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It depends on the type of kit — a basic, single-use radon test kit is deducted as a consumable supply, while a reusable continuous radon monitor is treated as equipment, either deducted immediately under Section 179 or depreciated over time. Simple charcoal or short-term passive radon test kits, the kind sent to a lab after a short testing period and then discarded, are consumable supplies, deducted in full each time you purchase and use one for a client inspection, similar to how any other...

Yes — a drone purchased specifically to inspect roofs, chimneys, or other hard-to-reach areas during home inspections is a deductible business expense, treated the same as any other specialized inspection equipment. Drones have become an increasingly common tool for home inspectors, allowing safer and more thorough roof inspections without the need to physically climb onto every structure. Depending on the cost, a drone may qualify for Section 179, letting you deduct the full purchase price...

Not directly — like any self-employed professional, you can't deduct the value of your own time or labor spent developing and testing recipes, but the actual ingredient and supply costs used during that testing process are deductible business expenses. This follows the same principle that applies across every service-based profession: the IRS doesn't allow you to assign a dollar value to your own time and deduct it, no matter how clearly that time relates to your business. What is deductible...