Methodology
The formulas behind the numbers.
Good financial tools don't hide their assumptions. CompoundLab documents the logic behind every calculator - compounding frequency, contribution timing, inflation framing, return inputs - so the outputs mean something you can actually use.
Formula disclosure
Every formula behind CompoundLab's calculators is documented here - no black boxes, no hidden logic.
Assumption clarity
Key inputs like contribution timing, compounding frequency, and inflation are always made explicit.
Changelog
When formulas or outputs change, we document what shifted and why - so returning users stay informed.