When you buy a truck, trailer, or piece of equipment for your business, the IRS treats it as a capital asset with a useful life spanning multiple years. Depreciation is how you turn that purchase into tax deductions over time. Instead of writing off the full cost in the year you bought it, the default rules spread the deduction across a set recovery period.

The standard system is called MACRS (Modified Accelerated Cost Recovery System). Under MACRS, each type of asset gets an assigned recovery period. Vehicles and light trucks fall under 5 years. Heavy construction equipment is typically 5 or 7 years. The deductions are front-loaded, so you get larger write-offs in the early years and smaller ones toward the end.

Most small business owners care more about Section 179 than standard depreciation. Section 179 lets you deduct the full purchase price of qualifying equipment in the year you buy it, up to an annual limit that currently exceeds $1.2 million. You buy a $55,000 work truck and you can potentially deduct the entire amount right away instead of waiting five years. The catch is the equipment has to be used for business more than 50% of the time.

Bonus depreciation is another first-year option, though it’s phasing down. It was 100% through 2022, dropped to 80% in 2023, and continues decreasing each year. Unlike Section 179, bonus depreciation doesn’t have an income limitation, which can matter if your business has a loss year or you’re making a large purchase that exceeds your current-year profit.

For smaller items like hand tools, power tools, and equipment under $2,500 per item, you can use the de minimis safe harbor election to expense them immediately without going through depreciation tracking at all. This keeps things simpler and still gives you the full deduction in the year of purchase.

The real question isn’t just how depreciation works but when to use which method. Taking the full deduction through Section 179 in year one lowers your tax bill immediately. But if you expect higher income next year or you’re already in a low-income year, spreading the deduction out might save you more over time. This is where depreciation stops being a simple accounting entry and becomes a tax strategy decision.

Where trade businesses get into trouble is tracking. Without a proper fixed asset schedule in your books, you lose sight of what’s been depreciated, how much deduction remains, and what the tax basis is when you eventually sell or trade in a piece of equipment. Selling a truck you’ve fully depreciated creates taxable gain that surprises a lot of people at tax time.

Clean books with accurate asset records make all of this straightforward. If your bookkeeping doesn’t track fixed assets properly, your depreciation deductions are either getting missed entirely or applied incorrectly. Both cost you money. Having bookkeeping and tax services built for contractors means your equipment purchases get recorded correctly from day one, and your depreciation strategy actually lines up with your business goals instead of being an afterthought in April.