Guernsey vs Cayman Islands: which jurisdiction wins?

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

	Guernsey	Cayman Islands
Tax headline	0% (10% banking/insurance)	0% corporate, capital gains, and income tax
Formation days	5	5
First-year cost	$5,500	$4,200
Treaties	12+	Limited
Substance	Substance Law 2018	Economic Substance Law applies to relevant activities
Banking	Channel Islands tier-1 banks	Top-tier prime brokerage and crypto-friendly banking via Cayman National & private banks

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