What does Kashif do on this site?
Kashif writes the calculation engine, the 16 calculators and the 10 guides, and keeps the figures they cite current. Every worked example on the site is computed by the same engine you use, so the text and the math cannot drift apart.
- Engineering. The Monte Carlo simulation, the historical backtests and the withdrawal math are documented formula by formula on the methodology page.
- Sources. Every outside figure links to the agency, researcher or dataset it comes from, listed on the sources page.
- Corrections. Fixes are logged with their date in the methodology changelog and the data update log.
Is this financial advice?
No. Kashif is a software engineer, and the site is an educational tool. The calculators show what your assumptions imply; they do not know your full situation. For decisions about your own money, consider a fee-only fiduciary adviser. See the terms.
Found an error or have a question?
Email iamkashifcs@gmail.com. Corrections are welcome, and every confirmed fix is logged with its date.