As a sole proprietor, you can write off (deduct) business expenses that are both "ordinary and necessary" to your business to reduce your taxable income. These deductions are generally claimed on Schedule C of your Form 1040.
As a sole proprietor, you may be able to write off health insurance premiums, business expenses like equipment and travel, and even part of your self-employment taxes. Discover essential tips for sole proprietors and ensure you're taking full advantage of available deductions to maximize your tax savings.
Many business expenses are 100% deductible, including advertising, employee wages, rent, supplies, and certain business meals like company parties or meals for the public, while personal deductions like student loan interest or charitable donations (depending on the type) can also be fully deductible for individuals. The key is that the expense must be "ordinary and necessary" for your trade or business or meet specific IRS criteria, often differentiating from the 50% rule for client meals.
Expenses that you can claim as a Sole Trader
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.
The section 179 deduction allows taxpayers, other than trusts and estates, to elect to expense a specified amount of the cost of qualifying property purchased for use in a business. For tax years beginning in 2026 the maximum deduction is $2,560,000, (2025, the maximum deduction is $2,500,000).
Most self-employed people rely on the same phone and broadband for both work and personal use. You can usually claim back part of the cost as a business expense, but only the share that relates to your work.
Errors in Social Security numbers, names, or addresses are surprisingly common. Double-check all personal information on your forms and make sure it matches official records. Failing to include all W-2s, 1099s, or receipts for deductions can trigger audits or processing delays.
The $20,000 limit under the measures applies on a per asset basis, so small businesses can instantly write off multiple assets. Assets valued at $20,000 or more can continue to be placed into the small business pool and depreciated at 15% in the first income year and 30% each income year after that.
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.
A recent tax law ("One Big Beautiful Bill") introduced a new $6,000 bonus deduction for Americans aged 65 and older, available for tax years 2025-2028, reducing taxable income, not the tax itself, with income phase-outs starting at $75,000 MAGI for singles and $150,000 for joint filers. This deduction adds to existing standard deductions, provides up to $12,000 for couples, and requires a Social Security number and filing status other than Married Filing Separately.
Here are a few mistakes small business owners should avoid:
If you qualify, you can deduct the cost of:
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.
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Yes — according to Section 179 of the IRS tax code, small businesses can write off the full purchase price of new and used machines for the year they purchased them. This allows business owners to save a significant amount of money in taxes and reinvest that money back into their businesses instead.
If the vehicle weighs more than 6,000 pounds and is used more than 50% for business, you can write off up to $28,900 in the first year, and potentially even more with bonus depreciation. Let's break it down: Buy a qualifying vehicle for $60,000, and you could write off a large portion of that cost in year one.
Limited circumstances for stand-alone 179 benefits.
The Section 179 expense limit and phase-out threshold ($2,560,000 and $4,090,000, respectively, for 2026) are now permanent parts of the tax code that are adjusted annually for inflation.