Tax debt is the amount of taxes that you owe to the government in a certain tax period. These taxes must be paid by a certain amount of time, otherwise you may be charged with tax evasion which is punishable by law with a sentence of up to 5 years and/or a pretty hefty fine; sometimes it can get up to $100,000.

The small country of Andorra has an advantage over Monaco for property prices when it comes to tax havens, but Andorra is two hours away from the nearest international airport while Monaco is fifteen minutes.

But later this year Andorra will cut out Monaco's advantage with new air and helicopter routes direct to the capital.