Bitcoin (BTC) holders facing steep tax bills have a new option to ease the burden — by converting what they owe into income-producing mining hardware. Crypto lending firm Arch is rolling out TaxShield, which uses a specific provision of the U.S. tax code — bonus depreciation under IRS §168(k) — that allows investors to write off the cost of mining equipment against taxable income. This is how it works: Users post Bitcoin as collateral for an overcollateralized loan from Arch, then use the loan proceeds t ...