Unlock Your Savings: 50 Tax-Smart Tips for Small Business Owners
Tax year 2026 edition · Updated October 11, 2026 · General information, not tax advice
If you work for yourself, the tax code rewards the people who plan ahead. No one hands you a withholding statement or a benefits package, so it's on you to find every deduction, credit and timing choice available. The good news: the rules got friendlier in 2025. The One Big Beautiful Bill Act (Public Law 119-21) made 100% bonus depreciation permanent, roughly doubled the Section 179 limit, made the 20% qualified business income deduction permanent, and raised the 1099 reporting threshold.
Below are 50 practical moves, grouped by theme, each one backed by the IRS publication, form or notice behind it. Dollar figures were checked against IRS announcements and instructions as of October 11, 2026, and apply to tax year 2026 unless noted otherwise. A few tips carry a dagger (†) because they rest on long-standing IRS rules we didn't re-pull for this update, so check the cited publication before you rely on them.
Two ideas to keep in mind
Not every deduction does the same job. Ordinary business expenses on Schedule C cut both your income tax and your self-employment tax. Deductions that sit below that line, retirement contributions, the self-employed health insurance deduction, HSA contributions, only reduce income tax. Both kinds are worth claiming, but don't treat them as interchangeable.
A deduction is not a refund. Spending a dollar to save somewhere between 10 and 37 cents of federal income tax is still a losing trade unless you needed the item anyway. Use these tips to capture spending you were already planning to do, and to time purchases you'd already decided on.
Part 1: Vehicles and travel
1. Use the right mileage rate for each half of 2026
The IRS set the 2026 business rate at 72.5 cents per mile, then raised it to 76 cents for travel on or after July 1 because of fuel prices. That makes 2026 a two-rate year: 5,000 miles in each half works out to $3,625 plus $3,800, or $7,425. A dated mileage log is the safest way to prove which rate applies to each trip. (IRS Notice 2026-10; Announcement 2026-11)
2. Choose your vehicle method in year one
If you own the vehicle and want the option to use the standard mileage rate later, you must choose it in the first year the vehicle is available for business use. After that you can switch between the standard rate and actual expenses. For a leased vehicle, the standard rate must be used for the whole lease, renewals included. (Notice 2026-10)
3. Compare actual expenses before you default to mileage
The actual-expense method deducts gas, insurance, repairs, registration and depreciation, multiplied by your business-use percentage. It can beat the standard rate for expensive vehicles driven fewer miles. Remember that part of the standard rate (35 cents per mile in 2026) is treated as depreciation and reduces your basis in the vehicle. (Notice 2026-10; Pub. 463)
4. Know the cap on heavy SUVs and trucks
For 2026, the Section 179 deduction for an SUV is capped at $32,000. Bonus depreciation may cover more of the cost, but vehicles are generally limited to the share of business use, and accelerated write-offs generally require business use above 50%.† (Rev. Proc. 2025-32; Pub. 946)
5. Deduct business travel properly
Airfare, lodging, rental cars, baggage fees and similar costs are deductible when you travel away from your tax home overnight for business, and travel meals are 50% deductible. Keep receipts with the date, destination and business purpose.† (Pub. 463)
Part 2: Equipment and expensing
6. Use Section 179 for equipment you will actually use
For 2026 you can expense up to $2,560,000 of qualifying property, with the limit phasing out dollar for dollar once you place more than $4,090,000 of property in service. Laptops, machinery, furniture and certain software can all qualify. You elect it on Form 4562. (Rev. Proc. 2025-32; IRC §179)
7. Respect Section 179's limits
The deduction can't exceed your taxable income from the active business, so it works best when you're profitable. The asset must also be placed in service, not merely bought, by December 31, and only the business-use share counts.† (IRC §179(b); Pub. 946)
8. Take advantage of permanent 100% bonus depreciation
The 2025 law restored 100% bonus depreciation permanently for qualified property acquired after January 19, 2025. Unlike Section 179, bonus depreciation isn't limited by business income, so it can create a loss you carry forward. Many owners apply Section 179 first and use bonus depreciation for the rest. (IRC §168(k), as amended by P.L. 119-21)
9. Elect the de minimis safe harbor
Small business without audited financial statements can deduct items costing $2,500 or less per item or invoice instead of capitalizing them. The limit is $5,000 for businesses with applicable financial statements. You make the election each year by attaching a statement to a timely filed return. (Notice 2015-82; Treas. Reg. §1.263(a)-1(f))
10. Don't overlook software and building improvements
Section 179 can also cover certain software and elected improvements to nonresidential buildings, such as roofs, HVAC systems, fire protection and security systems. If you own or lease commercial space, ask whether an upgrade qualifies. (IRC §179(e); Pub. 946)
