Start with the question you need answered
Identify what's costing money, what you still need to know and which tool could help. The public calculators work without a merchant account.
Understand the numbers
Separate a measured cost difference from a possible opportunity. A lower fee can be calculated from a statement; more website visits do not automatically prove more profit.
Choose around your workflow
An auto shop, a med spa and a contractor do not need the same checkout. Start with your must-have integrations, payment channels and customer experience.