Tax Planning
Gilles Hudelot
AFC®, CFP®, CRPS®
Don't Leave Money on the Table: Your 2025 Tax Deductions Guide
New tax laws mean new deductions — and most people don't know what they qualify for. Here's a plain-language look at what changed in 2025 and what to claim before you file.
Are you doing your taxes right now, staring at a pile of W-2s and 1099s, wondering if there's a way to make this whole thing less painful? Same.
The tax code is dense and it changes constantly. Most people file, hope for the best, and move on. But this year there's actual new money on the table — federal legislation signed in 2025 introduced deductions for overtime workers, tipped employees, and people who financed a car. Plus, there are the classics most filers sleep on every year. Here's a look at both.
Why tax deductions matter
A tax deduction reduces the income that actually gets taxed. Not a dollar-for-dollar refund, but close enough to matter. If you're in the 22% tax bracket and find $1,000 in deductions you hadn't claimed, that's $220 back. Some deductions bring down your Adjusted Gross Income (AGI) before you even decide between itemizing or taking the standard deduction. Others apply regardless. Both kinds work in your favor.
The tax deductions you might already be missing
Retirement contributions
Even with a 401(k) at work, you may still be able to contribute to a Traditional IRA and deduct it. The IRS allows contributions up until the tax filing deadline, so there's still time to fund an IRA for 2025 and bring down this year's taxable income, even now.
Income under $39,500? (Or $79,000 filing jointly?) You might also qualify for the Saver's Credit, up to $1,000 for single filers and $2,000 for couples, just for contributing to retirement. You'll need your W-2 and Form 5498 to document it.
Health Savings Account (HSA) contributions
If you're enrolled in a qualifying high-deductible health plan, a Health Savings Account (HSA) is one of the most tax-efficient accounts available and a lot of people aren't using it anywhere close to its potential. Contributions bring down your AGI dollar-for-dollar, up to $4,300 for individuals or $8,550 for families in 2025. And like IRAs, the contribution window stays open until the filing deadline.
Home office deduction
Self-employed, freelance, gig work? If part of your home is used regularly and exclusively for business, this one's worth a look. The simplified method is $5 per square foot up to 300 square feet — a clean $1,500 without tracking a single utility bill. But "exclusively" is doing a lot of work in that sentence. A spare room that doubles as a guest bedroom probably won't hold up. A dedicated workspace can.
Student loan interest
Up to $2,500 in student loan interest paid during the year is deductible, and this applies even if your parents made payments on your behalf, as long as you're not claimed as a dependent on their return. Your servicer should send a Form 1098-E with the interest total. And if you paid for career-related coursework too, the Lifetime Learning Credit could add up to another $2,000 per return.
New tax legislation in 2025: Recent updates that may affect your return
Overtime pay deduction
Worked a lot of overtime this year? There's a new deduction for that. The legislation made the "premium" portion of qualified overtime income deductible — that's the extra "half" in time-and-a-half. Up to $12,500 for single filers, $25,000 for joint filers. It phases out above $150,000 in modified AGI (MAGI) ($300,000 for joint filers).
Here's the catch: because this was signed mid-year, your W-2 probably won't show the overtime premium as its own line. You'll likely need your pay stubs to calculate it, which is kind of annoying but doable.
Tips deduction
Tipped workers in qualifying occupations can deduct up to $25,000 in qualified tips from taxable income for 2025 through 2028. The IRS put out a list of qualifying occupations in September 2025 covering service, hospitality, and other traditionally tipped roles. Same phaseout thresholds as the overtime deduction. Keep your tip logs or Form 4137.
Auto loan interest deduction
First time in decades this has been available. Interest paid on a personal vehicle loan may now be deductible, but there are hoops. The vehicle has to be for personal use, the loan has to have originated after December 31, 2024, and the car needs to meet certain assembly criteria. IRS guidance points to the NHTSA VIN Decoder to check eligibility. Lease payments don't count. Caps at $10,000, phases out at $100,000 modified AGI ($200,000 for joint filers).
Charitable contributions for standard deduction filers
This one's actually a 2026 change, not 2025 — but good to have on your radar now. Starting next tax year, non-itemizers can deduct up to $1,000 in cash donations ($2,000 for married filing jointly) without needing to itemize. It becomes a permanent above-the-line deduction under the new law. If you give regularly but have never seen a tax break for it, that changes next year. Contributions to donor-advised funds don't qualify; hold onto receipts and written acknowledgment from any 501(c)(3).
Quick reference
Deduction | Max (single) | Max (married) | What you'll need |
|---|---|---|---|
Overtime premium | $12,500 | $25,000 | W-2 & pay stubs |
Tips | $25,000 | $25,000* | Tip logs / Form 4137 |
Student loan interest | $2,500 | $2,500* | Form 1098-E |
Auto loan interest | $10,000 | $10,000* | Loan statement & VIN |
HSA contributions | $4,300 | $8,550 | HDHP enrollment |
Saver's Credit | $1,000 | $2,000 | W-2 or Form 5498 |
Per return, not per taxpayer. Income phaseouts apply, so check IRS guidance for your specific situation.
Where to start
AGI first. Retirement and HSA contributions bring down your AGI before anything else gets calculated. A lower AGI can unlock credits and benefits you'd otherwise be phased out of, so it's worth starting there.
Check your VIN. If you're looking at the auto loan interest deduction, run it through the free NHTSA VIN Decoder before claiming anything. Eligibility isn't guaranteed just because you bought the car recently.
Keep the paper trail. Scan receipts, save tip logs, hold onto loan statements. For donated goods, a photo and a fair market value estimate will back up your claim.
Don't assume your W-2 has everything. The overtime and tip deductions are new. Employers and tax software are still catching up, and your form may not reflect everything you're entitled to.
Tax season doesn't have to be something that just happens to you. A little prep can turn it into a real chance to see where you stand and claim what you've actually earned. If anything here raises questions about your specific return, a qualified tax professional can help you sort through it.
This content is for educational purposes only and does not constitute tax advice. Tax laws are complex, and individual circumstances vary. Consult a qualified tax professional for guidance specific to your situation.
