What does the Hypotheekpunt demo show?
The Hypotheekpunt demo is a mortgage calculator for gross monthly payments, built by VirtuoLab as a demo page with React, Next.js and TypeScript. First, a visitor chooses between an annuity and a linear mortgage. Second, three fields set the loan amount from €50,000 to €1,000,000, the interest rate from 0.5% to 8% and the term from 5 to 30 years, with a slider, plus and minus buttons or by typing an amount. The calculator assumes a fixed rate for the full term and a monthly rate of the annual rate divided by 12. At the starting values, €350,000 at 3.95% over 30 years with annuity repayment, the gross monthly payment is €1,660.88, and 41.5% of the total paid goes to interest. Additionally, a stacked bar chart shows interest and principal per year, with a line for the outstanding balance. A second view is a yearly repayment schedule with totals. Finally, three cards compare the first month, the balance halfway through the term and the final month. All calculations run in the browser, and the demo stores no input.
