Mortgage Repayment Planner

A simple Svelte 5 web app that helps you explore different repayment strategies for a mortgage (or any loan). You can:

• Enter your current balance and annual interest rate
• Set a baseline monthly repayment
• Compare it against two alternative repayment amounts
• Visualize the loan balance over time with a chart
• See a comparison table showing payoff time, interest, total repayment, and savings

This tool is currency agnostic — just input your values in your local currency.

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Features

• Built with Svelte 5
• Interactive loan payoff simulation
• Dynamic line chart using ApexCharts
• Side-by-side comparison table
• Configurable repayment amounts
• Shows interest saved and months saved vs baseline

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Setup Instructions

1. Initialize a new project

npm create vite@latest mortgage-planner -- --template svelte
cd mortgage-planner

2. Install dependencies

npm install
npm install svelte-apexcharts apexcharts tailwindcss postcss autoprefixer -D

3. Configure Tailwind (optional, for styling)

npx tailwindcss init -p

Update tailwind.config.cjs to include:

content: [
  "./index.html",
  "./src/**/*.{svelte,js,ts}"
]

Add Tailwind imports in src/app.css:

@tailwind base;
@tailwind components;
@tailwind utilities;

4. Add the planner component

Replace src/App.svelte with the provided code from this repo.

5. Run the dev server

npm run dev

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Packages Required

• svelte (v5)
• svelte-apexcharts
• apexcharts
• tailwindcss (optional, for styling)

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Notes

• This planner is approximate. It assumes fixed interest and ignores special cases like moratoriums or progressive disbursements.
• Use it as a planning tool, not an exact financial calculator.

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License

MIT