Revenue Jersey’s introduction of independent taxation for all residents became mandatory on 1 January 2026.
In this article, Kasia Marszalik and Phil Crosby provide an update on the latest developments and matters impacted Jersey residents should consider.

Independent taxation in Jersey: A recap of what is changing in 2026

Independent taxation has already applied to some Jersey residents in recent years.  However, most residents will have been subject to a framework where couples who are married or in a civil partnership were taxed on a joint basis, with liability for that tax falling on one of the partners.

From 1 January 2026 that framework was replaced with an independent taxation regime for all Jersey residents in what is the most significant single change to Jersey’s personal tax system since the 2006 introduction of ITIS, and which for many people will be the biggest change they have experienced to the way their personal tax is processed.

A move to individual responsibility

Under the new system residents will be responsible for their own individual tax affairs.  This includes filing their own return, reporting their income, and paying any tax due.

2026: a year of transition

It is important to see 2026 as a transition year. A lot is changing at once.  For many people it may feel unfamiliar at first, especially those who have experienced the previous married couple regime for most of their lives.
Jersey residents may notice:

  • Separate tax returns where there used to be one.
  • Changes to ITIS rates.
  • Differences to tax assessments.

Because of this, it’s a good idea to stay on top of your tax position and deal with the changes early where possible.

Can couples still jointly file Jersey tax returns?

The simple answer is ‘yes’, there are circumstances where some couples can continue to file joint returns.

Couples who were married or in a civil partnership and were jointly assessed before 2022 can elect to continue to file a joint tax return.  But it is important to recognise that while the tax return will include both partners’ information this is just an administrative simplification and they will still be taxed independently and receive their own tax assessments.

If this election is made:

  • One of the partners must be the ‘responsible partner’.
  • The responsible partner will take the lead in dealing with Revenue Jersey.
  • The responsible partner must submit the return and ensure the tax is paid.

While each partner will be liable for their own taxation, it is the responsible partner who is liable for any fines or penalties arising from late submission.

Eligible couples must actively opt-in to this arrangement, otherwise they will default to the standard requirement of submitting their own tax returns.  The joint filing election must be made by both partners by 30 September in the relevant year (eg to file a joint return for the 2026 year of assessment, an election must be made by 30 September 2026).  The election to file jointly can be revoked at any time by either partner.

What about payment on account and effective tax rates?

Two areas that may catch people off guard are payments on account and effective tax rates.

Payments on account (POA)

For Jersey taxpayers who settle their liability through POA, the move to independent taxation means:

  • The amount of POA may change (or may not be issued).
  • The POA may still reflect a previous joint position.
  • The first year may feel a bit uneven as a resident’s arrangements adjust.
  •  Revenue Jersey may only issue a POA to one partner.

Effective tax rates for the employed individuals

Each resident will have their own rate based on their own income and circumstances.

  • This could mean one partner pays more tax, while the other pays less.
  • ITIS rates may change. 

It is worth keeping an eye on this, especially if payroll deductions change and affect cashflow.

What about suspended 2019 tax liabilities?

There is no change to responsibility for liabilities arising before 1 January 2026 (including any suspended 2019 tax payable), with responsibility remaining with the partner who previously submitted the couple’s tax return.

Residents must inform Revenue Jersey by 30 September 2026 of their chosen method for settling this liability.

2025 tax return filing deadlines to keep in mind while Jersey transitions to the new framework

The tax year itself is not changing.  It still runs from 1 January to 31 December.

For the 2025 tax year, the filing deadlines remain:

  • Paper return: 31 May 2026
  • Online return: 31 July 2026

As mentioned, for an eligible couple wanting to file a joint 2026 return and for residents with suspended 2019 tax liabilities the election deadline for both is 30 September 2026.

When in doubt, ask

With so many changes happening, it’s completely reasonable to have questions.

Some residents will experience no change, but others may be unsure about:

  • Whether they need to file their own tax return.
  • How or when to elect for joint filing.
  • Their ITIS or POA arrangements.

It is a good idea to contact Revenue Jersey or seek professional advice soon, especially with 30 September now on the horizon. Getting clarity early can help avoid unnecessary stress.

Final thoughts

Independent taxation has long been an ambition of Jersey’s government and brings the jurisdiction in line with global norms for personal taxation.

But for many Jersey residents it will be a change from their long-established experience which they may consider unnecessary or unsettling.

With 2026 being a transition year, the key is to stay informed, act early, and ask questions now.

Disclaimer

This summary has been prepared for general awareness of the changes to Jersey’s personal tax regime.  It does not constitute tax advice and should not be relied upon as such.  RSM Channel Islands accepts no liability for the content of this summary.  Specific advice should be sought from the RSM Channel Islands tax team.