By Fintech in B2B i do not mean fintechs that are used to collect payments or any other thing which is consumer focused but i mean a fintech company that can provide a platform for business where they can manage their expenses , can pay salaries , can pay vendors/suppliers , a record of every expense can be checked by just a click.
Total expense made till date.
Total spend per unit , for example if you provide any monthly based service like providing a freight on monthly basis so unit cost till date of the month can be easily calculated .
Whats your angle/niche? Quickbooks, Salesforce and Gusto immediately come to mind, among many others. It's a mature market segment with a lot of competition.