Tax planning is not something that happens once a year when a return is due. It’s an ongoing process of making decisions throughout the year, how the business is structured, when income and expenses are recognized, what deductions and credits are being claimed, that determines how much of your earnings you actually keep. Businesses that treat tax planning as a year-round discipline consistently pay less in taxes, legally and predictably, than those that scramble each spring.
The passage of the One Big Beautiful Bill Act (OBBBA) has also introduced permanent extensions and new thresholds to several key small business tax provisions, making proactive planning even more valuable right now. This guide walks through the strategies that make the biggest difference for small business owners, from choosing the right entity structure to the specific deductions and credits most businesses are leaving on the table.
Choose the Right Business Structure
How your business is legally structured determines how your income is taxed, and this single decision often has a bigger impact on your tax bill than any individual deduction.
How the Main Entity Types Are Taxed
A sole proprietorship is the simplest structure, but profits pass through as personal income, which means paying both income tax and self-employment tax on the full amount. An LLC offers liability protection with flexibility, since it can elect to be taxed as a sole proprietorship, a partnership, or an S corporation. An S corporation allows owners to split their earnings between a salary and distributions, which can meaningfully reduce self-employment tax exposure. A C corporation pays its own corporate tax, currently a flat 21%, separate from what the owner pays personally on salary or dividends.
When It Makes Sense to Change Structures
For many growing LLCs, electing S corporation status once annual profit exceeds roughly $100,000 can reduce the overall self-employment tax burden by several thousand dollars a year, as long as the owner pays themselves a reasonable salary that meets IRS requirements. On the other hand, a C corporation only makes sense in specific situations, typically when a business needs to raise capital through multiple stock classes. If that’s not a factor, a C-corp structure may simply be adding an extra layer of tax without providing a real benefit.
This is not a decision to make without guidance. The right structure depends on your income level, growth plans, and how you intend to pay yourself, and it’s worth revisiting periodically as the business changes.
Maximize Ordinary Business Deductions
Every dollar spent on legitimate, ordinary, and necessary business expenses reduces taxable income. The most commonly claimed deductions include rent and utilities for business space, business insurance premiums, employee wages and benefits, payments to independent contractors, office supplies and equipment, and advertising and marketing costs.
Deductions That Often Get Missed
A few deductions are worth calling out specifically because they’re frequently underused. The home office deduction allows a business owner to deduct a portion of mortgage interest, utilities, and maintenance costs for space used exclusively for business. Vehicle mileage used for business purposes is deductible using either the standard mileage rate or actual expenses. Business travel and meals, when properly documented, remain deductible within IRS guidelines.
Why Documentation Determines What You Can Claim
The key to capturing these deductions fully is documentation. Keeping receipts, invoices, and clear records for every business expense throughout the year, rather than trying to reconstruct them at tax time, is what actually determines whether a legitimate deduction gets claimed or missed.
Take Advantage of the Qualified Business Income Deduction
The Qualified Business Income deduction, often called the 20% pass-through deduction, remains one of the most valuable tax benefits available to small business owners. It allows eligible sole proprietors, partnership owners, and S corporation owners to deduct up to 20% of their qualified business income from taxable income.
What Changed Under OBBBA
Under OBBBA, this deduction has been made permanent, and the income thresholds where the deduction begins to phase out have increased significantly starting in 2026, rising from $100,000 to $150,000 for joint filers and from $50,000 to $75,000 for single filers. A minimum deduction of $400 now also applies to qualifying businesses with at least $1,000 of active income.
What This Looks Like in Practice
To put this in perspective: a consulting business earning $120,000 in annual profit could deduct up to $24,000 through this provision alone, assuming it meets all eligibility requirements. Because the deduction phases out at higher income levels and excludes certain service-based industries above specific thresholds, confirming eligibility with a tax professional is essential before counting on this deduction in your planning.
Leverage Section 179 and Bonus Depreciation
When a business purchases equipment, vehicles, or technology, the cost is normally recovered gradually through depreciation over several years. Section 179 and bonus depreciation both allow businesses to accelerate that deduction into the year the asset is placed in service.
Section 179
Section 179 lets a business deduct the full cost of qualifying equipment, up to an annual limit, in the same year it’s purchased and used. For 2025, that limit rose to $2.5 million, phasing out for businesses whose total qualifying purchases exceed $4 million.
Bonus Depreciation
Bonus depreciation applies when purchases exceed the Section 179 cap, or when a business prefers to preserve some depreciation for future years. It allows an additional immediate deduction for both new and used qualifying assets.
What the Savings Look Like
As an example, a business purchasing $100,000 in new equipment could deduct the full amount in the year of purchase under either provision, potentially saving $20,000 to $30,000 in taxes depending on the business’s combined federal and state tax rate. The timing matters here: assets need to be placed in service before year-end to qualify for that year’s deduction.
Contribute to a Retirement Plan
Retirement contributions reduce taxable income today while building long-term personal wealth, making them one of the most efficient tax planning tools available to a small business owner.
Solo 401(k)
Works well for self-employed individuals or business owners with no employees other than a spouse, allowing contributions in two ways, as both employee and employer, with a combined contribution limit that can reach $70,000 for 2025 (or $77,500 with the catch-up contribution for those 50 and older).
SEP IRA
A straightforward option for businesses that do have employees, allowing the employer to contribute up to 25% of income, with minimal administrative overhead. Contributions must be made at the same percentage for every eligible employee.
SIMPLE IRA
Suits businesses with up to 100 employees that want to offer a retirement benefit without the complexity of a full 401(k) plan, with lower contribution limits but simpler administration.
When to Set These Up
Because these plans generally need to be established before the end of the tax year to count toward that year’s deduction, this is a strategy that requires planning well ahead of the filing deadline, not something to consider in the final weeks of December.
