Calculator Hubs and Guides

Start from a goal, not a formula. This page is the map of CalculatorVillage: six topic and audience hubs that group calculators by the job you are doing, and the full list of our 70 long-form guides, which explain the rules and arithmetic behind the bigger money decisions.

A calculator answers one question with the inputs you give it. A guide sets out where those inputs come from: the tax bracket or contribution limit for the current year, the agency that publishes it, a worked example with every number stated, and the cases where the simple answer stops working. Each guide names its primary sources (CRA, IRS, Canada.ca, CMHC, CFPB and similar) with the date we last checked them, and links to the calculator that runs the same math on your own numbers.

Most guides are written for Canadian readers, with a growing US set on federal tax brackets, 401(k) limits, PMI and early retirement. Nothing here is personal financial, tax or medical advice; the methodology explains how figures are checked and the disclaimer sets out the limits.