Common tax-deductible expenses include mortgage interest, charitable donations, state/local taxes (SALT), and medical costs exceeding 7.5% of AGI. For the self-employed, deductions cover home office costs, business travel/mileage, supplies, and advertising. Others include student loan interest and retirement contributions.
You can deduct these expenses whether you take the standard deduction or itemize:
Here are 8 tax deductions you may be able to claim at tax time:
That decision heavily influences which deductions are available to you.
The biggest tax mistakes people make include filing late, math errors, incorrect personal info (like Social Security numbers), forgetting deductions/credits (like EITC), misreporting income, not signing forms, and making errors with bank details for direct deposit, all leading to delays, penalties, or missed savings, with using tax software or professionals helping avoid these common pitfalls.
Here are some examples of records that can be used to claim deductions instead of using receipts:
A portion of your utility bills (gas, electric, water) A portion of your rent payments or mortgage interest. Any excess internet and mobile phone usage. Part of your council tax bill.
Allowable expenses include your basic office costs such as stationery and the bills you pay on your business phone. Travel costs and staff salaries are also included, as is the cost of a uniform or other appropriate clothing (for example, if you work in a skilled or manual trade).
Miscellaneous itemized deductions are those deductions that would have been subject to the 2%-of-adjusted-gross-income (AGI) limitation. You can still claim certain expenses as itemized deductions on Schedule A (Form 1040), Schedule A (1040-NR), or as an adjustment to income on Form 1040 or 1040-SR.
The IRS allows taxpayers to deduct up to $3,000 of realized investment losses ($1,500 if married filing separately) against ordinary income each year. This deduction applies only to losses in taxable investment accounts and must be realized by December 31st to count for that tax year.
100% write-offs, primarily through bonus depreciation, allow businesses to immediately deduct the full cost of qualifying new and used assets (like equipment, machinery, vehicles, and certain improvements) in the year they're placed in service, rather than depreciating them over years, significantly boosting cash flow and lowering taxes, with recent laws making this 100% deduction permanent for assets acquired after January 19, 2025. This is a major tax incentive under recent legislation, often used alongside Section 179 expensing, which offers its own high deduction limits, notes Forbes.
20 Common Tax Deductions: Examples for Your Next Tax Return
The "$1000 instant tax deduction" refers to a proposed Australian tax policy, specifically from the Albanese Labor government in 2025, allowing eligible workers to claim a flat $1,000 deduction for work-related expenses without needing receipts, simplifying tax returns for those with lower expenses but potentially costing those with higher expenses, starting from 1 July 2026. It's an option to replace itemised work-related deductions, not an extra refund, and doesn't affect non-work-related deductions like charity.
Some of the most common federal tax deductions include:
Common tax return mistakes that can cost taxpayers
$300 maximum claims rule
This rule states that if the total of your work-related expenses is $300 or less (not including car, travel, and overtime meal expenses, which can be claimed separately), you can claim the total amount as a tax deduction without receipts.
Loan schemes. Perhaps the most popular example of tax avoidance is operated by companies where directors receive their income as directors' loans and then either do not repay such loans to the company or write them off at the year-end.
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