Final answer:
Travel expense claim forms usually have to be submitted within a set number of days after travel, commonly within 10 business days after travel, depending on an organization's policies.
Step-by-step explanation:
The due date for travel expense claim forms can vary greatly depending on the policies of the specific institution or company.
However, a common practice is for the forms to be submitted within a set number of days after travel has been completed.
For instance, one might expect to submit these forms within 10 business days after travel.
It is less common for such claims to be due prior to the travel or as soon as 5 days after.
Always check the specific policies of the organization for their requirements.