“Civil Service pensions are exempt from tax,under income in Spain.”
Inaccurately expressed. They must be declared, but in a box for ‘exempt income’.
There is a change to your tax bill but nothing like as much as if the pension was declared along with other income. Be careful, as we were advised wrongly about this - ALL income, worldwide, must be declared, but in the correct way. The law was different before 2016 and many/most gestors have not bothered to keep up with the rules - after all expats are a small part of their business, rules for native Spaniards are different, and if the taxman does fine you it will never be their fault, solely yours. I am content to pay for mistakes I may make but refuse to pay someone to make mistakes that cost me money.