This post is general education, not tax advice. Tax rules change often, phase-out thresholds vary by income and filing status, and federal and state law interact in ways that add complexity. Confirm any deduction strategy with a qualified CPA or tax attorney before you act on it. We can refer you to experienced tax professionals if you need one.
Most owners watch revenue and expenses closely. Deductions, credits and exclusions get less attention, usually until tax season, when the window to act is already closing.
The tax code gives business owners four general kinds of relief. Deductions reduce the income subject to tax. Credits reduce the tax owed, dollar for dollar. Exemptions lower taxable income. Exclusions take certain kinds of income out of the taxable pool entirely. Below, in plain language, are eleven tax breaks that regularly go unclaimed in small and lower middle market businesses.
Blackland Advisors is an M&A advisory firm, not a tax practice, so treat none of this as tax advice. It is still worth knowing these provisions well enough to ask your CPA good questions, especially if a sale is anywhere on your horizon. Tax efficiency and M&A outcomes are more closely linked than most owners expect, and we come back to that at the end.
1. The Home Office Deduction
If you run the business from a dedicated space in your home, you can deduct the costs of that space. The test is exclusive and regular use for business. A guest room where you sometimes open a laptop does not qualify; a room you use consistently as an office does. Eligible expenses include a proportionate share of rent or mortgage interest, utilities, insurance, and maintenance costs tied directly to the home.
There are two ways to calculate it. The simplified option applies a flat $5 per square foot to the office area, capped at 300 square feet, for a maximum deduction of $1,500. The regular method divides the office square footage by the home's total area and applies that percentage to actual home expenses. A 200-square-foot office in a 2,000-square-foot home gets you 10% of all eligible costs: mortgage interest, utilities, homeowner's insurance, repairs, and in some cases part of the improvements.
The regular method takes more paperwork but often produces a bigger deduction, especially in higher-cost housing markets. If you have used the simplified method by default and never run the regular method against your actual costs, you may have been leaving a real deduction on the table every year.
The Sale-of-Home Implication
If you take depreciation on a home office under the regular method, the office portion of the house may be subject to depreciation recapture when you eventually sell it, even if the overall sale qualifies for the primary residence exclusion. The annual savings usually outweigh the recapture cost, so the deduction is still worth taking. Just know about the recapture before you commit to the regular method.
2. Vehicle Expense Deductions
Vehicle costs are deductible for the business-use portion only, and there are two methods. The standard mileage rate (72.5 cents per mile for January through June 2026, and 76 cents from July 1, 2026) is the simpler one. It requires a contemporaneous mileage log showing the date, destination, business purpose and miles driven for each trip. The actual expenses method deducts real costs (fuel, maintenance, insurance, registration, lease payments and depreciation) multiplied by the share of the year's miles driven for business.
A vehicle used only for business lets you deduct 100% of its costs. With a mixed-use vehicle you have to track personal miles and exclude them. The IRS looks at vehicle deductions fairly often, so keep the log current.
Choosing the Right Method
The standard rate usually works better for high-mileage drivers in lower-cost vehicles. Actual expenses tend to win for owners who drive premium vehicles with large lease or depreciation costs. Whichever method you choose in the first year a vehicle is used for business generally stays with that vehicle for its life.
3. Depreciation of Capital Assets
Equipment, machinery, vehicles and commercial real estate lose value over time, and depreciation lets a business recover that cost over the asset's useful life. Straight-line depreciation spreads the cost evenly. Accelerated depreciation under the Modified Accelerated Cost Recovery System (MACRS) puts more of the deductions in the early years of ownership.
Section 179 and Bonus Depreciation
Section 179 lets a business deduct the full cost of qualifying equipment and property in the year of purchase instead of depreciating it, subject to annual limits and income phase-outs. Bonus depreciation works in a similar way, with different eligibility rules and a phase-down schedule that has kept changing in recent years.
Depreciation is added back in any EBITDA calculation, so the method you pick for tax purposes has no effect on normalized earnings or on what the business is worth in a sale. Taking the most aggressive depreciation available lowers this year's tax bill and leaves the buyer's price where it was. Our guide What Is EBITDA? shows how depreciation is treated in the calculation and why the add-back works that way.
4. Retirement Plan Contributions
Contributions to a qualified retirement plan reduce taxable income in the year you make them. For self-employed owners and small business operators, the SEP-IRA and Solo 401(k) allow sizable pre-tax contributions that scale with income. A SEP-IRA allows up to 25% of net self-employment income, capped at $72,000 for 2026. A Solo 401(k) allows both employee and employer contributions, which gives high earners more room.
The New Plan Startup Credit
A business that sets up a new qualified retirement plan, and hasn't had one in the prior three years, may qualify for a startup cost credit of up to $5,000 a year for the first three years. The SECURE 2.0 Act expanded the credit.
Supplemental retirement contributions run through the business, especially above-market contributions to non-standard plans, can often be added back to normalized earnings in a sale. A new owner would not necessarily keep them at the same level or in the same structure.
Our guide on acceptable EBITDA add-backs lists supplemental retirement contributions among the add-backs owners most often miss, and covers the documentation you need to defend them in a quality-of-earnings review.
5. Health Insurance Premiums for the Self-Employed
If you are self-employed, pay for your own health coverage, and aren't eligible for employer-sponsored insurance through a spouse's job, you can deduct premiums for yourself, your spouse and your dependents directly from adjusted gross income. It's an above-the-line deduction, so you get it whether or not you itemize. It can't exceed the business's net profit.
