To cite package ‘firemath’ in publications use:

  Verlander J (2026). _firemath: Withdrawal-Rate and Savings-Rate
  Arithmetic for Early Retirement_. R package version 0.1.0,
  <https://github.com/scrapertweeter3-prog/firemath-r>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {firemath: Withdrawal-Rate and Savings-Rate Arithmetic for Early Retirement},
    author = {James Verlander},
    year = {2026},
    note = {R package version 0.1.0},
    url = {https://github.com/scrapertweeter3-prog/firemath-r},
  }