GST in Guernsey: where things stand

After years of debate, Guernsey came closer than ever this summer to introducing a goods and services tax (GST) and then the clock ran out.

In July, the States of Deliberation spent three days debating the Policy & Resources Committee's 2026 Tax Reform Package, which includes a proposed 3% GST from 1 January 2028. With 27 amendments lodged and fewer than half debated by the end of the third day, members voted against continuing into the weekend. The debate will now resume when the Assembly reconvenes on 30 September.

So whilst there is no decision yet, the direction of travel is worth paying attention to.

What's actually being proposed

The 2026 package is broader than GST alone. It includes changes to personal income tax, social security contributions and corporate tax measures, designed to reduce the island's reliance on income-based taxation and close a funding gap that has been draining reserves for the best part of two decades.

The GST element is a 3% rate applied broadly, including to food. That figure was revised down from the 5% discussed in earlier proposals, partly to limit the impact on the cost of living. The tax is expected to raise around £55 million a year.

Alongside it sits a proposed International Service Entities scheme, modelled on Jersey's. Finance businesses serving international clients would pay an annual fee in exchange for relief from GST, keeping the tax focused on domestic consumption while still generating an estimated £10 million or more from the sector.

What Jersey's experience tells us

Jersey introduced its GST in 2008, also after fierce public opposition, and it is now a settled part of the island's tax system. It raised £122 million last year and is forecast to bring in £132 million in 2026, around 10% of Jersey's total tax take.

Two things stand out from Jersey's experience. First, the rate did not stay where it started. GST launched at 3% and rose to 5% within three years. Anyone assuming Guernsey's 3% is permanent should treat that assumption with caution.

Second, the administrative burden fell most heavily in the first year. Businesses had to register, update pricing and invoicing systems, train staff and build GST into their accounting processes. Those that prepared early had a far smoother transition than those that waited for the legislation to force their hand.

What happens next

The remaining amendments will be debated when the States reconvene on 30 September, followed by a vote on the package itself. The early signs from July are informative: the amendments designed to delay or derail the reforms were defeated by clear margins, which suggests the Assembly may be more receptive to GST than previous ones were. Proposals were rejected outright in 2023 and the political ground has shifted since.

If the package passes, implementation would follow on 1 January 2028. That sounds like a long runway, but Jersey's experience suggests it goes quickly. Registration thresholds, exemptions, ISE fee structures and transitional rules would all need to be worked through, and businesses would need time to adapt their systems and pricing.

If it fails, the funding gap does not go away. The alternatives already rejected by the States include income tax rises and wealth taxes, so some form of revenue-raising will remain on the table whatever happens in September.

What should businesses do now?

Nothing drastic. There is no GST to register for and no legislation to comply with. But it is a sensible moment to understand your exposure. That means knowing your turnover position relative to any likely registration threshold, understanding how your invoicing and accounting systems would handle a consumption tax, and thinking about how a 3% cost would flow through your pricing.

For finance businesses, the ISE scheme will be the detail to watch. How the fee is set and who qualifies will shape whether GST is a compliance exercise or a real cost.

We are following the September debate closely and will share what the outcome means in practice once it is known. If you would like to talk through what GST could mean for your business in the meantime, we are always happy to have that conversation.