11. Separate repairs from improvements
Routine maintenance and repairs are generally deductible right away, while betterments and restorations must be capitalized. A small-taxpayer safe harbor lets eligible businesses deduct repairs and maintenance on buildings within dollar limits tied to the building's basis.† (Treas. Reg. §1.263(a)-3)
Part 3: Home and office
12. Use the simplified home office method
The simplified method gives you $5 per square foot of home office, up to 300 square feet, for a maximum of $1,500. The space must be used regularly and exclusively for business, and you can choose either method each year. Employees can't claim a home office deduction, but self-employed people can. (IRS Simplified Option for Home Office Deduction; Pub. 587)
13. Run the numbers on the regular method
The regular method deducts the business percentage of rent or mortgage interest, utilities, insurance and repairs, plus depreciation if you own. It requires Form 8829 and more records, but it can be larger than $1,500, and renters qualify as well as owners. The deduction can't exceed the income from the business use of the home.† (Pub. 587)
14. Deduct the business share of phone and internet
If your cell phone and internet service do double duty, deduct the business-use percentage. Reasonable records, such as a representative sample of usage, support the percentage you claim.† (Pub. 535)
15. Consider the Augusta rule, with care
If you rent your home for 14 days or fewer in a year, the rental income isn't reportable and the related expenses aren't deductible. Some owners have their business rent the home for genuine meetings at fair-market rent, so the business deducts the rent while the owner excludes it under §280A(g). The arrangement draws scrutiny, so document the business purpose, the dates and how you set the rate. (IRC §280A(g); Pub. 527)
16. Set up an accountable plan if you own a corporation
Sole proprietors deduct business expenses directly on Schedule C. If you own an S or C corporation, reimburse yourself for home office, mileage and similar costs through a written accountable plan, with receipts, so the reimbursements aren't treated as wages.† (Pub. 463; Pub. 535)
Part 4: Retirement and health
17. Open a solo 401(k)
For 2026 the employee deferral limit is $24,500. Add $8,000 if you're 50 or older, or $11,250 if you turn 60 through 63 this year. Total contributions, not counting catch-ups, can reach $72,000. Elect your deferral by year-end; the employer profit-sharing portion can generally be made up to your return due date, including extensions. (Notice 2025-67; Pub. 560)
18. Consider a SEP IRA
A SEP lets you contribute up to 25% of compensation, which works out to about 20% of net profit for a sole proprietor, capped at $72,000 for 2026. You can set it up and fund it as late as your return due date, including extensions. If you extended your 2025 return, October 15 is the last day to fund a 2025 SEP. (Notice 2025-67; Pub. 560)
19. Know the SIMPLE IRA deadline
The 2026 SIMPLE limit is $17,000, plus a $4,000 catch-up if you're 50 or older. A new SIMPLE plan generally must be established by October 1 of the year it applies to, so it's too late to start one for 2026. Put it on next year's calendar. (Notice 2025-67; Pub. 560)
20. Fund a deductible IRA if you qualify
The 2026 IRA limit is $7,500. Deductibility phases out if you or your spouse are covered by a workplace plan, including a solo 401(k), and your income exceeds the limits, so check before you count on the deduction.† (Notice 2025-67; Pub. 590-A)
21. Claim the retirement plan startup credit
Employers with 50 or fewer employees can claim a credit of up to $5,000 a year for three years for the costs of starting a plan, plus a separate credit for employer contributions of up to $1,000 per employee. You can't both deduct and claim a credit for the same costs. (Form 8881; IRS Retirement Plans Startup Costs Tax Credit)
22. Max out an HSA if you have a qualifying plan
If you have a high-deductible health plan, the 2026 HSA limits are $4,400 for self-only coverage and $8,750 for family coverage, plus a $1,000 catch-up at age 55 or older. Contributions are deductible, growth is tax-free, and qualified medical withdrawals are tax-free. (Rev. Proc. 2025-19; Pub. 969)
23. Deduct your health insurance premiums
Self-employed people with a net profit can deduct premiums for themselves, a spouse and dependents, and children under 27, using Form 7206. You can't take the deduction for any month you were eligible for an employer-subsidized plan, including through a spouse's job, and the deduction is limited to your net profit. (Form 7206 instructions)
24. S corporation owners can deduct health insurance too
Shareholders who own more than 2% of an S corporation can take the self-employed health insurance deduction, but the premiums generally must run through the corporation and be reported as wages on the owner's W-2.† (IRC §162(l); Notice 2008-1)
25. Don't forget half of your self-employment tax
You can deduct the employer-equivalent half of your self-employment tax when figuring adjusted gross income. It's automatic in tax software, but worth confirming on Schedule 1 if you prepare returns by hand. (Schedule SE; Schedule 1)
