How the calculation works
Each method applies its entered rate to its entered base. The crossover is shown for the first two methods when their per-copy earnings differ and advances make a crossover meaningful.
Why rate alone is not enough
A 4% rate on MSRP can pay more than a 7% rate on a smaller net-receipts base. Compare the basis definition and not just the percentage.
Assumptions and limits
Use one currency and enter the definitions, rates, and costs from your actual agreement, quote, or sales plan. This is a scenario calculator, not legal, tax, accounting, or commercial advice.