S-Corporation Owners: Run It Through Payroll
S-corporation owners get this wrong a lot. The premiums have to be included in the shareholder-employee's W-2 wages for the above-the-line deduction to be available. If the S-corporation pays them directly and they never flow through payroll, they don't qualify.
6. Education and Training Expenses
Education and training you pay for on behalf of employees is fully deductible as an ordinary and necessary business expense, as long as it maintains or improves skills the employee needs in their current role. Training for a new career or a substantially different role generally does not qualify.
Under a qualified educational assistance program (Section 127), a business can also give each employee up to $5,250 a year in educational assistance. The employee excludes it from gross income and the employer keeps the deduction.
Buyers looking at an acquisition like to see documented training spend. It tells them the workforce was developed on purpose and that institutional knowledge has been passed on in an organized way. Management depth and workforce infrastructure are among the main factors buyers use to set the multiple; our guide on business valuation drivers goes through each of them.
7. Interest on Business Loans
Interest on debt used for legitimate business purposes is deductible as an ordinary and necessary business expense. The borrower has to be legally liable for the debt, the lender has to be a real commercial source, and the money has to have gone to an actual business need. Only the interest is deductible, not principal repayment.
Business Interest Limitation: Section 163(j)
Larger businesses may have the deduction limited under Section 163(j), which caps it at 30% of adjusted taxable income once gross receipts pass a certain threshold. If you regularly carry meaningful debt, ask your CPA whether the limit applies to you.
8. Startup Cost Deductions
If you recently launched a business, you can deduct up to $5,000 of qualifying startup expenses in the first year of operations, provided total startup costs don't exceed $50,000. Above $50,000 the first-year deduction phases out dollar for dollar and is gone entirely at $55,000. At that point all startup expenses are amortized over 180 months.
Organizational costs (the expenses of creating the legal structure of the business) get a parallel deduction with the same $5,000 first-year limit.
9. The Bad Debt Deduction
A receivable that becomes uncollectible can be written off as a business expense. The IRS requires that the debt be provably uncollectible and that you made reasonable collection efforts before writing it off. Business bad debts are fully deductible as ordinary losses, which is better treatment than personal bad debts get.
Cash-basis and accrual-basis taxpayers are treated differently here. An accrual-basis business already counted the unpaid invoice as income, so it can write it off once it is uncollectible. A cash-basis business never recognized that revenue, so for customer receivables the deduction is mostly unavailable.
Before going to market, go through the receivables aging and write off the accounts you will not collect so buyers see a clean balance. A buyer who finds large aged receivables in diligence will either exclude them from the working capital calculation or require a reserve, and either way it comes out of the purchase price. Our guide on how to prepare your financials for a business sale treats receivables quality as one of five areas of financial preparation.
10. Obsolete Inventory Write-Offs
Businesses that carry physical inventory, particularly in manufacturing, distribution and retail, build up stock that eventually can't be sold. Inventory that can't be sold at its recorded cost can often be written down or written off, which reduces taxable income. The IRS generally requires that it be disposed of through liquidation at a loss, donation, or physical destruction, with documentation made at the time.
Inventory write-downs run through cost of goods sold, so unlike depreciation they reduce both reported net income and reported EBITDA. A large write-down in the year before a sale can cut the purchase price by a multiple of the write-down, potentially five to eight times at typical lower middle market multiples. If you have material obsolete inventory, deal with it two or three years before your target transaction date. Our post on the cost of waiting to sell your business looks at several similar timing decisions.
11. Energy Efficiency Tax Incentives
Federal incentives for energy-efficient business investment have grown in recent years, particularly since the Inflation Reduction Act. Upgrades to lighting, HVAC systems, building insulation, manufacturing equipment or commercial vehicles may qualify for deductions under Section 179D, and renewable energy installations may qualify for investment tax credits.
The upgrades also lower operating costs, which shows up in EBITDA over time. Say a $50,000 energy efficiency upgrade cuts annual utility costs by $15,000. At typical lower middle market multiples, that saving could add $75,000 to $120,000 to enterprise value, on top of whatever credit or deduction it produces in the year of installation.
How Tax Efficiency Connects to Business Valuation
Most owners don't see how closely tax planning and M&A outcomes are tied until they are deep in a sale process. The habits that lower your annual tax bill (clean expense categories, documented asset values, well-maintained retirement contributions, accurate inventory records, losses recognized on time) are the same ones that give you a stronger, more defensible earnings picture when the business goes to market.
Buyers apply a multiple to normalized EBITDA to get enterprise value. Expenses that are categorized and documented cleanly hold up far better as legitimate add-backs in a quality-of-earnings review than expenses buried in inconsistent accounts. At a 6x multiple, each dollar of legitimate add-back is six dollars of enterprise value. Our guide on add-backs and how owners support a higher valuation before a sale covers the whole process: each add-back category, the documentation standard, and the reclassification approach some sellers use before going to market.
We regularly work with owners who are two or three years out from a transaction. Financial decisions made in that window affect the multiple the business can support and how confident buyers are when they negotiate, so tax planning belongs inside exit planning. One of the highest-stakes tax decisions in any deal is whether it is structured as an asset sale or a stock sale. The difference in after-tax proceeds between the two can easily exceed the value of every deduction in this post combined, and you want to understand it well before you get to the negotiating table. Our guide on asset sale vs. stock sale tax implications covers the tax treatment of each structure, including depreciation recapture and the double-tax problem for C-corporation owners.