Eligible assets may include private jets, yachts, cars, and even racehorses—so long as they're used for business at least 50% of the time. The rule is known as bonus depreciation. Why This Matters to You Tax rules like bonus depreciation can shift how the wealthy spend—and save—big money. “I tell clients: bonus depreciation doesn’t make the tax code Santa Claus,” said Mark Stancato, lead financial advisor at VIP Wealth Advisors. That includes racehorses, as long as buyers can prove they're used for business at least half the time.