Deduct Health Insurance Premiums and Use an HSA
Health Insurance Premiums
Self-employed business owners can generally deduct 100% of health insurance premiums paid for themselves, their spouse, and their dependents, including health, dental, and vision coverage.
Health Savings Accounts
A Health Savings Account adds another layer of tax efficiency for businesses with a qualifying high-deductible health plan. Contributions are made pretax, the account grows tax-free, and withdrawals for qualified medical expenses are tax-exempt as well, making it one of the few triple-tax-advantaged accounts available. For 2025, contribution limits sit at $4,300 for self-only coverage and $8,550 for family coverage, with an additional $1,000 catch-up contribution available for individuals 55 and older.
Claim Available Tax Credits
Deductions reduce taxable income, but credits reduce your tax bill dollar for dollar, which often makes them even more valuable when a business qualifies.
Credits Worth Reviewing Every Year
The Small Business Health Care Tax Credit applies to businesses that pay a significant portion of employee health insurance premiums. The Work Opportunity Tax Credit rewards businesses that hire from certain groups facing employment barriers. The Research and Development Credit applies to businesses developing new products, processes, or software, and isn’t limited to companies that consider themselves “tech” businesses. The Disabled Access Credit covers expenses related to making a business more accessible, up to $5,000. Businesses that make charitable contributions or sponsor charitable events may also qualify for a credit worth a meaningful portion of the donation.
Why These Get Missed
Many of these credits go unclaimed simply because business owners don’t realize they qualify. A yearly review with a tax advisor, specifically looking for credits rather than just deductions, often uncovers savings that would otherwise be missed entirely.
Time Income and Deductions Strategically
The timing of when income is received and when expenses are paid can shift a meaningful amount of tax liability from one year to another, which matters most when a business expects its tax bracket to change.
Deferring Income
If deferring income makes sense, a cash-basis business might delay invoicing near year-end so payment arrives, and is taxed, in the following year. The same logic applies to a planned asset sale that would trigger a capital gain: pushing the sale into the next tax year can shift when that gain is taxed.
Accelerating Deductions
The opposite strategy, accelerating deductions, works well when a business wants to reduce the current year’s taxable income. Making a planned equipment purchase, prepaying certain expenses, or completing a scheduled investment before December 31 pulls that deduction into the current tax year rather than the next one.
Choosing Between the Two
Neither approach is universally right. The correct choice depends on which year’s income is likely to be taxed at a higher rate, and that’s a decision best made with a clear view of the business’s full-year financial picture, not a last-minute scramble in December.
Employ Family Members Strategically
Hiring a spouse or children to perform legitimate work for the business can shift income into lower tax brackets while keeping the money within the family. Wages paid to a child for genuine work, managing social media, handling administrative tasks, assisting with deliveries, are deductible as a business expense, and the child may owe little to no federal income tax on that income depending on the standard deduction.
The key word here is legitimate. The work needs to be real, the wages need to be reasonable for the work performed, job duties should be documented, and payroll taxes need to be handled correctly. Done properly, this strategy provides a real tax benefit; done carelessly, it’s one of the more commonly scrutinized areas in a small business audit.
Keep Accurate, Real-Time Financial Records
Every strategy on this list depends on one foundational habit: accurate, current bookkeeping. Without clean records, deductions get missed, credits go unclaimed, and quarterly tax estimates end up being little more than guesses.
Using accounting software to track income and categorize expenses as they happen, rather than reconstructing a year’s worth of transactions at tax time, makes every other strategy on this list easier to execute correctly. This matters even more given that electronic payment platforms are facing increased IRS scrutiny, which makes clearly separating personal and business transactions more important than ever. A monthly reconciliation habit, checking that the books match reality every single month, catches errors while they’re still easy to fix.
Review Quarterly Estimated Tax Payments
Many business owners are surprised by a large tax bill at year-end simply because their quarterly estimated payments didn’t keep pace with actual income throughout the year. If a business has variable or seasonal income, sticking with the same estimated payment amount every quarter can lead to a significant underpayment penalty, or an unnecessarily large payment sitting with the IRS instead of in the business.
Recalculating estimated payments each quarter, especially after a strong or weak quarter, keeps the business’s tax obligations aligned with what’s actually being earned, and helps avoid the unpleasant surprise of an unexpectedly large bill in April.
Work With a Tax Advisor Year-Round
Every strategy in this guide works best when it’s part of an ongoing conversation with a tax professional, not a once-a-year filing exercise. Tax law changes regularly, OBBBA alone introduced sweeping updates to several of the provisions covered here, and an advisor who understands your business can identify which new opportunities actually apply to your situation before deadlines pass.
A good advisor does more than file your return. They analyze cash flow to help plan the timing of major purchases, help optimize how an S corporation owner splits salary and distributions, and build a tax strategy that supports the business’s broader financial goals rather than treating tax planning as an isolated task.
Building Tax Planning Into Your Broader Financial Strategy
The strategies covered here work best when they’re integrated into how a business manages its finances overall, not treated as a separate, once-a-year task disconnected from everyday decisions. Entity structure affects how you pay yourself. Retirement contributions affect cash flow. The timing of a major purchase affects both this year’s and next year’s tax picture. These decisions are all connected, which is exactly why proactive, year-round planning consistently outperforms reactive filing.
At Kaizen CFO Services, our fractional CFO and CFO consulting teams help small businesses build tax strategy directly into their financial planning, working alongside your tax preparer to make sure every decision throughout the year supports a stronger outcome at filing time.
Book a Free 30-Minute Tax Strategy Consultation – talk through your business’s tax planning with an experienced CFO. No obligation, no sales pressure.
