About us
Who we are, how we make money, and the rules we hold ourselves to.
Last reviewed 21 August 2026
What this site is
Buying Budget publishes free UK mortgage and home-buying calculators together with plain-English guidance. Everything is designed around one idea: a number is only useful if you can see how it was produced.
What we are not
We are not a lender, a mortgage broker or a financial adviser, and we are not authorised to give mortgage advice. We never make personal recommendations and we do not sell mortgages.
How we make money
The site has Google AdSense verification configured and promotes paid document templates on a separate website. Free calculator results do not require a purchase. Where a genuine commercial partner is connected, its placement is labelled and links are marked as sponsored. No commercial relationship changes the maths. See our affiliate disclosure.
Publishing and accountability
Buying Budget is the publishing name of this website, not a claim of FCA authorisation. Questions and corrections go to astecpublishing@gmail.com. We do not claim that our guides have been reviewed by a qualified mortgage adviser.
How we keep figures current
Tax bands, thresholds and calculation assumptions are stored as reviewable data with a source link and a review date, shown on each calculator. Read the calculation methodology for the detail.