14 Tax Moves Worth Knowing Before You File
- 1. Ride to Work on Pre-Tax Dollars
- 2. Stuff Your 401(k)
- 3. Open an HSA for the Triple Tax Win
- 4. Use Your FSA Before It Expires
- 5. Claim the Bigger Dependent Care Break
- 6. Harvest Your Losses
- 7. Hold Winners Past One Year
- 8. Double-Check Your 1099-B
- 9. Deduct Your Margin Interest
- 10. Know the New Gambling Loss Rules
- 11. Feed a Traditional IRA
- 12. Grow College Money Tax-Free in a 529
- 13. Fix Your W-4
- 14. Rent Your Home Tax-Free for 14 Days
- Wrapping Up
Wondering if you're quietly leaving money on the table at tax time? The tax code is stuffed with perfectly legal discounts — here are 14 of them, updated with the 2026 numbers.
Quick ground rule: most of these moves work by shrinking your taxable income — the slice of your pay the IRS actually gets to tax.
Every dollar you shield is taxed at 0% instead of your top rate. That's the whole trick!
1. Ride to Work on Pre-Tax Dollars
Commuter benefits let you pay for transit passes and parking with money that never gets taxed.
For 2026, you can set aside up to $340 a month for transit and another $340 for parking — over $4,000 a year for each.
How to Do It:
- Ask HR if your employer offers a commuter benefits program; you enroll through payroll, not the IRS.
2. Stuff Your 401(k)
Money you put into a 401(k) — or a 403(b) at a nonprofit — skips today's taxes and grows untaxed until you withdraw it, often in a lower bracket.
For 2026, you can contribute up to $24,500, plus an extra $8,000 if you're 50 or older — and those aged 60 to 63 can add $11,250 instead.
How to Do It:
- Bump your payroll contribution percentage today; even 1% more shrinks this year's tax bill. Details are in our 401(k) guide.
3. Open an HSA for the Triple Tax Win
If you have a high-deductible health plan, a Health Savings Account is the only triple play in the code: money goes in untaxed, grows untaxed, and comes out untaxed for medical costs.
The 2026 caps are $4,400 for self-only coverage and $8,750 for family coverage, plus $1,000 more if you're 55 or older.
How to Check It:
- IRS Publication 969 — the official rulebook for HSAs, in surprisingly readable English.
4. Use Your FSA Before It Expires
A Flexible Spending Account holds pre-tax dollars for health costs insurance doesn't cover — up to $3,400 in 2026.
The catch is the deadline: most FSA money expires if unspent, though many plans let you carry a small amount into the next year.
How to Do It:
- Estimate a year of glasses, copays, and prescriptions first, then fund only what you'll truly spend.
5. Claim the Bigger Dependent Care Break
Families paying for daycare, after-school care, or care for a dependent adult can use a Dependent Care FSA.
Good news: a 2025 tax law raised the cap from $5,000 to $7,500 starting in 2026 — a much bigger pre-tax dent in those bills.
How to Check It:
- IRS Publication 503 — covers which care expenses qualify.
6. Harvest Your Losses
Investment losses hurt, but they're worth something: capital losses cancel out capital gains, dollar for dollar.
Beyond that, they can erase up to $3,000 of your regular income each year, and anything left over rolls forward to future years.
How to Do It:
- Before December 31, review losing positions you no longer believe in — selling them turns a paper loss into a tax discount.
7. Hold Winners Past One Year
Sell an investment you've held over a year and the profit gets the long-term capital gains rate — 0%, 15%, or 20% — instead of your regular income rate.
For a high earner, that can mean roughly half the tax. Patience literally pays!
How to Check It:
- IRS Topic 409 — the official page on capital gains rates and holding periods.
8. Double-Check Your 1099-B
Your broker's year-end 1099-B form lists your investment sales — and sometimes the "cost basis" column, the price you originally paid, is blank or wrong.
A missing cost basis can make your profit look bigger than it was, which means overpaying tax on money you never made.
How to Do It:
- Compare each sale against your own purchase records, and ask your broker to correct any blanks before you file.
- One-touch scanning sends receipts and statements straight to the cloud
- Touchscreen profiles let each family member file to their own folders
- The automatic feeder chews through tax-season paper piles fast
9. Deduct Your Margin Interest
If you borrow money from your broker to invest, the interest may be deductible against your investment income.
It only works if you itemize deductions, and the rules have real fine print — this one's worth a pro's eyes.
How to Check It:
- IRS Form 4952 — the form that calculates how much investment interest you can deduct.
10. Know the New Gambling Loss Rules
If you win at the casino, the IRS hears about it — big wins trigger a Form W2-G.
Losses can offset those winnings if you itemize, but heads up: starting with the 2026 tax year, a new law lets you deduct only 90% of your losses, still capped at your winnings.
That means even a break-even year at the tables can now leave you owing some tax.
How to Do It:
- Keep a log of every session — dates, places, wins, losses — plus tickets and statements; IRS Topic 419 has the details.
- 13 pockets hold over 2,000 sheets — one per month plus extras
- Expands to 12 inches yet stands on the desk without tipping
- Wipe-clean waterproof polypropylene with labels for quick lookup
11. Feed a Traditional IRA
A Traditional IRA is a do-it-yourself retirement account: contributions can be deductible now, and the money grows tax-deferred.
For 2026, the cap is $7,500, plus a $1,100 catch-up if you're 50 or older — though the deduction can shrink at higher incomes if you also have a workplace plan.
How to Check It:
- The IRS 2026 limits announcement — every retirement number in one official page.
12. Grow College Money Tax-Free in a 529
A 529 plan is an education piggy bank: the money grows tax-free, and withdrawals for qualified school costs are tax-free too.
Contributions aren't federally deductible, but many states hand you a state tax break for chipping in.
How to Check It:
- SavingForCollege.com — compares every state's plan and shows your state's deduction.
13. Fix Your W-4
Your W-4 tells your employer how much tax to hold back from each paycheck.
Get it wrong and you either lend the IRS free money all year — or get hit with an underpayment penalty in April.
How to Do It:
- Run the IRS Tax Withholding Estimator — ten minutes, and it tells you exactly what to put on a new W-4.
14. Rent Your Home Tax-Free for 14 Days
Here's a fun one: rent out your home for 14 days or fewer in a year, and that income is typically 100% tax-free.
Hosts near stadiums and festivals quietly pocket thousands under this "minimal rental use" rule — no reporting required.
How to Check It:
- IRS Topic 415 — the official page on renting out your home, including the 14-day rule.
- Cross-cuts 12 sheets per pass into P-4 security particles
- Runs 6 minutes straight with auto start/stop and anti-jam reverse
- The 5.5-gallon windowed bin means fewer trips to empty
Wrapping Up
Think of the tax code as a coupon book: the discounts are real, but only for people who clip them before the deadline.
Every move here has its own limits and fine print, so run your personal situation past a qualified tax professional — these are ideas, not personal instructions or individualized tax advice.
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