If the country does not require PAYE for contractors, then you will have to calculate your own withholding or estimated payments.  Of course, no one wants to make tax payments, but if you fail to make any estimated payments during the year, you might face some penalties.  The best approach is to calculate your annual tax liability, and then make estimated payments based on that amount. If you don't want to do your own withholding, you can always work through an umbrella company in the host country who will do it for you.