Part 5: Income and entity strategy
26. Claim the qualified business income deduction
The 20% QBI deduction for pass-through income is now permanent. Starting in 2026 there is also a $400 minimum deduction if you have at least $1,000 of qualified business income from a business in which you materially participate. (IRC §199A; Form 8995)
27. Protect QBI as your income rises
For 2026 the thresholds are $201,750 for single filers and $403,500 for joint filers. Above them, wage and property limits apply, and for service businesses the deduction phases out over a range that now spans $75,000 for single filers and $150,000 for joint filers. Retirement and HSA contributions lower taxable income and can help keep you under the threshold. (Rev. Proc. 2025-32; IRC §199A)
28. Weigh an S corporation election
An S corporation can reduce payroll tax by paying you a salary and distributing the remaining profit. The catch is that you must pay reasonable compensation for the work you do, and the IRS can reclassify distributions as wages if your salary is too low. Benchmark your pay against comparable roles and document it. (IRS S Corporation Compensation and Medical Insurance Issues; Form 1120-S instructions)
29. Ask about a pass-through entity tax election
If you're in a partnership or S corporation, your state may let the entity pay state income tax and deduct it at the entity level, which the IRS has said it will respect. Whether it helps depends on your state's rules, so ask your CPA.† (IRS Notice 2020-75)
30. Make sure you're running a business, not a hobby
The IRS looks at factors such as how you operate, your records and your intent to profit. Hobby income is taxable, and hobby expenses generally aren't deductible, so a genuine business needs genuine books.† (IRC §183; Pub. 535)
Part 6: Family and employees
31. Put your children on payroll for real work
In a sole proprietorship, wages paid to your child under 18 aren't subject to Social Security and Medicare tax, and a child under 21 is exempt from federal unemployment tax. The work must be real, age-appropriate and paid at a reasonable rate, and you need payroll records and a W-2. (IRS Family Employees)
32. Keep a child's pay under their standard deduction
The 2026 standard deduction for a single filer is $16,100, so a child paid that much or less in wages generally has no federal taxable income. Wages also count as earned income, which lets a working child fund a Roth IRA. (Rev. Proc. 2025-32; Pub. 929)
33. Claim the small business health care tax credit
Employers with fewer than 25 full-time equivalent employees that pay at least 50% of employee-only premiums for coverage through the SHOP Marketplace may qualify for a credit of up to 50% of premiums. Wage and headcount limits reduce it, and owners and more-than-2% S corporation shareholders aren't counted. (Form 8941; IRS Small Business Health Care Tax Credit)
Part 7: Timing and accounting methods
34. Shift income and expenses across the year-end line
If you use the cash method, you generally report income when you receive it and deduct expenses when you pay them. That lets you delay invoices until January and pay bills in December. Don't push it too far: income you have constructively received, such as a check you could have deposited, still counts this year. (Pub. 538)
35. Charge it in December
Cash-method businesses can generally deduct purchases in the year they're charged to a business credit card, even if the card isn't paid until next year. It's a simple way to pull a planned purchase into 2026.† (Pub. 535)
36. Use the 12-month rule for prepaid costs
You can deduct a prepaid expense in the current year if the benefit doesn't extend beyond 12 months or past the end of next tax year, whichever comes first. Insurance premiums, software subscriptions and rent are common candidates. (Treas. Reg. §1.263(a)-4(f); Pub. 538)
37. Write off uncollectible invoices correctly
Accrual-method businesses can deduct business bad debts for invoices they already counted as income. Cash-method businesses generally can't, because they never reported the income in the first place.† (Pub. 535)
38. Don't waste a loss year
Net operating losses generally carry forward, though a limit of 80% of taxable income applies to the amount you can use in later years.† A separate excess business loss limit applies to pass-through owners: for 2026 it is $256,000, or $512,000 for joint filers. (IRC §461(l); Rev. Proc. 2025-32)
39. Deduct start-up and organizational costs
You can deduct up to $5,000 of start-up costs and $5,000 of organizational costs in the year the business begins. Each amount is reduced dollar for dollar once the total passes $50,000, and the rest is amortized over 180 months. If you never launch, special rules apply. (Pub. 535)
Part 8: Research and development
40. Deduct domestic research costs again
The 2025 law permanently restored immediate deduction of domestic research and experimental costs for tax years beginning after 2024, and software development counts. Small businesses were also given a retroactive option to amend 2022 through 2024 returns, but that window appears to have closed in July 2026, so ask a CPA what's still available. (IRC §174A; Rev. Proc. 2025-28)
