You can claim certain qualifying expenses and life events on your tax return to reduce your taxable income or lower your tax bill. These include medical costs, mortgage interest, charitable donations, and education-related expenses, depending on your filing status and country-specific rules.
Claiming eligible items reduces your tax liability. Deductions lower your adjusted gross income, while credits directly reduce the amount of tax owed. Not all expenses qualify-some require documentation, and others are limited by income thresholds or phase-out rules.
The IRS and HMRC define allowable claims based on federal and local regulations. For example, in the U.S., the standard deduction for single filers in 2023 was $13,850, but itemizing may yield greater benefits if your qualified expenses exceed that amount. Always verify eligibility using official guidelines.
Tax claims fall into two categories: deductions and credits. Deductions reduce your taxable income. Credits reduce your actual tax bill dollar-for-dollar.
For example, if you earn $60,000 and claim $10,000 in deductions, your taxable income drops to $50,000. A $1,000 credit then cuts your tax due by exactly $1,000. Credits are more valuable per dollar claimed.
Some claims are non-refundable-meaning they can't push your refund above zero. Others are refundable, allowing you to receive more than you paid in taxes. The American Opportunity Tax Credit is refundable up to $1,000, which can result in a cash payment even if you owe no tax.
Medical and dental expenses exceeding 7.5% of adjusted gross income are deductible in the U.S. If your AGI is $50,000, only amounts over $3,750 count. This includes prescription drugs, vision care, and mental health services.
Mortgage interest on a primary residence is deductible up to $750,000 in loan value. For married couples filing jointly, this limit applies per household. Property taxes paid annually are also deductible, subject to a $10,000 cap under the SALT (State and Local Tax) deduction.
Charitable contributions to 501(c)(3) organizations are deductible up to 60% of AGI. Cash gifts require receipts; non-cash donations need appraisals for items valued over $500. The IRS requires donors to retain records for three years.
| Type | Eligibility Criteria | Maximum Claimable | Documentation Required |
|---|---|---|---|
| Deduction: Mortgage Interest | Primary home, loan under $750k | Based on interest paid | Form 1098, bank statements |
| Credit: Earned Income Tax Credit (EITC) | Low-to-moderate income, earned wages | $7,430 (2023) | Form 1040, W-2, proof of dependent |
| Deduction: Charitable Contributions | Donations to qualified nonprofits | 60% of AGI (cash); 30% (non-cash) | Receipts, acknowledgment letters |
| Credit: Child Tax Credit | Dependent under 17, income below threshold | $2,000 per child (up to $1,600 refundable) | Form 1040, birth certificates, custody agreements |
Not all taxpayers benefit equally. High-income earners may lose eligibility for certain credits due to phase-out rules. For example, the EITC phases out between $16,480 and $57,414 for single filers in 2023.
A lesser-known rule: you cannot claim a deduction for commuting expenses unless you're self-employed and traveling for business. Regular trips from home to work are not deductible-even if you drive a hybrid or pay for parking.
Many people assume they can deduct home office expenses without proper justification. The IRS requires the space to be used exclusively and regularly for business. A corner of a bedroom used for video calls doesn't qualify unless it's a dedicated workspace.
Another error is claiming unreimbursed employee expenses. While these were deductible under prior law, the Tax Cuts and Jobs Act eliminated this deduction through 2025. Employees who pay for uniforms, tools, or travel for work cannot claim those costs unless they're reimbursed.
Self-employed individuals often overlook the home office deduction. If you use 15% of your home for business, you can allocate 15% of utilities, rent, and insurance. But the calculation must reflect actual square footage and usage logs.
I once filed my 2022 return with a home office claim based on a shared living room. After a review, the IRS rejected it because the space wasn't exclusively used for work. I had to refile with a smaller, defined area. Documentation matters.
Most deductions and credits are reported on Form 1040 in the U.S. Itemized deductions go on Schedule A. Credits appear on Form 1040 directly, often with additional forms like Form 8863 for education credits.
For property tax, you report the amount paid during the calendar year on Schedule A. If you paid $4,500 in property taxes in 2023, enter that figure. The deduction is capped at $10,000 nationwide, regardless of state.
If you're unsure whether an expense qualifies, consult the IRS Publication 502 (Medical and Dental Expenses) or Publication 525 (Taxable and Nontaxable Income). These guides clarify limits and exclusions.
Always keep copies of receipts, canceled checks, and confirmation emails. The IRS recommends retaining tax records for at least three years, though some experts suggest seven for high-value claims.
Only qualifying expenses reduce your tax burden. Medical, mortgage, charitable, and education costs are valid under specific conditions. Credits offer greater savings than deductions.
When in doubt, consult a certified tax professional. The IRS estimates that 40% of errors come from misapplying rules rather than intentional fraud. Understanding what you can claim on tax prevents costly mistakes.