Understand the numbers behind financial decisions

What you can calculate

Use the calculators to check loan repayments, investment and deposit projections, tax or GST arithmetic, and longer-term planning figures. When you want the reasoning behind a number, the Learn section uses worked examples to explain selected topics.

What sits behind a result

A result comes from the figures you enter and the calculation convention used. Where contribution timing, compounding, editable rates or rule periods can change the number, the page states them close to the result. You can use an estimate to compare scenarios, but it is not a quote, forecast or decision about eligibility.

Rule-sensitive calculators show the applicable period, verification date and official sources used. Those references let you check the rule behind the calculation; they do not replace current official information or product documents.

What ArthaSiddhi does not do

You do not need an account to use the calculators. ArthaSiddhi does not provide recommendations tailored to you or determine whether you qualify for a financial product or benefit. Before acting on an important result, check it against current official information and the terms of the product you are considering, and read the Financial Disclaimer.

How the platform works

The Editorial Policy explains how research, rule-sensitive information, numerical examples, and corrections are handled. The Calculator Methodology explains how to interpret inputs, assumptions, projections, and real-world differences.

Questions, suspected errors, and calculator issues can be sent through the Contact page.