Running your own business is rewarding — but the tax bill can sting if you are not claiming everything you are legally entitled to deduct. The IRS allows self-employed individuals and 1099 workers to write off a wide range of legitimate business expenses, and several new provisions from 2025 legislation make now one of the best years in recent memory to be self-employed from a tax-planning standpoint.
Below are 15 deductions that many self-employed workers overlook, along with the key numbers for 2025 and 2026. Read through this list before you file — or, better yet, use it as a conversation starter with a tax professional who specializes in self-employment.
Why Deductions Matter More When You Are Self-Employed
When you work for yourself, every dollar of deductible expense reduces three things at once: your federal income tax, your state income tax, and your self-employment (SE) tax — which is 15.3% on net earnings (12.4% Social Security + 2.9% Medicare). That triple benefit means a $1,000 deduction could save you $300–$500 or more depending on your tax bracket and state. Knowing your deductions is not just good hygiene — it is serious money.
The 15 Deductions
1. Self-Employed Health Insurance Premiums (100% Deductible)
If you pay for your own health, dental, or vision insurance — and you are not eligible for coverage through a spouse's employer plan — you can deduct 100% of your premiums directly on your Form 1040. This deduction is taken above the line (meaning it reduces your adjusted gross income), which also helps with other income-based phase-outs. This applies to premiums paid for yourself, your spouse, and your dependents.
2. Home Office Deduction
If you use part of your home regularly and exclusively for business, you can deduct that space. Two methods are available:
| Method | How It Works | Best For |
|---|---|---|
| Simplified | $5 per square foot, up to 300 sq ft (max $1,500/year) | Easy to calculate; no depreciation recapture |
| Actual Expense | Deduct the business-use percentage of rent/mortgage interest, utilities, insurance, and repairs | Larger home offices or high housing costs |
In high-cost New York City or the metro area, the actual expense method often produces a much larger deduction — worth calculating both ways.
3. Vehicle / Mileage
Every mile you drive for business — client visits, supply runs, networking events, trips to the post office — counts. The IRS standard mileage rates are:
- 2025: 70 cents per mile
- 2026: 72.5 cents per mile (IRS IR-2025-128)
Alternatively, you can deduct actual vehicle expenses (gas, insurance, repairs, depreciation) multiplied by your business-use percentage. Keep a mileage log — the IRS requires documentation, and this deduction is frequently audited.
4. Section 199A — 20% Qualified Business Income (QBI) Deduction
This is one of the most powerful deductions available to self-employed individuals. Under Section 199A, eligible sole proprietors, LLC owners, and partners can deduct up to 20% of their qualified business income (QBI) from their taxable income.
The deduction was made permanent by the One Big Beautiful Bill Act signed on July 4, 2025 — previously it was set to expire after 2025. For 2025, the full 20% deduction is available to:
- Single filers with taxable income under $197,300
- Joint filers with taxable income under $394,600
Some service businesses (law, consulting, financial services, etc.) face phase-outs above these thresholds. Most trades and product-based businesses qualify without restriction. Starting in 2026, a minimum $400 deduction is guaranteed for qualifying taxpayers who materially participate in their business and have at least $1,000 in QBI.
5. Retirement Contributions: SEP-IRA
A SEP-IRA lets self-employed individuals contribute up to 25% of net self-employment income to a tax-deferred retirement account. For 2025, the contribution limit is $70,000 (Fidelity/IRS). For 2026, the limit rises to $72,000. Contributions are deductible above the line and reduce your SE tax base.
SEP-IRAs are easy to open and can be established and funded up to your tax filing deadline (including extensions), giving you maximum flexibility.
6. Retirement Contributions: Solo 401(k)
A Solo 401(k) allows even larger potential contributions because you contribute as both employee and employer. For 2025 (IRA Financial):
| Contribution Type | 2025 Limit | 2026 Limit |
|---|---|---|
| Employee elective deferral (under 50) | $23,500 | $24,500 |
| Catch-up (age 50–59 or 64+) | $7,500 | $8,000 |
| Catch-up (age 60–63) | $11,250 | $11,250 |
| Total (employee + employer, under 50) | $70,000 | $72,000 |
Like the SEP-IRA, Solo 401(k) contributions reduce your adjusted gross income and your taxable profit.
7. Half of Self-Employment Tax
This one is automatic but easy to forget. The IRS lets you deduct 50% of your SE tax on your Form 1040. This is intended to mirror the employer deduction that traditional employers receive for their half of FICA taxes. It does not appear on Schedule C — it is an above-the-line deduction on Schedule 1 — but it meaningfully reduces your adjusted gross income.
8. No Tax on Tips (2025–2028, Up to $25,000)
The One Big Beautiful Bill Act created a new federal income tax deduction for tipped workers in eligible occupations. If you are self-employed and receive voluntary tips from customers — food delivery, personal services, home services, tutoring, salon work, and more than 70 other qualifying occupations — you can deduct up to $25,000 per year in qualified tips from your federal taxable income.
Key details (Fidelity, Ogletree):
- Available for tax years 2025–2028
- Phase-out begins at $150,000 MAGI (single) / $300,000 MAGI (joint)
- Married filers must file jointly to claim the deduction
- Only voluntary tips qualify — automatic service charges do not
- The deduction reduces federal income tax, but SE tax and state/local taxes still apply to tip income
For a self-employed delivery driver or salon owner who earns $20,000 in tips, this alone could save $2,000–$4,000+ in federal income tax.
