Guides
Support content will stay tightly connected to the calculators.
The goal is not to become a broad finance blog. Guides exist to explain formulas, assumptions, and common mistakes around pricing, tax, and payout math.
How to Price Products With Fees and Margin
A practical way to move from cost and fees to a selling price that still protects your margin.
PayPal and Stripe Fee Pass-Through, Explained
A simple framework for deciding whether to absorb processor costs or gross them up in a quote or invoice.
VAT Inclusive vs VAT Exclusive Pricing
The difference that matters when you quote, invoice, or compare listed prices across platforms and markets.
Project Rate vs Retainer Pricing
How to decide whether a scope should be priced as a fixed project, a monthly retainer, or a simpler hourly engagement.
Marketplace Revenue vs Seller Payout, Explained
Why gross order value is not the same thing as the cash you actually keep after marketplace, shipping, tax, and payment costs.