Important Tax Deductions You Shouldn’t Overlook

Paying more tax than necessary can happen simply because a taxpayer misses a deduction that was available under the law. Some expenses are easy to remember, while others are overlooked because they occur throughout the year, depend on specific rules, or require itemization.

Understanding available tax deductions is an important part of tax planning and can help individuals and families make better filing decisions and keep stronger records. However, not every expense qualifies, and some deductions apply only when you meet certain income, filing, or documentation requirements.

The goal is not to claim every possible write-off. The goal is to identify legitimate expenses relevant to your situation and ensure you have proper support.

Start by Comparing the Standard Deduction and Itemizing

Before reviewing individual expenses, understand how deductions generally work.

Most taxpayers choose between the standard deduction and itemizing eligible expenses on Schedule A. For tax year 2026, the standard deduction is $16,100 for single filers and married people filing separately, $32,200 for married couples filing jointly, and $24,150 for heads of household.

Itemizing may make sense when your itemized deductions exceed the standard deduction for your filing status. These expenses can include certain medical costs, mortgage interest, state and local taxes, and charitable gifts.

You can claim some adjustments to income even if you don't itemize. That distinction is important because certain income tax deductions may still be available even when a taxpayer uses the standard deduction.

1. State and Local Sales Taxes

State and local taxes can be easy to overlook, especially for people living in states without a personal state income tax.

Taxpayers who itemize generally may choose to deduct either state and local income taxes or state and local general sales taxes. In Florida, where there is no individual state income tax, the sales tax option can be particularly relevant.

For 2026, the federal limit for the combined deduction for eligible state and local income or sales taxes and property taxes is $40,400 for most filers, subject to income-based reductions. The limit is $20,200 for married taxpayers filing separately.

If you made a major purchase, such as a vehicle, boat, or home-related purchase, the sales tax paid may also affect the calculation under applicable rules.

Keep receipts for major purchases rather than relying on memory when filing.

2. Charitable Contributions

Charitable gifts remain one of the most familiar deductions, but the rules changed for 2026.

Beginning in tax year 2026, taxpayers who do not itemize may deduct up to $1,000 in qualifying cash contributions. Married couples filing jointly may qualify for up to $2,000. The donation generally must be made to an eligible organization and meet applicable recordkeeping requirements.

This matters because charitable giving is now a common tax break that may benefit some taxpayers even when they take the standard deduction.

Keep:

• Receipts or acknowledgment letters: Documentation should identify the organization and amount contributed.
• Bank or payment records: These may help establish when and how a qualifying contribution was made.
• Records for noncash donations: Property donations follow different rules from the new non-itemizer cash deduction.

Gifts made directly to individuals generally do not qualify as charitable deductions.

3. Medical and Dental Expenses

Large medical expenses may qualify for an itemized deduction, especially in a year involving surgery, long-term care, major dental work, or high unreimbursed medical costs.

In general, taxpayers who itemize can deduct qualifying unreimbursed medical and dental expenses only to the extent they exceed 7.5% of adjusted gross income.

Possible qualifying expenses may include certain doctor bills, prescriptions, dental care, health insurance premiums, long-term care costs, and medically necessary treatments.

The key is documentation. Keep invoices, insurance statements, pharmacy records, and proof of payment.

Do not assume every health-related purchase qualifies. Cosmetic procedures and general personal expenses are often treated differently.

4. Health Savings Account Contributions

Health Savings Accounts, or HSAs, can provide tax advantages for eligible individuals covered by qualifying high-deductible health plans.

For 2026, the annual HSA contribution limit is $4,400 for self-only coverage and $8,750 for family coverage. Eligibility rules still apply.

Eligible contributions can reduce taxable income, while qualifying withdrawals used for medical expenses can receive favorable tax treatment.

An HSA is different from a regular savings account. Contribution limits, coverage requirements, and distribution rules matter. Keep records showing both contributions and qualifying medical withdrawals.

For eligible taxpayers, HSA contributions are among the income tax deductions worth reviewing before filing.

