5 Tax Red Flags to Fix Before Q4

Key Takeaways

• Review your estimated tax payments against current net income to ensure you've paid at least 90% of your current year liability or 100% of last year's liability.
• Verify that every worker classified as a 1099 contractor meets the behavioral and financial control tests defined by the Department of Labor to avoid back taxes.
• Reconcile all personal funds used for business expenses by June 30th to maintain the corporate veil and prevent audit triggers.
• File your FinCEN Beneficial Ownership Information report immediately if you haven't already to avoid the $591 daily non-compliance fine.

A landscaping company in Atlanta with six employees realized in June that their 'freelance' designer was actually an employee by legal standards. Because they caught the misclassification before the year ended, they adjusted their payroll filings and avoided thousands in late-filing penalties and unpaid unemployment insurance. If they had waited until tax season, the IRS and the Department of Labor would have been the ones finding the error for them.

The Mid-Year Correction Window

Most business owners treat tax season like a post-mortem, looking at what went wrong months after it's too late to fix. This is a mistake that drains cash. By performing a mini-audit at the halfway point of the year, you can spot errors while you still have two full quarters to adjust your withholding or spending. The goal isn't just to be accurate. It's to ensure you aren't giving the government an interest-free loan or, conversely, setting yourself up for a massive surprise bill next April. If your revenue has jumped 20% since January, your Q3 tax provision account is likely underfunded. You need to look at your profit and loss statement today, not next March.

1. The Contractor Misclassification Trap

The IRS and the Department of Labor have sharpened their focus on how small businesses use 1099 contractors. If you provide the equipment, set the specific hours, and are the worker's only source of income, the government generally views them as an employee. Misclassifying these workers leads to massive bills for unpaid Social Security and Medicare taxes. Review the IRS guidance on independent contractors to ensure your 1099s aren't actually W-2s in disguise. Fix this now by converting them to payroll or adjusting their contracts to meet the 'independence' criteria.

2. The Comingling of Funds

You probably used your personal Chase card for a business software subscription or a Home Depot run in a pinch. It happens. But if those transactions stay on your personal statement, you lose the deduction and weaken your LLC's legal protection. Scour your personal accounts for any business spend from January to June. Move those amounts into your bookkeeping software now. If you need to clean up your banking, consider how to open a business checking account with $100 to keep things separate moving forward.

3. Underfunded Estimated Payments

If your business is growing, last year's safe harbor payment mightn't be enough to stop the underpayment penalty. The IRS requires you to pay as you go. Check your total payments against your projected year-end profit. If you're falling behind, increase your Q3 and Q4 vouchers to hit at least 90% of what you'll owe. You can manage these payments through the official IRS EFTPS system to ensure they're tracked correctly. Dealing with this in June is much easier than finding $15,000 in cash next April.

4. Missing Beneficial Ownership Reports

This is the biggest administrative red flag of the year. Most LLCs and corporations must file a Beneficial Ownership Information (BOI) report with FinCEN. If you formed your business before 2024, your deadline is approaching fast. If you formed it this year, you only have 90 days from registration. The fines are currently $591 per day for non-compliance. Follow the fincen.gov BOI reporting guide to get this done in under 20 minutes. Don't let a simple form cost you your annual profit.

5. Unreconciled 'Owner's Draw'

If you're taking money out of the business to pay your mortgage, make sure it's recorded as a distribution or a draw, not a business expense. Mislabeling a draw as 'consulting fees' or 'office supplies' is a fast track to an audit. Audit your 'Misc' and 'General Expense' categories in QuickBooks or Xero. If a transaction doesn't have a receipt and a clear business purpose, reclassify it correctly before you hand your books to a CPA.

Cleaning up these five areas will take you roughly two hours this weekend.

Total cost: $0. Potential savings: thousands in penalties and a much lower stress level when Q4 hits. Compare your profit and loss statement to your bank balances today.

Related free tool

Personalized Tax Deadline Tracker — Pick your entity + state, get a personalized deadline list. Free, no signup to start.

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📋 Disclaimer

This article is for informational purposes only and does not constitute legal, tax, financial, or professional advice. Laws and regulations change frequently, and the information presented may not reflect the most current legal developments. Always consult with a qualified professional (CPA, attorney, financial advisor) before making business decisions based on this content. MyBizNerd may receive compensation through affiliate links, but this never influences our recommendations.

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