Most business owners still think bonus depreciation is an all or nothing 100 percent write off. That was true a couple of years ago. It is not true for the 2024 and 2025 tax years, and if you keep acting like it is, you will leave five and sometimes six figures of tax savings on the table or get surprised by a much larger tax bill in 2026.

Here is the bottom line on bonus depreciation 2024 2025: the rule did not disappear, but it is shrinking every year. If you understand the phase down and pair it with Section 179, smart timing and the right entity structure, you can still turn big equipment and technology purchases into a powerful tax shield.

Quick Answer: How Bonus Depreciation Works In 2024 And 2025

For federal tax purposes, bonus depreciation lets you deduct a large percentage of the cost of qualifying business property in the year you place it in service instead of spreading the deduction over several years using regular MACRS depreciation. Under the Tax Cuts and Jobs Act, the rate was 100 percent through 2022, then began to phase down:

• 2023: 80 percent bonus
• 2024: 60 percent bonus
• 2025: 40 percent bonus
• 2026: 20 percent bonus
• 2027 and later: 0 percent bonus under current law

These percentages apply to new and used qualifying property with a recovery period of 20 years or less, certain computer software, and some improvements to nonresidential real property. The details are in IRS Publication 946, which explains depreciation in plain language.

Understanding The Phase Down: Why The Calendar Suddenly Matters

If you own an LLC, S corporation, or closely held C corporation, the bonus schedule has turned your purchase calendar into a tax planning tool. Buying the same $200,000 of qualifying equipment in different years has dramatically different results.

Side By Side Example For A California Contractor

Assume Maria runs a profitable construction company taxed as an S corporation. She is looking at a $200,000 package of equipment and heavy duty trucks that qualify for bonus depreciation and MACRS five year property.

• Placed in service in 2024: 60 percent bonus = $120,000 immediate deduction. The remaining $80,000 goes into regular MACRS, giving roughly another $32,000 of first year depreciation. Total first year write off roughly $152,000. At a combined federal and California rate of 35 percent, that is about $53,200 of tax savings.
• Wait until 2025: 40 percent bonus = $80,000 immediate deduction. Remaining $120,000 goes into MACRS, maybe another $24,000 in first year regular depreciation. Total first year write off around $104,000, worth about $36,400 of tax savings.

Same asset, same business, but the timing difference between 2024 and 2025 is about $48,000 of additional deduction and nearly $17,000 of cash tax saved in year one.

If you are a growing owner operated company, these are not theoretical numbers. They decide whether you have the cash to hire another employee, buy an additional truck, or expand into a new market.

How This Interacts With Section 179

Section 179 expensing is a separate immediate deduction for qualifying property, with a dollar limit and a taxable income cap. In 2024, the maximum Section 179 deduction is in the ballpark of $1.22 million, phasing out when you place more than about $3.05 million of qualifying property in service. Section 179 also covers many of the same assets as bonus depreciation, plus certain building improvements.

You can stack Section 179 and bonus depreciation. Typically, you:

• Use Section 179 first on assets where you want flexibility (you can pick and choose by asset), and
• Apply bonus depreciation to the remaining basis on qualifying property.

For many business owners in California, the optimal play for the next two years is to use Section 179 tactically and treat the shrinking bonus percentages as a timing game instead of a single year opportunity.

Linking To A Bigger Strategy Hub

If you want to see how this ties into entity choice, payroll, and California specific rules, KDA has a detailed resource for owners. For a deeper dive into how depreciation fits into the broader picture of profit extraction, see our California business owner tax strategy hub, which walks through integrated planning instead of isolated year end moves.

Using Bonus Depreciation 2024 2025 To Engineer Your Taxable Income

The phase down means you can no longer just dump every qualifying asset into 100 percent bonus and call it a day. Instead, think of bonus depreciation as one dial on the dashboard you use to control your taxable income in a given year.

Scenario 1: S Corporation Owner Managing QBI And Payroll

Take Jason, who runs a marketing agency taxed as an S corporation. His company expects $600,000 of profit before owner salary and depreciation. He pays himself a $200,000 W 2 salary, leaving $400,000 of pass through income potentially eligible for the Qualified Business Income (QBI) deduction, which is generally 20 percent of QBI subject to limits under IRS Publication 535.

He plans to invest $150,000 in new servers, computers, and office build out that qualify for bonus depreciation and Section 179.

• If he takes full Section 179 and bonus deductions in 2024, his QBI might drop from $400,000 to $250,000. His QBI deduction falls from $80,000 to $50,000. He saves tax now, but also shrinks a valuable 20 percent deduction.
• If he limits Section 179 and stretches some deductions into 2025, he may keep QBI higher in 2024 and still have solid deductions next year when the bonus rate drops.

The right answer is not always to maximize first year write offs. It is to smooth income across years and across your W 2 and pass through buckets so that you capture QBI without triggering phaseouts.