9. Phone, Internet & Software
The business-use portion of your cell phone, home internet service, and any software subscriptions (accounting software, project management tools, design apps, cloud storage) is fully deductible. If your phone is 70% business, 70% of your monthly bill is a write-off. Keep a brief log or note in your records of your typical usage split.
10. Professional Development & Education
Courses, certifications, books, webinars, and professional memberships that maintain or improve your current skills qualify as deductible. Note: education costs that qualify you for a new career generally do not qualify, but continuing education in your existing field does.
11. Business Meals
You can deduct 50% of the cost of meals where business is genuinely discussed — with clients, partners, or prospects. The meal must have a legitimate business purpose. Keep the receipt and note who you met with and the business topic discussed.
12. Advertising & Marketing
Every dollar you spend promoting your business — social media ads, Google Ads, business cards, a website, flyers, or a listing on a professional directory — is 100% deductible as an ordinary and necessary business expense.
13. Contract Labor
If you paid a subcontractor, virtual assistant, freelancer, or other independent contractor $600 or more in a year, you are required to file a Form 1099-NEC for them — but their payments are fully deductible as a business expense. This is a significant deduction for any self-employed person who outsources work.
14. Business Insurance, Bank Fees & Payment Processing
- Business insurance premiums (general liability, professional liability/E&O, commercial auto): fully deductible
- Bank fees for a business checking account: deductible
- Payment processing fees (Stripe, Square, PayPal, credit card transaction fees): deductible
These small line items add up over a year, especially for high-volume businesses that process many transactions.
15. Startup Costs
If you launched your business in 2025 or 2026, the IRS allows you to deduct up to $5,000 in startup costs in your first year, and up to $5,000 in organizational costs. Remaining startup costs are amortized over 15 years. Qualifying costs include market research, advertising before launch, professional fees, and training.
Quick Reference: 15 Deductions at a Glance
| # | Deduction | Limit / Rate |
|---|---|---|
| 1 | Self-employed health insurance | 100% of premiums |
| 2 | Home office (simplified) | $5/sq ft, max $1,500/yr |
| 3 | Mileage (2025 / 2026) | 70¢ / 72.5¢ per mile |
| 4 | QBI deduction (Sec. 199A) | Up to 20% of QBI (permanent) |
| 5 | SEP-IRA contributions | Up to $70,000 (2025) |
| 6 | Solo 401(k) contributions | Up to $70,000 (2025) |
| 7 | Half of SE tax | 50% of SE tax paid |
| 8 | No tax on tips | Up to $25,000 (2025–2028) |
| 9 | Phone, internet, software | Business-use % |
| 10 | Professional development | 100% if maintaining current skills |
| 11 | Business meals | 50% of cost |
| 12 | Advertising & marketing | 100% |
| 13 | Contract labor payments | 100% (file 1099-NEC if ≥$600) |
| 14 | Insurance, bank & processing fees | 100% |
| 15 | Startup costs | Up to $5,000 in first year |
Avoid These Common Mistakes
Not keeping records. The IRS can disallow any deduction you cannot document. Use an accounting app like QuickBooks Self-Employed or Wave, and link it to a dedicated business bank account.
Mixing personal and business expenses. Open a separate checking account and credit card for your business. This makes bookkeeping dramatically simpler — and makes audits far less painful.
Forgetting quarterly estimated taxes. Deductions reduce what you owe, but you still need to pay throughout the year. The IRS charges penalties for underpayments. Federal estimates are due April 15, June 15, September 15, and January 15 of the following year.
Frequently Asked Questions
Q: Can I claim the QBI deduction and also take deductions for business expenses?
Yes. Business expenses reduce your net profit (QBI), and then you apply the 20% QBI deduction to whatever is left. Both work together to reduce your taxable income.
Q: I work from home but I also sometimes work from coffee shops. Can I still claim a home office?
Only if you have a dedicated space used regularly and exclusively for business. A kitchen table where you occasionally work does not qualify. A dedicated spare bedroom or a partitioned area used only for business does.
Q: Should I use a SEP-IRA or a Solo 401(k)?
Both offer similar maximum contributions for many earners. Solo 401(k)s allow larger contributions at lower income levels (because the employee deferral is not capped at a percentage of earnings) and offer Roth contribution options. SEP-IRAs are simpler to administer. A tax advisor can run the numbers for your specific income.
Ready to Stop Leaving Money on the Table?
Most self-employed people overpay their taxes simply because they do not have a system for tracking deductions or a professional who understands the self-employment tax code. The 15 deductions above — applied correctly — can make a dramatic difference in what you actually owe.
At Dynamic Tax & Accounting Services, our IRS Enrolled Agents work with freelancers, contractors, consultants, gig workers, and small business owners throughout New York and New Jersey. We know the deductions, the deadlines, and the strategies that make a real difference for 1099 workers.
Plans start at just $99/month. We serve clients in the Bronx, Queens/Jamaica, Buffalo NY, and Totowa NJ — and virtually in all 50 states. Whether you want full bookkeeping support or just a thorough annual tax prep, we will treat your business like family.
Book a free tax planning consultation at dynamicsrv.com — and let's find the deductions you have been missing.
Ready to talk to Dynamic Tax? See our flat monthly pricing plans starting at $99/month, or book a free consultation. Offices in the Bronx, Jamaica/Queens, Buffalo, and Totowa, NJ — plus virtual service in all 50 states. Call (646) 295-3811 or download the Dynamic Tax App to get started today.
