Is Your Business Buying Trucks or Equipment?
If you’re buying equipment, a vehicle, or making improvements to your business, you’ve probably heard about bonus depreciation and Section 179. Both can help you write off large purchases and reduce your taxes - but they don’t work the same way. And choosing the wrong one can cost you more than you think.
So what’s better: bonus depreciation or Section 179?
Like most things in tax planning - it depends. But once you understand how each one works, the decision becomes a lot clearer.
What Is Bonus Depreciation?
Bonus depreciation allows you to write off a large portion - or even 100% - of a qualified business purchase in the first year.
Under current rules, many assets placed in service after January 19, 2025, qualify for 100% bonus depreciation. That means you can deduct the full cost right away instead of spreading it out over several years.
This applies to things like:
- Equipment and tools
- Vehicles used for business
- Computers and software
- Certain building improvements
For many business owners, this is the go-to option because it creates a large, immediate tax deduction.
What Is Section 179?
Section 179 also lets you write off the cost of business assets upfront - but with more limitations. For 2025, you can expense up to $2.5 million in qualifying purchases, but there are a few important catches:
- Your deduction is limited to your business income
- If you buy too much equipment, the deduction starts to phase out
- You can’t use it to create a loss
That last point is where Section 179 really differs from bonus depreciation.
The Biggest Difference Most People Miss
Here’s the part that doesn’t get explained clearly enough. Bonus depreciation can create a loss. Section 179 generally cannot. At first glance, creating a loss sounds like a good thing. It can wipe out your taxable income for the year and even carry forward into future years.
But there’s a catch.
How This Affects Your Self-Employment Taxes
If you’re self-employed, this is where the decision really matters. When bonus depreciation creates a loss, that loss may carry forward as a net operating loss (NOL). While that can reduce your future income taxes, it typically does not reduce your self-employment taxes in future years.
Section 179 works differently.
If your Section 179 deduction is limited and carried forward, those future deductions can reduce both your taxable income and your self-employment income when you use them. That can be a big deal - especially for contractors, consultants, and anyone paying self-employment tax.
So…Which One Is Better?
In many cases, bonus depreciation is the default choice. It’s simpler, has fewer limitations, and gives you the biggest immediate write-off. That’s why it’s often recommended first. But that doesn’t mean it’s always the best move.
Section 179 may make more sense if:
- You want to avoid creating a large loss this year
- You expect higher income in future years
- You want deductions that will reduce self-employment taxes later
This is where strategy comes into play - not just deductions.
A Real-World Example
Let’s say you buy $100,000 worth of equipment for your business.
With bonus depreciation, you might write off the entire amount this year - potentially reducing your taxable income to zero.
With Section 179, your deduction may be limited to your business income, with the rest carried forward.
That carryforward could help you in future years, especially if your income is expected to grow.
The “best” option depends on whether you want the tax savings now - or spread out over time.
What About Vehicles and Real Estate Improvements?
This comes up a lot. Both bonus depreciation and Section 179 can apply to:
- Business vehicles (including certain SUVs and trucks)
- Equipment and machinery
- Qualified improvement property (interior updates to commercial buildings)
But the rules can get very specific - especially with vehicles - so it’s important to plan before you buy, not after.
Bonus Depreciation vs. Section 179: Which One Fits Your Situation?
Bonus depreciation vs. Section 179 isn’t about which one is “better” across the board. It’s about which one fits your situation right now - and where your business is headed. For some business owners, the goal is to reduce taxes as much as possible this year. For others, it’s about creating a smarter long-term plan that balances income, deductions, and self-employment taxes.
If you’re making a major purchase or thinking about it, this is one of those decisions that’s worth getting right before the year ends. If you want help walking through your options, reach out. A quick conversation now can save you a lot more than you’d expect.
Related Posts:
- Should You Skip Home Office Depreciation to Avoid Taxes?
- What Is 100% Bonus Depreciation Under the OBBBA?
- Can I Change a Vehicle from Business Use to Personal?
- Can I Deduct the Same Things for Multiple Businesses?
- How Do I Know If I Should Itemize Deductions in 2026?
Small Business Tax Services
As an expert in small business tax services and tax consulting Ken-Mar Tax eats, sleeps and breathes small business tax strategies. Being an enrolled agent allows founder, Ken Weinberg, to represent you to the IRS - something only a CPA, tax attorney and Enrolled Agent can do. EAs are the only federally licensed tax practitioners who specialize in taxation and also have unlimited rights to represent taxpayers before the IRS. It also means he is continuously being updated on the new IRS tax codes and taking classes from the IRS that provide guidance on how to file returns so that they are not "flagged."
When you get your taxes prepared by Ken Mar Tax you also have the option to purchase the Tax Audit Protection Plan to avoid the extra costs of paying for audit representation. If you are audited by the IRS, State of Ohio or local taxing authorities, Ken-Mar Tax will meet with the taxing authorities on your behalf to negotiate a settlement for you. The fee covers all costs up to the Appeals level, including up to 15 hours of correspondence with the auditing party – either the IRS, State of Ohio or locality.
