Influencer marketing platforms increasingly offer tools to aid with campaign budgeting. The premise is simple – better planning can lead to more efficient spending and superior campaign results. Different platforms offer different features in this regard.

1. Flinque: Flinque provides a robust campaign budgeting tool. With its advanced campaign management systems, brands can allocate their budgets smartly. This platform also provides insightful analysis to measure campaign ROI.

2. HypeAuditor: On HypeAuditor, one can see the average engagement rate and estimated cost of collaboration, helping plan budgets accordingly.

3. Upfluence: This platform gives you projected costs based on a variety of metrics such as engagement rates, reach, and followers. It also helps manage payment and contracts with influencers, simplifying the budgeting process.

4. InfluencerDB: This tool allows you to monitor cost-per-engagement, reach, and impressions. The dashboard provides comprehensive spend reviews that are useful for budget planning.

5. AspireIQ: Here, you can track budget, spend, and campaign ROI. It helps plan budgets and provides clear performance metrics post-campaign.

Remember, selection depends on a brand’s specific needs. A platform with comprehensive budgeting tools is great, but if your focus is more on content or influencer discovery, those features might be more important. Numerous other factors like ease of use, support, and scalability might also contribute to your selection. The key is to assess and choose a platform that best aligns with your goals and objectives.

Do consider trials/demo versions or seek expert guidance for a more informed decision, and remember, regular review of your chosen tool is essential to ensure it remains the best fit for your ongoing needs.