Most Americans treat tax planning as a once-a-year scramble in April. The clients who consistently pay the least in taxes do something different: they plan all year long.

After nearly four decades of helping individuals and businesses across all 50 states, our team has identified the strategies that make the biggest difference. Here are seven that our CPAs return to again and again.

1. Maximize Retirement Account Contributions

Contributing to a 401(k), IRA, or SEP-IRA is one of the most straightforward ways to reduce your taxable income. For 2024, the 401(k) contribution limit is $23,000 (or $30,500 if you're 50 or older). Every dollar you contribute pre-tax is a dollar that doesn't get taxed this year.

If you're self-employed, a SEP-IRA lets you contribute up to 25% of net self-employment income — a powerful tool that many business owners underutilize.

Action step: Review your contribution levels in Q3 each year, while you still have time to adjust payroll deductions before year-end.

2. Time Your Income and Deductions Strategically

If you have flexibility over when you receive income or pay deductible expenses, timing matters enormously. If you expect to be in a lower tax bracket next year, deferring income to January can shift that tax bill forward by 12 months.

Conversely, if you expect higher income next year, accelerating deductions into the current year — prepaying business expenses, making charitable contributions in December — can reduce this year's bill.

Action step: In October or November, project your full-year income and compare it to next year's expected income. Then decide whether to accelerate or defer.

3. Harvest Tax Losses in Your Investment Portfolio

Tax-loss harvesting means selling investments that have declined in value to offset capital gains elsewhere in your portfolio. If your losses exceed your gains, you can deduct up to $3,000 against ordinary income — and carry forward any remaining losses to future years.

This strategy requires careful attention to the "wash-sale rule," which disallows the loss if you repurchase the same or substantially identical security within 30 days before or after the sale.

Action step: Review your investment portfolio in November and identify positions with unrealized losses that could offset gains you've already realized.

4. Take Full Advantage of Business Deductions

If you own a business, the tax code offers a wide range of deductions that many owners miss or underuse:

• Section 179 expensing: Deduct the full cost of qualifying equipment and software in the year of purchase rather than depreciating it over time.
• Home office deduction: If you use part of your home exclusively and regularly for business, you may deduct a proportionate share of mortgage interest, utilities, and insurance.
• Vehicle expenses: Track business mileage carefully. At the 2024 standard mileage rate of 67 cents per mile, a vehicle driven 15,000 business miles generates a $10,050 deduction.
• Health insurance premiums: Self-employed individuals can deduct 100% of health insurance premiums for themselves and their families.

Action step: Work with a CPA to build a deduction checklist specific to your business type and review it quarterly.

5. Consider a Health Savings Account (HSA)

If you're enrolled in a high-deductible health plan, an HSA offers a triple tax advantage: contributions are tax-deductible, growth is tax-free, and withdrawals for qualified medical expenses are tax-free. No other account in the tax code offers all three.

For 2024, you can contribute up to $4,150 for self-only coverage or $8,300 for family coverage. Funds roll over year to year — there's no "use it or lose it" rule — making an HSA a powerful long-term savings vehicle as well.

Action step: If you're eligible, maximize your HSA contribution before April 15 of the following year (contributions for the prior tax year are allowed until the filing deadline).

6. Review Your Business Entity Structure

The way your business is structured has a direct impact on your tax bill. A sole proprietor pays self-employment tax on all net profits. An S-corporation can split income between salary (subject to payroll taxes) and distributions (not subject to payroll taxes), potentially saving thousands per year.

As your business grows, the optimal structure often changes. A business generating $50,000 in profit may be fine as a sole proprietorship. The same business at $200,000 in profit may benefit significantly from S-corp election.

Action step: If your business net income has grown substantially in the past two years, ask your CPA to model the tax impact of different entity structures.

7. Plan for Estimated Tax Payments

If you're self-employed, a freelancer, or have significant investment income, you're required to make quarterly estimated tax payments. Underpaying can result in penalties — even if you pay the full amount by April 15.

The safe harbor rule protects you from underpayment penalties if you pay at least 100% of last year's tax liability (or 110% if your prior-year AGI exceeded $150,000) in equal quarterly installments.

Action step: Set a calendar reminder for the four estimated tax due dates: April 15, June 15, September 15, and January 15.

The Bottom Line

Effective tax planning isn't about finding loopholes — it's about understanding the rules well enough to use them fully. The strategies above are legal, well-established, and available to most taxpayers. The difference between those who use them and those who don't is usually just having the right advisor in their corner.

If you'd like to review your current tax situation and identify opportunities you may be missing, our team offers a complimentary 30-minute consultation. We've been helping clients across all 50 states keep more of what they earn since 1986.