5. Student Loan Interest

Interest paid on a qualifying student loan may create a deduction even if you do not itemize.

Under current rules, eligible taxpayers may deduct the lesser of $2,500 or the amount of qualified student loan interest actually paid during the year. Income limits and filing-status restrictions apply.

This deduction may apply to qualifying loans used for higher education expenses for the taxpayer, spouse, or qualifying dependent, provided the legal requirements are met.

Review Form 1098-E and your loan records before filing. Some qualifying interest may not always appear exactly as expected on the form, especially in situations involving certain origination fees or capitalized interest.

6. Educator Expenses

Teachers and other eligible educators often pay out of pocket for classroom materials.

For tax year 2026, an eligible educator may deduct up to $350 of qualifying unreimbursed expenses for items such as books, supplies, computer equipment, software, and certain classroom materials.

This deduction may be available without itemizing.

Good records matter because small purchases throughout the school year are easy to forget. Keeping receipts in a single folder or digital file can make calculating the deduction easier when tax season arrives.

7. Mortgage Interest and Certain Points

Homeowners who itemize may deduct qualifying mortgage interest, subject to applicable debt and property rules.

Mortgage points can also be overlooked. Points paid when purchasing a main home may qualify for different treatment than points paid when refinancing.

With a refinance, you often amortize qualifying points over the life of the loan instead of paying them upfront. If you later pay off the loan, the IRS may treat the remaining eligible points differently depending on the circumstances.

Keep the closing disclosure, refinancing documents, and Form 1098. These records may help determine whether part of the expense qualifies.

8. Business and Self-Employment Expenses

Self-employed taxpayers often have more deductible expense categories than employees, but business expenses must be directly related to earning income.

Depending on the business, qualifying expenses may include:

• Professional services and software: Accounting tools, legal services, scheduling systems, and business software may qualify when used for business purposes.
• Advertising and marketing: Website costs, online advertising, printing, and promotional services may be ordinary business expenses.
• Business use of a vehicle or home: Special rules apply, and strong records are important when personal and business use overlap.

Don't treat personal spending as a business expense just because you paid for it from a business account.

A mileage log, invoices, receipts, and a separate business bank account can make recordkeeping much easier.

9. Retirement Contributions

Contributions to certain retirement plans may reduce taxable income depending on the account type, income level, workplace coverage, and other factors.

Traditional IRA contributions, self-employed retirement plans, and employer-sponsored plans can have different rules.

Timing matters here. Some contribution deadlines occur after the end of the calendar year, while others require action earlier.

Retirement contributions should serve a long-term financial goal first. A tax benefit can help, but it shouldn't be the only reason for choosing an account or contribution strategy.

10. Newer Deductions Worth Reviewing for 2026

Recent federal law added several deductions that may apply to certain taxpayers, including provisions involving qualified tips, qualified overtime compensation, and eligible vehicle loan interest. Eligibility, income limits, documentation requirements, and effective dates vary.

These are examples of common tax breaks that taxpayers may miss simply because they are newer.

Do not assume that all tips, overtime pay, or auto loan interest automatically qualify. Review the exact statutory requirements and available IRS guidance before claiming a deduction.

Why Professional Tax Review Can Matter

Tax rules change frequently, and deductions often depend on filing status, income, documentation, and the nature of an expense.

A deduction that applied in a prior year may change, disappear, or become subject to a new limit. The opposite can also happen, as several federal changes took effect for 2026.

A professional review can be especially helpful if you have business income, multiple properties, large charitable gifts, significant medical expenses, investment activity, or major financial changes.

Conclusion

Overlooking deductions can unnecessarily increase taxable income, but claiming deductions without meeting the rules can create its own problems. A better approach is to review expenses carefully, determine whether you need to itemize, and keep records to support every amount claimed.

Doane & Doane, P.A. assists individuals, families, and business owners with tax planning and complex tax matters. Our team can help review how current federal tax rules may affect your broader financial and legal strategy.

Contact us to schedule a consultation and discuss your tax planning needs.

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