41. Coordinate the deduction with the research credit
If you also claim the research credit on Form 6765, you generally can't deduct the same costs twice. You either reduce your deduction by the credit or elect a reduced credit, so model both before you file. (Form 6765; Rev. Proc. 2025-28)
Part 9: Everyday deductions and compliance
42. Get the meals rules right
Business meals with clients are generally 50% deductible when you or an employee is present and the meal isn't lavish. Entertainment is not deductible, and beginning in 2026 meals provided for the convenience of the employer and employer-run cafeterias are no longer deductible either. Keep who, why, when and where for each meal. (Pub. 463)
43. Mind the $25 gift limit
You can deduct no more than $25 of business gifts per person per year, and you need records showing the business purpose, a description and the date. Gifts that could be considered entertainment are generally treated as entertainment. (Pub. 463; IRS Business Gifts FAQ)
44. Deduct marketing, website and software costs
Advertising, your website, hosting, domains and business software subscriptions are ordinary and necessary expenses. Larger one-time builds, such as custom software, may need different treatment, so keep invoices.† (Pub. 535)
45. Deduct professional fees, insurance and licenses
Accounting and legal fees, business insurance premiums, professional dues and license fees are generally deductible when they relate to your business. Personal portions, such as your own life insurance, are not.† (Pub. 535)
46. Deduct business interest and fees
Interest on loans used for the business and bank and merchant processing fees are deductible. Keeping a separate business account and card makes the allocation clean and the audit trail short.† (Pub. 535)
47. Deduct education that sharpens your current skills
Courses, conferences and training that maintain or improve skills in your existing business are generally deductible. Education that qualifies you for a new trade or business is not.† (Pub. 535)
48. Get your 1099 paperwork right
For payments made after 2025, you generally must file Form 1099-NEC or 1099-MISC only when you pay a vendor $2,000 or more in the year, up from $600, with indexing beginning in 2027. The Form 1099-K threshold has returned to $20,000 and more than 200 transactions. Collect a W-9 from every contractor anyway: the deduction doesn't depend on the filing threshold, but your documentation does. (P.L. 119-21; IRC §6041)
49. Keep records the IRS will accept
The IRS requires adequate records to support deductions. Use a separate business bank account and card, save receipts, keep a mileage log, measure your home office, and store everything for at least three years from the filing date.† (Pub. 583)
50. Harvest investment losses
If you also invest, capital losses offset capital gains plus up to $3,000 of ordinary income per year, with the rest carried forward. Watch the wash-sale rule if you buy back the same investment within 30 days.† (Topic 409; Pub. 550)
2026 key dollar limits at a glance
The limits below recur throughout the tips that follow; here they are in one place for quick reference.
Standard mileage rate: 72.5 cents per mile through June 30, 2026, then 76 cents per mile from July 1 onward
Section 179 expensing limit: $2,560,000, phasing out once $4,090,000 of property is placed in service
Bonus depreciation: 100%, permanent for qualified property acquired after January 19, 2025
Home office simplified method: $Remote Business foot up to Remote Business feet, for a maximum of $1,500
Solo 401(k) employee deferral: $24,500, plus an $8,000 catch-up at 50 or older (or $11,250 for ages 60 through 63)
SEP IRA contribution: up to 25% of compensation, capped at $72,000
SIMPLE IRA limit: $17,000, plus a $4,000 catch-up at 50 or older
Traditional or Roth IRA limit: $7,500
HSA contribution: $4,400 for self-only coverage or $8,750 for family coverage, plus a $1,000 catch-up at 55 or older
Qualified business income deduction: 20%, permanent, phasing out above $201,750 for single filers or $403,500 for joint filers
Form 1099-NEC/MISC filing threshold: $2,000 per vendor per year, up from $600
Excess business loss limit: $256,000 for single filers or $512,000 for joint filers
A year-end calendar
By October 15: extended 2025 returns are due, and this is the last day to fund a 2025 SEP IRA.
Before December 31: buy and place equipment in service, elect solo 401(k) deferrals, pay prepaid expenses, make business credit card purchases you were planning anyway, pay your children's wages, and line up invoice timing.
Late January 2027: file your 1099s for payments of $2,000 or more, and pay the final 2026 estimated tax installment if you owe one.†
By your filing deadline: make 2026 IRA and HSA contributions, and fund a SEP or solo 401(k) employer contribution.
Before you act
These rules interact with each other. A purchase that makes sense under Section 179 might hurt your QBI deduction, a high salary might lower your S corporation savings, and your state may not follow federal bonus depreciation. Many states also handle pass-through entity tax and retirement deductions differently than the IRS does. Before you commit real money, run the numbers with a CPA or enrolled agent who knows your state's rules.