Why we made these free
Most of the decisions that determine a small business's fate get made without any arithmetic behind them. Prices get set by glancing at the shop next door. Ad budgets get spent because a competitor is advertising. Loans get taken at the size the bank approved rather than the size the business can service.
Nearly all of those decisions could be worked out beforehand, and the maths isn't hard. What's usually missing isn't the ability to calculate — it's a tool that shows the number honestly, including when the number is unwelcome.
Every calculator here runs entirely in your browser. Nothing you type is sent to our servers, nothing needs registering, and nothing hides behind a form. You're welcome to use them without ever contacting us.
How these tools work
- Every calculation runs on your device. Nothing you type reaches our servers, so your financial figures never leave your browser.
- Nothing is locked behind a form. Use every calculator, read every result, and download the tables without giving us any contact details.
- Figures drawn from regulation always carry their source and the date we last checked them, because Indonesian tax, employment, and zakat rules change over time.
- Where a number can't be stated honestly — a government-set KUR rate, or termination grounds you haven't confirmed — our calculators refuse to show a figure rather than guess.
Note
These calculators are estimation aids. Results depend entirely on the figures you enter and the assumptions stated on each page. For anything legally or financially binding — tax, employment, credit, and zakat — a calculator is not a substitute for advice from a qualified authority.