"Unavoidable expenses" refers to the costs or payments that cannot be avoided or escaped. These are necessary or compulsory expenses that you have to pay regardless of your wishes or efforts to avoid them. Full definition
This conservative approach is also relevant to unavoidable expenses like taxes, and the influences of time, like inflation. (thecollegeinvestor.com)
Even by those standards, such loans attract high interest rates of typically around 11 % and above, but can help you tackle unavoidable expenses. (yourloanadvisors.com)
One of the largest and completely unavoidable expenses of traveling abroad is the essential hotel stay. (dunhilltraveldeals.com)