The IRS draws a clear line through what’s called the de minimis safe harbor election. Tools and equipment that cost $2,500 or less per invoice can be expensed immediately in the year you buy them. This covers most hand tools, smaller power tools, and job-specific items that contractors purchase regularly. The one requirement is that you need a written accounting policy in place at the start of the tax year stating that you expense items under this threshold. Without that written policy, the IRS can challenge the immediate deduction.

For items over $2,500, the default treatment is to capitalize the purchase and depreciate it over its useful life according to IRS schedules. A $15,000 mini excavator or a $5,000 commercial-grade table saw gets added to your balance sheet as an asset and deducted gradually over several years.

You don’t always have to wait years to get the tax benefit on bigger purchases, though. Section 179 lets you deduct the full cost of qualifying equipment in the year you buy it, up to $1,220,000 for 2024. Trucks, trailers, compressors, generators, and heavy equipment all qualify. This can make a real difference in a profitable year when you want to reduce your taxable income. Talk to your tax preparer before making large equipment purchases so you can time them for the best result.

Here’s the part most contractors overlook. Regardless of whether you expense or capitalize a purchase on your tax return, you should still be tracking what gets used on each job. A $2,200 concrete saw might be expensed immediately for tax purposes, but if it was bought for a specific project, that cost belongs in your construction job costing. Knowing the true cost of each job is how you figure out which projects are profitable and which ones you’re underpricing.

The most common mistake is buying tools throughout the year and dumping everything into one generic “tools” or “supplies” category. That’s not wrong for tax purposes, but it tells you nothing useful about your business. Breaking purchases out by job and by type gives you the data to bid more accurately and spot where margins are thin.

If you’re unsure whether past purchases were handled correctly or you don’t have a written de minimis policy in place, our small business bookkeeping services can help get your records straightened out and build a system that tracks these purchases properly from here forward.