Contact
Corrections are the most useful thing you can send.
Send feedback
Open the feedback form Opens in a new tab, on a form hosted by Tally.
Reporting a mistake in the figures
The arithmetic is tested, but assumptions can still be wrong or misleading. If a number looks off, the fastest way to get it fixed is to paste the link from your address bar into the form — it contains every input, so the exact scenario can be reproduced — along with what you expected and why.
Suggesting a comparison
There are calculators for paying cash or financing a car, renting or buying a home, and a rental property against savings. If there is another tradeoff you keep working out by hand — paying down a mortgage against investing, bonds against a term deposit, leasing against buying — it is worth asking for. Knowing which ones people actually need decides what gets built next.
What this is not
Nobody here can tell you what to do with your own money, and questions about your own circumstances cannot be answered. The about page explains what the calculators do and do not account for, and anything beyond that needs a qualified adviser who knows your position.