GAAR (General Anti-Avoidance Rule)
A General Anti-Avoidance Rule is a statutory catch-all that lets a tax authority counteract arrangements which technically comply with the letter of the law but abuse its purpose. The UK's GAAR, introduced in 2013, lets HMRC disallow any abusive tax advantage using a double-reasonableness test: an arrangement that cannot reasonably be regarded as a reasonable course of action. Canada's GAAR has existed since 1988 and bites where an avoidance transaction misuses or abuses the Income Tax Act. Australia has a broad general anti-avoidance provision in Part IVA. India's GAAR applies from 1 April 2017 where obtaining a tax benefit is the main purpose, with a de-minimis threshold of ₹3 crore (₹30 million). South Africa's GAAR sits in sections 80A to 80L of the Income Tax Act, in force since 2 November 2006, and lets the revenue authority disregard, combine or re-characterise an impermissible avoidance arrangement that produces a tax benefit and lacks commercial substance. GAARs are the last-resort weapon when specific rules have been slipped.
ByLoopholeKiln EditorialPublished
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Example: a circular structure spanning a dozen entities across four countries generates a £50m deduction while the only real purpose was to move money from one pocket to another; a GAAR can cancel the advantage even though each step was technically legal.
Why it matters to a small business: GAARs exist to police aggressive, purpose-built avoidance, the kind run by large groups. Your transactions are genuine commercial dealings, so a GAAR is rarely relevant to you.