Are You Overpaying Taxes? Common Deductions, Adjustments, and Credits People Miss
- The Mathieson Team
- 5 days ago
- 4 min read

A lot of W-2 taxpayers assume the real tax breaks are only for business owners. Not true.
Even if you don’t own a business, the tax code includes a long list of deductions, adjustments, and credits that can reduce what you owe. The catch is that many of these benefits depend on what you paid during the year—and whether you have the right documentation to support it.
Below is a high-level guide to the most common items that can help individuals and families reduce their tax bill.
First, a quick roadmap: deduction vs. adjustment vs. credit
These terms get used interchangeably, but they do different things:
Deductions generally reduce taxable income (often tied to itemizing).
Adjustments (sometimes called “above-the-line” deductions) reduce income too, and many are available even if you don’t itemize.
Credits reduce your tax bill directly (often the most valuable category).
Practical takeaway: Credits usually have the biggest impact, but adjustments and deductions can still create meaningful savings.
Quick note: Standard deduction vs. itemizing
When you file an individual return, you generally choose one:
Standard deduction: a flat amount allowed by the IRS—simple and common.
Itemized deductions: you list eligible expenses (like mortgage interest, state/local taxes, charitable gifts, and certain medical costs).
Rule of thumb: Itemizing usually only helps when your itemized total is higher than your standard deduction. If you’re close, it’s worth running both ways—because the best option is purely a numbers decision.
1) Deductions (most often relevant when you itemize)
For many taxpayers, the standard deduction is larger than their itemized deductions—so itemizing only helps when certain costs stack up enough during the year.
Common itemized deductions people overlook
State and local taxes (SALT)This often includes state income taxes and property taxes (subject to limits).
Mortgage interest Especially relevant in the earlier years of a mortgage, or in certain refinance scenarios.
Charitable contributions Cash donations are common, but non-cash donations can matter too—if they’re properly documented.
Medical expenses Frequently missed because they’re spread out over the year: copays, prescriptions, dental/vision, and other eligible out-of-pocket costs. Medical expenses generally only help once they clear certain thresholds, but when they do, the impact can be significant.
Practical takeaway: Itemizing isn’t about preference—it’s about whether the math works in your favor.
2) Adjustments (often the best “quiet” savings—even if you don’t itemize)
Adjustments are a big deal for W-2 taxpayers because they can reduce income without needing to itemize deductions.
Common adjustments that may apply
Traditional IRA contributions Depending on income and whether you (or your spouse) are covered by a workplace retirement plan, contributions may be deductible.
Student loan interest A common adjustment, subject to income limits.
Educator expenses For qualifying educators and classroom-related purchases.
HSA contributions If you’re eligible for an HSA (generally tied to having a qualifying high-deductible health plan), this can be one of the most tax-advantaged tools available.
Other “pre-tax” opportunities through work Not always labeled as an “adjustment,” but increasing pre-tax payroll deferrals (retirement, certain benefit elections) can reduce taxable income and sometimes prevent surprise balances due at filing time.
Practical takeaway: For many non-business owners, adjustments are where “tax planning” actually shows up.
3) Credits (often the biggest, most direct savings)
Credits are powerful because they reduce what you owe dollar-for-dollar.
Common credits for individuals and families
Education credits Often available for qualifying higher education expenses for eligible students.
Child and dependent care credit For qualifying care expenses that allow you (and a spouse, if applicable) to work or look for work.
Child-related credits (where applicable)These can be meaningful, but eligibility depends on factors like income and dependent requirements.
Saver’s Credit (retirement savings credit)Frequently overlooked, but for eligible income ranges it can add a real benefit for contributing to retirement accounts.
Practical takeaway: If you pay for childcare or education, don’t assume it “won’t matter.” Credits can materially change the final result.
4) The IRS doesn’t automatically know most of this—your return completes the picture
Many of the most valuable tax breaks for individuals depend on your personal spending and your personal facts—medical costs, charitable giving, education expenses, childcare, retirement contributions.
That’s why two people with similar W-2 income can end up with very different tax outcomes.
Practical takeaway: Your return doesn’t just report income—it’s how you claim what you’re entitled to claim.
5) A simple way to avoid missing items: a year-end checklist mindset
If you want one practical habit, it’s this: once a year, run a short checklist and gather documentation in one place. For example:
Did we pay meaningful out-of-pocket medical/dental/vision costs?
Did we donate cash or goods to charity (and keep receipts/acknowledgments)?
Did we pay mortgage interest or property taxes?
Did we pay tuition or have student loan interest?
Did we pay for daycare or dependent care?
Did we contribute to an IRA or HSA?
Practical takeaway: Many “missed” tax benefits are missed because they weren’t tracked—not because they weren’t allowed.
Final Thoughts
If any of these sound like they may apply to you, you’re not alone—many taxpayers miss opportunities simply because they don’t know what to look for. If you’d like help identifying deductions, adjustments, and credits you may qualify for—or want proactive planning before year-end—reach out to our team. We’d be happy to help.
Disclaimer
This article is for general informational purposes only and does not constitute tax, legal, or accounting advice. Tax benefits and eligibility requirements vary based on your specific facts, income levels, and filing status, and the rules can change. Before taking any action, consult with a qualified tax professional regarding your individual situation.


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