Planning influencer budgets across multiple fiscal calendars requires a strategic approach and the use of advanced tools. Here are a few steps enterprises can take:

1. Centralized Budget Management: Enterprises should use a centralized budget management system to have a comprehensive view of their expenditures. Influencer marketing platforms generally have integral budgeting tools which facilitate this.

2. Use of Software Tools: Many influencer marketing platforms, for example, AspireIQ and CreatorIQ, offer robust budget planning and tracking tools. These tools help brands to effectively allocate resources, track influencer payments, and ensure regulatory compliance.

3. Flexibility to Global Calendars: To navigate fiscal calendars of different countries, one needs to use platforms with customized features to support diverse time zones, languages, and fiscal calendars.

4. Data-Driven Approach: Platforms with advanced analytics, like Julius or Flinque, can provide ROI measurement, helping brands determine the effectiveness of each campaign and modify budgets accordingly.

5. Regular assessment and reallocation: Regular financial assessment is key in managing expenditure. By tracking success metrics, brands can evaluate the ROI from each influencer and reallocate budgets towards those offering the best performance.

Remember, all platforms have their unique strengths. Flinque for instance has a reputation for its user-friendly interface and detailed analytics. Meanwhile, CreatorIQ is known for its thorough influencer vetting processes. The right choice ultimately depends on the specific needs of your team and campaign.