14 Legal Tax Savings Tips for Under $400k Earners (CPA Guide)

Maximize Your Tax Savings Legally

As a CPA, I've analyzed Brian Kim's expert advice on legal tax reduction for earners under $400k annually. This isn't about magic tricks or offshore accounts—it's practical strategies that respect IRS rules while keeping more money in your pocket. If you've ever felt frustrated watching taxes eat into your hard-earned income, these 14 actionable methods will transform your approach. Remember: Always consult your personal accountant before implementing tax strategies, as individual circumstances vary.

Workplace Benefit Strategies

Commuter benefits offer immediate savings. For 2023, allocate up to $300 monthly pre-tax dollars toward:

Public transit (trains, subways, buses)
Ride-shares (Uber/Lyft)
Parking facilities
This creates a $3,600 annual deduction—money that stays yours rather than funding the IRS.

Retirement contributions directly lower taxable income. Prioritize:

401(k) plans (for-profit employees)
403(b) plans (government/nonprofit workers)
Every dollar contributed reduces your current tax burden while building future security.

Health Savings Accounts (HSAs) deliver triple tax advantages when paired with high-deductible health plans:

Contributions are tax-deductible
Growth compounds tax-free
Qualified medical withdrawals avoid taxes
Unlike flexible spending accounts (FSAs), HSAs have no "use-it-or-lose-it" rule, making them superior long-term tools.

Investment & Reporting Tactics

Capital loss harvesting remains underutilized, especially with cryptocurrency. Many investors forget to report crypto losses since brokers don't issue 1099-B forms automatically. Document every loss—they directly offset capital gains.

Long-term holding strategies slash investment taxes. Assets held over 1 year qualify for preferential rates:

0% federal tax if income is below $44,625 (single) or $89,250 (married) in 2023
Maximum 20% rate vs. ordinary 37% top bracket

1099-B form audits prevent overpayment. Brokerage statements often contain errors like:

Missing cost basis (making entire sale appear as profit)
Unreported margin interest deductions
Review these forms meticulously—correcting mistakes could save thousands.

Special Circumstance Opportunities

Gambling loss offsets provide relief when you win. Casinos report winnings via W-2G forms, but you can deduct:

Slot machine losses
Table game deficits
Sports betting losses
Keep detailed records to substantiate these claims.

Minimal rental use rule benefits Airbnb hosts. Rent your primary residence ≤14 days annually and:

Rental income becomes 100% tax-free
No depreciation complications
This "Augusta Rule" is perfect for occasional renters.

State-specific 529 plans offer education savings advantages. While no federal deduction exists, 34 states provide tax benefits for contributions. Even in non-deduction states like California, earnings grow tax-free when used for qualified expenses.

Implementation Checklist

Adjust W-4 withholding if you owe penalties
Maximize HSA contributions before FSA options
Audit 1099-B forms for cost basis errors
Document gambling losses contemporaneously
Track rental days to utilize the 14-day rule

Pro Tip: Schedule a mid-year tax review with your CPA. Small adjustments now prevent surprises at filing time.

Beyond the Basics

While Kim's video covers essential strategies, I recommend exploring these additional opportunities:

Solo 401(k)s for side gigs (allow $22,500 + 25% employer contributions)
Donor-advised funds to bundle charitable deductions
Tax-loss harvesting in volatile markets

Which strategy will you implement first? Share your biggest tax pain point below—I'll respond with tailored suggestions!