Endodontic equipment is expensive and long-lived, which makes a purchase like a microscope, CBCT, or full operatory build both a clinical decision and a tax event worth timing on purpose.
Under Section 179 and bonus depreciation, you can often deduct a large share of a qualifying purchase in the year you place it in service, rather than spreading it over many years. That front-loaded deduction is most valuable in a high-income year.
The lever is timing against your income. Placing equipment in service in a year when profit is high, and the deduction offsets income taxed at your top rate, is worth more than the same purchase in a lean year.
It works in reverse too. If you expect a much higher-income year ahead, sometimes deferring a purchase, or the depreciation election, captures a bigger benefit later.
The mistake is treating the purchase as purely clinical and letting the tax treatment fall where it may. A quick conversation about which year and which election before you buy can turn a necessary expense into a well-timed deduction.