Reviewed by
Where the stakes are highest, a credentialed professional reviews the methodology before the page is indexed.
What gets a credentialed review
Most calculators here rest on self-verifying arithmetic — future value, compounding, the 4% rule, a Roth break-even. For those, correctness is controlled by open formulas plus regression tests against published standards; a credential does not make 1.0730 more accurate. The one exception is how long will my money last, where the output is a retirement-depletion judgment and the potential for harm is highest. That page carries a credentialed reviewer (CFP, CPA/EA, or equivalent) and is held out of the index until the review is in place.
What the review covers
- The withdrawal, tax, and depletion methodology — the formulas and assumptions, not any individual's plan.
- That the tax treatment reflects the correct current-year rules for the account types modeled.
- That sequence-of-returns risk and fee drag are represented honestly, as ranges rather than a single deterministic figure.
The review is of the method, not of your situation. It does not turn an estimate into personal advice.
Reviewer credentials
The reviewer's name, credential, and verifiable professional profile are being finalized and will appear in the block above. Until then, the retirement-drawdown page remains noindex, enforced by the build. The broader standard for every tool is on the methodology page.
See also
- Methodology
The four contracts behind every result.
- Author
Who writes and maintains the calculators.