Money & Planning Calculators (2026)
Runway, rewards and the everyday decisions between the big tax events.
About these money calculators
Two calculators for decisions that sit outside the tax calendar. The sabbatical tool answers how many months of savings you actually have once health insurance you were not paying for directly, a re-entry buffer you should not spend, and the interest the balance still earns are all accounted for — the naive savings-divided-by-spending figure is badly optimistic. The credit card points calculator converts a balance into dollars across cash back, portal bookings and transfer partners, because the same 100,000 points can be worth $600 or $2,050 depending purely on how you redeem them. Neither tool asks for an account, and as everywhere on this site the figures you enter never leave your own browser.