Pick the rate that applies to the transaction.
Taxable base
€1,000.00
IGIC at 7 %
€70.00
Total to pay
€1,070.00
Taxable base€1,000.00
IGIC at 7 %€70.00
Total€1,070.00

The 7 % rate comes from article 51.1 of Ley 4/2012, which the Canarian parliament sets and the Spanish state does not.

Canary Islands IGIC calculator by Calculadora Capital