Mini Deposit Home Loans – Mortgage Calculator App
A mortgage broker's app with repayment, stamp duty, rent vs buy and blended rate calculators.

- Industries
- Platforms
- Android
- Store category
- Finance
- Country
- Australia
- Built with
- Flutter
- React
- Node.js
- MySQL
The project
Mini Deposit Home Loans is a mortgage broker that arranges both bank and private sector funding for home buyers. Its Mini D Home Loans app gives buyers practical tools to plan a purchase: a loan repayment calculator, a stamp duty calculator for every Australian state and territory, a rent vs buy calculator and a blended rate calculator that combines a primary loan with a MINI D loan. Information videos explain the process, and call, email and website buttons sit on every screen. We built it with Flutter, React, Node.js and MySQL.
The challenge
- Home buyers with a small deposit struggle to see what they can afford and what a loan will cost.
- Stamp duty and government fees vary by state, which makes the upfront cost hard to work out.
- Buyers weighing renting against buying had no simple way to compare the two.
What we built
- A loan repayment calculator with repayments, total interest and a loan balance chart.
- A stamp duty calculator covering each state and territory, first home buyers, property type and foreign purchasers.
- A rent vs buy calculator based on savings, rent, purchase price and upfront costs.
- A blended rate calculator for a primary loan combined with a MINI D loan.
- Information videos plus call, email and website buttons on every screen.
Screens
Key features
Repayment calculator
Monthly repayment, total interest and a loan balance chart from loan amount, rate and term.
Stamp duty calculator
Stamp duty, registration and transfer fees for each state and territory.
Rent vs buy
Compares the cost of renting with buying over the chosen period.
Blended rate calculator
Shows the combined cost of a primary loan and a MINI D loan.
Information videos
Short videos that explain home buying and the broker's options.
One-tap contact
Call, email or visit the website from any screen.






