Lawmakers in Guernsey have voted to halt the long-planned phase-out of mortgage interest tax relief, choosing to protect resident borrowers from the lingering shock of higher debt-servicing costs. The decision, passed as an amendment to the island budget, permanently stops the gradual withdrawal originally agreed in 2015.
Under the maintained policy, island homeowners can claim tax relief on interest paid on the mortgage of their primary residence up to a cap of £3,500 per year. The relief had been frozen between 2024 and 2026, but the latest vote marks a distinct pivot from gradual fiscal retirement toward active borrower protection.
Deputy Aidan Matthews, who brought the budget amendment, argued during the debate that current market conditions made this the worst possible time to proceed with phasing the measure out. His argument found enough political traction to carry the day, even against warnings from colleagues about public purse exposure. Deputy Neil Inder had spoken against the move, cautioning that passing every proposed amendment would add £20m to the budget.
Guernsey’s legislative stance offers a stark philosophical contrast to the mainland UK, where domestic mortgage interest relief for owner-occupiers – historically known as MIRAS – was phased out entirely decades ago. For homeowners in regional mainland markets, tax shields against borrowing costs belong strictly to history. Instead, mainland buyers and sellers carry the full weight of prevailing interest rates directly on their household balances.
Across prime rural and coastal enclaves in Norfolk and Suffolk, the real-world friction of sustained borrowing rates is clearly visible in the transaction data. In our own regional footprint covering 30 monitored local areas, the average property price stands at £702,873, with annual price growth resting flat at 0.0%. Homeowners are not necessarily cutting prices aggressively, but neither can they drive values higher in an environment where buyers cannot offset finance costs.
Liquidity tells the clearest story. The average time a listing spends on the market across these East Anglian districts has stretched out to 284 days, with the proportion of properties sold subject to contract sitting at just 24%. While mainland owners have no £3,500 tax relief to soften monthly repayments, the market adjusts through time rather than rapid price corrections: buyers take longer to commit, transactions crawl, and properties linger until affordability meets realistic pricing.
The Guernsey debate also exposed familiar tensions regarding who truly benefits from state-backed property interventions. Alderney representative Alex Snowdon supported keeping the relief, highlighting that many residents in Guernsey and Alderney work two or three jobs simply to support their mortgages and families. He noted that while some observers regard current borrowing costs as normal, households grew accustomed to cheap money for so long that returning to higher borrowing rates proves uniquely punishing when house prices remain elevated.
Yet that perspective was challenged on equity grounds. Deputy Jayne Ozanne voiced deep hesitation during the debate, describing the relief as an unfair advantage for existing owners over struggling tenants. She pointed out that preserving tax support for established borrowers will not solve the crisis of young people leaving the island, as renters paying upwards of £2,000 per month cannot build the capital egg needed to secure a purchase, even when typical mortgage costs might sit closer to £1,000.
That exact structural divide echoes across high-value markets in East Anglia. In coastal Suffolk and sought-after pockets of Norfolk, local workers face identical pressures. Where purchase values hover above the £700,000 threshold and transaction volumes stall at a 24% SSTC conversion rate, rental accommodation absorbs the surplus demand, often placing deposits entirely out of reach for unassisted first-time buyers.
Guernsey’s choice to preserve relief highlights how difficult it is for governments to withdraw financial cushions once interest rates stabilize well above zero. When cheap credit underpinned rising asset prices for over a decade, pulling away the safety net creates immediate political pain.
For the English regional markets, where no such subsidy exists, transaction velocity acts as the primary release valve. Sellers who price realistically for today’s financing costs eventually secure buyers, while those anchored to past price expectations endure market stays running well past nine months. The Guernsey decision reflects a desire to protect the status quo, but whether through fiscal concessions on an island or lengthy marketing campaigns on the mainland, the cost of borrowing continues to dictate the terms of modern property trade.
