Guernsey vs Isle of Man: which jurisdiction wins?

Guernsey vs Isle of Man — both credible, very different trade-offs. Below: side-by-side on the variables that actually move the decision.

	Guernsey	Isle of Man
Tax headline	0% (10% banking/insurance)	0% (10% banking/retail)
Formation days	5	5
First-year cost	$5,500	$4,800
Treaties	12+	11+
Substance	Substance Law 2018	Substance requirements aligned with EU code of conduct
Banking	Channel Islands tier-1 banks	IoM banks plus UK introductions

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