Scenario 2: Real Estate Investor Pairing Cost Segregation With The Phase Down

Real estate investors do not get bonus depreciation on land or the full building, but they do get it on components reclassified to shorter lives using a cost segregation study. For instance, a $2 million small apartment building might have $400,000 to $600,000 of five and seven year property that qualifies for bonus depreciation.

Placed in service in 2024, a cost segregation driven bonus deduction could be 60 percent of that shorter life bucket, minus any Section 179 you choose to take. In 2025, the same building only gets 40 percent bonus. That is the difference between maybe $300,000 of first year bonus and $200,000, before regular MACRS depreciation. At a 37 percent federal bracket plus California tax, that might be $50,000 or more of first year cash savings left on the table if you wait.

If you are an active or materially participating investor, that depreciation can offset other income. If you are passive, it can still build up suspended losses that shelter future rental or disposition income. Either way, timing matters.

Pro Tip: Model Before You Buy

Before pulling the trigger on a major asset purchase, it is worth running a quick projection. A simple way to sanity check your decision is to plug your expected business income and extra depreciation into a small business tax calculator so you can see how much tax you are actually moving between years.

Red Flag Alert: Common Bonus Depreciation Mistakes In 2024 And 2025

As the percentages shrink, the IRS focus on whether you are legitimately eligible to claim bonus depreciation is not going away. In fact, sloppy implementation may stand out more when your first year deductions are large compared to your reported asset base.

Mistake 1: Thinking Every Asset Qualifies

Bonus depreciation only applies to specific types of property. Qualifying property generally includes tangible personal property with a recovery period of 20 years or less, certain computer software, qualified film and television productions, and certain improvements to nonresidential real property (qualified improvement property).

It does not apply to land, inventory, or assets used partly for personal purposes unless you meet strict business use thresholds. For example, if you buy a vehicle and do not track mileage, claiming it as 100 percent business use and taking full bonus depreciation is a fast way to invite questions.

Mistake 2: Ignoring The Placed In Service Date

You only get bonus depreciation in the year property is placed in service, not when you sign the purchase order or cut the check. A machine that is delivered on December 28 but not installed, tested, and ready for its regular business use until January is a next year asset. That can move a 60 percent bonus into a 40 percent year without you realizing it.

Mistake 3: Forgetting State Mismatches, Especially In California

Several states including California do not follow federal bonus depreciation. That means your federal return might show a large first year deduction, while your California return spreads that same cost over several years. If you assume your federal deduction automatically shows up on your state taxes, your cash flow projections will be wrong.

This is one area where having outsourced bookkeeping and payroll support tied directly to your tax planning can keep you out of trouble. When your accounting system tracks tax basis and book basis correctly from day one, your CPA is not trying to rebuild schedules at filing time when it is too late to adjust anything.

KDA Case Study: California Manufacturer Uses Bonus Depreciation Phase Down To Create A Hiring Budget

One of our clients, a precision parts manufacturer in Southern California, came to us in mid 2023 with a common situation. They were profitable about $1.5 million of projected taxable income as an S corporation, had aging CNC machines, and wanted to increase capacity without strangling cash flow. Their internal plan was to lease a couple of machines and ride out the phase down with minimal capital spending.

After we rebuilt their depreciation schedules and looked at their pipeline, we recommended the opposite move. We helped them structure a $900,000 equipment purchase program split between late 2023 and mid 2024. In 2023, they captured 80 percent bonus on the first tranche plus Section 179 where it made sense, generating about $520,000 of federal depreciation. In 2024, they placed another $450,000 in service at the 60 percent bonus rate, creating roughly $360,000 of first year depreciation between bonus and regular MACRS.

The combined effect was to reduce their federal and California taxable income enough to free up more than $230,000 of cash over two years, even after factoring in loan payments. They used that cash to hire two additional machinists and a production manager, which increased throughput and allowed them to bid on a larger aerospace contract.

All in, they paid us just under $15,000 for strategy, entity clean up, and implementation over that period and saw an estimated 15x first year return on that investment in hard tax savings alone. The operational upside was a longer term bonus.

Ready to see how we can help you? Explore more success stories on our case studies page to discover proven strategies that have saved our clients thousands in taxes.

What The IRS Will Not Tell You About Depreciation Elections

When you file your tax return, you are quietly making a set of elections about how to depreciate each asset. Most taxpayers let their software or preparer use default settings. That is how you end up with suboptimal results and missed savings.

Choosing Between Section 179 And Bonus Depreciation

You usually have three levers for each asset:

• Elect Section 179 expensing up to the annual limit and your taxable income.
• Claim bonus depreciation at the applicable percentage.
• Use regular MACRS with no bonus.

There is no one size fits all answer. For instance, if you expect to sell the business in three to five years, stacking bonus and Section 179 may increase depreciation recapture at ordinary rates on sale. In that situation, you may want to leave some basis on the books and accept steadier deductions instead of front loading everything.

