Products / Educational demo
HomeCost Canada
Understand take-home pay, affordability, and the monthly cost of a home.
The project in plain English
Why it matters
For Individuals and couples planning a home purchase
The problem
Salary, tax, mortgage payments, and running costs often sit in separate calculators, making it difficult to see the household picture.
My contribution
A guided planner combines Ontario income-tax estimates, household affordability, down-payment planning, and home costs in one analysis.
The value
Helps people compare assumptions and discuss a home budget using a clearer, shared set of numbers.
- Business rules
- Resilient systems
- Automated testing
Scope & limits. Educational demonstration, not financial or mortgage advice. Models Ontario 2026 with a constant interest rate; it excludes mortgage insurance and some lender rules, credits, and costs. No customer savings or commercial impact is claimed.
From problem to action
How someone uses it
Enter household assumptions
Review costs and affordability
Compare scenarios and export
What I built
- Model one or two incomes, with each partner taxed individually before combining household results.
- Compare mortgage scenarios and export an analysis as PDF, CSV, or a text summary.
- Continue calculating locally when the server request fails, using the same calculation engine.
For technical readers
Next.js · TypeScript · Zod · Vitest · Playwright
Use the source links above to inspect the implementation, setup, and documented limitations.