What is a personal allowance. I know the amount (€6700 if over 65 years of age)... but what is it? A tax credit on Spanish taxes or a deduction for income?
And how is it applied? Does one get the full amount or is there a computation that reduces the benefit. And again: is it applied against income or taxes?
I would really like to know. Every time I search for it I only get the amount without any detailed explanation.