Grouping And Aggregation Rules

Under the depreciation rules, you can sometimes group similar assets and treat them as one unit of property. That can either help or hurt, depending on how you plan to dispose of them. It also interacts with the mid quarter convention, which can reduce your first year regular depreciation if you place more than 40 percent of your property in service during the last quarter.

Done right, you can avoid the mid quarter trap, maximize first year deductions under the 2024 and 2025 rates, and still keep enough basis to manage recapture risk down the road.

Will Claiming Bonus Depreciation Trigger An Audit?

Large first year depreciation deductions do get attention, but they are not inherently a red flag if they match your business facts and paperwork. The IRS cares more about whether you:

• Correctly documented purchase and placed in service dates.
• Classified property into the right recovery periods.
• Substantiated business use, especially for mixed use assets like vehicles and equipment used off site.

According to IRS examination statistics, the examination rate for pass through entities remains relatively low, but audits that do happen tend to focus on mismatches between reported income, expenses, and information returns. A giant depreciation deduction that is not supported by your fixed asset ledger is exactly the sort of thing an agent will probe.

If you are worried about documentation or a prior year election, this is where proactive planning matters. Firms that provide tax planning services year round instead of once a year form filling can often fix course while the year is still open, instead of trying to defend weak positions after the fact.

How W 2 Employees, 1099 Contractors, And Investors Each Use The Rules

Depreciation opportunities look very different depending on how you earn your money.

If You Are A W 2 Employee

W 2 employees generally cannot claim depreciation on tools or equipment used in their job because unreimbursed employee business expenses are suspended as itemized deductions for most people through 2025. The play for high income employees is to own a side business or investment activity that legitimately uses depreciable assets.

For example, a tech employee who starts a consulting LLC on the side and spends $20,000 on computers, cameras, and specialized equipment for client work could potentially use Section 179 and bonus depreciation against that consulting income, subject to basis and taxable income limits.

If You Are A 1099 Contractor Or Schedule C Owner

Sole proprietors and single member LLCs filing Schedule C live right in the sweet spot for bonus depreciation and Section 179, but they are also exposed to self employment tax. A 2024 decision to elect S corporation status or keep Schedule C treatment can change whether each extra dollar of deduction saves you 30 percent, 40 percent, or more.

We routinely walk self employed professionals through scenarios where a strategic mix of depreciation, retirement contributions, and S corporation salary planning cuts their combined income and self employment tax burden by tens of thousands of dollars.

If You Are A Real Estate Investor

Investors have to deal with passive activity rules and at risk limitations. Bonus depreciation from a cost segregation study can create large paper losses that do not immediately reduce your W 2 income but still have value. If you or your spouse can qualify as a real estate professional, those losses may offset other income directly.

This is one of those areas where generic advice almost always fails. You need asset by asset analysis, especially as the 2024 and 2025 bonus percentages change how aggressive you can be.

What Happens After 2025 If Congress Does Nothing

Under current law, bonus depreciation continues to phase down to 20 percent in 2026 and then disappears in 2027 and later years. Congress may change the rules before then, but you cannot run a serious business on hope. You plan for the rules in place and treat any favorable change as upside.

Practically, that means 2024 and 2025 are the last strong years where bonus depreciation can move your tax needle in a big way. After that, Section 179 expensing, cost segregation, and classic timing strategies will do more of the heavy lifting.

This information is current as of 6/8/2026. Tax laws change frequently. Verify updates with the IRS or your state tax authority if you are reading this later.

Bottom Line: How To Use Bonus Depreciation 2024 2025 Instead Of Letting It Use You

Bonus depreciation is no longer the simple 100 percent hammer it once was, but it is still one of the sharpest tools in the depreciation toolbox. The phase down forces you to think in multi year terms instead of one year wins. If you are a profitable California business owner, a poorly timed six figure equipment purchase can easily cost you $20,000 to $50,000 of avoidable tax in the first year alone.

Used correctly, though, the 2024 and 2025 rules can help you:

• Pull income forward or push it back to manage brackets and QBI.
• Fund hiring, expansion, or debt reduction with tax driven cash flow.
• Coordinate federal and California depreciation instead of getting whipsawed.
• Position your company for sale with a cleaner, more strategic asset base.

Book Your Tax Strategy Session

If you are unsure how the shrinking bonus percentages and Section 179 limits apply to your equipment, vehicles, or real estate, that uncertainty is leaving money on the table. Book a personalized strategy session with the KDA team and get a clear, asset by asset plan for the next two to three years so you can grow with confidence and keep more of what you earn. Click here to book your consultation now.

The IRS is not hiding these depreciation breaks. Most owners simply are not shown how to coordinate them across years, entities, and states. That is the difference between basic tax prep and real planning.