Is a Radon Testing Kit a Supply or Equipment Deduction?

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...