Contact
Questions, corrections and commercial enquiries.
Last reviewed 21 August 2026
Get in touch
Email astecpublishing@gmail.com. We read everything, and we prioritise reported errors in calculations, tax thresholds and sources.
What we cannot help with
We cannot answer questions about your own mortgage, tell you how much a specific lender would lend you, or advise on whether to buy, fix, overpay or remortgage. We are not authorised to give financial advice. For advice, contact an FCA-regulated mortgage adviser; for free impartial guidance, MoneyHelper is a good starting point.
Reporting a problem with a calculator
Please include the calculator name, sample figures that do not identify you, the result you saw and the result you expected. A link to an official rule is helpful for a tax issue. Do not send account numbers, bank statements or identity documents.