The short answer: buy equipment when you need it and can afford it. The tax deduction is a benefit — not the reason to buy.

That said, timing does matter. If you are going to buy equipment anyway, understanding how Section 179 and bonus depreciation work can help you make a more informed decision about when to pull the trigger.

How equipment deductions actually work

When a business buys equipment, the IRS generally requires the cost to be depreciated over several years — not deducted all at once. A $30,000 piece of equipment might normally be deducted over five or seven years under MACRS depreciation.

Two provisions allow faster deductions:

Section 179

Section 179 lets you deduct the full cost of qualifying equipment in the year it is placed in service. For 2025, the limit is $1,220,000. The key restriction: the Section 179 deduction cannot exceed your business taxable income. It cannot create a loss.

Bonus depreciation

Bonus depreciation allows an additional first-year deduction on qualifying property. For 2025, the bonus depreciation rate is 40% (it was 100% through 2022 and has been phasing down). Unlike Section 179, bonus depreciation can create or increase a net operating loss.

Both provisions apply to equipment placed in service during the tax year — meaning it must be purchased and ready to use, not just ordered.

What changes the answer

• Your taxable income this year. If you expect a profitable year, accelerating a deduction into that year reduces your tax bill. If income is low, the deduction may be worth less or carry forward.
• Your cash position. A tax deduction does not pay for the equipment. If buying equipment strains cash flow, the tax savings rarely justify it.
• Whether you actually need it. Equipment you do not use does not generate revenue. A deduction on idle equipment is a poor trade.
• Financing vs. cash purchase. Financed equipment can still qualify for Section 179 in the year placed in service — you do not need to pay cash upfront to take the deduction.
• Your entity type. S-corp owners, LLC owners, and sole proprietors are affected differently by equipment deductions depending on how income flows through to their personal return.

A realistic example

Common mistakes

• Buying equipment you don't need. Spending $20,000 to save $5,000 in taxes is not a strategy — it is a $15,000 loss.
• Assuming the deduction is automatic. Equipment must be placed in service during the tax year. Ordered but not received does not qualify.
• Ignoring the income limitation on Section 179. If your business has a loss or minimal income, Section 179 may not help this year.
• Not tracking the purchase properly. Equipment purchases need to be recorded correctly in your books — as an asset, not an expense — before the deduction is applied. Incorrect bookkeeping can cause problems at tax time.
• Forgetting about sales tax and other costs. The deductible amount is the full cost of the equipment, including sales tax and installation — but those costs need to be documented.

Practical next steps

• Before buying equipment, estimate your taxable income for the year. If you do not know this number, your books are not current enough to make a good decision.
• Talk to your CPA before year-end — not after. Equipment timing decisions need to happen before December 31, not in February when you are filing.
• If you are financing the equipment, confirm the terms and make sure the asset will be placed in service before year-end.
• Keep the purchase invoice, financing agreement, and proof of delivery or installation. These documents support the deduction.