Croeso, Cymru! BusinessRateChecker Is Now Live in Wales

Big news: Welsh businesses can now see if they are overpaying on their business rates bill too!

We’ve loaded the Valuation Office’s full 2026 rating listThe public register listing every business property's Rateable Value. The current list is the '2026 list', based on rental values from 1 April 2024. for Wales and run every single one of its 110,819 properties, across all 22 Welsh councils, through our checks.

And no, we didn’t just copy and paste the English rules. Wales does business rates its own way, so we do too. Welsh multipliersThe pence-in-the-pound rate the government sets each year. Your rates bill is roughly Rateable Value × multiplier, before any reliefs are applied., Welsh small business rates reliefA discount for smaller properties. Below a certain Rateable Value you pay nothing at all; above that there's a sliding-scale ('tapered') discount up to a higher threshold. (100% up to £6,000 rateable value, tapering to £12,000) and Welsh transitional reliefA cap that phases in large bill increases (or decreases) gradually after a revaluation, so no ratepayer's bill jumps by the full amount in one go. are all built in.

The first headline? Around one in nine Welsh properties is flagged by our checks as possibly paying too much. Swansea, Newport and Conwy top the table.

But wait, there’s more. We’ve also analysed 1,361 decisions from the Valuation Tribunal for Wales, going back to 2018, so you can see which arguments actually win, council by council and property type by property type.

From Cardiff to Caernarfon, any Welsh business can now check its rateable valueThe official estimate of a property's annual rental value on a fixed valuation date. Your rates bill is based on this figure, not on what you actually pay in rent. for free.

Pop in your postcode and see what you could save. Diolch!