Explore Payments & Transactions calculators and related business decision models on Martzine.
Payments & Transactions collects closely related calculations so you can move between specific models without returning to the top-level library.
These pages cover narrower Payments & Transactions questions and are intended to be opened when the standard calculator is not specific enough for the task.
Use the individual page for the formula, working inputs, examples, limitations and related long tail explanations.
Open the calculator that matches the decision you are reviewing. Focused sub-calculators are included where the broader model has a recurring narrower question.
ACH vs Credit Card Cost uses monthly processing volume, gateway a fee (%), gateway b fee (%).
Chargeback Cost uses chargebacks, fee per chargeback, average lost sale.
Effective Payment Fee Rate uses total payment fees, processed revenue.
Invoice Payment Fee Impact uses invoice value, payment fee (%).
Payment Processing Fee uses processed sales, percentage fee (%), fixed fee per transaction.
Refund Cost uses refunds, processing fee per refund, average refund amount.
Subscription Payment Fee uses subscription revenue in period, payment fee (%), fixed fee per transaction.
Transaction Fee Break Even uses fixed cost difference, percentage fee difference (%).
Tell us what you are trying to build, what problem you are solving and where the digital part becomes difficult. Martzine is built around that gap. Start with the outcome and the constraint, then work back to the right digital layer.
