how these rules apply to your business.