Hybrid mismatch
A hybrid mismatch arises when a financial instrument or an entity is classified differently under the tax laws of two countries, so that it produces a deduction in one country without a matching taxable receipt in the other. An instrument might count as debt in Country A, generating deductible interest, but as equity in Country B, generating a tax-exempt dividend. The result is a deduction in one place and nothing picked up in the other, on the same flow of money. The OECD's BEPS Action 2 targeted these arrangements; the UK brought in anti-hybrid rules from January 2017 and the EU's ATAD directive extended equivalent rules across member states.
ByLoopholeKiln EditorialPublished
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Example: a Dutch company pays what it calls interest to a US parent; the US treats it as an exempt dividend while the Netherlands treats it as deductible interest, so neither side taxes it.
Why it matters to a small business: hybrid mismatches need entities in more than one country with deliberately misaligned legal classifications. They are structurally out of reach for any firm operating in a single jurisdiction.