Year-End LLC Housekeeping: The 12-Point Close-Out Every Founder Should Run

Updated: August 2026 · Industry Advisors · Education, not legal or tax advice.

A clean tax year is not made in April. It is made between mid-November and December 31. Twelve tasks — most take under an hour each — separate the LLC owner who spends 6 hours with their preparer from the one who spends 30 and pays a rush surcharge.

Here is the close-out list. Run them in order. What follows assumes you have been keeping current books; if you have not, add roughly 8–12 hours before you start.

01 · Reconcile Every Bank And Credit-Card Statement Through November

Pull each account from January 1 through November 30. Every transaction should be categorized. Every transfer should be matched. Any line item you cannot identify goes on a research list you resolve before December 31 — waiting until April guarantees a memory-fade and a higher preparer bill.

02 · Run A Year-To-Date P&L And Balance Sheet

Pull both reports as of November 30. The P&L tells you what you owe. The Balance Sheet tells you what is on your books — including whether owner distributions, contributions, and equity accounts reconcile. Founders often forget the Balance Sheet exists until an auditor asks for it.

03 · Review The Operating Agreement

Has ownership changed? Have you added members, bought someone out, changed profit-sharing percentages, or changed officer roles? Update the Operating Agreement before December 31 and record the change in your corporate minutes. This is the single document courts look to when someone challenges the LLC's liability shield. Stale documents read as a lack of formality.

04 · Update The Equity Ledger

For every capital contribution, distribution, and ownership transfer during the year, confirm the ledger matches the bank record. For multi-member LLCs, the K-1 issued next spring is only accurate if the ledger is accurate now.

05 · Compile The Mileage Log

If you deduct vehicle expenses, the IRS wants a contemporaneous log — date, purpose, miles. Reconstructing 11 months of mileage from memory in April is how deductions get disallowed under audit. Even a simple spreadsheet or mileage app export, printed and dated, is enough. Federal standard mileage rate for 2026 is roughly $0.68/mile; confirm the current published rate before you compute.

06 · Gather 1099-NEC Data

Every contractor paid $600 or more during the year needs a 1099-NEC by January 31. Pull the vendor list from bookkeeping, confirm each contractor has a signed W-9 on file with their taxpayer ID, and address any missing forms in December. Missing W-9s are the number-one reason 1099s go out late — and late 1099s carry penalties typically $60–$310 per return depending on how late.

07 · Retirement-Account Setup And Contributions

Solo 401(k) accounts must be established by December 31 to allow employee-deferral contributions for the current year (the actual contribution can happen up to your extended tax deadline). SEP IRAs are more forgiving — they can be opened and funded up to the extended deadline. Whichever plan you use, if it does not exist by year-end, the employee-deferral bucket is closed.

08 · Insurance Renewals — Walk Through, Do Not Auto-Renew

General liability, professional liability, cyber, and workers' comp if applicable. Pull the declarations page, compare limits against the current-year revenue and headcount. Auto-renewing without review is how founders end up under-insured. Two to three weeks lead time is usually enough to shop the renewal.

09 · Registered-Agent And Business-License Renewals

Confirm the registered-agent service is paid through the next 12 months in every state you are registered in. Confirm every municipal or state business license is current — many run on a calendar-year basis and lapse December 31.

10 · Home-Office And Asset Review

If you deduct a home office, confirm the square-footage calculation and pull the current-year utility totals. If you bought equipment during the year — laptops, cameras, furniture — decide with your preparer whether to deduct under Section 179, bonus depreciation, or de minimis. That decision has to be documented before the return is filed.

11 · Q4 Estimated-Tax Final Pass

Adjust the January 15 payment based on your November P&L. If revenue spiked in Q3 or Q4, the safe-harbor number based on last year's tax may not cover — catch up on the Q4 payment rather than absorb the underpayment penalty at April. If revenue dropped, you may safely reduce the Q4 payment. Either way, the decision is made now, not later.

12 · Books Close And Archive

On the last business day of the year, run the final reconciliation, lock the accounting period, and archive one folder containing:

• Trial balance, P&L, and Balance Sheet as of December 31
• All 12 months of bank and credit-card statements
• Payroll register if applicable
• 1099 contractor list with signed W-9s
• Mileage log
• Receipt folder for any deduction over $75
• Updated Operating Agreement and cap-table ledger
• Registered-agent, insurance, and license confirmations

Zip it. Store it somewhere your tax preparer can access in one link. That is the whole year, in one folder, ready for the March or April return.

The Rush-Surcharge Math

Preparer rates typically climb 30–60% between February and April 15. A return that costs $800 if delivered clean in early February can cost $1,200–$1,600 at April rush pricing — plus the risk of the extended-deadline scramble. The 12 items above are the difference between the two.

The Everyday Owner's Blueprint includes this checklist as a printable one-pager, plus the 12-month recurring compliance calendar and the year-end archive template.

Industry Advisors · 30 Wall Street, New York, NY 10005. Education, not legal or tax advice.