Year-End Tax Prep Checklist for Small Businesses | Tulsa Tax Tips 2025

As 2025 winds down, small business owners in Tulsa and across Oklahoma are preparing for tax season. Year-end tax prep isn’t just about compliance — it’s about saving money, reducing stress, and setting your business up for success in 2026. If you need personalized guidance, contact Keen’s Tax Service for support.

✅ Step 1: Reconcile accounts

Confirm your books match bank statements, invoices, and receipts. Reconciling now prevents surprises and keeps your financial records accurate for filing. Reconcile monthly to catch discrepancies early and maintain clean reports.

Questions about categorizing transactions or fixing discrepancies? Contact Keen’s Tax Service for help setting up consistent workflows.

📂 Step 2: Organize deductions

Gather documentation for deductible expenses such as:

Home office costs: Rent, utilities, and internet proportionate to business use
Mileage logs: Business travel tracked with dates, purpose, and miles
Supplies and software: Office supplies, accounting software, subscriptions
Charitable contributions: Donations made before December 31

Review official IRS guidance on deducting business expenses to ensure your records align with current rules.

Want a quick check on whether an expense is deductible? Contact Keen’s Tax Service for a review before you file.

📊 Step 3: Review payroll (W‑2s and 1099s)

Confirm W‑2s for employees and 1099s for contractors are accurate before January deadlines. Common mistakes include incorrect Social Security numbers, late submissions, or missing contractor forms.

Not sure who should receive a 1099? See IRS rules on independent contractors.

If you need help verifying recipient info or setting up e‑file, contact Keen’s Tax Service for filing support.

💡 Step 4: Plan for estimated taxes

Check quarterly payments and adjust if needed to avoid IRS penalties. If you’ve had a profitable year, consider an additional payment before December 31 to reduce liability.

Confirm due dates on the Oklahoma Tax Commission site and review IRS guidance for estimated taxes.

Need a quick projection to avoid underpayment penalties? Contact Keen’s Tax Service to run estimates.

🕒 Step 5: Schedule a year-end review

A year-end review can uncover overlooked deductions, ensure clean books, and prepare you for IRS changes in 2026. Tulsa small businesses benefit from local insight and tailored advice.

Book your review now: Contact Keen’s Tax Service.

🎯 Bonus tip: Prepare early for 2026

Set up simple systems now — monthly expense reviews, mileage tracking apps, and receipt management — so next year’s filing is faster and less stressful. Document policies for reimbursements and contractor onboarding to keep data consistent all year.

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