Although we do not yet know the exact conditions that will apply when the UK fully leaves the EU, it seems very likely that after December 31st 2020, UK citizens will be expected to follow the same regulations for entry into the Schengen Area (which includes Spain) as everyone else outside the EU. So, from December 31st 2020, UK citizens who wish to visit Guhyaloka can stay for up to 90 days in any 180 day period without needing a visa (Schengen visa waiver). This means that if you are staying at Guhyaloka for 90 days then you will not be able to visit another country in the Schengen Area within the 90 days before your arrival date at Guhyaloka, nor in the 90 days after your departure date from Guhyaloka. You might find this calculator useful. When you are checked – either by police spot check or by immigration officials when entering or leaving the country – if you have been in the Schengen Area for more than 90 days in the previous 180 days you will have contravened the conditions under which you entered the Area and are therefore considered as having ‘Overstayed’. Whilst 'overstaying’ doesn’t sound very serious, depending on country and conditions at the time it can be taken very seriously indeed – particularly if it is for more than just a few days. It can result in a fine of up to €1200 and/or prison and/or a ban from the Schengen Area – which would also be reflected in other country’s visa waiver systems - particularly the USA, Australia and New Zealand. Even if you leave without being checked by a person, your arrival and departure dates are recorded. So, if you have overstayed it may cause you problems the next time you try to enter the Schengen Area. In the future UK citizens will also have to apply to ETIAS to get security clearance before buying tickets or arriving in the EU, and any previous overstay will be on record causing a delay in gaining entry to EU countries. Other things you may be asked to show at the border control when you enter the Schengen Area: a) A return or onward ticket b) That you have enough money for your stay c) The address where you are staying Further information can be found here: UK Government Information on Resdiency in Spain General information on Schengen visas Consequences of 'overstaying' (Guhyaloka does not endorse the above websites)