England sets new council tax notice rule in mergers

A small but important tweak to council tax has arrived. If your area is moving to a new unitary or merged council, the rules on how notice is given for a second‑home premium are now clearer. New regulations made on 14 April 2026 and in force from 8 May 2026 set out how the one‑year notice works when old councils become one new authority, according to the official UK legislation website.

Here is the plain‑English version. When a council is created by a reorganisation, it replaces several “predecessor” billing authorities. Some of those former councils may already have voted to introduce the higher council tax for dwellings that are only used from time to time (often called second homes). Others may not have. Until now, that mix made the notice rule messy.

Section 11C of the Local Government Finance Act 1992 says that the first time a billing authority introduces the higher amount for periodically occupied dwellings, it must give at least one year’s notice before the start of the financial year it applies to. This is there to protect households from sudden changes and to help councils budget sensibly.

The 2026 amendment to the Local Government (Structural Changes) (Finance) Regulations 2008 solves the reorganisation puzzle. If at least one, but not all, predecessor councils made a determination under section 11C before the merger, any post‑merger decision by the new council is treated as its “first” determination only for the areas that had no earlier decision. In those parts, the one‑year notice clock must still run in full.

Think of it like this. Three districts, A, B and C, merge to form a new unitary. A and B gave notice last year to start a second‑home premium from a future April. C did not. The new unitary can continue with A and B’s plans on their original timetable. For C’s patch, the new unitary must make its own first decision and then wait a full year before the premium starts there. No one gets caught by surprise; no one is rushed through a shorter notice period.

What this means for you if you own a second home in a newly merged area: your bill may change at different times depending on which former district you were in. If your old council had already given notice, you should expect the premium to arrive on that published timetable. If it had not, the new council must give a full year’s notice for your area before charging the higher amount.

What this means for councils and finance teams: you should plan and communicate area by area. Treat any part of the new authority that lacked a predecessor decision as a “subsequent determination area” and ensure your first post‑merger decision for that area is taken at least 12 months before the April it would start. Build that lag into your budgeting and resident messaging.

Dates matter here. The instrument was signed at 11.55am on 14 April 2026, laid before Parliament at 4.00pm the same day, and comes into force on 8 May 2026. It applies to England’s local government reorganisations (the regulations extend to England and Wales, but they address England’s structural change rules). Source: UK legislation website.

One last study note for learners: this is a classic example of “continuity of functions” in public administration. When institutions change shape, the law must say how ongoing decisions carry over-especially where taxpayers’ money is involved. The government did not publish a separate impact assessment because this amendment fine‑tunes an existing council tax regime rather than creating a new one.