For a German reader the name needs no interpretation: it states the subject in two familiar words. The hyphen separates them cleanly, which helps on letterheads and in spoken recommendations. The .de ending narrows the focus to Germany, so the name suits a provider that works with German tax rules, German forms and German-speaking clients, and wants its address to reflect that local specialisation from the first glance.
Within the Bitcoin Tax & Law DACH bundle, this is the German national address for tax services around digital assets. Its .com sibling, crypto-steuern.com, can be acquired with it to cover German speakers beyond the border. Typical projects include a specialised tax practice, software that prepares transaction data for a tax return, an online course for private holders, or a firm’s client portal.