Not in spreadsheets, but there's fun to be had here in Haskell-land: https://hackage.haskell.org/package/tax-0.2.0.0/docs/Data-Tax.html https://hackage.haskell.

Not in spreadsheets, but there's fun to be had here in Haskell-land: https://hackage.haskell.org/package/tax-0.2.0.0/docs/Data-Tax.html https://hackage.haskell.org/package/tax-0.2.0.0/docs/Data-Ta... I still use a spreadsheet, but I'm always tempted to manage my financial planning with Haskell and org-mode heh