Making money maths clear and free for everyone

RapidTrend is an online resource built around one simple idea: financial numbers should be easy to understand. Whether you are comparing loans, planning your savings, or checking what a tax or duty might cost, you should be able to get a clear answer in seconds.

We keep the site fast, simple and free. There is no account to create, no long form to fill in, and nothing to pay.

Borrowing, saving and paying tax all come down to numbers, and those numbers are hard to work out in your head. A small change to an interest rate or a loan term can change what you pay by a lot over time, and most people only find that out after they have signed.

We wanted a place where anyone could see the real effect of a decision before making it, without needing a finance background, a login or a sales call.

We want you to know what a result is based on, so we explain how each figure is worked out and what it does and doesn’t include.

• Standard methods. We use widely accepted formulas rather than hidden or made-up rules.
• Clear assumptions. Where a result depends on a rate, term or rule, we say so on the page.
• Dated information. Where we rely on government rates or thresholds, we note when they were last checked.
• We listen. If something looks wrong, tell us and we will look into it.

Much of what we publish follows Australian rules, including GST, stamp duty in South Australia and superannuation. Rates and thresholds change from time to time, so please check the latest details with the relevant authority before you rely on a result.

You can read more about how we handle results, privacy and use of the site in our Terms and Conditions.

The figures you type in stay in your browser. We don’t ask you to create an account, and we don’t store or share the numbers you enter. You can use the site without telling us who you are.