Year-End Tax Planning Checklist: Strategies Florida Businesses Must Execute Before December 31

Max Out Section 179 and Bonus Depreciation Deductions

Section 179 expensing allows business owners to deduct the full purchase price of qualifying equipment, machinery, technology, and vehicles acquired during the tax year. Instead of depreciating an asset over 5 or 7 years, you deduct the entire expense immediately against your net profit.

Under current tax rules, qualifying vehicles with a Gross Vehicle Weight Rating (GVWR) exceeding 6,000 pounds — including many full-size commercial trucks and heavy SUVs — also qualify for substantial first-year deductions when used more than 50% for business.

The critical rule business owners often overlook: equipment must be placed in service by 11:59 PM on December 31. Ordering equipment or putting down a deposit on December 28 does not qualify if delivery or installation happens in January.

Finalize S-Corp Reasonable Salary and Owner Distributions

If your business operates as an S-Corporation, October is the time to calculate your projected annual net income and compare it against your year-to-date W-2 wages. The IRS requires shareholder-employees to be paid "reasonable compensation" before taking distributions.

If your business had a stronger-than-expected Q3, your current salary may look unreasonably low in the eyes of an IRS auditor. Adjusting your payroll or processing a year-end bonus payroll in November or December ensures compliance before W-2s and Form 941 filings are generated.

• Compare year-to-date owner salary against industry benchmarks and total business profit
• Ensure payroll taxes (FICA and federal withholding) are remitted on schedule
• Coordinate distribution withdrawals so they do not exceed shareholder stock and debt basis
• Account for health insurance premiums paid on behalf of 2% shareholders on your W-2

Fund Qualified Retirement Plans for Immediate Tax Relief

Retirement plan contributions are one of the most effective ways for high-earning business owners to lower their adjusted gross income while building personal wealth outside the business.

For sole owners and owner-only S-Corps, a Solo 401(k) allows both employee elective deferrals and employer profit-sharing contributions. Depending on your age and income, you can shelter tens of thousands of dollars in pre-tax earnings.

For businesses with significant profits ($250,000+), pairing a 401(k) with a Cash Balance Defined Benefit Plan can unlock annual tax deductions between $100,000 and $300,000+, depending on owner age and compensation.

Manage Income and Expense Timing

Most small businesses operate on a cash accounting basis, meaning income is counted when received and expenses are counted when paid. This gives you direct control over timing in the final weeks of the year.

If you anticipate being in a higher tax bracket this year than next, consider accelerating deductible expenses into December: replenish office inventory, renew annual software licenses, pay outstanding vendor invoices, or pre-pay January rent under the IRS 12-month rule.

Conversely, if your tax rate will increase next year, you may want to accelerate client invoicing in December to recognize revenue at current-year tax rates.

Review Your Qualified Business Income (QBI) Deduction Position

The Section 199A QBI deduction allows eligible pass-through owners to deduct up to 20% of their qualified business net income. However, for Specified Service Trades or Businesses (SSTBs) — such as consultants, attorneys, physicians, and financial advisors — the deduction phases out at higher taxable income thresholds.

Strategic year-end deductions (like accelerated equipment depreciation or pension contributions) can pull your overall taxable income back below the phase-out limit, restoring thousands of dollars in QBI deductions that would otherwise be lost.

Schedule Your Year-End CPA Review Early

The most successful tax planning happens when you sit down with actual 9-month financial numbers and clear projections for Q4. By November and December, CPA calendars fill up quickly, and implementing complex retirement plans or restructuring transactions requires lead time.

At MDR Consulting CPA, we model your year-end numbers well before December 31, ensuring you know your exact tax liability and have actionable steps to reduce it before the books close.

Have Questions About Your Situation?

Schedule a free 20-minute consultation with MDR Consulting CPA. We will review your specific situation and send a flat-fee proposal within 24 hours — no commitment required.